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Title:
A SYSTEM FOR DRYING HAZARDOUS WASTE USING SOLAR ENERGY
Document Type and Number:
WIPO Patent Application WO/2022/113099
Kind Code:
A1
Abstract:
The System for drying hazardous waste using solar waste provides a system (100) for drying hazardous wastes in an efficient and effective manner. The system (100) comprising an enclosure (200), a charging mechanism (300) operatively disposed and in material communication with the enclosure (200), a dispersing mechanism (400) operatively disposed within the enclosure (200), a discharging mechanism (500) operatively disposed in conjunction with the enclosure (200), an air exhaust mechanism (600) operatively coupled to and in fluid communication with the enclosure (200), a processor (700), a memory (800), a power supply (900), and a safety system (1000). The system of the present invention is energy, space, and time efficient and hence economic. Further, the system is simple, easy to operate, use and maintain.

Inventors:
LUTHRA GIRISH (IN)
Application Number:
PCT/IN2021/051077
Publication Date:
June 02, 2022
Filing Date:
November 17, 2021
Export Citation:
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Assignee:
LUTHRA GIRISH R (IN)
International Classes:
F26B3/28; B09B3/00
Domestic Patent References:
WO2019055761A12019-03-21
Other References:
ARASYA ATIKSU ÇÖZÜMLERI: "Eskişehir OSB Solar Çamur Kurutma-ARASYA / HUBER", YOUTUBE, 6 July 2015 (2015-07-06), XP055942725, Retrieved from the Internet
MWH, NOW PART OF STANTEC: "MWH Global Produces New Zealand's First Municipal Solar Sludge Drying Facility", YOUTUBE, 4 June 2014 (2014-06-04), XP055942727, Retrieved from the Internet
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Claims:
I CLAIM:

1. A system (100) for effectively and efficiently rendering hazardous wastes dry, the system (100) characterized by having: an enclosure (200) defined by: o an impermeable base (202) ; o a plurality of walls (204) extending operatively upward from a periphery (202p) of the base (202); o a draining channel (206) configured in and around the periphery (202p) of the base (202); o a roof (208) operatively disposed over and supported on the plurality of walls (204), the roof (208) being transparent to sunlight and configured to permit transmission of sunlight therethrough into the enclosure (200); a charging mechanism (300) operatively disposed and in material communication with the enclosure (200), the charging mechanism (300) configured to charge the hazardous waste into the enclosure (200); a dispersing mechanism (400) operatively disposed within the enclosure (200); the dispersing mechanism (400) configured to disperse the hazardous waste on to the impermeable base (202) thereby facilitating drying of the hazardous waste; a discharging mechanism (500) operatively disposed in conjunction with the enclosure (200), the discharging mechanism (500) configured to discharge a dried hazardous waste from within the enclosure (200); an air exhaust mechanism (600) operatively coupled to and in fluid communication with the enclosure (200), the air exhaust mechanism (600) configured to draw out volatile gases, and moisture emanating from the hazardous waste being dried, and air from within the enclosure (200); a processor (700); a memory (800) coupled with the processor (700), the memory (800) configured to store data, and executables relating to the system, and the processor (700) configured to execute the executables upon receiving one or more commands; wherein the processor (700): o being operatively coupled with each of the charging mechanism (300), the dispersing mechanism (400), the discharging mechanism (500), the air exhaust mechanism (600), and the memory (800); and o configured to control each of the charging mechanism (300), the dispersing mechanism (400), the discharging mechanism (500), the air exhaust mechanism (600), and the memory (800); and a power supply (900) connected to and configured for supplying power to each of the charging mechanism (300), the dispersing mechanism (400), the discharging mechanism (500), the air exhaust mechanism (600), the processor (700), and the memory (800).

