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Flocculating agent for sludge dewatering and preparation method thereof

A sludge dehydration and flocculation technology, which is applied in water/sludge/sewage treatment, sludge treatment, chemical instruments and methods, etc., can solve the problems of high chemical consumption of sludge dehydration flocculant, high cost of sludge dehydration, sewage discharge, etc. Unsatisfactory sludge effect and other problems, to achieve the effect of improving sludge dewatering performance, reducing the moisture content of mud cake, and increasing the amount of sludge produced

Inactive Publication Date: 2019-01-18
光大水务(章丘)运营有限公司
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  • Summary
  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the above-mentioned deficiencies of the prior art, to provide a flocculation agent for sludge dehydration and its preparation method, aiming to solve the problem of unsatisfactory sludge discharge effect in existing sewage and high chemical consumption of sludge dehydration flocculants. Technical problem of high cost of sludge dewatering

Method used

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  • Flocculating agent for sludge dewatering and preparation method thereof
  • Flocculating agent for sludge dewatering and preparation method thereof
  • Flocculating agent for sludge dewatering and preparation method thereof

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preparation example Construction

[0025] On the other hand, the embodiment of the present invention also provides a preparation method of the above-mentioned flocculation agent, comprising the following steps:

[0026] S01: preparing clarified lime water, weighing dry powder type polyacrylamide, emulsion type polyacrylamide and solvent;

[0027] S02: dissolving the above-mentioned dry powder polyacrylamide and emulsion polyacrylamide in a solvent to obtain a first mixed solution;

[0028] S03: adding clarified lime water to the above first mixed solution to obtain the flocculation agent.

[0029] The preparation method of the flocculation agent for sludge dewatering in the embodiment of the present invention has simple process, easy control of conditions, and low preparation cost. The water content of the cake is reduced, and the chemical consumption per ton of dry mud is reduced, and the effect is significantly better than that of the prior art.

[0030] Further, in the above step S01, the preparation proce...

Embodiment 1

[0034] A flocculation agent for sludge dewatering, based on the total mass of the flocculation agent as 100%, the flocculation agent includes the following components in mass percentage:

[0035]

[0036] The preparation method of above-mentioned flocculating agent is:

[0037] S11: preparing clarified lime water, weighing dry powder type polyacrylamide, emulsion type polyacrylamide and water.

[0038] S12: dissolving the above-mentioned dry powder polyacrylamide and emulsion polyacrylamide in water through an automatic dispensing system to obtain a first mixed solution.

[0039] S13: adding clarified lime water to the above-mentioned first mixed liquid to obtain a flocculating agent.

Embodiment 2

[0041] A flocculation agent for sludge dewatering, based on the total mass of the flocculation agent as 100%, the flocculation agent includes the following components in mass percentage:

[0042]

[0043]

[0044] The preparation method of above-mentioned flocculating agent is:

[0045] S21: preparing clarified lime water, weighing dry powder polyacrylamide, emulsion polyacrylamide and water.

[0046] S22: dissolving the above-mentioned dry powder polyacrylamide and emulsion polyacrylamide in water through an automatic dispensing system to obtain a first mixed liquid.

[0047] S23: adding clarified lime water to the first mixed solution to obtain a flocculating agent.

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Abstract

The invention belongs to the technical field of sludge dewatering, and particularly relates to a flocculating agent for sludge dewatering and a preparation method thereof. The flocculating agent is prepared from the following components in percentage by mass: 0.1%-0.3% dry powder type polyacrylamide, 0.1%-0.3% of emulsion type polyacrylamide, 1%-3% of clarified limewater and 96 .4%-98.8% of a solvent. The preparation method comprises the following steps: preparing the clarified limewater, weighing dry powder type polyacrylamide, emulsion type polyacrylamide and the solvent; dissolving dry powder type polyacrylamide and emulsion type polyacrylamide in the solvent to obtain a first mixed solution; adding the clarified limewater to the first mixed solution to obtain the flocculating agent. Bysynergistic action of components and content of the flocculating agent, the sludge yield in the sewage treatment process is increased, the moisture content of sludge cakes is reduced, and the medicine consumption per ton of dry sludge is reduced, and the effect is obviously better than that in the prior art .

Description

technical field [0001] The invention belongs to the technical field of sludge dewatering, and in particular relates to a flocculation agent for sludge dewatering and a preparation method thereof. Background technique [0002] Flocculants are mainly used to improve the speed and efficiency of sedimentation, clarification, filtration, air flotation, centrifugal separation and other technological processes. The flocculation process is the process in which many individual particles in the suspension form aggregates (floc or alum). The most widely used flocculants in domestic water treatment are synthetic polyacrylamide series products. Polyacrylamide (PAM) is a water-soluble polymer, insoluble in most organic solvents, and has good flocculation properties. Can reduce the frictional resistance between liquids. [0003] The sources of sewage in sewage treatment plants are mainly domestic sewage and industrial wastewater, and the sludge composition is extremely complex. At presen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/148
CPCC02F11/14
Inventor 许正宏罗智宇李峰刘金铭
Owner 光大水务(章丘)运营有限公司
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