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Batch type aerobic particle sludge membrane bioreactor sewage treatment technique

An aerobic granular sludge, membrane bioreactor technology, applied in biological water/sewage treatment, water/sludge/sewage treatment, sustainable biological treatment, etc. Membrane life, the effect of reducing membrane sludge, reducing contact opportunities and area

Inactive Publication Date: 2008-01-09
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

And the process is complicated and the cost is high

Method used

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Effect test

Embodiment 1

[0023] A sequencing batch type aerobic granular sludge membrane bioreactor sewage treatment process is to realize aerobic sludge granulation in a columnar bioreactor in a sequenced batch operation mode, pumping through the membrane module submerged in the reactor Suck out the water. The membrane module is a tubular hollow microfiltration membrane produced by Tianjin Motianmo Co., Ltd., with a pore size of 0.2 μm, which is naturally placed at half the height of the reactor. The outlet water is sucked out by the vacuum pump (pumping for 10 minutes, resting for 5 minutes), and aeration is maintained during the water outlet. The operation of the water inlet pump and the air pump is controlled by a time relay. The reactor is a plexiglass column with an effective volume of 32L.

[0024] The specific process steps are:

[0025] 1. The water pump pumps the sewage to be treated into the sequencing batch aerobic granular sludge membrane bioreactor within 20 minutes through the water ...

Embodiment 2

[0030] A sequencing batch type aerobic granular sludge membrane bioreactor sewage treatment process is to realize aerobic sludge granulation in a columnar bioreactor in a sequenced batch operation mode, pumping through the membrane module submerged in the reactor Suck out the water. The membrane module is a tubular hollow microfiltration membrane produced by Tianjin Motianmo Co., Ltd., with a pore size of 0.2 μm, which is naturally placed at half the height of the reactor. The outlet water is sucked out by the vacuum pump (pumping for 10 minutes, resting for 5 minutes), and aeration is maintained during the water outlet. The operation of the water inlet pump and the air pump is controlled by a time relay. The reactor is a plexiglass column with an effective volume of 32L.

[0031] The specific process steps are:

[0032] 1. The water pump pumps the sewage to be treated into the sequencing batch aerobic granular sludge membrane bioreactor within 2 minutes through the water i...

Embodiment 3

[0037] A sequencing batch type aerobic granular sludge membrane bioreactor sewage treatment process is to realize aerobic sludge granulation in a columnar bioreactor in a sequenced batch operation mode, pumping through the membrane module submerged in the reactor Suck out the water. The membrane module is a tubular hollow microfiltration membrane produced by Tianjin Motianmo Co., Ltd., with a pore size of 0.2 μm, which is naturally placed at half the height of the reactor. The outlet water is sucked out by the vacuum pump (pumping for 10 minutes, resting for 5 minutes), and aeration is maintained during the water outlet. The operation of the water inlet pump and the air pump is controlled by a time relay. The reactor is a plexiglass column with an effective volume of 32L.

[0038] The specific process steps are:

[0039] 1. The water pump pumps the sewage to be treated into the sequencing batch aerobic granular sludge membrane bioreactor within 10 minutes through the water ...

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Abstract

This invention relates to waste-water treatment process by using batch-type aerobic granular sludge membrane reactor. The procedures are: influent of domestic sewage being fed-in, aeration, intermittent drainage, settlement, drainage and reflux. This invention method makes the sludge in the reactor being of granulated. The whole system proceeds, periodically, aerobic, anaerobic and facultative aerobic condition treatment; so, it can remove carbon-containing organic pollutants, and also nitrogen and phosphorus nutritive elements and the like. This inventive method is used for treatment of urban domestic sewage, with COD removal rate being up to more than 95%, the ammonia-nitrogen being kept less than 1mg / L, total nitrogen and total phosphorus removal rate being more than 90% and 45% respectively. This invention method reduces, obviously, membrane contamination, lowers the speed of reducing rate of membrane-flux by 50%. And the membrane-flux can be recovered to original condition just by hydraulic washing. The inventive method can produce excellent economic benefit and environmental benefit.

Description

technical field [0001] The invention relates to a sewage treatment process, in particular to a sequence batch type aerobic granular sludge membrane bioreactor sewage treatment process. Background technique [0002] The existing membrane bioreactor (Membrane Bioreactor, MBR) is a new type of wastewater treatment technology formed by combining biological treatment and membrane technology, which can efficiently separate solids and liquids, increase volume load, and save floor space. The traditional MBR mainly uses activated sludge as the main body of biological treatment. During operation, activated sludge is easy to deposit on the surface of the membrane, causing membrane pollution; at the same time, the high concentration of activated sludge in the reactor will also cause the viscosity of sewage to increase. , affect the oxygen transfer efficiency, and then affect the effluent water quality. Therefore, the characteristics of the sludge in the mixed liquor in MBR are one of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/12
CPCY02W10/10
Inventor 王曙光巩文信孙雪菲刘贤伟张成禄
Owner SHANDONG UNIV
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