CN108503082A - A kind of oil-containing sewage treatment technique - Google Patents
A kind of oil-containing sewage treatment technique Download PDFInfo
- Publication number
- CN108503082A CN108503082A CN201810292825.3A CN201810292825A CN108503082A CN 108503082 A CN108503082 A CN 108503082A CN 201810292825 A CN201810292825 A CN 201810292825A CN 108503082 A CN108503082 A CN 108503082A
- Authority
- CN
- China
- Prior art keywords
- oil
- separation
- water
- filtering
- sewage treatment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- 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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
-
- 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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
-
- 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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
-
- 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
- C02F1/68—Treatment of water, waste water, or sewage by addition of specified substances, e.g. trace elements, for ameliorating potable water
- C02F1/682—Treatment of water, waste water, or sewage by addition of specified substances, e.g. trace elements, for ameliorating potable water by addition of chemical compounds for dispersing an oily layer on water
-
- 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 discloses a kind of oil-containing sewage treatment techniques, including filtering and impurity removing：Removal of impurities is filtered to oily wastewater；Break milk separation：Break milk separation is carried out to the oily wastewater after filtering and impurity removing, obtains the oil mixing with water liquid of grease layering, realizes a water-oil separating；Coarse separation：Coarse separation is carried out to the oil mixing with water liquid after break milk separation, secondary water-oil separating is realized, and recycle to the fluid isolated, the sewage after separation is continued with；Purified treatment：Purified treatment is carried out to the sewage after coarse separation, a small amount of oil molecule in sewage is filtered out and discharges.The oil-containing sewage treatment technique of the present invention is simple for process, oil-water separation is good, oil removal efficiency is high, and the oily recoverable after detaching, oily wastewater after the process is discharged oil content≤10mg/L, meets discharge standard, and not will produce secondary pollution in processing procedure, solve environmental pollution and problem of resource waste.
Description
Technical field
The present invention relates to water-treatment technology field more particularly to a kind of oil-containing sewage treatment techniques.
Background technology
With the fast development of Chinese economy, environmental protection and resource reutilization are increasingly taken seriously, however, Industry Waste
Water and sanitary sewage are growing day by day, and the degree of water pollution in China is in increasingly severe trend, and the main source of water pollution is
Industrial wastewater, for discharge capacity, oily wastewater occupies first of all types of industries waste water, and source is distributed in all trades and professions, such as oil
Processing, refinement, storage and the transport of industrial petrochina and oil product, the cutting fluid generated in machine-building processing industry and cleaning
Liquid, the emulsifying waste water that the operation of rolling is discharged in metallurgical industry, locomotive waste water, the oil-washing tank of railway locomotive depot are useless in transportation industry
Water, food industry, textile industry, other manufacturing waste water and kitchen waste water etc..Containing a large amount of precious in these oily waste waters
Expensive oily resource can result in waste of resources if be not recycled；If being directly discharged into river, lake or bay, can pollute
Water body influences aquatile existence；If being directly used in agricultural irrigation, interstices of soil can be blocked, interferes crop growth.Cause
This, should carry out it before discharging oily wastewater water-oil separating, the oily processing such as resource recycling and the dirty water decontamination handles.
Prior art discloses the processing methods of a variety of oily wastewaters, such as air-float method, flocculence and ionization method.But it adopts
It is easy to block with air-float method equipment；The chemical reagent being added using flucculation process can cause secondary pollution and the separation rate of water quality
It is not high；Larger electric energy loss can be brought while improving separation rate using ionization method.
Invention content
The purpose of the present invention is to provide a kind of oil-containing sewage treatment techniques, to solve water-oil separating of the existing technology
Efficiency is low, secondary pollution is serious, complex process, high energy consumption and technical problem of high cost.
For this purpose, the present invention uses following technical scheme：
A kind of oil-containing sewage treatment technique, includes the following steps：
Filtering and impurity removing：Removal of impurities is filtered to oily wastewater；
Break milk separation：Break milk separation is carried out to the oily wastewater after filtering and impurity removing, obtains the oil mixing with water of grease layering
Liquid realizes a water-oil separating；
Coarse separation：Coarse separation is carried out to the oil mixing with water liquid after break milk separation, realizes secondary water-oil separating,
And the fluid isolated is recycled, the sewage after separation is continued with；
Purified treatment：Purified treatment is carried out to the sewage after coarse separation, filters out a small amount of oil molecule in sewage.