2. The system as claimed in claim 1, wherein the impermeable base (202) having a hump-back bridge shape, the hump-back bridge shape facilitating easy running of fluids emanating from the hazardous waste disposed on the impermeable base (202). 3. The system as claimed in claim 1, wherein the impermeable base (202) having a multi-layered structure comprising a first top layer (202a) made of cement concrete; a second layer (202b) disposed operatively below and in contact with the first top layer (202a), the second layer (202b) made of macadam; - a third layer (202c) disposed operatively below and in contact with the second layer (202b), the third layer (202c) made of a geosynthetic material; and a fourth layer (202d) disposed operatively below and in contact with the third layer (202c), the fourth layer (202d) made of compact yellow soil, wherein the plurality of walls (204) being impermeable and made of concrete; and wherein the draining channel (206) being configured to receive and convey fluid leaching out from the hazardous waste. 4. The system as claimed in claim 1, wherein the roof (208): being made of sheets, the sheets being made of a material selected from the groups consisting of polyacrylic, polycarbonate, tempered glass, ultra-violet polyethylene, and any combinations thereof; being titled at an angle with respect to a horizontal axis, the titled roof (208) facilitates in sliding of water falling thereover; being coupled with a draining channel (208a), the draining channel (208a) configured to receive water from over the roof (208) and channel the collected water into a storage; and being made of a material that allows transmission of short wavelength sunrays and reflect long wavelength sunrays.

5. The system as claimed in claim 1, wherein the charging mechanism (300) comprising a hopper (302) connected to and in fluid communication with the enclosure (200), the hopper (302) configured to charge hazardous waste into the enclosure (200). 6. The system as claimed in claim 5, wherein the dispersing mechanism (400) comprising: a first chain sprocket (402a) rotatably disposed with the enclosure (200); a second chain sprocket (402b) rotatably disposed with the enclosure (200) and spaced apart from the first chain sprocket (402a); - an endless chain (404) operatively disposed over each of the first chain sprocket (402a), and the second chain sprocket (402b); spikes (406) extending in an operative upward direction from an upper surface of the endless chain (404); and a chain sprocket drive motor (408) operatively coupled with one of the first chain sprocket (402a), and the second chain sprocket (402b), the chain sprocket drive motor (408) operated by a variable frequency drive; wherein the dispersing mechanism (400) being connected to and in fluid communication with the hopper (302) through an inlet configured on one of the plurality of walls (204), the inlet being covered with a flexible acrylic sheet which prevent ingress of air from outside of the enclosure (200), and egress of air, and volatile gases from within the enclosure (200).

7. The system as claimed in claim 6, wherein the dispersing mechanism (400) includes: an electric overhead traveling crane (410) operatively disposed within the enclosure (200); a row tiller (412) operatively connected with the electric overhead traveling crane (410), the row tiller (412) configured to disperse, spread, and move the hazardous waste in rows; and a row tiller drive mechanism (414) coupled with the row tiller (412), and configured to drive the row tiller drive mechanism (414).

8. The system as claimed in claim 1, wherein the discharging mechanism (500) comprising: a hazardous waste conveyor (502) configured to convey dried hazardous waste from within the enclosure (200); a storage pit (504) configured to receive the dried hazardous waste from the hazardous waste conveyor (502); a bucket elevator (506) having an operative first end (506a) thereof operatively disposed in vicinity of the storage pit (504), the bucket elevator (506) configured to receive and convey the dried hazardous waste from the storage pit (504); an intermediate transfer trough (508) being disposed in vicinity of an operative second end (506b) of the bucket elevator (506), the intermediate transfer trough (508) being configured to receive the dried hazardous waste over from the operative second end (506b) of the bucket elevator (506); a screw conveyor (510) having an operative first end (510a) thereof disposed in vicinity of the intermediate transfer trough (508), the screw conveyor (510) configured to receive the dried hazardous waste from the intermediate transfer trough (508); and a storage silo (512) configured to receive the dried hazardous waste received from an operative second end (510b) of the screw conveyor (510), wherein the dried hazardous waste is stored in the storage silo (512). 9. The system as claimed in claim 1, wherein the air exhaust mechanism (600) comprising: an induced draft fan (602) for drawing out humid contaminated air from within the enclosure (200); a low revolution per minute fan (604) for drawing out humid air from within the enclosure (200); an air extracting duct (606) connected to and in fluid communication with the enclosure (200) via the inducted draft fan (602), the air extracting duct (606) configured to receive the humid contaminated air from within the enclosure (200) and exhaust the same to atmosphere; a chimney (608) connected to and in fluid communication with the enclosure (200) via the low revolution per minute fan (604) and via an activated carbon filter to exhaust the humid air to atmosphere therethrough; and a monitoring platform (610) configured on the chimney (608).

