CN105036465A - Zero-emission process for oil refining wastewater - Google Patents
Zero-emission process for oil refining wastewater Download PDFInfo
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- CN105036465A CN105036465A CN201510398759.4A CN201510398759A CN105036465A CN 105036465 A CN105036465 A CN 105036465A CN 201510398759 A CN201510398759 A CN 201510398759A CN 105036465 A CN105036465 A CN 105036465A
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Abstract
The invention discloses a zero-emission process for oil refining wastewater. The zero-emission process comprises the following steps: removing large impurities of oil refining wastewater by a grid well, and then introducing the oil refining wastewater into a regulating tank; introducing outlet water of the regulating tank into a horizontal-flow oil separation tank, and then introducing the outlet water into an inclined-plate oil separation tank from the horizontal-flow oil separation tank; lifting outlet water of the inclined-plate oil separation tank to a primary air flotation tank by a sewage lifting pump, and introducing outlet water of the primary air flotation tank to a secondary air flotation tank; introducing outlet water of the secondary air flotation tank into a hydrolytic acidification tank; introducing outlet water of the hydrolytic acidification tank into a biological contact oxidization tank; and discharging sludge in the primary air flotation tank, the secondary air flotation tank, the hydrolytic acidification tank and the contact oxidization tank to a sludge concentrating tank to concentrate, returning liquid supernatant of the sludge concentrating tank to the regulating tank, dehydrating sludge after concentrating, and outwards transporting and treating a sludge cake. According to the zero-emission process, a process combining the combined type oil separation tank and a two-stage coagulation air flotation tank which are in series connected, anaerobic biochemical treatment, aerobic biochemical treatment and sludge treatment is adopted to treat oil-containing wastewater, so that effect of removing oil and solids is very good, and the operation cost is low.
Description
Technical field
The invention belongs to chemical technology field, specifically a kind of refinery water technique of zero discharge.
Background technology
Oil refining enterprise's efflux wastewater amount is comparatively large, and Pollutants in Wastewater concentration is higher, and principal pollutant comprise suspended substance, oils, phenol etc.The biodegradability of refinery water is lower, and organic loading is higher, if directly adopt biochemical process, not easily obtain stable good treatment effect, also must consume mass energy because carrying out long aeration, simultaneously refinery water quantity discharged is large, must the concentration of strict restriction water outlet water pollutant could the total amount of control polluted articles preferably.Oils containing higher concentration in waste water, is not easily not only biological degradation, and because oils concentration is high, can sticks to the surface of zoogloea or oxide film, make biological activity be subject to serious suppression.In addition, the material also containing the bio-toxicity such as prussiate or sulfide in waste water or inhibitory substance, should not adopt biological degradation process.
Summary of the invention
The object of the invention is to overcome prior art defect, a kind of refinery water technique of zero discharge is provided.
Object of the present invention can be achieved through the following technical solutions:
A kind of refinery water technique of zero discharge, said method comprising the steps of:
(1) pre-treatment: refinery water is removed after large impurity through grille well and entered equalizing tank;
(2) oil removal process: equalizing tank water outlet enters advection oil separation tank, and advection oil separation tank enters sloping plate oil separation tank, remove in waste water can oil slick and the finely divided oil of part;
(3) air-flotation process: sloping plate oil separation tank water outlet is promoted to one-level air flotation pool by sewage pump, the water outlet of one-level air flotation pool is to secondary air-floatation pond, and one-level air flotation pool and secondary air-floatation pond are all dropped into polymerize aluminum chloride and carried out coagulation air-float reaction;
(4) anaerobic biochemical treatment: the water outlet of secondary air-floatation pond enters hydrolysis acidification pool, is decomposed into small organic molecule by anaerobion by larger molecular organics in waste water, removes part COD;
(5) aerobic treatment: hydrolysis acidification pool water outlet enters biological contact oxidation pond, aerobic microbiological removing organism, removes ammonia nitrogen under nitrification and denitrification effect;
(6) sludge treatment: the mud in one-level air flotation pool, secondary air-floatation pond, hydrolysis acidification pool, contact-oxidation pool drains into sludge thickener and concentrates, and sludge thickener supernatant liquor is back to equalizing tank, after concentrated, mud dewaters, and mud cake outward transport is disposed.
