Membrane bioreactor sludge reduction sewage treatment technology

A membrane bioreactor and sewage treatment technology, which is applied in biological water/sewage treatment, water/sludge/sewage treatment, water/sewage multi-stage treatment, etc., can solve the problem of low sludge organic matter content and lack of sludge incineration tail gas Emission standards, incineration investment, energy consumption, secondary pollution, and the difficulty of popularizing technology for destination products, etc., to achieve the effect of reducing emissions and maintaining good stability of effluent water quality

Pending Publication Date: 2016-11-09
赵治平
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Problems solved by technology

[0005] Due to the low content of organic matter in sludge in my country, the promotion of sludge anaerobic digestion technology is limited; my country lacks sludge incineration tail gas emission standards and problems such as incineration investment, energ

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  • Membrane bioreactor sludge reduction sewage treatment technology

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[0024] The present invention will be further described in detail below in conjunction with specific embodiments.

[0025] The present invention will be further described in detail below in conjunction with embodiments, but the present invention is not limited to the given embodiments:

[0026] A membrane bioreactor sludge reduction sewage treatment technology includes the following steps:

[0027] Step 1: The sewage passes through the aerated grit tank to remove inorganic particles in the sewage, which is conducive to subsequent treatment. The aerated grit tank must have a good effect;

[0028] Step 2: Sewage enters the anoxic reaction tank after passing through the aerated grit settling tank. The dissolved oxygen in the anoxic reaction tank D0≤0.5mg / L, and the phosphorus accumulating bacteria in the anoxic reaction tank neither absorb or release phosphorus Phosphorus, total phosphorus TP remains stable;

[0029] Step 3: The sewage after anoxic reaction enters the anaerobic reaction ta...

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Abstract

The invention discloses a membrane bioreactor sludge reduction sewage treatment technology. The technology comprises the following steps that inorganic particles are removed for sewage in an aerated grit chamber, and the treated sewage passes through an anoxic reaction chamber, an anaerobic reaction chamber, a pre-aerobic reaction chamber and a membrane bio-reactor (MBR) in sequence, wherein part of mixed liquor in the pre-aerobic reaction chamber flows back to the anaerobic reaction phase, the other part of the mixed liquor enters the membrane bio-reactor (MBR) for mud-water separation, separated clear water is discharged, and remained activated sludge flows back to the anoxic reaction chamber. According to the membrane bioreactor sludge reduction sewage treatment technology, exogenous preparations such as enzymic preparations, chemical uncoupler and oxidant do not need to be added, a specified sludge treatment system is not needed at the rear stage of the technology, and secondary pollution of sludge landfilling, incineration, heat treatment and the like to environment is reduced.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a membrane bioreactor sludge reduction sewage treatment technology. Background technique [0002] With the rapid development of urbanization and industrialization in our country, the corresponding amount of sewage discharge increases, and the amount of residual sludge generated in the process of sewage treatment is also increasing day by day, and increases at a rate of 10%-15% per year, and sludge pollution is also increasing. It is getting more and more serious, the cost of sludge treatment and disposal is high, and the problem is prominent. A large amount of surplus sludge has become a new source of environmental pollution. [0003] With the rapid urbanization process, the sludge treatment load has increased dramatically. According to the content of the "Twelfth Five-Year Plan", by 2015, my country's daily sewage treatment capacity will reach 208 million cubic meters,...

Claims

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Application Information

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IPC IPC(8): C02F9/14
CPCC02F9/00C02F3/28C02F3/1268C02F3/02C02F1/52C02F2301/08
Inventor 龙斐霏赵治平
Owner 赵治平
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