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Method for separating oil and water

A technology for oil-water separation and sewage, applied in chemical instruments and methods, multi-stage water/sewage treatment, flotation water/sewage treatment, etc., can solve problems such as inability to handle catering sewage grease, poor effect, environmental pollution, etc., to achieve Stable operation, simple method and low operating cost

Inactive Publication Date: 2016-02-24
桂林瑞丰环保微生物应用研究所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If it is discharged directly after slag removal, it will cause serious pollution to the environment
In order to prevent the direct discharge of the liquid mixed with oil and water, companies in the catering industry have adopted the traditional oil-water separation method, but the effect is not good
At the same time, these oil-water can only be used for oil-water separation, and it cannot deal with suspended solids, floating and free grease and other pollutants in the catering sewage.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] 1) The oily sewage is connected to the heat exchange pipeline, and the temperature of the oily sewage is cooled in the pipeline, and the temperature of the oily sewage is lowered to 10°C.

[0021] 2) Filtrate the oily sewage that has undergone cooling treatment to remove suspended solids and gelatinous substances, and the pore diameter of the filter screen is 1mm.

[0022] 3) Put the sewage treated in step 2) into the standing pool for standing, and the standing time is 20 minutes.

[0023] 4) Continuously feed high-pressure air to the bottom of the standing pool, and carry out violent horizontal rotation stirring while feeding high-pressure air, and the pressure of high-pressure air is 5 atmospheres.

[0024] 5) Take away the oily sewage processed through step 4) from the top of the standing tank, and suck the oily impurities on the surface of the oily sewage by means of a suction device, and the oil content in the oily impurities sucked away is about 90%.

[0025] 6)...

Embodiment 2

[0027] 1) The oily sewage is connected to the heat exchange pipeline, and the temperature of the oily sewage is cooled in the pipeline, and the temperature of the oily sewage is lowered to 15°C.

[0028] 2) Filter the oily sewage that has undergone cooling treatment to remove suspended solids and gelatinous substances, and the pore size of the filter screen is 0.5 mm.

[0029] 3) Put the sewage treated in step 2) into the static tank for static, and the static time is 30 minutes.

[0030] 4) Continuously feed high-pressure air to the bottom of the standing pool, and carry out violent horizontal rotation stirring while feeding high-pressure air, and the pressure of high-pressure air is 3 atmospheres.

[0031] 5) Take away the oily sewage processed through step 4) from the top of the standing tank, and suck the oily impurities on the surface of the oily sewage by means of a suction device, the oil content in the oily impurities sucked away is about 85%.

[0032] 6) The sewage t...

Embodiment 3

[0034] 1) The oily sewage is connected to the heat exchange pipeline, and the temperature of the oily sewage is cooled in the pipeline, and the temperature of the oily sewage is lowered to 5°C.

[0035] 2) Filtrate the oily sewage that has undergone cooling treatment to remove suspended solids and gelatinous substances, and the pore size of the filter screen is 2 mm.

[0036] 3) Put the sewage treated in step 2) into the standing pool for standing, and the standing time is 15 minutes.

[0037] 4) Continuously feed high-pressure air to the bottom of the standing pool, and carry out violent horizontal rotation stirring while feeding high-pressure air, and the pressure of high-pressure air is 10 atmospheres.

[0038] 5) Take away the oily sewage processed through step 4) from the top of the standing tank, and suck the oily impurities on the surface of the oily sewage by means of a suction device. The oil content in the oily impurities sucked away is about 92%.

[0039] 6) The se...

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PUM

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Abstract

The invention relates to the technical field of sewage treatment, and in particular to a method for separating oil and water. The method mainly comprises the following steps: 1) cooling the oily sewage; 2) filtering the oily sewage after cooling treatment, and removing suspended solids and colloidal substances; 3) standing the sewage in a static pool; 4) introducing high pressure air while conducting intense horizontal rotation stirring; 5) pumping the oily sewage from the upper part of the static pool, and pumping oily impurities on the surface of the oily sewage by a sucking device; and 6) conducting adsorption oil removal by an oil removal filter, so as to obtain treated water after oil-water separation. The method for separating oil and water has the advantages of simpleness, stable operation and low operation cost, and can effectively realize oil-water separation of household sewage.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a method for separating oil and water. Background technique [0002] In people's daily life, all kinds of sewage are discharged, such as the sewage discharged by hotels, restaurants and other catering industries. In addition to some solid residues, there are also liquids mixed with oil and water. If it is discharged directly after slag removal, it will cause serious pollution to the environment. In order to prevent the direct discharge of the liquid mixed with oil and water, companies in the catering industry have adopted the traditional oil-water separation method, but the effect is not good. At the same time, these oil-water can only be used for oil-water separation, and it cannot handle suspended solids, floating and free grease and other pollutants in the catering sewage. Contents of the invention [0003] In order to solve the deficiencies of the prior art, the ...

Claims

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Application Information

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IPC IPC(8): C02F9/08
CPCC02F9/00C02F1/001C02F1/24C02F1/28
Inventor 林炳营
Owner 桂林瑞丰环保微生物应用研究所