CN110759428A - Oil-water separation device and application thereof - Google Patents
Oil-water separation device and application thereof Download PDFInfo
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- CN110759428A CN110759428A CN201911232962.9A CN201911232962A CN110759428A CN 110759428 A CN110759428 A CN 110759428A CN 201911232962 A CN201911232962 A CN 201911232962A CN 110759428 A CN110759428 A CN 110759428A
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- oil
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- water separation
- separation chamber
- dissolved air
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 112
- 238000000926 separation method Methods 0.000 title claims abstract description 75
- 239000002893 slag Substances 0.000 claims abstract description 31
- 239000002351 wastewater Substances 0.000 claims abstract description 30
- 238000007667 floating Methods 0.000 claims abstract description 8
- 239000012530 fluid Substances 0.000 claims abstract description 8
- 239000002245 particle Substances 0.000 claims abstract description 8
- 238000004065 wastewater treatment Methods 0.000 claims description 7
- 239000002699 waste material Substances 0.000 claims description 6
- 239000003921 oil Substances 0.000 abstract description 38
- 235000019198 oils Nutrition 0.000 abstract description 38
- 239000010865 sewage Substances 0.000 abstract description 19
- 239000010775 animal oil Substances 0.000 abstract description 7
- 238000007790 scraping Methods 0.000 abstract description 7
- 235000015112 vegetable and seed oil Nutrition 0.000 abstract description 7
- 239000008158 vegetable oil Substances 0.000 abstract description 7
- 238000001514 detection method Methods 0.000 description 4
- 239000003599 detergent Substances 0.000 description 4
- 239000010802 sludge Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000003344 environmental pollutant Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 2
- 230000036284 oxygen consumption Effects 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 239000008213 purified water Substances 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- 229940037003 alum Drugs 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 235000013339 cereals Nutrition 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 239000008239 natural water Substances 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
Images
Classifications
-
- 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
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- 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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
- C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Analytical Chemistry (AREA)
- Removal Of Floating Material (AREA)
- Physical Water Treatments (AREA)
Abstract
The invention provides an oil-water separation device and application thereof, wherein the device comprises: the water collecting system comprises an oil-water separation chamber and a slag scraping unit, and the slag scraping unit is arranged at the opening of the oil-water separation chamber and is used for collecting oil stains floating on the water surface in the oil-water separation chamber; one end of the slag scraping unit is provided with an oil stain collecting tank for collecting oil stain particles scraped by the slag scraping machine; a pressure dissolved air tank and an air pressure pump are arranged outside the side wall of the oil-water separation chamber, and the air pressure pump is communicated with the pressure dissolved air tank in a fluid mode; the pressure dissolved air tank is communicated with the oil-water separation chamber in a fluid mode, and a releaser is arranged between the pressure dissolved air tank and the oil-water separation chamber. After the device is used for treating urban catering sewage, the oil content of the discharged water can be removed by 99 percent, and the content of animal and vegetable oil in the discharged water is lower than the third-level standard (100mg/L) in the Integrated wastewater discharge Standard (GB 8978-1996).
Description
Technical Field
The invention relates to a mechanical device, in particular to an oil-water separation device and application thereof.
Background
With the increase of national economy, the catering industry develops rapidly, and the amount of waste water discharged is larger and larger. The waste water contains animal and vegetable oil with high concentration and a large amount of solid suspended matters, so that the waste water becomes an important water pollution source, and the treatment of oily waste water in catering industry can not only protect the ecological environment, but also reduce the burden of urban sewage treatment stations, thereby having obvious environmental benefit and economic benefit. The oily wastewater in the catering industry has high pollution content, and the main pollutants are animal and vegetable oil, chemical oxygen consumption, suspended matters and the like. At present, the application of the detergent in the catering industry leads oil to float in water in an emulsified state, thereby greatly increasing the value of chemical oxygen consumption in water, which generally reaches thousands of mg/L; secondly, the oil and the detergent have small specific gravity, so that the oil and the detergent are bonded with the suspended matters of the wastewater and are not easy to settle; in addition, the situation that the sewer is blocked to discharge oily water is very common. Therefore, animal and vegetable oil is a key pollutant, and the reduction of the oil content in the oily wastewater in the catering industry has direct influence on the reduction of the chemical oxygen demand and suspended matters. The use of the detergent makes the oil in the oily wastewater in the catering industry emulsified, the oil-water separation is difficult to be carried out in a common oil separation tank, the emulsified oil needs to be demulsified, and meanwhile, the animal and vegetable oil is white paste at normal temperature, so that the pipeline is easy to block during the oil-water separation, and the wastewater treatment is difficult. The oily wastewater in the catering industry has the following hazards: worsen water quality and harm aquatic resources; the health of human body is harmed; pollute the atmosphere, influence crops production, natural landscape, clean natural water source. Because the catering wastewater has complex components and high organic matter content, if the wastewater is discharged into a municipal pipe network without treatment, the pipe network is easy to block and the treatment pressure of a sewage treatment plant is increased.
