Membrane bioreactor and use thereof in wastewater treatment

A membrane bioreactor, biochemical reactor technology, applied in the direction of water/sewage multi-stage treatment, water/sludge/sewage treatment, osmosis/dialysis water/sewage treatment, etc., can solve the problem of limited cleaning effect and achieve friction Good cleaning effect, high biochemical reaction efficiency, and thorough cleaning effect

Active Publication Date: 2011-04-06
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0018] This method improves the cleaning effect of the membrane surface by increasing the turbulent intensity of the liquid flow, and is effective in slowing down the deposition of pollutants on the membrane surface and improving the cleaning efficiency. However, since the disturbance device is a static device, the kinetic energy of the liquid flow is used to clean the membrane surface. The cleaning effect is limited when the ratio is unlikely to be too large

Method used

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  • Membrane bioreactor and use thereof in wastewater treatment
  • Membrane bioreactor and use thereof in wastewater treatment
  • Membrane bioreactor and use thereof in wastewater treatment

Examples

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Embodiment 1

[0048] 1. Membrane bioreactor

[0049] The membrane bioreactor includes: a biochemical reactor 1, a slurry pump 2, an air compressor 3, a pulse valve 4, a membrane module 5, a water production tank 6, a backwash water supply pump 7, and a water production pump 8.

[0050] The biochemical reactor 1 is equipped with a granular biofilm medium, which is made of olive shell activated carbon, with an average particle size of 1.5 mm, a uniformity coefficient of 1.1 to 1.2, a molasses value of >150 mg / g, and a strength of ≮97%. The bulk density is 500-520g / L, and the filler dosage is 30-60% (based on the volume ratio of the granular biofilm medium to the waste water in the biochemical reactor 1).

[0051] The biochemical reactor 1 is a tank, the upper part of which is a biochemical reaction zone 11 , the lower part is a granular biofilm medium sedimentation zone 12 , and the bottom is an activated sludge concentration zone 13 . The biochemical reaction zone 11 is provided with a wate...

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PUM

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Abstract

The invention discloses a membrane bioreactor and an application method thereof in wastewater treatment. The membrane bioreactor comprises a biochemical reaction unit which adopts a particle biofilm medium, a pulse type air supply unit and a membrane filtering unit, wherein, a pulse airflow transforms wastewater entering the membrane filtering unit into pulse aerated flow, the particle biofilm medium in the wastewater is fluidized and rubbed and scraped with a membrane component, and fouling sedimentary on the membrane surface is removed. The membrane bioreactor and the application method have the advantages that the biochemical treatment of the particle biofilm medium has good effect, and the effect of rubbing and cleaning the membrane component is good; combined with the disturbing strengthening cleaning effect of the pulse aerated flow, synergistic effect is played, thus improving the membrane pollution preventing effect of an MBR unit, reducing the running cost of the unit, and being applicable to various wastewater treatment occasions.

Description

technical field [0001] The invention relates to a membrane bioreactor, in particular to a membrane bioreactor adopting a granular biofilm medium and a pulse gas supply unit and its application in wastewater treatment. Through the continuous and efficient self-cleaning of the membrane module, the invention realizes the continuous production of the membrane bioreactor. Background technique [0002] With the rapid development of the economy and the acceleration of urbanization, the consumption of fresh water and the discharge of various sewage are increasing year by year, which puts forward higher and higher requirements for the protection and efficient use of water resources. At present, the shortage of water resources in northern my country and some large and medium-sized cities has become very prominent, and sewage treatment and resource utilization are playing an increasingly important role in the healthy development of the economy. [0003] Membrane Bioreactor (MBR) is a ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14C02F1/44C02F1/52
Inventor 李宏伟李怀印
Owner CHINA PETROLEUM & CHEM CORP
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