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Enhanced phosphorus removal membrane bioreactor

A biological reaction device, phosphorus membrane technology, applied in chemical instruments and methods, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc. Improve the adsorption effect and prolong the cleaning cycle effect

Inactive Publication Date: 2012-05-23
TIANJIN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Because the phosphorus removal mechanism is not very clear at present, some phenomena in the phosphorus removal process have not been fully explained, so there are still many deficiencies in the current MBR with phosphorus removal function

Method used

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  • Enhanced phosphorus removal membrane bioreactor
  • Enhanced phosphorus removal membrane bioreactor
  • Enhanced phosphorus removal membrane bioreactor

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Embodiment Construction

[0024] The present invention will be further described below in conjunction with the accompanying drawings.

[0025] A kind of enhanced dephosphorization membrane bioreactor (see figure 1 and figure 2), including the reaction pool 5, the first diversion wall 1, the second diversion wall 2, the third diversion wall 3, the interlayer type diversion wall 4 and the fifth diversion wall 19 are arranged in the reaction pool 5 successively. The bottom of a diversion wall 1, the bottom of the third diversion wall 3 and the bottom of the sandwich type diversion wall 4 are respectively connected to the bottom wall of the reaction tank 5, and the first diversion wall 1 and the left side wall of the reaction tank 5 There is an aerobic zone 12 between them, an anaerobic zone 15 between the first diversion wall 1 and the interlayer diversion wall 4, and a first membrane filtration region 16 between the sandwich diversion wall 4 and the fifth diversion wall 19. , the top of the first dive...

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Abstract

The invention discloses an enhanced phosphorus removal membrane bioreactor which comprises a reaction tank, a first guide wall, a second guide wall, a third guide wall, a sandwich type guide wall and a fifth guide wall; a blender is arranged in a facultative zone; the lower part of the inside of the sandwich layer guide wall is provided with a connecting device composed of a groove and a bulge; one end of the groove is communicated with a membrane filtration zone; the inside of the bulge is provided with a channel used for connecting an anaerobic zone and the membrane filtration zone; a raw water pipeline and a coagulant-dosing pipeline are separately connected with a static mixer and then connected with the reaction tank; and a first aerator is arranged below a first membrane component. The bioreactor disclosed by the invention adopts coagulant pre-dosing, thus the formation of sludge floc can be enhanced, the adsorption and capturing functions of sludge floc to the phosphorus in water can be enhanced, and the effect of removing phosphorus can be realized; after coagulant is dosed, the formed flocculent sludge is favorable for delaying membrane pollution and prolonging the cleaning period of the membrane; and the dissolved oxygen in the sludge can be consumed step by step, and the problem that the phosphorus release in the anaerobic zone is affected owning to the rich oxygen in the return sludge of the membrane filtration zone can be effectively avoided.

Description

technical field [0001] The invention relates to a wastewater treatment device, in particular to a membrane bioreactor. Background technique [0002] Membrane bioreactor (MBR) is a new process for wastewater treatment that combines membrane separation technology with microbiology and biochemistry. It is mainly composed of three parts: "membrane module, bioreactor and material delivery". Compared with the traditional biochemical sewage treatment technology, it has good solid-liquid separation effect, high biochemical efficiency, excellent effluent quality, centralized equipment, small footprint, high sludge concentration, low sludge load, easy management and automatic control, etc. Advantages, it basically solves the problem that the effluent water quality cannot meet the requirements of reclaimed water reuse caused by factors such as sludge bulking and low sludge concentration in the traditional activated sludge process, and has broad applications in reclaimed water reuse and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14
Inventor 王捷
Owner TIANJIN POLYTECHNIC UNIV
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