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Sludge curing agent, preparation method and use method thereof

A sludge curing agent and sludge technology, applied in chemical instruments and methods, sludge treatment, fixed/solidified sludge treatment, etc., can solve the problems of large amount of sludge curing agent, low curing efficiency, high leaching rate, etc. , to achieve the effect of short curing time, solving the problem of large and small dosage

Inactive Publication Date: 2020-09-15
上海助瀛环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The main purpose of this application is to provide a sludge curing agent with low cost, less dosage, short curing time, environmental friendliness, no secondary pollution, and easy sludge treatment after curing, so as to solve the problems in the prior art. The technical problems of large amount of sludge solidification agent, low solidification efficiency, high leaching rate after solidification, and environmental pollution

Method used

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  • Sludge curing agent, preparation method and use method thereof
  • Sludge curing agent, preparation method and use method thereof

Examples

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Embodiment 1

[0021] A sludge solidifying agent, which is dolomite powder obtained by calcining and pulverizing dolomite.

[0022] The preparation method of this sludge curing agent comprises the following steps:

[0023] Calcination: Calcining dolomite at 600°C for 8 hours;

[0024] Grinding: Grinding the calcined dolomite to obtain a sludge solidifying agent.

Embodiment 2

[0026] A sludge solidifying agent, which is dolomite powder obtained by calcining and pulverizing dolomite.

[0027] The preparation method of this sludge curing agent comprises the following steps:

[0028] Calcination: Calcining dolomite at 1200°C for 3 hours;

[0029] Grinding: Grinding the calcined dolomite to obtain dolomite powder;

[0030] Sieving: pass the dolomite powder obtained after grinding through a 20-mesh sieve to obtain a sludge solidifying agent.

Embodiment 3

[0032] A sludge solidifying agent, which is dolomite powder obtained by calcining and pulverizing dolomite.

[0033] The preparation method of this sludge curing agent comprises the following steps:

[0034] Calcination: Calcining dolomite at 1000°C for 7 hours;

[0035] Grinding: Grinding the calcined dolomite to obtain dolomite powder;

[0036] Sieving: pass the dolomite powder obtained after grinding through a 120-mesh sieve to obtain a sludge solidifying agent.

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Abstract

The invention discloses a sludge curing agent, a preparation method and a use method thereof, wherein the raw materials of the sludge curing agent comprise dolomite powder, and the dolomite powder isobtained by calcining dolomite and grinding into powder. The invention also provides a preparation method of the sludge curing agent, wherein the preparation method comprises the following steps: calcining: calcining dolomite; and grinding: grinding the calcined dolomite to obtain the sludge curing agent. The invention further provides a use method of the sludge curing agent, wherein the sludge curing agent accounting for 5%-10% of the total amount of sludge is added into the sludge, and curing is performed after uniform stirring, so that the sludge meets the landfill requirement. The technical problems that in the prior art, a sludge curing agent is large in feeding amount, low in curing efficiency and high in leaching rate after curing, and environmental pollution is caused are solved.

Description

technical field [0001] The present application relates to the technical field of sludge treatment, in particular, to a sludge solidifying agent and its preparation method and use method. Background technique [0002] Sludge treatment is the process of sludge reduction, stabilization and harmless treatment. The higher the degree of wastewater treatment, the more sludge residues are generated that need to be disposed of. For modern sewage treatment plants, the treatment and disposal of sludge has become the most complex and expensive part of the operation of the sewage treatment system. [0003] The sludge solidification technology is a method to modify the dewatered sludge of the sewage plant by adding special solidification materials to stabilize the physical and chemical properties of the sludge. Solidification refers to the process of changing the physical properties of sludge by increasing its strength and reducing its water permeability. Sludge solidification agent is...

Claims

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Application Information

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IPC IPC(8): C02F11/143C02F11/145
CPCC02F11/14C02F11/008
Inventor 丁亮吴晓伟张弦
Owner 上海助瀛环保科技有限公司