Application of membrane bioreactor based on stainless steel fine filtering device in sewage treatment

A membrane bioreactor, sewage treatment technology, applied in biological water/sewage treatment, sustainable biological treatment, water/sewage multi-stage treatment, etc., can solve the problems of high investment cost, high maintenance cost and high operating energy consumption, Achieve the effect of low investment cost, low maintenance cost and low operating cost

Inactive Publication Date: 2011-08-10
PIONEER ENVIRONMENTAL TECH PTE
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AI Technical Summary

Problems solved by technology

[0008] In order to overcome the problems of low membrane flux, serious pollution, short membrane life, high investment cost, high maintenance cost, and high energy consumption in operation in traditional MBR, this invention proposes a new type of membrane using high-precision stainless steel filter mesh as the core filter element. Bioreactor (MBR), a new generation of innovative sewage treatment equipment and methods

Method used

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  • Application of membrane bioreactor based on stainless steel fine filtering device in sewage treatment
  • Application of membrane bioreactor based on stainless steel fine filtering device in sewage treatment
  • Application of membrane bioreactor based on stainless steel fine filtering device in sewage treatment

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Embodiment

[0031] figure 1 A membrane bioreactor with a stainless steel wire mesh fine filtration module is shown.

[0032] After coarse filtration and initial sedimentation, the sewage is pumped into bioreactor 2. The liquid level of the sewage is monitored by the liquid level gauge 18, and the signal is transmitted to the PLC control cabinet to control the opening and closing of the sewage pump and the inlet 1. The aeration system of biochemical pool is made up of fan 13, air valve 14, air flow meter 15 and aerator 17. The flow of air is adjusted by PLC controlling the air valve 14 . The stainless steel wire mesh fine filter assembly 3 is connected to the water outlet system. The outlet system consists of outlet pressure gauge 4, outlet valve 5, outlet pump 6 and outlet flow meter 7. The outlet water flowmeter transmits the signal to the PLC control system, and maintains a balanced outlet water (150-200L / m 2 h). The negative pressure of the outlet water is less than 0.02MPa. Th...

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Abstract

The invention discloses an application of a membrane bioreactor based on a stainless steel fine filtering device in sewage treatment. A conventional membrane bioreactor (MBR) is improved in a manner that organic membrane, non-woven fabric, ceramic membrane and membranes in other materials are replaced by a high-accuracy stainless steel filter screen. The hole diameter of the stainless steel filter screen can be ranged from 1 Mum to 10 Mum. The stainless steel filter screen can be processed into a filtering assembly in the shape of a panel, a tube, a folding tube or others. Combined with an assembly rack, a water outlet hole and a collecting pipe, the stainless steel filter screen is used in a bioreactor, forming a novel sewage treatment device. The invention completely solves the problem of the conventional MBR brought by membrane pollution and low membrane flux, bringing a broader prospect to the application of the MBR in sewage treatment.

Description

technical field [0001] The invention relates to a sewage treatment method of a membrane bioreactor, in particular to a method of using a high-precision stainless steel filter net as the core filter device of the membrane bioreactor to replace the organic and inorganic membrane filters commonly used in traditional membrane bioreactors. Background technique [0002] Membrane Bioreactor (MBR) water treatment technology is a new type of water treatment technology that combines high-efficiency membrane separation technology and activated sludge method (T.Stephenson, S.Judd, B.Jefferson and K.Brindle, Membrane Bioreactors for Wastewater Treatment, IWA Publishing: London, 2000.). Due to the filtration effect of the membrane, microorganisms and sludge are completely trapped in the bioreactor, and the complete separation of hydraulic retention time and sludge age is realized, so that the biological unit has a high sludge concentration and improves its removal of organic matter. Rate...

Claims

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Application Information

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IPC IPC(8): C02F3/10C02F3/12C02F9/14
CPCY02W10/10
Inventor 杨国英
Owner PIONEER ENVIRONMENTAL TECH PTE
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