Therefore, the treatment of the restaurant wastewater reaching the standard has important practical significance.
Disclosure of Invention
In view of the above disadvantages of the prior art, the present invention provides an oil-water separation device and its use, which is used to solve the problem of difficulty in purifying sewage from urban catering.
To achieve the above and other related objects, the present invention provides an oil-water separating device, comprising:
the water collecting system comprises an oil-water separation chamber and a slag scraper, the oil-water separation chamber is an open container, and the slag scraper is arranged at the opening of the oil-water separation chamber and is used for collecting oil stains floating on the water surface in the oil-water separation chamber;
an oil stain collecting tank is arranged on one side of the oil-water separation chamber and is used for collecting oil stain particles scraped by the slag scraper;
a pressure dissolved air tank and an air pressure pump are arranged outside the side wall of the oil-water separation chamber, and the air pressure pump is communicated with the pressure dissolved air tank in a fluid mode; the pressure dissolved air tank is communicated with the oil-water separation chamber in a fluid mode, and a releaser is arranged between the pressure dissolved air tank and the oil-water separation chamber.
In one embodiment, the oil-water separation chamber is a hexahedron as a whole and has an open hexahedron structure. Further, the volume of the oil-water separation chamber is 2.5 × 1.0 × 1.3 m.
Furthermore, the flow application range of the pressure dissolved air tank is 1-2t/h, and the pressure application range is 1-3 kg.
Further, a water outlet is formed in the lower portion of the oil-water separation chamber.
In one embodiment, the slag scraper is a caterpillar multi-scraper type slag scraper.
The invention also provides an urban catering wastewater treatment system which comprises the wastewater separation device, a purified water lifting pump and a waste oil lifting pump, wherein the wastewater lifting pump is used for lifting oily wastewater to the oil-water separation device, and the waste oil lifting pump is used for extracting oil stain particles collected by the oil-water separation device.
The invention also provides the application of the oil-water separation device for purifying the restaurant wastewater.
The invention also provides the application of the urban restaurant wastewater treatment system in purifying restaurant wastewater.
As described above, the oil-water separator and the use thereof according to the present invention have the following advantageous effects:
after the oil-water separation device is used for treating sewage, the oil content of the discharged water can be removed by 99%, and the content of animal and vegetable oil in the discharged water is lower than the third-level standard (100mg/L) in the integrated sewage discharge standard (GB 8978-1996).
Drawings
FIG. 1 shows the structure of an oil-water separator.
FIG. 2 is a schematic view of the working principle of the oil-water separator.
FIG. 3 is a flow chart of the city sewage purification.
Description of the element reference numerals
1 oil-water separation chamber
2 slag scraping machine
201 slag scraper motor
3 pressure dissolved air tank
4 air pressure pump
5 Release
6 greasy dirt collecting vat
Detailed Description
The invention provides an oil-water separation device, which adopts a water purification principle taking a dissolved air method as a core to purify sewage, collects the purified sewage, and then utilizes a slag scraper to collect oil stain particles, thereby separating oil stains from the sewage and achieving the effect of purifying the sewage.
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention.
EXAMPLE 1 oil-Water separation apparatus
The oil-water separation device specifically comprises a water collection system, the water collection system comprises an oil-water separation chamber 1 and a slag scraper 2, the oil-water separation chamber is an open container, and the slag scraper 1 is arranged at the opening of the oil-water separation chamber 1 and used for collecting oil stains floating on the water surface in the oil-water separation chamber. The oil-water separation chamber is integrally hexahedron and has an open hexahedron structure. The length of the oil-water separation chamber is 2.5m, the width of the oil-water separation chamber is 1m, the height of the oil-water separation chamber is 1.3m, the general volume of the oil-water separation chamber is about 2.5 cubic meters, and the oil-water separation chamber can be made of metal materials.
In one embodiment, the slag scraper may be a caterpillar multi-scraper type slag scraper (e.g., GZJ-0.55, N ═ 0.55 kw). The slag scraper is commercially available.