Preferably, further including being pumped oily wastewater from cesspool by sewage pump before the filtering and impurity removing step
It send into filtering and impurity removing device.
Preferably, further including sterilization treatment after the purified treatment step：Sewage after purified treatment is introduced
Bactericidal unit, the water after the sterilization treatment can be emitted into outside.
Preferably, the filtering and impurity removing step is realized by filtering layer, the filtering layer includes multi-layered filtering element, is filtered described in multilayer
The mesh number of core is changed from small to big along liquid flow direction.
Preferably, the filter core material is at least one in pearl cotton, quartz sand, anthracite, polyethylene and polypropylene
Kind.
Preferably, the break milk separation step is realized by the layer that is demulsified, the filler of the demulsification layer be by oleophylic or
The material medium of hydrophilicity processing.
Preferably, the coarse separation step is realized by Agglomerative separating plate, the Agglomerative separating plate is polypropylene board
Or polyethylene board.
Preferably, the Agglomerative separating plate is 12 °~20 ° relative to the angle of the oil mixing with water liquid.
Preferably, the plate thickness of the Agglomerative separating plate is 2mm~4mm.
Preferably, the purified treatment step is realized by activated carbon adsorption filter and fibers adsorption filter.
Beneficial effects of the present invention are：
(1) oil-containing sewage treatment technique oil-water separation of the invention is good, and oil removal efficiency is high, and the oil after separation can return
It receives and utilizes, the oily wastewater after the process is discharged oil content≤10mg/L, meets discharge standard；Entire technique uses
The method of pure physics can realize the purification discharge of oil slick in oily wastewater, dispersed oil, the quick separating of oil emulsion and sewage, and
It realizes the recycling of oil, is not necessarily to add any chemical agent during the work time, does not destroy oil minor structure, to greatest extent
The loss for reducing raw material had not only saved a large amount of processing costs but also will not cause two without any harmful bi-products and derivative
Secondary pollution has significant economic benefit；
(2) oil-containing sewage treatment technique is simple for process, and energy consumption is relatively low, and cost is relatively low, is suitable for handling various differences dense
The oily wastewater of degree and various composition complexity, has a wide range of application, and industrial utility value is high；
(3) technique first carries out oily wastewater filtering and impurity removing and carries out break milk separation again, it is ensured that first removal contains greasy dirt
Suspended impurity in water reaches requirement of the demulsification layer to water quality in next step, improves the break milk separation efficiency of demulsification layer, prolong
The service life of demulsification layer is grown.
Specific implementation mode
The technical solution further illustrated the present invention with reference to embodiment.It is understood that described herein
Specific embodiment is used only for explaining the present invention rather than limitation of the invention.
A kind of oil-containing sewage treatment technique, includes the following steps：
S100, filtering and impurity removing：Removal of impurities is filtered to oily wastewater.
Specifically, removal of impurities is filtered to oily wastewater in filtering and impurity removing device, filter is provided in filtering and impurity removing device
Layer, filtering layer includes multi-layered filtering element, and the mesh number of multi-layered filtering element is changed from small to big along liquid flow direction, with realize to oily wastewater by
Layer fine filtering.Oily wastewater flow velocity is preferably 80~200L/h, and filter core material is pearl cotton, anthracite, quartz sand, polyethylene
At least one of with polypropylene, the present embodiment is preferably one kind of pearl cotton and quartz sand.The processing step treatment temperature is excellent
It is selected as 30 DEG C~60 DEG C.The purpose of filter layer is the suspended impurity removed in sewage, while reaching next step break milk separation
Requirement to water quality, in order to avoid influence the service life of demulsification layer inner stuffing.
Preferably, further include being pumped to oily wastewater from cesspool by sewage pump before filtering and impurity removing step
It filters in exclusion device.The preferred single-screw (single screw) pump of sewage pump, single-screw (single screw) pump are a kind of hermetic screw pumps of internal messing, belong to rotator type
Positive displacement pump, it will not cause to stir and destroy to input medium, avoid due to pumping and caused by oil mixing with water degree increasing
Greatly.Process range increases, and can handle that content of impurities is more, the higher oily wastewater of viscosity.
