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Gravity action based strengthened-separation columnar integrated membrane bioreactor

A bioreactor, enhanced separation technology, applied in sustainable biological treatment, chemical instruments and methods, biological water/sewage treatment, etc., can solve the problems of membrane module pollution easily polluted, easy to destroy the formation conditions of anaerobic nitrification, etc.

Active Publication Date: 2020-03-06
ZHEJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention aims at the shortcomings of the existing technology that the membrane module is easily polluted and easily destroyed the formation conditions of anaerobic nitrification, and provides a columnar integrated membrane bioreactor with enhanced separation based on gravity

Method used

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  • Gravity action based strengthened-separation columnar integrated membrane bioreactor
  • Gravity action based strengthened-separation columnar integrated membrane bioreactor
  • Gravity action based strengthened-separation columnar integrated membrane bioreactor

Examples

Experimental program
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Effect test

Embodiment 1

[0026] The enhanced separation columnar integrated membrane bioreactor based on gravity, as shown in the figure, includes a reactor shell 1, the lower end of the reactor shell 1 is provided with a water inlet 11, and the upper end of the reactor shell 1 is provided with a water outlet 12. The reactor shell 1 is a hollow cylinder, and also includes an adjustable aeration device 2. The adjustable aeration device 2 includes an aeration pipe 21 and a gas transmission main pipe 22. The gas transmission main pipe 22 is connected to the aeration pipe 21 and directed to The aeration tube 21 supplies air, and there are many aeration tubes 21. The aeration tubes 21 are inserted into the reactor shell 1 in sequence along the vertical direction and aerate different levels in the reactor shell 1. Each aeration tube Regulating valves 210 are installed on the pipes 21 .

[0027] The aeration pipe 21 includes an upper aeration pipe 211 and a lower aeration pipe 212. There are multiple lower a...

Embodiment 2

[0030] Same as Example 1, the difference is that a concentric annular separation device 3 is also installed in the reactor shell 1, and the concentric annular separation device 3 includes a plurality of separation rings 31 nested in each other, and the diameter of the ring surface of the separation ring 31 is from top to gradually decreases, the smaller angle between the annulus of the separation ring 31 and the horizontal plane is α, and α is adjustable. The separation rings 31 in the same group of concentric ring separation devices 3 are arranged in parallel, and the distances between the separation rings 31 in the same group of concentric ring separation devices 3 are the same.

[0031] A biofilm is hung on the separation ring 31 .

[0032]Also comprise the retaining ring 32 that is installed on the separating ring 31, the lower ring surface of the retaining ring 32 is affixed to the upper annular surface of the separating ring 31, the diameter of the ring surface of the re...

Embodiment 3

[0036] Same as embodiment 1, the difference is that it also includes a sludge return device 4, the sludge return device 4 includes an inlet pipe 41 and an outlet pipe 42, the outer end of the inlet pipe 41 and the outer end of the outlet pipe 42 communicate with each other, and the inlet pipe The inner end of 41 and the inner end of outlet pipe 42 are all communicated with the inside of reactor shell 1, the inner end of inlet pipe 41 is located at the upper side of lower aeration pipe 212, and the inner end of outlet pipe 42 is located at the upper side from bottom to top. On the horizontal plane where the two lower aeration pipes 212 are located, both the inlet pipe 41 and the outlet pipe 42 are provided with backflow regulating valves 43 .

[0037] The inlet pipe 412 is provided with a plurality of inlets 411 communicating with the inside of the reactor shell 1, and the inlets 411 are distributed around the reactor shell 1 and transport the sludge back inward.

[0038] For c...

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Abstract

The invention relates to membrane bioreactors and discloses a gravity action based strengthened-separation columnar integrated membrane bioreactor. The gravity action based strengthened-separation columnar integrated membrane bioreactor comprises a reactor shell (1) and further comprises an adjustable aeration device (2), wherein the adjustable aeration device (2) comprises aerating pipes (21) andan air conveying header pipe (22), the aerating pipes (21) are sequentially inserted into the reactor shell (1) along a vertical direction and aerate the interior of the reactor shell (1) of different horizontal heights, and an adjusting valve (210) is mounted on each aerating pipe (21). According to the gravity action based strengthened-separation columnar integrated membrane bioreactor, throughcarrying out adaptive control on A / O section and sludge refluxing and high-shear crosscurrent section of water body, corresponding ingredients are thoroughly degraded through a biodegradation section; sludge is separated from other ingredients on the basis of gravitational separation and mechanical separation (biofilm formation), and a good membrane section environment is created; trapped separation is carried out on the basis of a high-shear crosscurrent membrane assembly; and all modules in the reactor can be detached for maintenance.

Description

technical field [0001] The invention relates to a membrane bioreactor, in particular to an enhanced separation column-shaped integrated membrane bioreactor based on gravity. Background technique [0002] The integrated membrane bioreactor integrates membrane separation technology and biodegradation technology, which not only saves the construction of secondary sedimentation tanks, but also greatly improves the efficiency of solid-liquid separation, and based on membrane separation, the concentration of activated sludge in the reactor Increase, as well as the emergence of special bacteria (especially the dominant flora), increased the rate of degradation of biochemical reactions. [0003] From the perspective of technical principles, in membrane bioreactors, due to the separation of membranes, soluble macromolecular compounds with a long degradation time must be intercepted and returned to the bioreactor for further degradation, that is, the corresponding hydraulic retention ...

Claims

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Application Information

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IPC IPC(8): C02F3/30C02F3/12
CPCC02F3/30C02F3/1268Y02W10/10
Inventor 朱文芳王小华
Owner ZHEJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY
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