10. The system as claimed in claim 1 including a safety system (1000), the safety system (1000) comprising: a high expansion foam generator (1002a) disposed within the enclosure (200); the high expansion foam generator (1002a) configured to generate foam on to the hazardous waste in case of fire; foam dispensers (1002b) connected to and in fluid communication with the high expansion foam generator (1002a), the foam dispensers (1002b) operatively disposed within the enclosure (200) and configured to dispense foam from the high expansion foam generator (1002a); a fire-hydrant system (1004) comprising: o a water tank (1004a) configured to store water therein; o a fire-hydrant pump (1004b) connected to and in fluid communication with the water tank (1004a); o a fire-hydrant duct (1004c) connected to and in fluid communication with the fire -hydrant pump (1004b), the fire -hydrant duct configured to receive water from the water tank (1004a) which being pumped by the fire -hydrant pump (1004b); o actuator valves (1004d) disposed in line with the fire-hydrant duct (1004c), the water tank (1004a), and the fire -hydrant pump (1004b), the actuator valves (1004d) configured to be actuated upon receiving signals from a fire -hydrant control panel(1004e).

11. The system as claimed in claim 1 including a leachate treatment system (1100) comprising: an underground drainage collecting tank (1102) connected to and in fluid communication with the draining channel (206), the drainage collecting tank

(1102) configured to receive leachate from the draining channel (206); man-holes (1104) configured on the underground drainage collecting tank (1102), the man-holes (1104) facilitating access to the underground drainage collecting tank (1102); - a pump (1106) configured to transfer the leachate from the underground drainage collecting tank (1102) to a flash mixing chamber (1108); a splash mixing chamber (1108); chemical storing and charging tanks (1110); chemical dosing pumps (1112); tube settlers (1114) for facilitating settling of sludge; filter (1116) for separating solid waste from liquid; and storage tank ( 1118) for storing treated water.

Description:
TITLE: A SYSTEM FOR DRYING HAZARDOUS WASTE USING SOLAR ENERGY

FIELD OF THE INVENTION

The present invention relates to processing of hazardous wastes, and in particular to drying hazardous wastes using solar energy in an efficient and effective manner.

BACKGROUND OF THE INVENTION

Industries in modern world are the power houses of an economy. On one hand industries produce valuable products, but on the other hand the same industries also yield mammoth amounts of unwanted by-products which are termed as industrial waste.

The industrial waste may be hazardous. The term hazardous herein may, but not necessarily, include waste substance(s) that may be harmful to any form of life including, but not limited to, humans, plants, and animals, or to the environment. Further, the term hazardous may include, but not necessarily, waste substance(s) which may be flammable, toxic, explosive, corrosive, have long or short-term health hazards (acute or chronic) to any form of life or environment. The industrial waste may be in any form including gas, liquid, solid and any combinations thereof, which is herein after is referred to as hazardous waste(s).

The hazardous waste so obtained has to be disposed in a manner which is environmentally friendly, safe, and socially acceptable. Each type of hazardous waste has to be treated and disposed in particular manner which eliminates or at least reduces the harmful effects of the hazardous wastes.

Some of the hazardous wastes may have calorific value (CV). Typically, hazardous wastes having calorific value of 2500 Kcal/kg or greater and/or loss of ignition of 20 % or greater are disposed through heat destruction method, wherein the combustible components are burnt down.

Such Hazardous Waste requiring disposal through combustion mode, may be disposed by incineration. However, this may pose threat to environment or human. Alternatively, such waste may be employed as an alternate fuel. For example, the alternate fuel may be used in cement kilns, wherein the conventional fuel such as coal is substituted by the hazardous waste.

However, to incinerate the such hazardous waste or to use it as a fuel it may be necessary to pre-process such hazardous waste. Typically, liquid, and semi-solid wastes are mixed with the solid type hazardous wastes to obtain a solid product which may be easily incinerated or substituted for coal or other solid fuels in cement manufacturing.

Further, in order to use such hazardous waste as fuel, it is desired to have characteristics which are more or less equivalent to coal or other solid fuels, thereby permitting easy substitution.

The step of pre-processing is performed to limit certain parameters like moisture content, chloride, sulphur etc., and to achieve certain desirable parameters like calorific value, particle size etc., in a particular desired range. The step of pre processing of such hazardous waste may include drying and blending of the different types of hazardous wastes to achieve the desired parameters.

One of the numerous parameters of such hazardous waste is moisture. It is desired to have minimal moisture content. For example, while incinerating such hazardous waste with high moisture content, additional heat may be required to reduce or remove the moisture before incineration. Also, if such hazardous waste is substituted as a fuel in cement industry, the excess amount of moisture may lead to more hydrogen loss, which is not desired.