S200, break milk separation：Break milk separation is carried out to the oily wastewater after filtering and impurity removing, obtains the grease of grease layering
Mixing liquid realizes a water-oil separating.
Specifically, break milk separation step is realized by the layer that is demulsified, the filler of the layer that is demulsified be by oleophylic or hydrophilicity at
The material medium of reason.Demulsification layer can be demulsified to the fine oil droplets in oily waste water, and be carried out to the oil emulsion in oily wastewater
It effectively stops and coarse, tiny oil droplet aggregates into larger oil droplet and floating on these materials, realize in oily wastewater
The initial gross separation of oil and water.The filler being demulsified in layer can be that the resin of nano modification carries base, modified Teflon or modification
Fibrofelt etc..
S300, coarse separation：Coarse separation is carried out to the oil mixing with water liquid after break milk separation, realizes secondary oil moisture
From, and the fluid isolated is recycled, the sewage after separation is continued with.
Specifically, coarse separation step is realized by the way that Agglomerative separating plate is arranged, and Agglomerative separating plate is polypropylene board or poly- second
Alkene plate, Agglomerative separating plate are 12 °~20 ° relative to the angle of oil mixing with water liquid, and the plate thickness of Agglomerative separating plate is 2mm~4mm,
Treatment temperature is preferably 30 DEG C~60 DEG C, and the flow velocity of oil mixing with water liquid is preferably 80~200L/h.Agglomerative separating plate is arranged
For heeling condition, the water phase of the different sedimentation coefficients and buoyant density in oil-water mixture body and oil phase can be made gradually to divide
From lighter oil phase is moved up along the inclined surface of Agglomerative separating plate, while constantly being assembled in moving process, being collided, is attached
It, become larger, eventually form the oil droplet floating separation of diameter bigger so that separation rate higher.
S400, purified treatment：Purified treatment is carried out to the sewage after coarse separation, filters out a small amount of oil in sewage
Son.
Specifically, purified treatment step is realized by activated carbon adsorption filter and fibers adsorption filter.Two-stage is adsorbed
Purification can thoroughly remove the oil molecule in oily wastewater.Active-carbon bed, flow process activity is filled up in activated carbon adsorption filter
Charcoal bed, trace suspension object, oily substance, organic pollution in water etc. are effectively intercepted by active-carbon bed, then flow to fiber suction
It is further purified in attached filter.The fibrous layer of stacking is provided in fibers adsorption filter, due to having in fibrous layer
There is the fibrous material with bur, the micro oil emulsion in water is hindered and absorbed by its internal compacted fibers bur, through repeatedly wearing
The micro oil emulsion in water after thorn separation is thoroughly absorbed by fibrous material, and grease obtains natural separation.It is discharged by the step
Water quality it is more clean.
Preferably, further include sterilization treatment after purified treatment step：Sewage after purified treatment is introduced into sterilizing dress
It sets, sterilized treated that water can be emitted into outside.Bactericidal unit includes chlorine dioxide generator, sterilizing pond and drainpipe
Road, chlorine dioxide generator do not have human body and animal because it is strong with sterilizing ability with sterilizing pond piping connection, chlorine dioxide
It is harmful and environment is not caused the features such as secondary pollution, it is to be known as safe and nontoxic green disinfectant in the world.Cause
This, meets environmental requirement, and not will produce secondary pollution using chlorine dioxide in the process.Sterilized treated water
It is emitted into outside, oil content≤10mg/L is discharged, meets discharge standard.
Obviously, the above embodiment of the present invention is just for the sake of clearly illustrating examples made by the present invention, and it is pair to be not
The restriction of embodiments of the present invention.For those of ordinary skill in the art, may be used also on the basis of the above description
To make other variations or changes in different ways.There is no necessity and possibility to exhaust all the enbodiments.It is all this
All any modification, equivalent and improvement etc., should be included in the claims in the present invention made by within the spirit and principle of invention
Protection domain within.
