Control device and control method for automatic feeding reaction of reagent for sludge dewatering

A sludge dehydration and control device technology, applied in the direction of dehydration/drying/concentrated sludge treatment, etc., can solve the problems of inaccurate control of the reaction process, insufficient flocculant dosage, unstable operation of the filter press, etc., to avoid The dosage is not suitable, the effect of preventing destabilization and coagulation is poor, and the effect of timely dosage control

Inactive Publication Date: 2019-01-01
北京环球中科水务科技股份有限公司 +1
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Problems solved by technology

[0004] In view of this, the present invention proposes an automatic dosing reaction control device and control method for sludge dewatering with automatic dosing of flocculant, which solves the inaccurate control of the reaction process and insufficient flocculant dosage in the prior art Or excessive, resulting in the waste of flocculant and the technical problems of unstable operation of the follow-up filter press

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  • Control device and control method for automatic feeding reaction of reagent for sludge dewatering
  • Control device and control method for automatic feeding reaction of reagent for sludge dewatering

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[0023] Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention is not limited to these embodiments. The present invention covers any alternatives, modifications, equivalent methods and schemes made within the spirit and scope of the present invention.

[0024] In order to provide the public with a thorough understanding of the present invention, specific details are set forth in the following preferred embodiments of the present invention, but those skilled in the art can fully understand the present invention without the description of these details.

[0025] In the following paragraphs the invention is described more specifically by way of example with reference to the accompanying drawings. It should be noted that all the drawings are in simplified form and use inaccurate scales, which are only used to facilitate and clearly assist the purpose of illustrating the embodiments of t...

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Abstract

The invention discloses a control device and a control method for automatic feeding reaction of an reagent for sludge dewatering. The control method comprises the following steps of collecting the pH(potential of hydrogen) value of sludge, flow rate of sludge, concentration of sludge, concentration of flocculant, and actual feeding amount of flocculant in real time; calculating the theoretical feeding amount of flocculation according to the pH value of sludge, flow rate of sludge, concentration of sludge and concentration of flocculant; controlling the rotation speed of a flocculant feeding pump according to the actual feeding amount and theoretical feeding amount of flocculant, so as to enable the actual feeding amount of the flocculant to be greater than the theoretical feeding amount,thereby realizing the accurate, timely and closed-loop feeding control on the flocculant. The control method has the advantages that the problem of improper feeding amount or untimely feeding due to artificial feeding of flocculant is solved; the problems of poor sludge charge effect of a press filter, poor sludge dewatering property and the like due to poor destabilization and coagulation effectsof sludge colloid particles caused by overlow feeding amount of flocculant are solved; the problem of waste due to overhigh feeding amount of flocculant is also solved.

Description

technical field [0001] The invention relates to the field of sewage sludge treatment, and more specifically relates to a control device and a control method for automatic chemical dosing reaction for sludge dehydration. Background technique [0002] With the continuous improvement of my country's urbanization level, the construction of sewage treatment facilities has developed rapidly. In the process of urban sewage treatment, the sewage can be discharged up to the standard after a series of treatments, and a large number of pollutants are enriched, concentrated and transferred to the sludge. Usually, the moisture content of sludge exceeds 90%. Due to the special morphological structure and high hydrophilicity of sludge, it contains a large amount of water and is difficult to remove, resulting in a huge volume of sludge, which seriously affects its reduction, stabilization and Harmless and comprehensive utilization of resources. In order to facilitate the subsequent transp...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/14
CPCC02F11/14
Inventor 虞红波张伟军杨招艺杨鹏
Owner 北京环球中科水务科技股份有限公司
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