Composite conditioner for sludge dewatering and using method thereof

A sludge dehydration and conditioner technology, which is applied in water/sludge/sewage treatment, dehydration/drying/thickened sludge treatment, chemical instruments and methods, etc., can solve problems such as poor degradation performance and floc collapse, and achieve Low moisture content, increased calorific value, and convenient use

Active Publication Date: 2016-05-04
ZHEJIANG ZHENGJIE ENVIRONMENTAL SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] At present, polymer conditioners are widely used in practical engineering, especially polyacrylamide flocculants, which have the advantages of good effect and will not increase the amount of mud cake, but their degradation performance is poor, and its monomer acrylamide is A moderately neurotoxic substance; in addition, the sludge conditioned by polyacrylamide flocculants will produce a porous mud cake structure. If the mud cake formed during the filtration process has high compressibility, then with the mud cake The flocs will collapse under the action of pressure; therefore, the research and development of new efficient, safe and economical compound conditioners is still a hot spot in current research

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Take 15kg of polyaluminum chloride, 30kg of ferric chloride, 20kg of surfactant and 30kg of ferrous sulfate, and mix them well to form Agent A; take 30kg of bark and peanut shells that have passed through an 80-mesh sieve, 30kg of fly ash and Chitosan 10kg, make B agent after fully mixing.

Embodiment 2

[0031] Take 17kg of polyaluminium chloride, 33kg of ferric chloride, 22kg of surfactant and 28kg of ferrous sulfate, and mix them well to form Agent A; take 27.5kg of bark and peanut shells that have passed through a 80-100 mesh sieve, and 27.5kg of pulverized coal. Ash 37kg and chitosan 8kg are fully mixed to make B agent.

Embodiment 3

[0033] Take 10kg of polyaluminum chloride, 20kg of ferric chloride, 10kg of surfactant and 20kg of ferrous sulfate, and mix them well to form Agent A; take 7.5kg of bark and 22.5kg of peanut shells passed through a 100-mesh sieve. kg, 20kg of fly ash and 1kg of chitosan, mixed thoroughly to make agent B.

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Abstract

The invention relates to a composite conditioner for sludge dewatering and a using method thereof, and belongs to the field of sludge treatment in environmental protection. The composite conditioner is composed of an agent A and an agent B, wherein according to the agent B, biomass raw materials replace polyacrylamide raw materials in the prior art, the defects that a conditioner composed of polyacrylamide raw materials is poor in degradation performance, toxic and instable in flocculent body structure are overcome, and the composite conditioner is efficient, harmless and stable.

Description

technical field [0001] The invention relates to a composite conditioner for sludge dehydration and a method for using the same, belonging to the field of sludge treatment in environmental protection. Background technique [0002] Sludge is an inevitable product of sewage treatment. It is a very complex heterogeneous body composed of organic debris, bacterial cells, inorganic particles and colloids; with the acceleration of my country's urbanization process and the improvement of people's living standards , the discharge of urban industrial wastewater and domestic sewage is increasing, and the output of sludge is also greatly increasing. [0003] The main feature of sludge is that the water content is as high as 95%, and the water content of the sludge after mechanical dehydration is still as high as 80%, which brings difficulties to the storage, transportation, treatment and utilization of sludge. [0004] In addition, the composition of sludge is complex, including refracto...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/14
CPCC02F11/14C02F2303/06
Inventor 任松洁周立新徐贝林伟青
Owner ZHEJIANG ZHENGJIE ENVIRONMENTAL SCI & TECH CO LTD
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