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Sludge dewatering flocculant and its dewatering method

A sludge dehydration and flocculant technology, applied in the direction of dehydration/drying/concentrated sludge treatment, etc., can solve the problems of unsatisfactory effect, achieve the effect of improving dehydration effect, reducing toxic and harmful substances, and enhancing flocculation performance

Active Publication Date: 2017-06-23
杜普利
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the reduction process, mechanical dehydration is generally used for dehydration, and a dehydration flocculant is added to improve the dehydration effect. At present, the main dehydration flocculants are mainly inorganic substances, such as quicklime, etc. The dehydration effect and the removal of heavy metals, organic matter, etc. The effect is not ideal

Method used

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  • Sludge dewatering flocculant and its dewatering method

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Experimental program
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Effect test

Embodiment 1

[0017] The sludge dewatering flocculant is composed of agent A and agent B; the agent A is made of the following raw materials in parts by weight: 28 parts of ferrous sulfate, 10 parts of heavy metal scavenger, 43 parts of blue carbon, 12 parts of lime powder, 12 parts of alkylamine polyoxyethylene ether phosphate, 9 parts of lignosulfonate;

[0018] The agent B is prepared from the following raw materials in parts by weight: 35 parts of betaine, 20 parts of tetraethylenepentamine, 9 parts of formaldehyde, 9 parts of ethanol and 55 parts of water.

[0019] The preparation method of the A agent comprises: grinding ferrous sulfate, semi-coke, and lime powder through a 500-mesh sieve, and then mixing and stirring evenly with the heavy metal scavenger, alkylamine polyoxyethylene ether phosphate, and lignosulfonate.

[0020] The preparation method of the B agent includes adding tetraethylenepentamine and ethanol into the reaction kettle and stirring until the tetraethylenepentamine...

Embodiment 2

[0026] The sludge dewatering flocculant is composed of agent A and agent B; the agent A is made of the following raw materials in parts by weight: 20 parts of ferrous sulfate, 6 parts of heavy metal scavenger, 42 parts of blue carbon, 15 parts of lime powder, 14 parts of alkylamine polyoxyethylene ether phosphate, 6 parts of lignosulfonate;

[0027] The B agent is made of the following raw materials in parts by weight: 37 parts of betaine, 15 parts of tetraethylenepentamine, 8 parts of formaldehyde, 15 parts of ethanol, and 45 parts of water.

[0028] The preparation method of the A agent comprises: grinding ferrous sulfate, semi-coke, and lime powder through a 500-mesh sieve, and then mixing and stirring evenly with the heavy metal scavenger, alkylamine polyoxyethylene ether phosphate, and lignosulfonate.

[0029] The preparation method of the B agent includes adding tetraethylenepentamine and ethanol into the reaction kettle and stirring until the tetraethylenepentamine is d...

Embodiment 3

[0035] The sludge dewatering flocculant is composed of agent A and agent B; the agent A is made of the following raw materials in parts by weight: 25 parts of ferrous sulfate, 8 parts of heavy metal scavenger, 45 parts of blue carbon, 17 parts of lime powder, 10 parts of alkylamine polyoxyethylene ether phosphate, 4 parts of lignosulfonate;

[0036] The B agent is made of the following raw materials in parts by weight: 40 parts of betaine, 23 parts of tetraethylenepentamine, 10 parts of formaldehyde, 10 parts of ethanol, and 50 parts of water.

[0037] The preparation method of the A agent comprises: grinding ferrous sulfate, semi-coke, and lime powder through a 500-mesh sieve, and then mixing and stirring evenly with the heavy metal scavenger, alkylamine polyoxyethylene ether phosphate, and lignosulfonate.

[0038] The preparation method of the B agent includes adding tetraethylenepentamine and ethanol into the reaction kettle and stirring until the tetraethylenepentamine is ...

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Abstract

The invention relates to the field of sewage treatment, in particular to a sludge dewatering flocculant and a dewatering method thereof. Sludge dewatering flocculant is composed of agent A and agent B; agent A is composed of the following components, ferrous sulfate, heavy metal scavenger, blue carbon, lime powder, alkylamine polyoxyethylene ether phosphate, lignosulfonate ; Agent B consists of the following ingredients, betaine, tetraethylene pentamine, formaldehyde, ethanol, and water. The sludge dewatering flocculant provided by the invention utilizes the combined action of agent A and agent B to enhance the flocculation performance of the sludge, and can comprehensively treat heavy metals and organic matter, which not only improves the dewatering effect, but also reduces the toxic and harmful substances in the sludge.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to a sludge dewatering flocculant and a dehydration method thereof. Background technique [0002] The sludge produced in the sewage plant is very large, and contains a large number of microorganisms, pathogens, heavy metals and organic pollutants. Reasonable treatment and disposal of sludge is a very important task. At present, the sludge is mainly concentrated, dehydrated, Meet the initial requirements for reduction, and then landfill or incinerate. [0003] In the reduction process, mechanical dehydration is generally used for dehydration, and a dehydration flocculant is added to improve the dehydration effect. At present, the main dehydration flocculants are mainly inorganic substances, such as quicklime, etc. The dehydration effect and the removal of heavy metals, organic matter, etc. The effect is not ideal. Contents of the invention [0004] In view of the above technical p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F11/14
Inventor 杨伟杜普利
Owner 杜普利
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