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Movable membrane bioreactor and sewage treatment system and method

A technology of membrane bioreactor and sewage treatment system, applied in biological water/sewage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc. Together, reduce membrane fouling and other issues, to achieve the effect of slowing down membrane fouling, improving efficiency, and convenient installation

Pending Publication Date: 2022-07-19
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the membrane bioreactors or membrane modules provided by the above prior art can reduce membrane fouling to a certain extent, there is still room for further reducing membrane fouling, and each has its own advantages and disadvantages, such as the stretched membrane module membrane The wires are easy to get entangled, the dynamic membrane module is more complicated, and the installation is more troublesome

Method used

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  • Movable membrane bioreactor and sewage treatment system and method
  • Movable membrane bioreactor and sewage treatment system and method
  • Movable membrane bioreactor and sewage treatment system and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0090] This embodiment provides a dynamic membrane bioreactor, the schematic diagram of which is as follows: figure 1 shown, from figure 1 It can be seen that the dynamic membrane bioreactor includes:

[0091] The upper end cap 17, the lower end cap 18, the hollow shaft 13 and several hollow fiber membrane filaments 15. The upper end cap 17 and the lower end cap 18 are of the same size as a circular box-type structure, and the upper end cap 17 and the lower end cap 18 are arranged between There are several support frames 20 for supporting and fixing the upper end cover 17 and the lower end cover 18; the bottom surface of the lower end cover 18 is provided with a water outlet;

[0092] The hollow shaft 13 is arranged between the upper end cover 17 and the lower end cover 18, and makes the upper end cover 17 and the lower end cover 18 communicate with each other at the center thereof;

[0093] A plurality of the hollow fiber membrane filaments 15 are vertically arranged betwee...

Embodiment 2

[0105] This embodiment provides a sewage treatment system, the schematic diagram of which is as follows: figure 2 shown, from figure 2 It can be seen that the sewage treatment system includes a sewage treatment tank 3, a set of dynamic membrane bioreactors 5 provided in Example 1, a motor 4, an aeration pump 7 and a finished water tank 11. The sewage treatment tank 3 Activated sludge is contained in the middle, the movable membrane bioreactor 5 is arranged below the sewage level of the sewage treatment tank 3, and the upper end cover 17 of the movable membrane bioreactor 5 is electrically connected with the rotating shaft of the motor 4 , the surrounding, the bottom and the idle shaft 13 of the movable membrane bioreactor 5 are provided with aeration pipes 12;

[0106] The dynamic membrane bioreactor 5 and the aeration pipe 12 are arranged in the plastic mesh 21, and the aeration pipes 12 arranged around and at the bottom of the dynamic membrane bioreactor 5 and the dynamic...

Embodiment 3

[0117] This embodiment provides a sewage treatment method, wherein the sewage treatment method is realized by using the sewage treatment system provided in Embodiment 2, and the method includes the following specific steps:

[0118] (1) Sewage (COD is 300-500mg / L) enters the sewage treatment tank through the first flow meter through the water pump, and the activated sludge in the sewage treatment tank adsorbs and degrades the organic matter in the sewage;

[0119] (2) After the sewage treated by the activated sludge in step (1) enters the hollow fiber membranes of the moving membrane bioreactor, the moving membrane bioreactor is rotated, and the hollow fiber membranes are placed in the hollow fiber membranes. The water is subjected to solid-liquid separation, and product water is obtained after separation. The product water finally flows into the second water collecting pipe in the lower end cover, collects the product water through a suction pump, and sends it to the finished ...

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Abstract

The invention provides a movable membrane bioreactor and a sewage treatment system and method.The movable membrane bioreactor comprises an upper end cover, a lower end cover, a hollow rotating shaft and a plurality of hollow fiber membrane filaments, the upper end cover and the lower end cover are each of a box type structure, and a plurality of supporting frames are arranged between the upper end cover and the lower end cover; the upper end cover and the lower end cover are supported and fixed; a water outlet is formed in the bottom surface of the lower end cover; the hollow rotating shaft is arranged between the upper end cover and the lower end cover, and the centers of the upper end cover and the lower end cover are communicated; the plurality of hollow fiber membrane filaments are vertically arranged between the upper end cover and the lower end cover and are communicated with the upper end cover and the lower end cover; and the movable membrane bioreactor can rotate along with the hollow rotating shaft. The hollow fiber membrane filaments of the movable membrane bioreactor provided by the invention can rotate along with the movable membrane bioreactor, so that the membrane pollution can be effectively alleviated, and the sewage treatment efficiency is improved.

Description

technical field [0001] The invention relates to a dynamic membrane biological reactor, a sewage treatment system and a method, and belongs to the technical field of sewage treatment. Background technique [0002] Membrane bioreactor (MBR) is a new technology that combines biological treatment technology with membrane separation. It replaces traditional secondary sedimentation tank with membrane modules with high separation efficiency. Compared with traditional biological treatment technology, membrane biological reaction The device has the advantages of impact resistance, good water quality treatment, and easy automatic control. Membrane bioreactor is mainly composed of two parts: bioreactor and membrane separator (membrane module). Bioreactors are the main degradation sites for pollutants in wastewater. The membrane separator mainly plays the role of solid-liquid separation. But at the same time, MBR membrane is easy to be polluted, resulting in high maintenance cost, wh...

Claims

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Application Information

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IPC IPC(8): C02F3/12C02F101/30
CPCC02F3/1268C02F2101/30Y02W10/10
Inventor 黄刚华江晶晶黄丽华陈文唐永帆田源毛汀袁曦余华利王月李卓柯
Owner PETROCHINA CO LTD
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