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Environment-friendly sludge dehydration conditioner and application method thereof

A sludge dehydration and conditioning agent technology, which is applied in the direction of water/sludge/sewage treatment, sludge treatment, chemical instruments and methods, etc., can solve problems such as inability to utilize resources, improve the efficiency of subsequent resource utilization, reduce Incremental issues, the effect of increasing the scope of application

Inactive Publication Date: 2019-10-25
北京中持净水材料技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The raw materials involved in this invention also include quicklime, which cannot be used as a resource in the future, and also has environmental protection problems

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Mix 30 parts of fly ash, 20 parts of waste wood chips, 10 parts of diatomaceous earth, 10 parts of magnesium oxide and 10 parts of bauxite to make sludge conditioner A. Add PAM solution to the sludge with a moisture content of 99.2%, the addition amount is 1 mg / g DS relative to the absolute dry sludge, after the stock transfer treatment, add conditioner A therein, the addition amount is 0.05 g / g DS (relative to dry sludge), after stirring for 15 minutes, put the sludge into a high-pressure diaphragm filter press for dehydration, and the moisture content of the dehydrated sludge reaches 55.8%.

Embodiment 2

[0024] Fully mix 40 parts of fly ash, 10 parts of waste wood chips, 5 parts of diatomaceous earth, 5 parts of magnesium oxide and 20 parts of bauxite to prepare sludge conditioner A. Add PAM emulsion to the sludge with a water content of 98.1%, the addition amount is 3mg / g DS (relative to absolute dry sludge), after being treated by ordinary belt machine, add conditioner A to it, the addition amount is 0.1g / g gDS (compared to absolute dry sludge), after mixing evenly, the sludge is sent to a high-pressure belt machine for dehydration, and the moisture content of the dehydrated sludge reaches 57.3%.

Embodiment 3

[0026] Fully mix 40 parts of fly ash, 20 parts of waste wood chips, 5 parts of diatomaceous earth, 5 parts of magnesium oxide and 20 parts of bauxite to prepare sludge conditioner A. Add chitosan solution to the sludge with a water content of 97.6%, the addition amount is 2mg / gDS (relative to the absolute dry sludge), after being treated by the screw stacker, add conditioner A to it, the addition amount is 0.08g / gDS (relative to absolute dry sludge), after mixing evenly, the sludge is sent to a high-pressure belt machine for dehydration, and the moisture content of the dehydrated sludge reaches 52.7%.

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Abstract

The invention relates to an environment-friendly sludge dehydration conditioner and application thereof. The sludge dehydration conditioner is composed of a conditioner A and a conditioner B. The conditioner A is prepared from the materials: 30-40 parts of pulverized fuel ash, 10-20 parts of an abandoned wood scrap, 5-10 parts of kieselguhr, 5-10 parts of magnesium oxide and 10-20 parts of bauxite, the conditioner A is obtained by mixing uniformly and stirring for 10-15 minutes, and the additive amount of the conditioner A is 0.05-0.1g / gDS; and the conditioner B is any one of a positive ion PAM solution, a positive ion PAM emulsion, a polysaccharide organic polymer solution and the like, and the effective content additive amount is 1-3mg / gDS. Sludge processed by the conditioner is subjected to mechanical dehydration, finally the sludge moisture content is reduced below 60%, the problem of increment of the sludge after dehydration can be effectively solved, meanwhile, lime is not used,and the subsequent recycling using efficiency of the sludge is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of sludge treatment, and in particular relates to an environment-friendly sludge dehydration conditioner and an application method thereof. Background technique [0002] With the enhancement of national environmental protection awareness, sewage treatment must break the situation of "heavy water and light mud", and at the same time turn waste into treasure to realize the resource utilization of sludge. The sludge treatment must be "reduced, stabilized and harmless and resources", and meet the overall requirements of "green, circular, low-carbon". [0003] At present, most of the sludge dewatering plants in my country still use polyacrylamide to simply flocculate the sludge to a moisture content of about 80%. For some deep dewatered sludge, the method of iron salt + lime is still used, not only Large dosage, high treatment cost, and large amount of sludge after treatment. At the same time, due to the large am...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/143C02F11/147C02F11/125C02F11/123
CPCC02F11/123C02F11/125C02F11/143C02F11/147
Inventor 赵世图孙庆峰康勇锋
Owner 北京中持净水材料技术有限公司
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