CN105329980A - Method of oil-water deep separation through gradient slag scraping - Google Patents
Method of oil-water deep separation through gradient slag scraping Download PDFInfo
- Publication number
- CN105329980A CN105329980A CN201510716233.6A CN201510716233A CN105329980A CN 105329980 A CN105329980 A CN 105329980A CN 201510716233 A CN201510716233 A CN 201510716233A CN 105329980 A CN105329980 A CN 105329980A
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- Prior art keywords
- oil
- sewage
- depth
- gradient
- separated
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Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/32—Hydrocarbons, e.g. oil
Abstract
The invention relates to the technical field of sewage treatment, in particular to a method of oil-water deep separation through gradient slag scraping. The method mainly comprises the steps that 1, cooling is conducted on oily sewage; 2, filtration is conducted on the oily sewage subjected to cooling treatment; 3, the sewage is introduced into a standing pond for standing; 4, high pressure air is introduced into the bottom of the standing pond continuously, and fierce horizontal rotating stirring is conducted simultaneously; 5, cooling is conducted on the sewage, oil scraping baffles of which the heights are increased sequentially are arranged in the slope direction of an oil removal tank, and oil scraping is conducted sequentially along with increasing of the water level; 6, oily impurities among the oil scraping baffles are sucked and removed through a suction device; 7, oil removing through adsorption is conducted on the sewage through an oil removal filter, and treatment water processed through oil-water separation is obtained. According to the method of oil-water deep separation through gradient slag scraping, the method is simple, operation is stable, the operation cost is low, and oil-water separation of domestic sewage can be effectively achieved.
Description
Technical field
The present invention relates to technical field of sewage, be specifically related to a kind of method that gradient scrapes the profit degree of depth separation of slag.
Background technology
In daily life, can discharge all kinds of sewage, the sewage of the catering industry discharges such as routine hotel, restaurant, all also has the liquid of oil mixing with water.Dye.For preventing directly being discharged by the liquid of oil mixing with water, catering industry company have employed traditional oil-water separation method, but poor effect, the oily water separation of the degree of depth can not be carried out.
Summary of the invention
For solving the deficiencies in the prior art, the invention provides a kind of method that gradient scrapes the profit degree of depth separation of slag.
The method that the profit degree of depth that gradient scrapes slag is separated, comprises the following steps:
1) by the sewage of oil-containing access heat exchanging pipe, in pipeline, the sewage of oil-containing is lowered the temperature, the sewage of oil-containing is cooled to 6 ~ 14 DEG C;
2) sewage of the oil-containing through cooling process is filtered, removing suspended solid and mucilage binding thing;
3) by through step 2) the sewage access that processes leaves standstill pond and leaves standstill;
4) bottom to standing pond continues to pass into high-pressure air, and while passing into high-pressure air, carries out the fierce stirring horizontally rotated, rotating speed 120 ~ 240 revs/min;
5) from the top in standing pond by through step 4) sewage of oil-containing that processes is pumped into grease removal tank through heat exchanging pipe, sewage is cooled to 4 ~ 10 DEG C, gradient direction along grease removal tank arranges the extension oil baffle increased successively, increases frizing successively along with water level;
6) removed by the impurity suction of suction unit by the oil-containing hung between oil baffle;
7) by through step 6) sewage that processes carries out absorption oil removing by oil removal filter, obtains the process water after oily water separation.
Concrete, step 1) in, the sewage of oil-containing is cooled to 8 ~ 12 DEG C.
Concrete, step 2) in, the aperture of filtering net is 0.5 ~ 4mm.
Concrete, step 3) in, time of repose is 15 ~ 25 minutes.
Concrete, step 4) in, the pressure of high-pressure air is 4 ~ 8 normal atmosphere.
Concrete, step 5) in, sewage is cooled to 5 ~ 6 DEG C.
Concrete, step 6) in, in the impurity of the oil-containing that suction is walked, the content of oil is more than or equal to 82%.
Concrete, step 7) in, the content of the oil-in-water after process is less than or equal to 11%.
The method that the profit degree of depth that gradient provided by the present invention scrapes slag is separated, method is simple, and stable, running cost is low, can carry out the oily water separation of the degree of depth to sanitary sewage.
