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Method and apparatus for promoting aerobic sludge flocculation and granulation

An aerobic sludge and granulation technology, which is applied in the field of environmental engineering, can solve the problems of loose sludge structure and poor settlement performance, and achieve the effects of solving sludge bulking, accelerating the formation of granular sludge, and increasing collision compression

Active Publication Date: 2016-02-03
CHINA UNIV OF MINING & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Both will loosen the sludge structure and deteriorate the settling performance

Method used

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  • Method and apparatus for promoting aerobic sludge flocculation and granulation
  • Method and apparatus for promoting aerobic sludge flocculation and granulation
  • Method and apparatus for promoting aerobic sludge flocculation and granulation

Examples

Experimental program
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Effect test

example 1

[0019] Example 1: if figure 1 and image 3 As shown, one side of SBR1 is provided with a partition wall 2 and a partition 3, the partition 3 is vertically fixed on the partition wall 2, and a cone group 4 is added between the partitions 3, and the cone group 4 is fixed by the cone group fixing frame 5 On the partition 3 , a pusher 6 is provided on one side of the partition wall 2 . The operation process is that in the stage of SBR1 aeration treatment of sewage, under the push of the propeller 6, the water flow passes through the partition 3, and a swirling flow is generated in the partition 3, driving the sludge to rotate in the cone group 4, and in the cone group 4 Rolling and compressing on the wall of group 4, at this time, through the swirl action and the increased hydraulic action of cone group 4, not only the probability of sludge collision is increased but also the effective collision is improved, and the extracellular polymers are strengthened in sludge coagulation, f...

example 2

[0021] Example 2: if figure 2 and image 3 As shown, different from Example 1, the top of the cone group 4 is provided with a stirring blade 8, the motor 12 is fixed by the motor bracket 13, and one end of the transmission shaft 11 is supported by the transmission shaft bracket 7, and the motor 12 drives the transmission shaft 11 to rotate, and the transmission shaft 11 The direction-changing gear set 10 drives the stirring shaft 9 to rotate, and the stirring shaft 9 drives the stirring blade 8 to rotate. The mechanical stirring can ensure sufficient swirl effect and controllability of the swirl effect.

example 3

[0022] Example 3: if Figure 4 As shown, the difference from Example 1 is that the invention is applied in a continuous flow aerobic tank 14 rather than intermittently operated SBR1, and the continuous entry of water at the water inlet 15 and the continuous outflow of the water outlet 16 make the pool Propeller 6 may not be provided to generate water flow moving in the horizontal direction.

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Abstract

The present invention discloses a method and apparatus for promoting aerobic sludge flocculation and granulation, and relates to the field of environment engineering. According to the method, one or multiple groups of cone groups are installed inside an aerobic biochemical pool, sludge moves in the cone group in a cyclone manner by arranging mechanical stirring and / or separation plate chamber so as to increase the contact collision between the sludge, rolling compression is performed on the cone surface, and effects of adhesion, hydrophobicity and bridging of extracellular polymers, polyvalent metal cations and polymer flocculants are combined so as to promote the sludge condensation, flocculation and granulation. The apparatus for achieving the method comprises a device for generating rotating flow and the cone group device, and further comprises an aging adding device. According to the present invention, with the generated rotating flow and the cone group, the collision compression of the sludge can be increase, and the effects of the extracellular polymers and the like in the sludge coagulation, flocculation and granulation can be strengthened; the sludge coagulation, flocculation and granulation can be continuously promoted, the sludge swelling can be solved, and the sludge particle formation can be accelerated; and the method and the apparatus are suitable for the intermittent operating and continuous operating aerobic biochemical pool.

Description

technical field [0001] The invention relates to the field of environmental engineering, in particular to a method and a device for promoting aerobic sludge flocculation and granulation. Background technique [0002] Aerobic sludge granulation is a treatment technology with great application prospects, but it is yet to be broken through in engineering applications. Aerobic granular sludge is formed by mutual aggregation of microorganisms. Compared with flocculent sludge, it has greater density, particle size and better settling performance, so it can maintain a high concentration of activated sludge, but aerobic sludge particles The speed of transformation is slow. In the activated sludge process with aeration tank, sludge bulking phenomenon is often encountered. Traditional sludge bulking can be divided into filamentous bulking and viscous bulking according to whether it is caused by filamentous bacteria. Both will loosen the sludge structure and deteriorate the settling ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/12C02F11/00
Inventor 湛含辉刘沙王良杰
Owner CHINA UNIV OF MINING & TECH
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