Method for improving efficiency of anaerobic baffled reactor and pulse-type anaerobic baffled reactor

A baffled anaerobic reactor technology, which is applied in the field of improving the COD removal rate of wastewater by baffled anaerobic reactors, can solve the problems of insufficient mixing of biological sludge and influent substrate and low COD removal rate of wastewater, etc. Achieve the effect of reducing costs and increasing the speed of water flow

Inactive Publication Date: 2011-04-06
INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY +1
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Problems solved by technology

[0007] In order to solve the problem that the existing anaerobic reactor has a low COD removal rate in wastewater and that the biological sludge and the influent matrix cannot be fully mixed, the present invention provides a A method for improving the efficiency of a baffled anaerobic reactor and a pulsating baffl

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  • Method for improving efficiency of anaerobic baffled reactor and pulse-type anaerobic baffled reactor
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  • Method for improving efficiency of anaerobic baffled reactor and pulse-type anaerobic baffled reactor

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[0022] A method to improve the efficiency of the baffled anaerobic reactor. The effluent treated by the baffled anaerobic reactor first enters the sump, part of the wastewater in the sump enters the aerobic aeration tank of the next processing unit, and part of the wastewater passes through the pump Control, the inlet of the baffled anaerobic reactor enters the baffled anaerobic reactor again to form a reflux; the flow of wastewater returning from the sump to the baffled anaerobic reactor accounts for 30% of the flow of wastewater entering the baffled anaerobic reactor ~100%.

[0023] The effective volume of the sump is 1 / 100 to 8 / 100 of the effective volume of the baffled anaerobic reactor, that is, the volume of the sump can store the output of the baffled anaerobic reactor for 6 to 20 minutes. Water volume.

[0024] The wastewater is controlled by a water pump and enters the baffled anaerobic reactor again from the inlet of the baffled anaerobic reactor, forming a continuous ba...

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Abstract

The invention relates to a method for improving the efficiency of an anaerobic baffled reactor and a pulse-type anaerobic baffled reactor. Effluent treated by the anaerobic baffled reactor enters a water collecting tank and then partially enters a next processing unit, part of waste water enters the anaerobic baffled reactor again through an inlet of the anaerobic baffled reactor, and the flow ofwaste water which reflows to the anaerobic baffled reactor from the water collecting tank is 30%-100% of the flow of the waste water entering the anaerobic baffled reactor. The pulse-type anaerobic baffled reactor comprises the anaerobic baffled reactor, the water collecting tank and a water pump. Through the intermittent operation of the reflux water pump, impulse is endowed onto the water flow in the anaerobic baffled reactor to form impact on anaerobes at the bottom of the anaerobic baffled reactor, or the linear speed of the water flow in the anaerobic baffled reactor is improved when thewaste water quantity is lower, thereby promoting the full mixing of the waste water and anaerobic sludge; and shown by results, the COD (Chemical Oxygen Demand) removal ratio of the waste water by the anaerobic baffled reactor is improved by 18-32%, and the methane output is improved by 15-29%; meanwhile, the cost of waste water treatment is reduced.

Description

technical field [0001] The present invention relates to the field of wastewater treatment, in particular to a method that can be widely used in the treatment of high-concentration organic wastewater in the fields of papermaking, light industry, chemical industry, food, and pharmaceuticals to improve the COD removal rate of wastewater by a baffled anaerobic reactor . [0002] Background technique [0003] With the implementation of my country's energy-saving and emission-reduction strategy, all walks of life are working hard to reduce the discharge of wastewater, and the concentration of wastewater is increasing year by year. For the treatment of high-concentration organic wastewater, it is currently considered that the best treatment technology is anaerobic method. The method utilizes the metabolic characteristics of anaerobic microorganisms, and uses the reduced organic matter as a hydrogen acceptor under the condition of not needing to provide external energy, and simult...

Claims

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Application Information

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IPC IPC(8): C02F3/28
Inventor 施英乔符芳蓉胡笳卢雯杨光房桂干丁来保盘爱享邓拥军沈葵忠李萍
Owner INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY
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