Embodiment
Be described principle of the present invention and feature below, example, only for explaining the present invention, is not intended to limit scope of the present invention.
Embodiment 1
1) by the sewage of oil-containing access heat exchanging pipe, in pipeline, the sewage of oil-containing is lowered the temperature, the sewage of oil-containing is cooled to 8 DEG C;
2) filtered by the sewage of the oil-containing through cooling process, removing suspended solid and mucilage binding thing, the aperture of filtering net is 2mm;
3) by through step 2) the sewage access that processes leaves standstill pond and leaves standstill, and time of repose is 20 minutes;
4) bottom to standing pond continues to pass into high-pressure air, and while passing into high-pressure air, carries out the fierce stirring horizontally rotated, rotating speed 180 revs/min, and the pressure of high-pressure air is 6 normal atmosphere;
5) from the top in standing pond by through step 4) sewage of oil-containing that processes is pumped into grease removal tank through heat exchanging pipe, sewage is cooled to 8 DEG C, gradient direction along grease removal tank arranges the extension oil baffle increased successively, increases frizing successively along with water level;
6) removed by the impurity suction of suction unit by the oil-containing hung between oil baffle, in the impurity of the oil-containing that suction is walked, the content of oil is 85%;
7) by through step 6) sewage that processes carries out absorption oil removing by oil removal filter, and obtain the process water after oily water separation, the content of the oil-in-water after process is 11%.
Embodiment 2
1) by the sewage of oil-containing access heat exchanging pipe, in pipeline, the sewage of oil-containing is lowered the temperature, the sewage of oil-containing is cooled to 14 DEG C;
2) filtered by the sewage of the oil-containing through cooling process, removing suspended solid and mucilage binding thing, the aperture of filtering net is 0.5mm;
3) by through step 2) the sewage access that processes leaves standstill pond and leaves standstill, and time of repose is 25 minutes;
4) bottom to standing pond continues to pass into high-pressure air, and while passing into high-pressure air, carries out the fierce stirring horizontally rotated, rotating speed 120 revs/min, and the pressure of high-pressure air is 8 normal atmosphere;
5) from the top in standing pond by through step 4) sewage of oil-containing that processes is pumped into grease removal tank through heat exchanging pipe, sewage is cooled to 4 DEG C, gradient direction along grease removal tank arranges the extension oil baffle increased successively, increases frizing successively along with water level;
6) removed by the impurity suction of suction unit by the oil-containing hung between oil baffle, in the impurity of the oil-containing that suction is walked, the content of oil is 88%;
7) by through step 6) sewage that processes carries out absorption oil removing by oil removal filter, and obtain the process water after oily water separation, the content of the oil-in-water after process is 10%.
Embodiment 3
1) by the sewage of oil-containing access heat exchanging pipe, in pipeline, the sewage of oil-containing is lowered the temperature, the sewage of oil-containing is cooled to 6 DEG C;
2) filtered by the sewage of the oil-containing through cooling process, removing suspended solid and mucilage binding thing, the aperture of filtering net is 4mm;
3) by through step 2) the sewage access that processes leaves standstill pond and leaves standstill, and time of repose is 15 minutes;
4) bottom to standing pond continues to pass into high-pressure air, and while passing into high-pressure air, carries out the fierce stirring horizontally rotated, rotating speed 240 revs/min, and the pressure of high-pressure air is 4 normal atmosphere;
5) from the top in standing pond by through step 4) sewage of oil-containing that processes is pumped into grease removal tank through heat exchanging pipe, sewage is cooled to 10 DEG C, gradient direction along grease removal tank arranges the extension oil baffle increased successively, increases frizing successively along with water level;
6) removed by the impurity suction of suction unit by the oil-containing hung between oil baffle, in the impurity of the oil-containing that suction is walked, the content of oil is 86%;
7) by through step 6) sewage that processes carries out absorption oil removing by oil removal filter, and obtain the process water after oily water separation, the content of the oil-in-water after process is 9%.