Further, if such hazardous wastes are not dried properly, that is if the moisture content is high, the net calorific value of such hazardous waste is much less. Still further, there is heat loss due of presence of moisture in such hazardous wastes. In summary, there are more losses than gain by employing high moisture content hazardous wastes.

In the known art, the process of removal of moisture content from such hazardous waste is achieved by drying the high moisture content hazardous waste. In particular, the moisture removal may be achieved by one or more methods. One method is to store such hazardous waste for a prolonged duration so that the moisture evaporates naturally. However, this method inevitably requires provision of large storage space, which may not be feasible.

Another method is to force dry such hazardous waste using heat sources. However, the use of heat sources may lead to fire hazards, which is obviously not desired. Moreover, heating requires fuel, which may turn out to be more costly than the net energy generated from such hazardous waste.

Still another method is to employ solar energy for drying such hazardous waste. However, the conventional method of solar drying such hazardous waste is plagued with the limitation that it requires large area for drying.

It is observed that such hazardous waste such as the paint sludge, ETP sludge etc., contains high amount of moisture which may be up to 50 % to 60 %. As is evident, it is difficult to pre-process such hazardous waste without reducing the moisture content substantially. Also, the moisture content may impede the shredding process and the result may be that the desired particle size may not be achieved and further that the material may not be sieved properly.

Thus, it is evident from the above that in order to employ such hazardous waste as an alternative fuel to coal and other solid fuels in the cement industry, it is necessary to have such hazardous waste with reduced moisture content.

Another parameter, other than moisture content is the particle size of such hazardous waste, which also desired to be in a certain range.

Further, it is desired to dry such hazardous waste before blending, wherein the step of drying has to be energy, time, and space efficient.

Such hazardous waste, during the step of drying, may release one or more volatile component in form of gases or fumes, which may lead to fire hazards, if the temperature raises beyond a critical limit.

Thus, it is desired to devise ways to dry such hazardous waste such that the time required for drying is minimized and at the same time the temperature of such hazardous waste is not raised and never reaches the critical limit, while being space efficient. Therefore, there is felt a need for overcoming one or more drawbacks associated with the prior art.

OBJECTS OF THE INVENTION Some of the objects of the presently disclosed invention, of which at the minimum one object is fulfilled by at least one embodiment disclosed herein are as follow:

An object of the present invention is to provide an alternative, which overcomes at least one drawback encountered in the existing prior art;

Another object of the present invention is to provide a system for drying the hazardous waste;

Still another object of the present invention is to provide a system for drying the hazardous waste which is time, space, and energy efficient;

Yet another object of the present invention is to provide a system for drying the hazardous waste, wherein dried hazardous waste has desired particle size and desired moisture content; and

Another object of the present invention is to provide a system for drying the hazardous waste, wherein the dried hazardous waste, after suitable pre-processing can be used as alternative fuel in cement industry.

Other objects and benefits of the present invention will be more apparent from the following description which is not intended to bind the scope of the present invention.

SUMMARY OF THE INVENTION

The present invention relates to a system for effectively and efficiently rendering hazardous wastes dry. The system includes an enclosure defined by an impermeable base, a plurality of walls extending operatively upward from a periphery of said base, a draining channel configured in and around said periphery of said base, a roof operatively disposed over and supported on said plurality of walls, said roof being transparent to sunlight and configured to permit transmission of sunlight therethrough into said enclosure, The system further includes a charging mechanism which is operatively disposed and in material communication with said enclosure, said charging mechanism configured to charge said hazardous waste into said enclosure, a dispersing mechanism operatively disposed within said enclosure, said dispersing mechanism configured to disperse said hazardous waste on to said impermeable base thereby facilitating drying of said hazardous waste;

The system also includes a discharging mechanism operatively disposed in conjunction with said enclosure, said discharging mechanism configured to discharge a dried hazardous waste from within said enclosure;

An air exhaust mechanism is operatively coupled to and in fluid communication with said enclosure, said air exhaust mechanism configured to draw out volatile gases, and moisture emanating from said hazardous waste being dried, and air from within said enclosure;

The system may include a processor, and a memory coupled with said processor, said memory configured to store data, and executables relating to said system, and said processor configured to execute said executables upon receiving one or more commands, wherein said processor being operatively coupled with each of said charging mechanism, said dispersing mechanism, said discharging mechanism, said air exhaust mechanism, and said memory; and configured to control each of said charging mechanism, said dispersing mechanism, said discharging mechanism, said air exhaust mechanism, and said memory; and

The system may be powered by a power supply which is connected to and configured for supplying power to each of said charging mechanism, said dispersing mechanism, said discharging mechanism, said air exhaust mechanism, said processor, and said memory.

