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Sludge dehydrating agent and dehydrating method thereof

A kind of sludge dehydrating agent and sludge technology, applied in the direction of dehydration/drying/concentrated sludge treatment, etc., can solve the problems of increasing desalination, decolorization, equipment corrosion, etc., achieve enhanced flocculation performance, good reduction effect, and reduce follow-up The effect of the treatment process

Inactive Publication Date: 2015-09-30
杜普利
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using traditional sludge conditioning agents, the dehydration effect is better, but it is easy to introduce acidic substances, which increases the desalination and decolorization of subsequent processes, and is corrosive to equipment

Method used

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  • Sludge dehydrating agent and dehydrating method thereof

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Comparison scheme
Effect test

Embodiment 1

[0019] Sludge dehydrating agent, including Group A substance and Group B substance, said Group A substance is composed of the following raw materials in parts by weight, 10 parts of methacrylamide, 7 parts of acryloyloxyethyltrimethylammonium chloride , 25 parts of 2-acrylamide-2-methylpropanesulfonic acid, 16 parts of dimethylformamide, 3.5 parts of initiator;

[0020] The Group B substances are composed of the following raw materials in parts by weight: 7 parts of plant ash, 75 parts of quicklime, 15 parts of fly ash, and 2.5 parts of zinc oxide.

[0021] The initiator comprises the following materials in parts by weight, 1 part of diisopropyl peroxydicarbonate and 7 parts of potassium persulfate.

[0022] The preparation method of Group A substance is: use distilled water as solvent, methacrylamide, acryloyloxyethyltrimethylammonium chloride, 2-acrylamide-2-methylpropanesulfonic acid, dimethylformamide, initiator The solvent was dissolved and stirred, nitrogen was used as ...

Embodiment 2

[0031] Sludge dehydrating agent, including Group A substance and Group B substance, said Group A substance is composed of the following raw materials in parts by weight, 13 parts of methacrylamide, 5 parts of acryloyloxyethyltrimethylammonium chloride , 27 parts of 2-acrylamide-2-methylpropanesulfonic acid, 13 parts of dimethylformamide, 5 parts of initiator;

[0032] Said group B substances are composed of the following raw materials in parts by weight: 8 parts of plant ash, 70 parts of quicklime, 25 parts of fly ash, and 3 parts of zinc oxide.

[0033] The initiator comprises the following materials in parts by weight, 2 parts of diisopropyl peroxydicarbonate and 8 parts of potassium persulfate.

[0034] The preparation method of Group A substance is: use distilled water as solvent, methacrylamide, acryloyloxyethyltrimethylammonium chloride, 2-acrylamide-2-methylpropanesulfonic acid, dimethylformamide, initiator The solvent was dissolved and stirred, nitrogen was used as a ...

Embodiment 3

[0043] Sludge dehydrating agent includes Group A substances and Group B substances. The Group A substances are composed of the following raw materials in parts by weight, 11 parts of methacrylamide, and 8 parts of acryloyloxyethyltrimethylammonium chloride , 20 parts of 2-acrylamide-2-methylpropanesulfonic acid, 15 parts of dimethylformamide, 4 parts of initiator;

[0044] The Group B substances are composed of the following raw materials in parts by weight: 5 parts of plant ash, 80 parts of quicklime, 20 parts of fly ash, and 2.3 parts of zinc oxide.

[0045] The initiator comprises the following materials in parts by weight, 3 parts of diisopropyl peroxydicarbonate and 5 parts of potassium persulfate.

[0046] The preparation method of Group A substance is: use distilled water as solvent, methacrylamide, acryloyloxyethyltrimethylammonium chloride, 2-acrylamide-2-methylpropanesulfonic acid, dimethylformamide, initiator The solvent was dissolved and stirred, nitrogen was used...

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Abstract

The invention relates to the field of sewage treatment, in particular to a sludge dehydrating agent and a dehydrating method thereof. The sludge dehydrating agent comprises a first group of matter and a second group of matter, the first group of matter comprises methacrylamide, acryloyloxyethyl trimethyl ammonium chloride, 2-acrylamide-2-methyl propane sulphonic acid, dimethylformamide and an initiator. The second group of matter comprises plant ash, quick lime, coal ash and zinc oxide. The dehydrating method comprises the steps that the water content of sludge is regulated, the first group of matter and the second group of matter are added in sequence, even stirring is carried out, pH of the sludge is adjusted to be neutral, and filter pressing is carried out for dehydration. According to the sludge dehydrating agent, the flocculating performance of the sludge is enhanced through the first group of high polymer materials, a supplementing function is achieved through the second group of inorganic matter, a chemical reaction is performed to enable a large amount of free water to be converted into constitution water, the sludge is promoted to be thickened to form gel, a good reduction effect is achieved, no acidic corrosion matter is introduced, and subsequent treatment processes are reduced.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to a sludge dewatering agent and a dehydration method thereof. Background technique [0002] The sludge produced by sewage treatment contains a large number of microorganisms, pathogens, heavy metals and organic pollutants, and the sludge has a high water content and a large amount of production, so the sludge must be dehydrated. At present, the moisture content of the mud cake after sludge dehydration is as high as 80%, and the reduction is not significant. [0003] Sludge deep dehydration refers to the chemical adjustment treatment of sludge with high water content, and then high-pressure dehydration until the water content is below 60%, which not only greatly reduces the amount of sludge, but more importantly, makes sludge follow-up The approach to processing is broader. The conditioning and tempering treatment of sludge is the key link and core technology of deep sludge dewater...

Claims

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Application Information

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IPC IPC(8): C02F11/14
Inventor 杨伟杜普利
Owner 杜普利
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