The foregoing is only better embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. the method that the profit degree of depth that gradient scrapes slag is separated, is characterized in that, comprise the following steps:
1) by the sewage of oil-containing access heat exchanging pipe, in pipeline, the sewage of oil-containing is lowered the temperature, the sewage of oil-containing is cooled to 6 ~ 14 DEG C;
2) sewage of the oil-containing through cooling process is filtered, removing suspended solid and mucilage binding thing;
3) by through step 2) the sewage access that processes leaves standstill pond and leaves standstill;
4) bottom to standing pond continues to pass into high-pressure air, and while passing into high-pressure air, carries out the fierce stirring horizontally rotated, rotating speed 120 ~ 240 revs/min;
5) from the top in standing pond by through step 4) sewage of oil-containing that processes is pumped into grease removal tank through heat exchanging pipe, sewage is cooled to 4 ~ 10 DEG C, gradient direction along grease removal tank arranges the extension oil baffle increased successively, increases frizing successively along with water level;
6) removed by the impurity suction of suction unit by the oil-containing hung between oil baffle;
7) by through step 6) sewage that processes carries out absorption oil removing by oil removal filter, obtains the process water after oily water separation.
2. the method that the profit degree of depth that gradient according to claim 1 scrapes slag is separated, is characterized in that: step 1) in, the sewage of oil-containing is cooled to 8 ~ 12 DEG C.
3. the method that the profit degree of depth that gradient according to claim 1 scrapes slag is separated, is characterized in that: step 2) in, the aperture of filtering net is 0.5 ~ 4mm.
4. the method that the profit degree of depth that gradient according to claim 1 scrapes slag is separated, is characterized in that: step 3) in, time of repose is 15 ~ 25 minutes.
5. the method that the profit degree of depth that gradient according to claim 1 scrapes slag is separated, is characterized in that: step 4) in, the pressure of high-pressure air is 4 ~ 8 normal atmosphere.
6. the method that the profit degree of depth that gradient according to claim 1 scrapes slag is separated, is characterized in that: step 5) in, sewage is cooled to 5 ~ 6 DEG C.
7. the method that the profit degree of depth that gradient according to claim 1 scrapes slag is separated, is characterized in that: step 6) in, in the impurity of the oil-containing that suction is walked, the content of oil is more than or equal to 82%.
8. the method that the profit degree of depth that gradient according to claim 1 scrapes slag is separated, is characterized in that: step 7) in, the content of the oil-in-water after process is less than or equal to 11%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510716233.6A CN105329980A (en) | 2015-10-28 | 2015-10-28 | Method of oil-water deep separation through gradient slag scraping |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510716233.6A CN105329980A (en) | 2015-10-28 | 2015-10-28 | Method of oil-water deep separation through gradient slag scraping |
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| CN105329980A true CN105329980A (en) | 2016-02-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510716233.6A Pending CN105329980A (en) | 2015-10-28 | 2015-10-28 | Method of oil-water deep separation through gradient slag scraping |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2204295Y (en) * | 1994-09-05 | 1995-08-02 | 潘锦才 | Skimming machine |
| JPH09201584A (en) * | 1996-01-26 | 1997-08-05 | Kubota Corp | Oil and water separation tank |
| CN201154924Y (en) * | 2008-01-24 | 2008-11-26 | 南京科创环境工程发展有限公司 | Auto oil-collecting oil expeller |
| CN202346794U (en) * | 2011-11-26 | 2012-07-25 | 青岛金源环境工程有限公司 | Integrated cavitation/dissolved air flotation machine |
| CN203474569U (en) * | 2013-07-30 | 2014-03-12 | 麦王环保工程技术(上海)有限公司 | Combined cavitation-air floatation equipment |
-
2015
- 2015-10-28 CN CN201510716233.6A patent/CN105329980A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2204295Y (en) * | 1994-09-05 | 1995-08-02 | 潘锦才 | Skimming machine |
| JPH09201584A (en) * | 1996-01-26 | 1997-08-05 | Kubota Corp | Oil and water separation tank |
| CN201154924Y (en) * | 2008-01-24 | 2008-11-26 | 南京科创环境工程发展有限公司 | Auto oil-collecting oil expeller |
| CN202346794U (en) * | 2011-11-26 | 2012-07-25 | 青岛金源环境工程有限公司 | Integrated cavitation/dissolved air flotation machine |
| CN203474569U (en) * | 2013-07-30 | 2014-03-12 | 麦王环保工程技术(上海)有限公司 | Combined cavitation-air floatation equipment |
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Application publication date: 20160217 |
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