According to waste water quality in described step (1), throw sulfuric acid or unslaked lime in equalizing tank, the pH of regulating and controlling pond water outlet is between 6.8-8.
In described step (3), one-level air flotation pool and secondary air-floatation pond are flat flow.
Beneficial effect of the present invention: the art breading oily(waste)water that the present invention adopts built-up type oil trap, the series connection of two-stage coagulation floatation, anaerobic biochemical treatment, aerobic treatment and sludge treatment to combine, the effect removing oils, solids and COD is fine, and working cost is low.
Embodiment
For the ease of it will be appreciated by those skilled in the art that the present invention is further illustrated below in conjunction with specific embodiment.
Embodiment 1
1.5t refinery water is removed after large impurity through grille well and is entered equalizing tank, according to waste water quality, throws 50kg sulfuric acid in equalizing tank, and the pH of regulating and controlling pond water outlet is 6.8.Equalizing tank water outlet enters advection oil separation tank, and advection oil separation tank enters sloping plate oil separation tank, remove in waste water can oil slick and the finely divided oil of part.To form oil slick layer in face, pond after elaioleucite in sloping plate oil separation tank rises to the water surface, and need on the water surface, establish Oil scraper to get rid of oil slick layer, because the flow velocity of oil removal pool inner water is slow, fluid stable is even, and the suspended substance in former water also will precipitate in oil trap.Sloping plate oil separation tank water outlet is promoted to one-level air flotation pool by sewage pump, the water outlet of one-level air flotation pool is to secondary air-floatation pond, one-level air flotation pool and secondary air-floatation pond are all dropped into polymerize aluminum chloride and are carried out coagulation air-float reaction, one-level air flotation pool is identical with composition with the structure in secondary air-floatation pond, be flat flow, one-level air flotation pool added amount of chemical is 120mg/L, and secondary air-floatation pond added amount of chemical is 70mg/L.The water outlet of secondary air-floatation pond enters hydrolysis acidification pool, by anaerobion, larger molecular organics in waste water is decomposed into small organic molecule, removes part COD.Hydrolysis acidification pool water outlet enters biological contact oxidation pond, and aerobic microbiological removing organism, removes ammonia nitrogen under nitrification and denitrification effect.Mud in one-level air flotation pool, secondary air-floatation pond, hydrolysis acidification pool, contact-oxidation pool drains into sludge thickener and concentrates, and sludge thickener supernatant liquor is back to equalizing tank, and after concentrated, mud dewaters, and mud cake outward transport is disposed.
Embodiment 2
2t refinery water is removed after large impurity through grille well and is entered equalizing tank, according to waste water quality, throws 100kg unslaked lime in equalizing tank, and the pH of regulating and controlling pond water outlet is 8.Equalizing tank water outlet enters advection oil separation tank, and advection oil separation tank enters sloping plate oil separation tank, remove in waste water can oil slick and the finely divided oil of part.To form oil slick layer in face, pond after elaioleucite in sloping plate oil separation tank rises to the water surface, and need on the water surface, establish Oil scraper to get rid of oil slick layer, because the flow velocity of oil removal pool inner water is slow, fluid stable is even, and the suspended substance in former water also will precipitate in oil trap.Sloping plate oil separation tank water outlet is promoted to one-level air flotation pool by sewage pump, the water outlet of one-level air flotation pool is to secondary air-floatation pond, one-level air flotation pool and secondary air-floatation pond are all dropped into polymerize aluminum chloride and are carried out coagulation air-float reaction, one-level air flotation pool is identical with composition with the structure in secondary air-floatation pond, be flat flow, one-level air flotation pool added amount of chemical is 136mg/L, and secondary air-floatation pond added amount of chemical is 50mg/L.The water outlet of secondary air-floatation pond enters hydrolysis acidification pool, by anaerobion, larger molecular organics in waste water is decomposed into small organic molecule, removes part COD.Hydrolysis acidification pool water outlet enters biological contact oxidation pond, and aerobic microbiological removing organism, removes ammonia nitrogen under nitrification and denitrification effect.Mud in one-level air flotation pool, secondary air-floatation pond, hydrolysis acidification pool, contact-oxidation pool drains into sludge thickener and concentrates, and sludge thickener supernatant liquor is back to equalizing tank, and after concentrated, mud dewaters, and mud cake outward transport is disposed.
