Flocculant screening equipment and screening method

A technology for screening equipment and flocculants, applied in chemical instruments and methods, multi-stage water/sewage treatment, water/sludge/sewage treatment, etc., can solve the risk of stable operation of sewage treatment plants and increase the operating pressure of subsequent treatment units and other issues, to achieve the effect of reducing potential adverse effects, reasonable design, accurate and comprehensive comprehensive evaluation

Pending Publication Date: 2022-07-29
北控水务(中国)投资有限公司 +1
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0002] The activated sludge method is the mainstream biochemical treatment process adopted by sewage treatment plants today. The performance of sludge directly affects the effect of biochemical processes. The decline in sludge settling performance will increase the operating pressure of subsequent treatment units and affect the stable operation of sewage treatment plants. bring risk
[0003] Flocculants can effectively increase the sludge settling speed and become one of the effective means to deal with problems such as sludge bulking. However, there are various causes of sludge bulking, and a single flocculant cannot solve all problems. It is necessary to choose a more effective solution for different application scenarios. Applicable drugs

Method used

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  • Flocculant screening equipment and screening method
  • Flocculant screening equipment and screening method
  • Flocculant screening equipment and screening method

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Effect test

Embodiment 1

[0061] Please refer to figure 1 , figure 1 It is a schematic structural diagram of a flocculant screening device 10 provided in an embodiment of the present invention. from figure 1 A flocculant screening device 10 can be seen in the figure, which includes a biochemical treatment component 11, a secondary sedimentation tank unit 400, a dosing unit 500, and an aerator.

[0062] The biochemical treatment assembly 11 includes at least one reactor, and the reactor is the anaerobic unit 100, the anoxic unit 200 or the aerobic unit 300; when the biochemical treatment assembly 11 includes multiple reactors, the multiple reactors are connected in series;

[0063] The outlet of the biochemical treatment assembly 11 is connected to the inlet of the secondary sedimentation tank unit 400, and the sludge discharge port of the secondary sedimentation tank unit 400 is optionally connected to the inlet of the biochemical treatment assembly 11;

[0064] The aerator is connected to the aerob...

Embodiment 2

[0092] Please refer to image 3 and Figure 4 , another object of the present invention includes providing a screening method including the above, which can form the phenomenon of sludge bulking caused by different incentives through the regulation of different key parameters, which can be used to evaluate and analyze the use effect of flocculants, and can scientifically and effectively The flocculant is screened to give full play to the role of the flocculant and reduce the cost of use.

[0093] A screening method, the screening method is based on the flocculant screening device 10 of any one of the above embodiments, and the method comprises the following steps:

[0094] S100: Sludge biochemical system construction: The equipment used to screen flocculants and optimize the dosing method is a spliced ​​reactor based on the activated sludge treatment process, with organic load, nutrient ratio, aeration intensity, and pH as the main control parameters , simulating the actual ...

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Abstract

The invention relates to the technical field of sewage treatment, in particular to flocculant screening equipment and a flocculant screening method. The flocculating agent screening equipment comprises a biochemical treatment assembly, a secondary sedimentation tank unit, a dosing unit and an aerator, the biochemical treatment assembly comprises at least one reactor, and the reactor is an anaerobic unit, an anoxic unit or an aerobic unit; when the biochemical treatment assembly comprises a plurality of reactors, the plurality of reactors are connected in series; an outlet of the biochemical treatment assembly is connected with an inlet of the secondary sedimentation tank unit, and a sludge discharge port of the secondary sedimentation tank unit is selectively connected with an inlet of the biochemical treatment assembly; the aerator is connected with the aerobic unit; and the dosing unit is connected with the reactor at the outlet end of the biochemical treatment assembly. Therefore, different operation modes and conditions of sewage treatment by an activated sludge process can be simulated, the flocculant is screened in a targeted manner, the use method is optimized, the water quality deterioration phenomenon possibly caused by sludge bulking is effectively relieved, and the regulation and control cost is reduced.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a flocculant screening device and a screening method. Background technique [0002] Activated sludge method is the mainstream biochemical treatment process adopted by sewage treatment plants. The performance of sludge directly affects the effect of biochemical process. The decline of sludge settling performance will increase the operating pressure of subsequent treatment units, which will affect the stable operation of sewage treatment plants. bring risk. [0003] Flocculants can effectively improve sludge settling speed and become one of the effective means to deal with problems such as sludge bulking. However, the causes of sludge bulking are various, and a single flocculant cannot solve all problems. Applicable medicines. [0004] At the same time, the use of flocculants not only increases the cost of sewage treatment, but also may have a potential impact on sludge ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14
CPCC02F3/1215C02F3/308C02F1/52C02F2203/006C02F2301/046C02F2209/08C02F2209/16C02F2209/22C02F2209/06C02F2303/14
Inventor 刘永杰高放李凌云薛晓飞
Owner 北控水务(中国)投资有限公司
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