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Dynamic membrane anaerobic-aerobic circular integration sewage treatment method

A sewage treatment method and recycling treatment technology, which is applied in the direction of water/sewage multi-stage treatment, water/sludge/sewage treatment, aerobic and anaerobic process treatment, etc., can solve the problems of low efficiency, high investment cost, equipment occupation Large area and other problems, to achieve the effect of increased concentration, high operating costs, and large power consumption

Inactive Publication Date: 2014-03-26
XIAMEN UNIV
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  • Description
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AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide an efficient and economical dynamic membrane anaerobic-aerobic cycle integrated sewage treatment method for the problems of low efficiency, large equipment footprint and high investment cost in the existing sewage treatment

Method used

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  • Dynamic membrane anaerobic-aerobic circular integration sewage treatment method
  • Dynamic membrane anaerobic-aerobic circular integration sewage treatment method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment I（1～3）

[0023] Type of waste water: Domestic sewage.

[0024] see figure 1 , the specific steps of the dynamic membrane anaerobic-aerobic cycle integrated sewage treatment method are given below:

[0025] 1) The raw water first enters the anaerobic pool 3 and the aerobic pool 8 of the dynamic membrane anaerobic-aerobic cycle integrated reaction system through the regulating pool. The anaerobic pool 3 has a built-in heating and stirring device 4, and the bottom of the anaerobic pool 3 discharges sludge; good Perforated aeration pipes and a flow control device are arranged in the oxygen tank 8, and the external air compressor 7 is blown and aerated, and the aeration rate is controlled by a rotameter, and mud is discharged from the bottom of the aerobic tank 8; the anaerobic tank 3 The temperature is 15-35°C, the stirring speed of the heating and stirring device 4 is 60-200r / min; the aeration rate is 0.5-10L / min; the dissolved oxygen DO of the aerobic tank 8 is 2.0-6.0mg / L, the temper...

Embodiment II

[0032] Embodiment II (1~3)

[0033] Similar to Example 1, the difference is that the type of wastewater is printing and dyeing wastewater. According to the influent organic load, the hydraulic retention time and circulation flow rate are determined, so that the domestic sewage is circulated through the dynamic membrane in the anaerobic tank and the aerobic tank respectively to complete the degradation of anaerobic and aerobic microorganisms, and the different degradation times are measured. COD, SS, DO, pH value, temperature and other indicators of the water body in the pool. The treatment effect of the waste water of embodiment II is shown in Table 1.

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Abstract

The invention relates to a dynamic membrane anaerobic-aerobic circular integration sewage treatment method, which relates to sewage treatment. Raw water enters into an anaerobic tank and an aerobic tank through an adjusting tank; a heating and stirring device is arranged in the anaerobic tank; a perforated aerator pipe and a flow control device are arranged in the aerobic tank; blast aeration is carried out through an external air compressor; the aeration quantity is controlled through a rotameter; spoil disposal is carried on the bottom parts of the anaerobic tank and the aerobic tank; dynamic membrane components are put in the anaerobic tank and the aerobic tank; sewage in the anaerobic tank is pumped into the aerobic tank through water outlets of the membrane components by a constant flow pump, and sewage in the aerobic tank is pumped into the anaerobic tank through the water outlets of the membrane components by the constant flow pump, so that simultaneous continuously cycled treatment of the sewage in the anaerobic tank and the aerobic tank can be formed in time and space, and a treatment process for the sewage is completed; and the water inflow velocity and the circulation velocity can be controlled through the constant flow pump according to waste water quality types, water volume and organic loading, so that the wastewater can be circularly treated in the anaerobic tank and the aerobic tank through the dynamic membrane.

Description

technical field [0001] The invention relates to a sewage treatment method, in particular to a dynamic membrane anaerobic-aerobic circulation integrated sewage treatment method. Background technique [0002] With the rapid development of industrial technology, industrial wastewater discharged from printing and dyeing, chemical, food, paper and other industries has become one of the problems that need to be solved urgently in the field of sewage treatment. In recent years, wastewater biological treatment technology has shifted from the traditional single anaerobic method and aerobic method to anaerobic-aerobic combined treatment method, but there are problems such as large amount of residual sludge, high energy consumption, and large occupied area. [0003] Membrane-bioreactor (MBR) is a new system that combines membrane separation technology and wastewater biological treatment technology. This system replaces the secondary sedimentation tank in the secondary biological treatm...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14C02F3/30
Inventor 王海涛李清彪李薇何宁王远鹏
Owner XIAMEN UNIV
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