Above content is only citing made for the present invention and explanation; affiliated those skilled in the art make various amendment to described specific embodiment or supplement or adopt similar mode to substitute; only otherwise depart from invention or surmount this scope as defined in the claims, protection scope of the present invention all should be belonged to.
Claims (3)
1. a refinery water technique of zero discharge, is characterized in that, this technique comprises the following steps:
(1) pre-treatment: refinery water is removed after large impurity through grille well and entered equalizing tank;
(2) oil removal process: equalizing tank water outlet enters advection oil separation tank, and advection oil separation tank enters sloping plate oil separation tank, remove in waste water can oil slick and the finely divided oil of part;
(3) air-flotation process: sloping plate oil separation tank water outlet is promoted to one-level air flotation pool by sewage pump, the water outlet of one-level air flotation pool is to secondary air-floatation pond, and one-level air flotation pool and secondary air-floatation pond are all dropped into polymerize aluminum chloride and carried out coagulation air-float reaction;
(4) anaerobic biochemical treatment: the water outlet of secondary air-floatation pond enters hydrolysis acidification pool, is decomposed into small organic molecule by anaerobion by larger molecular organics in waste water, removes part COD;
(5) aerobic treatment: hydrolysis acidification pool water outlet enters biological contact oxidation pond, aerobic microbiological removing organism, removes ammonia nitrogen under nitrification and denitrification effect;
(6) sludge treatment: the mud in one-level air flotation pool, secondary air-floatation pond, hydrolysis acidification pool, contact-oxidation pool drains into sludge thickener and concentrates, and sludge thickener supernatant liquor is back to equalizing tank, after concentrated, mud dewaters, and mud cake outward transport is disposed.
2. refinery water technique of zero discharge according to claim 1, it is characterized in that, according to waste water quality in described step (1), throw sulfuric acid or unslaked lime in equalizing tank, the pH of regulating and controlling pond water outlet is between 6.8-8.
3. refinery water technique of zero discharge according to claim 1, is characterized in that, in described step (3), one-level air flotation pool and secondary air-floatation pond are flat flow.
