Grease-like sewage treatment method and chemical agent

A sewage treatment and chemical agent technology, which is applied in the field of rapid removal of a large amount of SS, oily sewage treatment, COD water treatment chemical agent, oil, and chromaticity. Difficult separation and other problems, to achieve the effect of low temperature change requirements, reliable product performance, and low dosage

Active Publication Date: 2014-08-27
TANGSHAN HENGTONG SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The flocculants in the background technology are mainly polymerized aluminum salts and iron salts, but in actual water bodies, oil and water exist only in two forms: "oil-in-water" or "water-in-oil", and it is difficult to rely on the flocculants of the current background technology Completely separated, the color of the water body has not been significantly diluted; and its aqueous solution is acidic, which is corrosive to pipelines and other equipment, and will increase subsequent treatment costs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Embodiment 1, the present invention is used to treat the production wastewater of a biodiesel company limited company. In the small test, take the 25ml wastewater experiment as an example, the concentration of the agent ratio is 1%, and the production wastewater is added with 0.9ml of purifying agent aqueous solution; final treatment Results: The removal rate of grease can reach 99.5%, and the removal rate of COD is 55%.

Embodiment 2

[0025] Embodiment 2, the present invention is used to treat the waste water produced by a certain oleochemical company. In the small test, take the 25ml waste water experiment as an example, the concentration of the medicament ratio is 1%, and the oil is added with 1.2ml of purifying agent aqueous solution. The final processing result is: oil The removal rate can reach 99.3%, and the COD removal rate is 50%.

Embodiment 3

[0026] Embodiment 3, the present invention is used to process the production wastewater of a certain fur company. In the small test, take the 25ml wastewater experiment as an example, the proportioning concentration of the medicament is 1%, and the leather wastewater is added with 0.7ml of purifying agent aqueous solution, and the final processing results are as follows: The grease removal rate can reach 99.5%, and the COD removal rate is 60%.

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PUM

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Abstract

The invention relates to a grease-like sewage treatment method and a chemical agent and belongs to the technical field of grease-like chemical-industry type sewage treatment. According to the technical scheme, the chemical agent includes 0.2-0.5% of sodium alkyl benzene sulfonate, 0.5-0.7% of zeolite, 10-15.5% of sodium carbonate, 5-7.3% of calcium hydroxide, 4-9.5% of triacylglycerol acylhydrolase, 1-2.5% of cellulose, 1-3% of sodium percarbonate, 23-36.7% of polyaluminum chloride and 18-24.3% of ferrous sulfate. The grease-like sewage treatment method and the chemical agent have the advantages that the existence forms of water-in-oil and oil-in-water are thoroughly broken, a large quantity of SS, chromaticity colors, grease and COD can be quickly removed, efficiency is high, performance is reliable, the requirement for temperature changes is low, hardening and corroding are avoided, and sewage cannot cause secondary pollution in the later period.

Description

technical field [0001] The invention relates to a method and chemical agent for treating oily sewage, in particular to a water treatment chemical agent for rapidly removing a large amount of SS, chroma, grease, and COD from oily wastewater and a method for using the same, belonging to the technical field of oily chemical wastewater treatment . Background technique [0002] Grease wastewater has the characteristics of large water volume, large fluctuations in water quality, high oil content (emulsified oil, soluble oil, phospholipids, soapstock), high COD, high content of suspended solids, strong acidity, and complex components. The current treatment method is mainly biological treatment, supplemented by necessary pretreatment and advanced physical and chemical treatment. The physical and chemical treatment method mainly relies on the addition of flocculants to polymerize the oil and suspended solids in the water body, and separates the oil and suspended solids from the wate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/52C02F1/40
Inventor 张艳芳张凤龙
Owner TANGSHAN HENGTONG SCI & TECH
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