The system of the present invention also may include a safety system. The safety system includes a high expansion foam generator disposed within said enclosure, said high expansion foam generator configured to generate foam on to said hazardous waste in case of fire, foam dispensers connected to and in fluid communication with said high expansion foam generator, said foam dispensers operatively disposed within said enclosure and configured to dispense foam from said high expansion foam generator, a fire-hydrant system comprising a water tank configured to store water therein, a fire-hydrant pump connected to and in fluid communication with said water tank, a fire-hydrant duct connected to and in fluid communication with said fire- hydrant pump, said fire -hydrant duct configured to receive water from said water tank which being pumped by said fire -hydrant pump, actuator valves disposed in line with said fire -hydrant duct, said water tank, and said fire -hydrant pump, said actuator valves configured to be actuated upon receiving signals from a fire-hydrant control panel.

The system of the present invention also may include a leachate treatment system. The leachate treatment system includes an underground drainage collecting tank connected to and in fluid communication with said draining channel, said drainage collecting tank configured to receive leachate from said draining channel, man-holes configured on said underground drainage collecting tank, said man-holes facilitating access to said underground drainage collecting tank, a pump configured to transfer said leachate from said underground drainage collecting tank to a flash mixing chamber, a splash mixing chamber, chemical storing and charging tanks, chemical dosing pumps, tube settlers for facilitating settling of sludge, filter for separating solid waste from liquid, and storage tank for storing treated water.

BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWING

The present invention will now be described with the help of the accompanying drawing, in which:

FIG. 1A illustrates a schematic diagram of a system for drying hazardous waste in accordance with the present invention;

FIG. IB illustrates a schematic diagram of a multi-layered impermeable base in accordance with the present invention;

FIG. 2A illustrates a schematic diagram of a dispersing mechanism and discharging mechanism in accordance with the present invention;

FIG. 2B illustrates another view a schematic diagram of a dispersing mechanism and discharging mechanism in accordance with the present invention; FIG. 2C illustrates a schematic diagram of a dispersing mechanism in accordance with the present invention;

FIG. 2D illustrates a schematic diagram of an impermeable base with hump in accordance with the present invention; FIG. 3A illustrates a schematic diagram of an air exhaust mechanism in accordance with one embodiment of the present invention;

FIG. 3B illustrates a schematic diagram of the air exhaust mechanism in accordance with another embodiment of the present invention;

FIG. 4 illustrates a schematic diagram of a safety system which forms part of the system for drying waste in accordance with the present invention;

FIG. 5 A, 5B, and 5C illustrate a schematic diagram of a leachate treatment system in accordance with the present invention; and

FIG. 6 illustrates a schematic block diagram of system for drying hazardous waste in accordance with the present invention. LIST OF NUMERALS

The following is the list of numerals and their meaning as used in the present specification.

100 - System

200 - Enclosure

202 - Impermeable base

202a - First top layer

202b - Second layer

202c - Third layer

202d - Fourth layer

202e - Impermeable base with Hump-

202p - Periphery

204 - Plurality of walls

206 - Draining channel

208 - Roof a Draining channel Charging mechanism Hopper

Dispersing mechanism a First chain sprocket b Second chain sprocket Endless chain Spikes

Chain sprocket drive motor Electric overhead traveling crane Row tiller

Row tiller drive mechanism Discharging mechanism Hazardous waste conveyor Storage pit Pocket elevator a Operative first end b Operative second end Intermediate transfer trough Screw conveyor a Operative first end b Operative second end Storage silo

Air exhaust mechanism

Induced draft fan

Low revolution per minute fan

Air extracting duct

Carbon filter

Chimney

Monitoring platform

Processor

Memory 900 - Power supply

1000 - Safety system

1002a - High expansion foam generator

1002b - Foam dispenser

1004 - Fire-hydrant system

1004a - Water tank

1004b - Fire-hydrant pump

1004c - Fire-hydrant duct

1004d - Actuator valves

1004e - Fire-hydrant control panel

1100 - Leachate treatment system

1102 - Drainage collecting tank

1104 - Man-holes

1106 - Pump

1108 - Flash mixing chamber

1110 - Chemical storing and charging tanks

1112 - Chemical dosing pumps

1114 - Tube settlers

1116 - Filter

1118 - Storage tank

DETAILED DESCRIPTION

All the terms and expressions, which may be technical, scientific, or otherwise, as used in the present invention have the same meaning as understood by a person having ordinary skill in the art to which the present invention belongs, unless and otherwise explicitly specified.

