WASTEWATER TREATMENT METHOD OF INCINERATION PLANT

Title:

WASTEWATER TREATMENT METHOD OF INCINERATION PLANT

Document Type and Number:

WIPO Patent Application WO/2016/157969

Kind Code:

A1

Abstract:

A wastewater treatment method for an incineration plant is provided which can efficiently recover the heat of combustion exhaust gas in the incineration plant and can stably and efficiently concentrate wastewater. This wastewater treatment method is for treating wastewater discharged from an incineration plant which is provided with an incineration device 1, a combustion exhaust gas heat recovery device 2, and a temperature reduction device 3 for further reducing the temperature of the combustion exhaust gas from which heat has been recovered by said heat recovery device. This method involves performing a membrane separation step 6 for separating the wastewater discharged from the incineration plant into permeated water and concentrated water by means of a separation membrane, and involves lowering the temperature of the combustion exhaust gas by spraying at least part of said concentrated water into the temperature reduction device 3. A wastewater mixture of at least two types of incineration plant wastewater, namely boiler stored water, boiler blowdown water, cooling tower blowdown water and gray water, is subjected to the membrane separation treatment step 6.

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Inventors:

HAYAKAWA KUNIHIRO (JP)
UCHIDA KAZUYOSHI (JP)
MIZUSHINA KEIICHI (JP)

Application Number:

PCT/JP2016/052263

Publication Date:

October 06, 2016

Filing Date:

January 27, 2016

Export Citation:

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Assignee:

KURITA WATER IND LTD (JP)

International Classes:

C02F1/44; B01D53/40; B01D53/58; B01D53/84; B01D61/02; B01D61/14; B01D61/16; B01D61/58; C02F1/12; C02F1/52; C02F3/34; C02F9/00

Foreign References:

JP2016030243A	2016-03-07
JP2015128754A	2015-07-16
JP2011016100A	2011-01-27
JP2006281171A	2006-10-19
JPH1099898A	1998-04-21
JP2014024049A	2014-02-06

Attorney, Agent or Firm:

SHIGENO, Tsuyoshi et al. (JP)
Takeshi Shigeno (JP)

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