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Method and device for regulating and controlling sludge load to cope with instantaneous organic matter impact and application

A technology of sludge load and organic matter, applied in the direction of water pollutants, chemical instruments and methods, water/sludge/sewage treatment, etc., can solve problems such as rising and biochemical pools cannot run stably, and achieve obvious reduction and pollutants Removes effects that are stable and highly usable

Pending Publication Date: 2022-04-01
CHANGCHUN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention is applicable to the problem that the biochemical pool cannot run stably due to the sudden increase of the instantaneous organic load of the influent organic matter in the sewage treatment plant

Method used

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  • Method and device for regulating and controlling sludge load to cope with instantaneous organic matter impact and application
  • Method and device for regulating and controlling sludge load to cope with instantaneous organic matter impact and application
  • Method and device for regulating and controlling sludge load to cope with instantaneous organic matter impact and application

Examples

Experimental program
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Effect test

Embodiment 1

[0077] This embodiment is a simulation run of the laboratory 2 The O reactor is used for transient organic matter shock research. The operating environment of the reactor includes: water temperature 20-22 ° C, the volume ratio of the anaerobic, anoxic and aerobic sections of the reactor is 1:1:2, the raw water enters from the anaerobic section, and the hydraulic The residence time is 20h, the average sludge concentration is 3500mg / L, the reflux ratio in the nitrifying liquid is 200%, and the sludge reflux ratio is 100%. The instantaneous organic matter impact concentration is about 800 mg / L, and the instantaneous impact time is 2 hours. After the impact, the COD of the effluent rises sharply, and the intermittent return operation of the sludge tank is regulated. The specific measures are as follows:

[0078] The sludge in the sludge thickening tank 14 is backflowed, the first valve 4 is opened, and the sludge lifting pump 1 is started to drive the sludge in the sludge thickeni...

Embodiment 2

[0081] This embodiment is a simulation run of the laboratory 2 The O reactor is used for transient organic matter shock research. The operating environment of the reactor includes: water temperature 20-22 ° C, the volume ratio of the anaerobic, anoxic and aerobic sections of the reactor is 1:1:2, the raw water enters from the anaerobic section, and the hydraulic The residence time is 20h, the average sludge concentration is 3500mg / L, the reflux ratio in the nitrifying liquid is 200%, and the sludge reflux ratio is 100%. The instantaneous organic matter impact concentration is about 1200 mg / L, and the instantaneous impact time is 2 hours. After the impact, the COD of the effluent rises sharply. The intermittent return operation of the sludge tank is regulated. The specific measures are as follows:

[0082] The sludge in the sludge thickening tank 14 is backflowed, the first valve 4 is opened, and the sludge lifting pump 1 is started to drive the sludge in the sludge thickening ...

Embodiment 3

[0085] This embodiment is a simulation run of the laboratory 2 The O reactor is used for transient organic matter shock research. The operating environment of the reactor includes: water temperature 20-22 ° C, the volume ratio of the anaerobic, anoxic and aerobic sections of the reactor is 1:1:2, the raw water enters from the anaerobic section, and the hydraulic The residence time is 20h, the average sludge concentration is 3500mg / L, the reflux ratio in the nitrifying liquid is 200%, and the sludge reflux ratio is 100%. The instantaneous organic matter impact concentration is about 1600 mg / L, and the instantaneous impact time is 2 hours. After the impact, the COD of the effluent rises sharply, and the intermittent return operation of the sludge tank is regulated. The specific measures are as follows: the sludge in the sludge concentration tank 14 returns the sludge, and the first valve is opened. 4. Start the sludge lifting pump 1 to pump the sludge in the sludge thickening ta...

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Abstract

The invention belongs to the technical field of urban sewage treatment, and discloses a method and device for regulating and controlling sludge load to cope with instantaneous organic matter impact and application. The method for regulating and controlling sludge load to cope with instantaneous organic matter impact comprises the steps that sludge in a concentration tank flows back, and sludge in the concentration tank is pumped into a secondary sedimentation tank backflow pipeline through a sludge lifting pump; returning sludge into a reactor anaerobic tank along with the secondary sedimentation tank; internal reflux is regulated and controlled, the reflux quantity is increased to adsorb high-load organic matters in the reactor, the organic matters are removed, and stable operation of the biochemical pool is kept; regulating and controlling the aeration rate, regulating the aeration rate through a flow meter, controlling the dissolved oxygen concentration of the aerobic tank, and keeping the normal physiological activity of microorganisms in the aerobic tank; and continuously regulating and controlling to recover a normal operation mode. According to the invention, the high-concentration sludge in the sludge concentration tank flows back to the anaerobic tank to adsorb the influent organic matters for the first time, and meanwhile, the operation parameters are regulated and controlled, so that the instantaneous impact of the influent organic matters is quickly and effectively coped with.

Description

technical field [0001] The invention belongs to the technical field of urban sewage treatment, and in particular relates to a method, device and application for adjusting and controlling sludge load to cope with instantaneous organic matter impact. Background technique [0002] At present, urban sewage treatment plants are the main receiving objects of sewage treatment, and their safe and stable operation is of great significance for improving the water environment of river sections, ensuring the safety of drinking water quality, and saving and utilizing water resources. Sewage treatment plants often have influent water quality exceeding the design standard, especially the concentration of organic matter, which has a bad impact on the normal operation and effluent of the sewage treatment plant. Once the sewage treatment plant cannot operate normally and stably, it will inevitably lead to a decline in sewage treatment efficiency. The concentration of pollutants in the effluen...

Claims

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Application Information

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IPC IPC(8): C02F3/30C02F101/30
Inventor 边德军蒋维卿康华王帆艾胜书曲红
Owner CHANGCHUN INST OF TECH