In the present specification, and the claims, the articles “a”, “an”, and “the” include plural references unless the context clearly dictates otherwise.

The term “comprising” as used in the present specification and the claims will be understood to mean that the list following is non-exhaustive and may or may not include any other extra suitable features or elements or steps or constituents as applicable.

Further, the terms “about” or “approximately” used in combination with ranges relating to sizes of parts, or any other physical properties or characteristics, are meant to include small variations that may occur in the upper and/or lower limits of the ranges of the sizes.

The present invention is now described with reference to the accompanying drawing, wherein FIG. 1A illustrates a schematic diagram of a system for drying hazardous waste in accordance with the present invention, FIG. IB illustrates a schematic diagram of a multi-layered impermeable base in accordance with the present invention, FIG. 2A illustrates a schematic diagram of a dispersing mechanism and discharging mechanism in accordance with the present invention, FIG. 2B illustrates another view a schematic diagram of a dispersing mechanism and discharging mechanism in accordance with the present invention, FIG. 2C illustrates a schematic diagram of a dispersing mechanism in accordance with the present invention, FIG. 2D illustrates a schematic diagram of an impermeable base with hump in accordance with the present invention, FIG. 3A illustrates a schematic diagram of an air exhaust mechanism in accordance with one embodiment of the present invention, FIG. 3B illustrates a schematic diagram of the air exhaust mechanism in accordance with another embodiment of the present invention, FIG. 4 illustrates a schematic diagram of a safety system which forms part of the system for drying waste in accordance with the present invention, FIG. 5A, 5B, and 5C illustrates a schematic diagram of a leachate treatment system in accordance with the present invention, and FIG. 6 illustrates a schematic block diagram of system for drying hazardous waste in accordance with the present invention.

The present invention provides a system (100) which overcomes one or more drawbacks encountered in the conventional systems. More specifically, the present invention relates to a system for drying hazardous wastes in an efficient and effective manner.

In accordance with the present invention, a system (100) is disclosed, the system (100) comprising an enclosure (200), a charging mechanism (300) operatively disposed and in material communication with the enclosure (200), a dispersing mechanism (400) operatively disposed within the enclosure (200), a discharging mechanism (500) operatively disposed in conjunction with the enclosure (200), an air exhaust mechanism (600) operatively coupled to and in fluid communication with the enclosure (200), a processor (700), a memory (800), a power supply (900), and a safety system (1000).

In accordance with the present invention, the enclosure (200) comprising an impermeable base (202), a plurality of walls (204) extending operatively upward from a periphery (202p) of the base (202), a draining channel (206) configured in and around the periphery (202p) of the base (202), and a roof (208) operatively disposed over and supported on the plurality of walls (204), the roof (208) being transparent to sunlight and configured to permit transmission of sunlight therethrough into the enclosure (200).

In accordance with one embodiment of the present invention, the impermeable base (202) is having a hump-back bridge shape or profile. The hump-back bridge shape or profile facilitates easy running of fluids emanating from the hazardous waste disposed on the impermeable base (202). The fluids may include liquids, semi-liquids, slurries, and the like.

In accordance with one embodiment of the present invention, the impermeable base (202) may be a multi-layered structure. In one embodiment, the impermeable base (202) comprise a first top layer (202a) made of cement concrete, a second layer (202b) disposed operatively below and in contact with the first top layer (202a), the second layer (202b) made of macadam, a third layer (202c) disposed operatively below and in contact with the second layer (202b), the third layer (202c) made of a geosynthetic material, and a fourth layer (202d) disposed operatively below and in contact with the third layer (202c), and the fourth layer (202d) made of compact yellow soil. The structure of the impermeable base (202) is so devised to prevent any seepage of the hazardous fluids or any other fluids into the ground which may pose threat to the ground or earth and water therein.