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| CN201510398759.4A CN105036465A (en) | 2015-07-07 | 2015-07-07 | Zero-emission process for oil refining wastewater |
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| CN201510398759.4A CN105036465A (en) | 2015-07-07 | 2015-07-07 | Zero-emission process for oil refining wastewater |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106007068A (en) * | 2016-06-30 | 2016-10-12 | 四川欣欣环保科技有限公司 | Method for treating emulsifying wastewater by use of adsorption flocculant |
| CN106830551A (en) * | 2017-03-08 | 2017-06-13 | 秦皇岛玻璃工业研究设计院 | The treatment recovery method of stain disease in a kind of plate glass production |
| CN107226580A (en) * | 2016-08-31 | 2017-10-03 | 无锡市新都环保科技有限公司 | A kind of system and processing method of efficient process oily waste water |
| CN108821508A (en) * | 2018-06-26 | 2018-11-16 | 广州港集团有限公司 | The system and method for processing oily wastewater based on domestic sewage processing system |
| CN112707584A (en) * | 2020-12-02 | 2021-04-27 | 邯郸钢铁集团有限责任公司 | Method for treating cold-rolling oily wastewater of iron and steel enterprises |
| CN113264615A (en) * | 2021-07-21 | 2021-08-17 | 广东拓致环境科技有限公司 | Sewage treatment system |
| CN116177801A (en) * | 2023-02-17 | 2023-05-30 | 安徽北乾智能科技有限公司 | Oily wastewater treatment device and treatment method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1506327A (en) * | 2002-12-06 | 2004-06-23 | 宁 李 | Treating method for sewage containing ammonia nitrogen |
| US20050131084A1 (en) * | 2002-06-18 | 2005-06-16 | Kohler Luis P.F. | Method of purifying fischer-tropsch derived water |
| CN101857335A (en) * | 2009-04-08 | 2010-10-13 | 中国石油天然气股份有限公司 | Method for carrying out advanced treatment on extremely-viscous crude sewage |
| CN101870544A (en) * | 2010-07-16 | 2010-10-27 | 大庆市新中瑞环保有限公司 | Method for treating petroleum refining waste water |
| CN104743748A (en) * | 2015-03-28 | 2015-07-01 | 东华工程科技股份有限公司 | High-concentration sewage treatment technology for refinery wastewater |
-
2015
- 2015-07-07 CN CN201510398759.4A patent/CN105036465A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050131084A1 (en) * | 2002-06-18 | 2005-06-16 | Kohler Luis P.F. | Method of purifying fischer-tropsch derived water |
| CN1506327A (en) * | 2002-12-06 | 2004-06-23 | 宁 李 | Treating method for sewage containing ammonia nitrogen |
| CN101857335A (en) * | 2009-04-08 | 2010-10-13 | 中国石油天然气股份有限公司 | Method for carrying out advanced treatment on extremely-viscous crude sewage |
| CN101870544A (en) * | 2010-07-16 | 2010-10-27 | 大庆市新中瑞环保有限公司 | Method for treating petroleum refining waste water |
| CN104743748A (en) * | 2015-03-28 | 2015-07-01 | 东华工程科技股份有限公司 | High-concentration sewage treatment technology for refinery wastewater |
Non-Patent Citations (1)
| Title |
|---|
| 叶冬茹: "水解-好氧接触氧化处理炼油废水研究", 《广东化工》 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106007068A (en) * | 2016-06-30 | 2016-10-12 | 四川欣欣环保科技有限公司 | Method for treating emulsifying wastewater by use of adsorption flocculant |
| CN107226580A (en) * | 2016-08-31 | 2017-10-03 | 无锡市新都环保科技有限公司 | A kind of system and processing method of efficient process oily waste water |
| CN106830551A (en) * | 2017-03-08 | 2017-06-13 | 秦皇岛玻璃工业研究设计院 | The treatment recovery method of stain disease in a kind of plate glass production |
| CN106830551B (en) * | 2017-03-08 | 2021-07-13 | 秦皇岛玻璃工业研究设计院有限公司 | Method for treating and recycling sewage and wastewater in plate glass production |
| CN108821508A (en) * | 2018-06-26 | 2018-11-16 | 广州港集团有限公司 | The system and method for processing oily wastewater based on domestic sewage processing system |
| CN112707584A (en) * | 2020-12-02 | 2021-04-27 | 邯郸钢铁集团有限责任公司 | Method for treating cold-rolling oily wastewater of iron and steel enterprises |
| CN113264615A (en) * | 2021-07-21 | 2021-08-17 | 广东拓致环境科技有限公司 | Sewage treatment system |
| CN113264615B (en) * | 2021-07-21 | 2021-10-12 | 广东拓致环境科技有限公司 | Sewage treatment system |
| CN116177801A (en) * | 2023-02-17 | 2023-05-30 | 安徽北乾智能科技有限公司 | Oily wastewater treatment device and treatment method thereof |
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Application publication date: 20151111 |