Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
METHOD AND APPARATUS FOR TREATING WASTEWATER CONTAINING SURFACTANT
Document Type and Number:
Japanese Patent JP3659840
Kind Code:
B2
Abstract:

PROBLEM TO BE SOLVED: To stably enhance the decomposition treatment of a surfactant in wastewater by increasing the supply amt. of wastewater set low with respect to the max. treatment capacity of a wastewater treatment apparatus by keeping the treatment efficiency of the surfactant in wastewater optimum by restricting the inflow amt. of wastewater by using the foaming originating from the surfactance as an index.
SOLUTION: Wastewater containing a surfactant is supplied from a supply pipe 11 to be introduced into the biological reaction section 2 in a reaction tank 1 to decompose the surfactant in wastewater by the decomposing microorganism group of a fixed bed 5 and treated water passes under a slit 4 to flow to an aeration section 3. Next, air is blown in the treated water in the aeration section 3 by an air feeder 14 to sufficiently supply oxygen necessary for aerobic decomposition. The foaming generated in the reaction tank 1 is detected by a foam sensor 10 by starting a wastewater inflow amt. control device and, since a flow rate controller 13 can regulate the supply amt. of wastewater of a pump 9 corresponding to a foaming degree and the inflow amt. of wastewater can be increased to a degree not generating foaming, the treatment capacity of the fixed bed 5 can be developed maximally.


More Like This:
JP2003104446PACKAGED COMMODITY, AND PACKAGING STRUCTURE
WO/2010/122669NOVEL COMPOUND AMYCOLAMICIN, METHOD FOR PRODUCTION THEREOF, AND USE THEREOF
JP6927483A novel compound having bone metabolism inhibitory activity and a method for producing the same
Inventors:
Hideki Sawai
Takeshi Nakamura
Application Number:
JP16966399A
Publication Date:
June 15, 2005
Filing Date:
June 16, 1999
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
MITSUBISHI HEAVY INDUSTRIES,LTD.
International Classes:
C12N1/20; C02F3/34; (IPC1-7): C02F3/34; C12N1/20
Domestic Patent References:
JP6296987A
JP2238877A
JP53075381A
JP9314163A
JP6206086A
Attorney, Agent or Firm:
Nao Okuyama
Arihara Koichi
Shoichi Okuyama



 
Previous Patent: FLUID PRESSURE CYLINDER

Next Patent: REAPING PART SUPPORTING STRUCTURE FOR REAPING HARVESTER