In accordance with one embodiment of the present invention, the plurality of walls (204) can be impermeable and made of concrete. Any other material which may be impermeable can also be used. The permeability is with respect to the fluids that are present or emanate during the process of drying.

In accordance with one embodiment of the present invention, the draining channel (206) is configured to receive and convey the fluid which leaches out from the hazardous waste.

In accordance with one embodiment of the present invention, the roof (208) is made of a material that allows transmission of short wavelength sunrays and reflects long wavelength sunrays. In accordance with one embodiment of the present invention, the roof (208) may include a number of sheets. The sheets can be made of a material selected from the groups consisting of polyacrylic, polycarbonate, tempered glass, ultra-violet polyethylene, and any combinations thereof.

Further, in accordance with one embodiment of the present invention, the roof (208) may be titled at an angle with respect to a horizontal axis, which facilitates in sliding of water falling thereover. Additionally, the roof (208) is further coupled with a draining channel (208a). The draining channel (208a) is configured to receive water from over the roof (208) and channel the collected water into storage.

In accordance with one embodiment of the present invention, the charging mechanism (300) is operatively disposed and in material communication with the enclosure (200). The charging mechanism (300) is configured to charge the hazardous waste into the enclosure (200).

In accordance with one embodiment of the present invention, the charging mechanism (300) comprises a hopper (302) connected to and in fluid communication with the enclosure (200). The hopper (302) is configured to charge hazardous waste into the enclosure (200).

In accordance with one embodiment of the present invention, the dispersing mechanism (400) is operatively disposed within the enclosure (200). The dispersing mechanism (400) is configured to disperse the hazardous waste on to the impermeable base (202) thereby facilitating drying of the hazardous waste.

In accordance with one embodiment of the present invention, the dispersing mechanism (400) comprises a first chain sprocket (402a) rotatably disposed with the enclosure (200), a second chain sprocket (402b) rotatably disposed with the enclosure (200) and spaced apart from the first chain sprocket (402a), an endless chain (404) operatively disposed over each of the first chain sprocket (402a), and the second chain sprocket (402b), spikes (406) extending in an operative upward direction from an upper surface of the endless chain (404), and a chain sprocket drive motor (408) operatively coupled with one of the first chain sprocket (402a), and the second chain sprocket (402b), the chain sprocket drive motor (408) operated by a variable frequency drive, wherein the dispersing mechanism (400) being connected to and in fluid communication with the hopper (302) through an inlet configured on one of the plurality of walls (204), the inlet being covered with a flexible acrylic sheet which prevent ingress of air from outside of the enclosure (200), and egress of air, and volatile gases from within the enclosure (200).

In accordance with one embodiment of the present invention, the dispersing mechanism (400) further includes an electric overhead traveling crane (410) operatively disposed within the enclosure (200), a row tiller (412) operatively connected with the electric overhead traveling crane (410), the row tiller (412) configured to disperse, spread, and move the hazardous waste in rows, and a row tiller drive mechanism (414) coupled with the row tiller (412), and configured to drive the row tiller drive mechanism (414).

In accordance with one embodiment of the present invention, the discharging mechanism (500) is operatively disposed in conjunction with the enclosure (200). The discharging mechanism (500) is configured to discharge a dried hazardous waste from within the enclosure (200).

In accordance with one embodiment of the present invention, the discharging mechanism (500) comprises a hazardous waste conveyor (502) configured to convey dried hazardous waste from within the enclosure (200), a storage pit (504) configured to receive the dried hazardous waste from the hazardous waste conveyor (502), a bucket elevator (506) having an operative first end (506a) thereof operatively disposed in vicinity of the storage pit (504), the bucket elevator (506) configured to receive and convey the dried hazardous waste from the storage pit (504), an intermediate transfer trough (508) being disposed in vicinity of an operative second end (506b) of the bucket elevator (506), the intermediate transfer trough (508) being configured to receive the dried hazardous waste over from the operative second end (506b) of the bucket elevator (506), a screw conveyor (510) having an operative first end (510a) thereof disposed in vicinity of the intermediate transfer trough (508), the screw conveyor (510) configured to receive the dried hazardous waste from the intermediate transfer trough (508), and a storage silo (512) configured to receive the dried hazardous waste received from an operative second end (510b) of the screw conveyor (510), wherein the dried hazardous waste is stored in the storage silo (512).

