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Sewage treatment device and method by combining bio-ferric process and anaerobic MBR method

A sewage treatment method and bio-iron technology, which are applied in water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve problems such as membrane fouling, strengthen biological effects, and facilitate management and operation. , The device has the effect of compact structure

Inactive Publication Date: 2015-05-27
HOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the AnMBR process and all other MBR processes are facing a common problem: membrane fouling, which is still the key to the popularization and application of this technology
At present, people have tried some methods, such as adding aluminum salt or zeolite powder, adding activated carbon powder, installing a jet aeration device, backwashing, changing operating conditions, etc. to reduce the problem of membrane fouling in membrane bioreactors, but they have not been obtained. good solution

Method used

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  • Sewage treatment device and method by combining bio-ferric process and anaerobic MBR method
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  • Sewage treatment device and method by combining bio-ferric process and anaerobic MBR method

Examples

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Effect test

Embodiment 1

[0034] Such as figure 1 As shown, a sewage treatment device combining biological iron method and anaerobic MBR method is characterized in that: comprising: the water outlet of the water inlet pool 1 is connected to the water inlet of the water inlet pump 2, and the water outlet of the water inlet pump 2 is connected to the anaerobic The water inlet of oxygen membrane bioreactor 3 links to each other, and the top of described anaerobic membrane bioreactor 3 is also respectively connected with the water inlet of biological iron adding device, gas collection device 19, the air inlet of gas flowmeter 7, temperature sensor 16 , redox potential sensor 17, pH sensor 18 are connected with liquid level controller 15, the water outlet of described anaerobic membrane bioreactor 3 is connected with the water inlet of suction pump 4, and the water outlet of described suction pump 4 is connected with The water inlet of the effluent pool 5 is connected; the biological iron addition device co...

Embodiment 2

[0057] Such as figure 1 As shown, a sewage treatment device combining biological iron method and anaerobic MBR method is characterized in that: comprising: the water outlet of the water inlet pool 1 is connected to the water inlet of the water inlet pump 2, and the water outlet of the water inlet pump 2 is connected to the anaerobic The water inlet of oxygen membrane bioreactor 3 links to each other, and the top of described anaerobic membrane bioreactor 3 is also respectively connected with the water inlet of biological iron adding device, gas collection device 19, the air inlet of gas flowmeter 7, temperature sensor 16 , redox potential sensor 17, pH sensor 18 are connected with liquid level controller 15, the water outlet of described anaerobic membrane bioreactor 3 is connected with the water inlet of suction pump 4, and the water outlet of described suction pump 4 is connected with The water inlet of the effluent pool 5 is connected; the biological iron addition device co...

Embodiment 3

[0072] Such as figure 1 As shown, a sewage treatment device and method combining biological iron method and anaerobic MBR method, the iron content of the prepared biological iron flocculant is 5% of the sludge quality, and the temperature in the anaerobic membrane bioreactor 3 is 29 ℃, oxidation-reduction potential of -200mV, pH value of 7.0, sludge concentration of 5g / L, aeration and scour rate of membrane surface aeration device 9 of 8L / m 2 h, the time for water purification in the anaerobic membrane bioreactor 3 is 6 h each time; the remaining contents are the same as in Example 1.

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Abstract

The invention discloses a sewage treatment device and a sewage treatment method by combining a bio-ferric process and an anaerobic MBR method. The method comprises the following steps: step 1, acclimating bio-ferric sludge; step 2, pumping sewage into an anaerobic membrane bioreactor (3) from a water inlet pool (1) by virtue of a water inlet pump (2), and mixing the sewage with the acclimated bio-ferric sludge; step 3, periodically detecting the iron content in the anaerobic membrane bioreactor (3); and step 4, pumping the purified water into a water outlet pool (5) from the water outlet of a microfiltration membrane module (6) by virtue of a suction pump (4). According to the sewage treatment device and the sewage treatment method by combining the bio-ferric process and the anaerobic MBR method provided by the invention, the membrane module is difficultly polluted, the effluent quality is high, the sewage treatment and purification time is short, the service life of the bio-ferric sludge is long, the sewage treatment cost is low, and the method and device are suitable for wide popularization and application.

Description

technical field [0001] The invention relates to a sewage treatment device and method combining a biological iron method and an anaerobic MBR method, belonging to the technical field of sewage treatment. Background technique [0002] Membrane bioreactor (MBR) process, as a new type of sewage treatment process, has been extensively studied. Among them, the integrated anaerobic membrane bioreactor (AnMBR) process has good effluent water quality, high sludge concentration, compact device structure, convenient management and operation, and prolonged sludge residence time (that is, the use of biological iron sludge is long) , less excess sludge production and other advantages, more and more people's attention. However, the AnMBR process and all other MBR processes are facing a common problem: membrane fouling, which is still the key to the popularization and application of this technology. At present, people have tried some methods, such as adding aluminum salt or zeolite powder...

Claims

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Application Information

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IPC IPC(8): C02F9/14
Inventor 陈琳王俊朱亮靳斌斌邱云鹏刘畅
Owner HOHAI UNIV
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