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Sewage disposal agent

A sewage treatment agent and salt hydrolysis technology, applied in water/sewage treatment, water/sludge/sewage treatment, flocculation/sedimentation water/sewage treatment, etc. It can solve the problems of secondary pollution and achieve the effect of clear sewage

Active Publication Date: 2015-04-01
广州岸碧化工科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional inorganic flocculants include aluminum sulfate, ferric chloride, etc., but these flocculants will produce metal hydroxides and metal oxides and other residues after use, causing secondary pollution

Method used

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Examples

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Effect test

Embodiment 1

[0014] FeSO 4 ·7H 2 O and polyvinyl chloride multifaceted hollow spheres with a diameter of 3mm are mixed uniformly at a mass ratio of 3:1 to obtain a mixture, and the mixture is heated to hydrolyze the iron salt, and then deionized water twice the total weight of the mixture is added to form a solution, and then The alkali is strengthened in the solution, the pH value is adjusted to 7, the polyvinyl chloride hollow sphere is supported to form hydrated iron oxide, and the product is obtained by drying.

Embodiment 2

[0016] FeSO 4 ·7H 2 O and polyvinyl chloride multifaceted hollow spheres with a diameter of 6mm are mixed evenly at a mass ratio of 6:1 to obtain a mixture, and the mixture is heated to hydrolyze the iron salt, and then deionized water three times the total weight of the mixture is added to form a solution, and then Alkali is strengthened in the solution, the pH value is adjusted to 9, loaded on polyvinyl chloride hollow spheres to form hydrated iron oxide, and dried to obtain the product.

Embodiment 3

[0018] FeSO 4 ·7H 2 O and polyvinyl chloride multifaceted hollow spheres with a diameter of 3mm are mixed uniformly at a mass ratio of 6:1 to obtain a mixture, and the mixture is heated to hydrolyze the iron salt, and then deionized water twice the total weight of the mixture is added to form a solution, and then Alkali is strengthened in the solution, the pH value is adjusted to 9, loaded on polyvinyl chloride hollow spheres to form hydrated iron oxide, and dried to obtain the product.

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Abstract

The invention provides a sewage disposal agent. A preparation method of the sewage disposal agent comprise the following steps: at first, preparing a solution through hybrid heating of FeSO4.7H2O and a polyvinyl chloride hollow sphere, hydrolysis of ferric salt and adding of deionized water, adding strong base in the solution, regulating the pH value to be 7-9, loading on the polyvinyl chloride hollow sphere to form a ferric oxide hydrate, and drying to obtain the sewage disposal agent. The sewage disposal agent can be preferentially combined with filamentous bacteria in sewage and coat the filamentous bacteria to form a reticular structure floc which is not easy to break; rising water flow during the precipitation process has a filtering effect to adsorb small particles and free bacteria which are intercepted in sewage to make sewage clear. Since the sewage disposal agent can preferentially coat the filamentous bacteria, zoogloea is always at an advantage in the substrate competition, which can improve the sewage disposal efficiency and effectively prevent filamentous bacteria sludge bulking.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and in particular relates to a sewage treatment agent. Background technique [0002] Some chemical additives are often added in the sewage treatment process, and flocculants are the most commonly used. Flocculant can promote the sedimentation of impurities in sewage, and play a role in filtration and clarification. Traditional inorganic flocculants include aluminum sulfate, ferric chloride, etc., but these flocculants will produce residues such as metal hydroxides and metal oxides after use, causing secondary pollution. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a sewage treatment agent that can effectively improve the treatment of effluent and prevent sludge bulking caused by filamentous bacteria. [0004] The technical scheme provided by the invention is a kind of sewage treatment agent, and its preparation method is...

Claims

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Application Information

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IPC IPC(8): C02F1/52C02F1/50
CPCC02F1/50C02F1/52C02F1/5236C02F1/56C02F2303/20
Inventor 曾广庆宋红军韩彪莫显坤赵伟潘正现张维维李骋莫春燕莫海燕
Owner 广州岸碧化工科技有限公司
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