And an oil stain collecting tank 6 is arranged on one side of the oil-water separation chamber of the slag scraper and is used for collecting oil stain particles scraped by the slag scraper. The slag scraper generally comprises a slag scraper motor 201 and a crawler belt, a plurality of scraping plates are arranged on the crawler belt, and the slag scraper motor drives the crawler belt to rotate so as to drive the scraping plates to move back and forth. Generally, the oil stain collecting tank 6 and a scraper of the slag scraper are positioned at the same horizontal height, and the scraped oil stains are collected into the oil stain collecting tank 6 by the back-and-forth movement of the scraper.
The side wall of the oil-water separation chamber is externally provided with a pressure dissolved air tank 3 and an air pressure pump 4, and the air pressure pump 4 is communicated with the pressure dissolved air tank 3 in a fluid mode. The sewage is pressurized by an air pressure pump 4 and then enters a pressure dissolved air tank 3 to be decompressed. The air pressurizing pump and the pressure dissolved air tank are commercially available. In one embodiment, the diameter of the pressure dissolved air tank is 0.3m, the flow application range is 1-2 tons/hour, the pressure application range is 1-3 kilograms, and the height is 0.5 m; the flow rate of the air pressurizing pump is 2 tons/hour, and the lift is 40 meters.
The pressure dissolved air tank is communicated with the oil-water separation chamber in a fluid mode, a releaser 5 is arranged between the pressure dissolved air tank and the oil-water separation chamber, and the releaser is mainly used for further releasing generated dissolved air water.
In one embodiment, a water outlet is disposed at a lower portion of the oil-water separation chamber for discharging purified sewage.
An urban catering wastewater treatment system comprises the oil-water separation device, a wastewater lifting pump and a waste oil lifting pump in embodiment 1, wherein the wastewater lifting pump is used for lifting oily wastewater to the oil-water separation device, and the waste oil lifting pump (for example, adopting south pump industry 40WQ3-10-0.75) is used for extracting oil stain particles collected by the oil-water separation device.
In one embodiment, the system further comprises a purified water lift pump for transporting the purified wastewater to a municipal pipe network.
Instructions for use: restaurant wastewater automatically flows into a primary sedimentation tank at an outlet of a restaurant to remove part of solid matters such as vegetable leaves and rice grains, sewage automatically flows into a grid regulating tank through a pipeline (a sewage pipeline is periodically dredged), most suspended matters are removed through a grid, and then the sewage enters an oil separation regulating tank, and the grid is made of stainless steel artificial grids. The oil separation adjusting tank is arranged for separating and removing partial solid garbage, balancing water quality and adjusting water quantity, and a pre-aeration system is arranged at the bottom of the adjusting tank. Because the oil content in the restaurant wastewater is very high, before the effluent of the regulating reservoir enters the oil-water separation device, PAC is added in front of the oil-water separation device, after pressurization-pressure release, the flocculated mixed solution flows into the oil-water separation chamber, countless fine supersaturated gases are suddenly released by pressure reduction and float on the water surface in combination with alum blossom and suspended substances in water to form floating slag (oil sludge), the floating slag (oil sludge) is periodically scraped by a slag scraper, the floating slag (oil sludge) is discharged into a waste oil concentration tank along a pipeline, and the floating slag (oil sludge) is filled into a plastic barrel through a lift pump and is subjected to specialized treatment. The wastewater after the separation and removal of the pollutants automatically flows (is pumped) into a municipal sewage pipe network.
Example 3
The oil-water separator of the embodiment 1 is used for treating municipal sewage. And carrying out sampling detection. Sampling address: shanghai city Songjiang region wen culvert 99 as the commercial street; detection unit: shanghai Yuehao detection technologies, Inc. The report number HJ1966124-A, the results are shown in tables 1 and 2.
TABLE 1 quality control of water at the inlet of a conditioning tank
TABLE 2 Water quality detection at water outlet of oil-water separation device
Therefore, after the oil-water separation device is used for treating sewage, the oil content of the discharged water can be removed by 99%, and the content of animal and vegetable oil in the discharged water is lower than the third-level standard (100mg/L) in Integrated wastewater discharge Standard (GB 8978-1996).
The above examples are intended to illustrate the disclosed embodiments of the invention and are not to be construed as limiting the invention. In addition, various modifications of the methods and compositions set forth herein, as well as variations of the methods and compositions of the present invention, will be apparent to those skilled in the art without departing from the scope and spirit of the invention. While the invention has been specifically described in connection with various specific preferred embodiments thereof, it should be understood that the invention should not be unduly limited to such specific embodiments. Indeed, various modifications of the above-described embodiments which are obvious to those skilled in the art to which the invention pertains are intended to be covered by the scope of the present invention.
