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Method for stably operating bacteria-algae symbiotic aerobic granular sludge membrane bioreactor

A membrane bioreactor, aerobic granular sludge technology, used in chemical instruments and methods, biological water/sewage treatment, water/sludge/sewage treatment, etc., to achieve long-term stable operation, reduce adhesion, and reduce clogging. effect of chance

Inactive Publication Date: 2021-01-05
CHONGQING TECH & BUSINESS UNIV +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, no one has systematically studied the stable operation of bacterial and algae symbiotic aerobic granular sludge membrane bioreactors

Method used

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  • Method for stably operating bacteria-algae symbiotic aerobic granular sludge membrane bioreactor
  • Method for stably operating bacteria-algae symbiotic aerobic granular sludge membrane bioreactor
  • Method for stably operating bacteria-algae symbiotic aerobic granular sludge membrane bioreactor

Examples

Experimental program
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Effect test

Embodiment 1

[0036] A method for the stable operation of a bacteria-algae symbiotic aerobic granular sludge membrane bioreactor, using a membrane bioreactor, basically as attached figure 1 As shown, the membrane bioreactor includes a body and a culture area 6 for cultivating bacteria and algae symbiotic aerobic granular sludge, and a sedimentation area 61 is arranged between the culture area 6 and the body. The light source used to cultivate the symbiotic aerobic granular sludge of bacteria and algae comes from sunlight. A membrane module is arranged in the main body, and a main water pipe 3 is arranged in the membrane module, and the main water pipe 3 is connected with a peristaltic pump 2 . The body and the bottom of the cultivation area 6 are provided with an aeration box, and also include an air pump 5, and the air pump 5 is communicated with a main air pipe communicating with the aeration box.

[0037] Including the following steps:

[0038] S1: Inoculate the mature bacteria-algae s...

Embodiment 2

[0053] The difference between the second embodiment and the first embodiment is that the attached figure 2 And attached image 3 As shown, the membrane bioreactor includes a frame and a body 1 installed on the frame, and the body 1 is provided with a sewage outlet 11 .

[0054] Several membrane assemblies 4 are arranged in the body 1, and the membrane assemblies 4 include a bracket 14 and a filter membrane 15 arranged on the bracket 14. The upper part of the filter membrane 15 is rotatably connected with a support plate 16 fixedly connected with the body 1 by bolts, so as to support the filter membrane Stable support. An auxiliary water pipe 31 is arranged in the filter membrane 15, and a peristaltic pump 2 is fixed on the frame. The bottom of the membrane module 4 is provided with an aeration box 12 which is bolted to the body 1 , and the top wall of the aeration box 12 is provided with an air hole 13 . The aeration boxes 12 are all communicated with an auxiliary air pipe...

Embodiment 3

[0064] The difference between embodiment three and embodiment one is that, as attached Figure 6 As shown, the membrane module 4 includes a bracket 14 and a filter membrane 15 , the filter membrane 15 is screwed on the bracket 14 , the bottom of the bracket 14 protrudes into the aeration box 12 , and the bracket 14 is rotatably connected with the aeration box 12 . The bottom bolt of the bracket 14 is fixed with the fan blade 17 located in the aeration box 12 , and the fan blade 17 is located at the connection between the aeration box 12 and the secondary air pipe 52 . Of course, the aeration box 12 in the cultivation area 6 is also rotatably connected with fan blades 17 .

[0065] When performing S3, the gas enters the aeration box 12, the gas will push the fan blade 17 to rotate, the fan blade 17 will drive the bracket 14 to rotate, and then the bracket 14 will drive the filter membrane 15 to rotate. When the filter membrane 15 rotates, the centrifugal force Under the action...

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Abstract

The invention relates to the technical field of sewage treatment, and discloses a method for stably operating a bacteria-algae symbiotic aerobic granular sludge membrane bioreactor, which comprises the following steps: S1, inoculating mature bacteria-algae symbiotic aerobic granular sludge into the membrane bioreactor to complete the construction of the bacteria-algae symbiotic aerobic granular sludge membrane bioreactor; S2, injecting sewage into the bacteria-algae symbiotic aerobic granular sludge membrane bioreactor for 3-20 minutes; S3, aerating the bacteria-algae symbiotic aerobic granular sludge membrane bioreactor, and driving a membrane assembly in the bacteria-algae symbiotic aerobic granular sludge membrane bioreactor to rotate in the aeration process; S4, after 297-315 minutes,stopping aeration, settling the sludge mixed solution in the bacteria-algae symbiotic aerobic granular sludge membrane bioreactor for 5-15 minutes, and carrying out suction filtration on the sewage treated by the bacteria-algae symbiotic aerobic granular sludge for 10-55 minutes by virtue of a membrane component; and S5, repeating the steps S2 to S4. According to the invention, the membrane pollution of the membrane module can be reduced, and the service life of the membrane module is prolonged, so that the bacteria-algae symbiotic aerobic granular sludge membrane bioreactor can stably operatefor a long time.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a method for stable operation of a bacteria-algae symbiotic aerobic granular sludge membrane bioreactor. Background technique [0002] Membrane bioreactor is a sewage treatment technology that combines biological treatment unit and membrane separation technology. There are many advantages such as low output. In order to further improve the sewage treatment effect of the membrane bioreactor, aerobic granular sludge was inoculated into the membrane bioreactor to construct an aerobic granular sludge membrane bioreactor, which can improve the sewage treatment effect of the reactor. [0003] However, the aerobic granular sludge membrane bioreactor system often faces the problem that the structure of aerobic granular sludge is easily unstable and the irreversible membrane resistance increases, which makes the process difficult to operate stably. This problem has become a tech...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14
CPCC02F3/1268C02F3/34C02F3/322C02F1/52C02F2303/14
Inventor 张冰黄冬梅时文歆申渝高旭
Owner CHONGQING TECH & BUSINESS UNIV
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