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Composite flocculation oil removal agent for treatment of oil-containing sewage

A technology of sewage treatment and degreasing agent, which is applied in the direction of flocculation/sedimentation water/sewage treatment, etc. It can solve the problems of high price and toxicity, and achieve the effect of low cost, high degreasing efficiency and less dosage

Inactive Publication Date: 2016-02-10
蒋寿悟
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the organic polymer flocculant can enhance the adsorption bridging effect or coagulation and sedimentation performance, the dosage is small, but there are toxicity problems and the price is high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0007] The composition of the flocculating degreasing agent: 50% of aluminum sulfate, 20% of magnesium chloride, 20% of magnesium hydroxide, 5% of bentonite, and 5% of polyacrylamide (cation, molecular weight 12 million).

[0008] The industrial sewage of a refinery, the water quality before treatment is: oil 100mg / l, COD1211mg / l, the above-mentioned flocculation degreasing agent is made into an aqueous solution according to 5:95 (weight), and the pump is added to the air flotation device, and the addition amount is 10mg / l l. The water quality after treatment is COD530mg / l, the removal rate is 56%, oil is 28mg / l, the removal rate is 72%.

Embodiment 2

[0010] The composition of the flocculation degreasing agent: 89.5% of aluminum sulfate, 2% of magnesium chloride, 3% of magnesium hydroxide, 5% of bentonite, 0.5% of polyacrylamide (cation, molecular weight 12 million). Stir in the reactor with distilled water to make a 30% product .

[0011] The oily sewage discharged from the electric desalination device of a refinery, the oil before treatment is 510mg / l, COD3210mg / l, suspended solids 330mg / l, is added to the drainage pipeline with a pump, and the amount of the above products is 30mg / l, and the sedimentation and separation device is used for treatment The final water quality is: oil 28mg / l, removal rate 95%, COD 530mg / l, removal rate 84.5%, suspended matter 18mg / l removal rate 94.6%.

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PUM

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Abstract

A composite flocculation oil removal agent for treatment of oil-containing sewage is prepared by compounding the following components, by weight, 50-90% of aluminum sulfate, 5-20% of magnesium chloride, 4-20% of magnesium hydroxide, 0.5-5% of bentonite and 0.5-5% of polyacrylamide, wherein all the components are crushed and mixed together at normal temperature.

Description

technical field [0001] The invention belongs to the field of environmental protection, and relates to a preparation method of a composite flocculation and degreasing agent for treating oily sewage, and is especially suitable for pretreatment of various oily sewage such as oil refinery and oilfield sewage. Background technique [0002] Coagulation technology is one of the most widely used technologies in wastewater pretreatment. With the increasing environmental pollution, the control and treatment of water environmental pollution has gradually attracted enough attention and made progress in all aspects. Coagulation technology can be used to remove particulate impurities in water bodies and strengthen the removal of solutes in water bodies and the solid-liquid separation of sludge. Flocculants are one of the key links in coagulation technology, and can be divided into inorganic and organic flocculants according to their chemical properties. Because the organic polymer flocc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/52C02F1/56
Inventor 蒋寿悟
Owner 蒋寿悟
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