Claims (8)
1. An oil-water separator, comprising:
the water collecting system comprises an oil-water separation chamber and a slag scraper, the oil-water separation chamber is an open container, and the slag scraper is arranged at the opening of the oil-water separation chamber and is used for collecting oil stains floating on the water surface in the oil-water separation chamber;
an oil stain collecting tank is arranged on one side of the oil-water separation chamber and is used for collecting oil stain particles scraped by the slag scraper;
a pressure dissolved air tank and an air pressure pump are arranged outside the side wall of the oil-water separation chamber, and the air pressure pump is communicated with the pressure dissolved air tank in a fluid mode; the pressure dissolved air tank is communicated with the oil-water separation chamber in a fluid mode, and a releaser is arranged between the pressure dissolved air tank and the oil-water separation chamber.
2. The oil-water separator according to claim 1, wherein the oil-water separation chamber is a hexahedron as a whole and has an open hexahedron structure.
3. The oil-water separation device of claim 1, wherein the flow of the pressure dissolved air tank is in a range of 1-2t/h, and the pressure is in a range of 1-3 kg.
4. The oil-water separator according to claim 1, wherein a water outlet is provided at a lower portion of the oil-water separation chamber.
5. The oil-water separator according to claim 1, wherein said scraper is a caterpillar multi-scraper type scraper.
6. An urban catering waste water treatment system, comprising the oil-water separation device as claimed in any one of claims 1 to 4, a waste water lift pump for lifting oily waste water to the oil-water separation device, and a waste oil lift pump for extracting oil-contaminated particles collected by the oil-water separation device.
7. Use of the oil-water separation device according to any of claims 1-5 for purifying restaurant waste water.
8. Use of an urban catering waste water treatment system according to claim 6 for purifying catering waste water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911232962.9A CN110759428A (en) | 2019-12-05 | 2019-12-05 | Oil-water separation device and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911232962.9A CN110759428A (en) | 2019-12-05 | 2019-12-05 | Oil-water separation device and application thereof |
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| Publication Number | Publication Date |
|---|---|
| CN110759428A true CN110759428A (en) | 2020-02-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911232962.9A Pending CN110759428A (en) | 2019-12-05 | 2019-12-05 | Oil-water separation device and application thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111533299A (en) * | 2020-05-22 | 2020-08-14 | 安徽文质信息科技有限公司 | Industrial sewage treatment is with filtering mechanism who has isolating construction |
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| CN106145232A (en) * | 2016-08-30 | 2016-11-23 | 无锡市兴盛环保设备有限公司 | A kind of dissolved air flotation device for sewage disposal |
| CN106315728A (en) * | 2015-06-19 | 2017-01-11 | 宜兴市富陶环境保护设备有限公司 | Complete-dissolution air-floating system |
| CN206142879U (en) * | 2016-09-10 | 2017-05-03 | 盘锦金宇众和工程服务有限公司 | Oil field filter -pressing water oil -water separator |
| CN211338894U (en) * | 2019-12-05 | 2020-08-25 | 上海优必境环保科技有限公司 | Oil-water separating device |
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2019
- 2019-12-05 CN CN201911232962.9A patent/CN110759428A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204778922U (en) * | 2015-06-19 | 2015-11-18 | 宜兴市富陶环境保护设备有限公司 | Dissolve air supporting system entirely |
| CN106315728A (en) * | 2015-06-19 | 2017-01-11 | 宜兴市富陶环境保护设备有限公司 | Complete-dissolution air-floating system |
| CN106145232A (en) * | 2016-08-30 | 2016-11-23 | 无锡市兴盛环保设备有限公司 | A kind of dissolved air flotation device for sewage disposal |
| CN206142879U (en) * | 2016-09-10 | 2017-05-03 | 盘锦金宇众和工程服务有限公司 | Oil field filter -pressing water oil -water separator |
| CN211338894U (en) * | 2019-12-05 | 2020-08-25 | 上海优必境环保科技有限公司 | Oil-water separating device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111533299A (en) * | 2020-05-22 | 2020-08-14 | 安徽文质信息科技有限公司 | Industrial sewage treatment is with filtering mechanism who has isolating construction |
| CN111533299B (en) * | 2020-05-22 | 2022-05-13 | 贵州巨美环境科技有限公司 | Industrial sewage treatment is with filtering mechanism who has isolating construction |
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