In accordance with one embodiment of the present invention, the air exhaust mechanism (600) is operatively coupled to and in fluid communication with the enclosure (200). The air exhaust mechanism (600) is configured to draw out volatile gases, and moisture emanating from the hazardous waste being dried, and air from within the enclosure (200).

In accordance with one embodiment of the present invention, the air exhaust mechanism (600) comprises an induced draft fan (602) for drawing out humid contaminated air from within the enclosure (200), a low revolution per minute fan (604) for drawing out humid air from within the enclosure (200), an air extracting duct (606) connected to and in fluid communication with the enclosure (200) via the inducted draft fan (602), the air extracting duct (606) configured to receive the humid contaminated air from within the enclosure (200) and exhaust the same to atmosphere, a chimney (608) connected to and in fluid communication with the enclosure (200) via the low revolution per minute fan (604) and via an activated carbon filter to exhaust the humid air to atmosphere therethrough, and a monitoring platform (610) configured on the chimney (608).

In accordance with one embodiment of the present invention, the system (100) further includes a processor (700), and a memory (800) coupled with the processor (700). The memory (800) is configured to store data, and executables relating to the system, and the processor (700) configured to execute the executables upon receiving one or more commands.

In accordance with one embodiment of the present invention, the processor (700) is operatively coupled with each of the charging mechanism (300), the dispersing mechanism (400), the discharging mechanism (500), the air exhaust mechanism (600), and the memory (800), and is configured to control each of the charging mechanism (300), the dispersing mechanism (400), the discharging mechanism (500), the air exhaust mechanism (600), and the memory (800).

The system (100) is powered by the power supply (900), which is connected to and is configured for supplying power to each of the charging mechanism (300), the dispersing mechanism (400), the discharging mechanism (500), the air exhaust mechanism (600), the processor (700), and the memory (800).

In accordance with one embodiment of the present invention, the system (100) further includes a safety system (1000). The safety system (1000) comprises a high expansion foam generator (1002a) disposed within the enclosure (200), the high expansion foam generator (1002a) configured to generate foam on to the hazardous waste in case of fire, foam dispensers (1002b) connected to and in fluid communication with the high expansion foam generator (1002a), the foam dispensers (1002b) operatively disposed within the enclosure (200) and configured to dispense foam from the high expansion foam generator (1002a);

In accordance with one embodiment of the present invention, safety system (1000) further comprises a fire -hydrant system (1004). The fire-hydrant system (1004) includes a water tank (1004a) configured to store water therein, a fire -hydrant pump (1004b) connected to and in fluid communication with the water tank (1004a), a fire- hydrant duct (1004c) connected to and in fluid communication with the fire -hydrant pump (1004b), the fire -hydrant duct configured to receive water from the water tank (1004a) which being pumped by the fire -hydrant pump (1004b), actuator valves (1004d) disposed in line with the fire -hydrant duct (1004c), the water tank (1004a), and the fire -hydrant pump (1004b), the actuator valves (1004d) configured to be actuated upon receiving signals from a fire -hydrant control panel(1004e).

In accordance with one embodiment of the present invention, the system (100) includes the leachate treatment system (1100). The leachate treatment system includes an underground drainage collecting tank (1102) connected to and in fluid communication with the draining channel (206), the drainage collecting tank (1102) configured to receive leachate from the draining channel (206), man-holes (1104) configured on the underground drainage collecting tank (1102), the man-holes (1104) facilitating access to the underground drainage collecting tank (1102), a pump (1106) configured to transfer the leachate from the underground drainage collecting tank (1102) to a flash mixing chamber (1108), a splash mixing chamber (1108), chemical storing and charging tanks (1110), chemical dosing pumps (1112), tube settlers (1114) for facilitating settling of sludge, filter (1116) for separating solid waste from liquid, and storage tank (1118) for storing treated water.

TECHNICAL ADVANCES AND ADVANTAGES OF THE INVENTION

The presently disclosed invention, as described herein above, provides several technical advances and advantages. The system (100) for drying the hazardous waste is

- Energy efficient as solar energy is efficiently and effectively used for drying the hazardous waste;

- Space efficient as the area required to dry the hazardous waste is reduced substantially as compared with the conventionally known systems and processes;

- Time efficient as the time required to dry the hazardous waste is reduced to a substantial extent;

- Economic as all the three major factors, namely, energy, space, and time are effectively and efficiently used and/or saved; and

Simple, and easy to operate, use, and maintain.