Organic high-polymer coagulant aid

An organic polymer and coagulant aid technology, applied in the direction of flocculation/sedimentation water/sewage treatment, etc., can solve the problems of poor effect and large amount of dosing, and achieve the goal of reducing pollution, reducing the amount of dosing, and reducing the concentration of dosing Effect

Inactive Publication Date: 2013-05-08
大庆腾辉石油工程技术服务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention aims to overcome the problem that the organic synthetic polymer coagulant used alone in the background technology has a poor effect of treating oil field sewage with a large dosage, and provides an organic polymer coagulant

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Weigh 800 g of cationic polyacrylamide and 200 g of polyaluminum chloride, mix the two agents into a blender at normal temperature and pressure, and stir for 40 minutes to prepare the product.

Embodiment 2

[0017] Weigh 900 g of cationic polyacrylamide and 100 g of polyaluminum chloride, mix the two agents into a blender under normal temperature and pressure, and stir for 40 minutes to prepare the product.

Embodiment 3

[0019] Weigh 850 g of cationic polyacrylamide and 150 g of polyaluminum chloride, mix the two agents into a blender under normal temperature and pressure, and stir for 40 minutes to prepare the product.

[0020] The organic macromolecule coagulant aid of the present invention is applied to the Daqing No. 5 Oil Production Plant Xingwuyi Combined Station. The sewage treatment capacity of this station is 16000m3 / d. Before the test, 640 kilograms of common coagulant aid cationic polyacrylamide was added every day. The dosing concentration is 40ppm; after adding the organic polymer coagulant aid of the present invention, add 20 kilograms every day, and the dosing concentration is 1.25ppm. The oil content and suspended solids in the filtered sewage water before dosing were 18.7mg / l and 9.1mg / l respectively, basically up to the standard. The oily and suspended solids in the filtered sewage water after dosing were 14.6mg / l and 6.5mg / l respectively. The effect is obviously better tha...

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PUM

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Abstract

The invention relates to an organic high-polymer coagulant aid, and is mainly used for solving the problem that when an organic synthesized high-polymer coagulant aid is exclusively used for treating oilfield sewage, the dosage is large and the effect is poor. The organic high-polymer coagulant aid comprises the following ingredients in percentage by weight: 80-90% of cationic polyacrylamide, and 10-20% of aluminium polychloride. The organic high-polymer coagulant aid is good in oilfield sewage treatment effect, and low in dosage and dosing concentration, and greatly reduces the contents of oil and suspended solids in water after sewage is filtrated.

Description

technical field [0001] The invention relates to a coagulation aid in the field of oil recovery, in particular to an organic polymer coagulation aid. Background technique [0002] Oilfield oil production wastewater is a large and wide-ranging pollution source. According to statistics, there are more than one billion cubic meters of oilfield wastewater that needs to be treated every year in the country. After the wastewater is treated up to the standard, most of it will be injected into the formation as mining water, and a small part will be discharged into the natural environment. [0003] In the secondary exploitation of oil, water injection development is the main development method. At present, most of the development wells in my country's oil fields are developed by water injection. Along with the development and production of oilfield water flooding, two major problems have emerged, one is the source of injected water; the other is the treatment and discharge of inject...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/56
Inventor 刘颖
Owner 大庆腾辉石油工程技术服务有限公司
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