Claims (10)
1. a kind of oil-containing sewage treatment technique, which is characterized in that include the following steps：
Filtering and impurity removing：Removal of impurities is filtered to oily wastewater；
Break milk separation：Break milk separation is carried out to the oily wastewater after filtering and impurity removing, obtains the oil mixing with water liquid of grease layering,
Realize a water-oil separating；
Coarse separation：Coarse separation is carried out to the oil mixing with water liquid after break milk separation, realizes secondary water-oil separating, and right
The fluid isolated is recycled, and is continued with to the sewage after separation；
Purified treatment：Purified treatment is carried out to the sewage after coarse separation, filters out a small amount of oil molecule in sewage.
2. oil-containing sewage treatment technique according to claim 1, which is characterized in that before the filtering and impurity removing step also
Including by sewage pump by oily wastewater from being pumped in cesspool in filtering and impurity removing device.
3. oil-containing sewage treatment technique according to claim 1, which is characterized in that after the purified treatment step also
Including sterilization treatment：Sewage after purified treatment is introduced into bactericidal unit, the water after the sterilization treatment can be emitted into outer
Portion.
4. oil-containing sewage treatment technique according to claim 1, which is characterized in that the filtering and impurity removing step passes through filtering layer
It realizes, the filtering layer includes multi-layered filtering element, and the mesh number of filter core described in multilayer is changed from small to big along liquid flow direction.
5. oil-containing sewage treatment technique according to claim 4, which is characterized in that the filter core material is pearl cotton, stone
At least one of sand, anthracite, polyethylene and polypropylene.
6. oil-containing sewage treatment technique according to claim 1, which is characterized in that the break milk separation step passes through demulsification
Layer realizes that the filler of the demulsification layer is the material medium handled by oleophylic or hydrophilicity.
7. oil-containing sewage treatment technique according to claim 1, which is characterized in that the coarse separation step passes through coalescence
Separating plate realizes that the Agglomerative separating plate is polypropylene board or polyethylene board.
8. oil-containing sewage treatment technique according to claim 7, which is characterized in that the Agglomerative separating plate is relative to described
The angle of oil mixing with water liquid is 12 °~20 °.
9. oil-containing sewage treatment technique according to claim 7, which is characterized in that the plate thickness of the Agglomerative separating plate is
2mm~4mm.
10. oil-containing sewage treatment technique according to claim 1, which is characterized in that the purified treatment step passes through work
Property charcoal adsorption filter and fibers adsorption filter realize.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810292825.3A CN108503082A (en) | 2018-03-30 | 2018-03-30 | A kind of oil-containing sewage treatment technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810292825.3A CN108503082A (en) | 2018-03-30 | 2018-03-30 | A kind of oil-containing sewage treatment technique |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108503082A true CN108503082A (en) | 2018-09-07 |
Family
ID=63380260
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810292825.3A Withdrawn CN108503082A (en) | 2018-03-30 | 2018-03-30 | A kind of oil-containing sewage treatment technique |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108503082A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111450576A (en) * | 2020-04-15 | 2020-07-28 | 中国石油化工股份有限公司 | Oil-water separation device and oil-water separation method |
| CN113213690A (en) * | 2021-05-07 | 2021-08-06 | 蓝天鹏（厦门）科技有限公司 | Sewage treatment and reuse method |
| CN114214111A (en) * | 2021-12-29 | 2022-03-22 | 安美科技股份有限公司 | Process for purifying, regenerating and recycling old hydraulic oil |
-
2018
- 2018-03-30 CN CN201810292825.3A patent/CN108503082A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111450576A (en) * | 2020-04-15 | 2020-07-28 | 中国石油化工股份有限公司 | Oil-water separation device and oil-water separation method |
| CN111450576B (en) * | 2020-04-15 | 2022-02-01 | 中国石油化工股份有限公司 | Oil-water separation device and oil-water separation method |
| CN113213690A (en) * | 2021-05-07 | 2021-08-06 | 蓝天鹏（厦门）科技有限公司 | Sewage treatment and reuse method |
| CN114214111A (en) * | 2021-12-29 | 2022-03-22 | 安美科技股份有限公司 | Process for purifying, regenerating and recycling old hydraulic oil |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102050532B (en) | Integral treatment process of oily sewage of oil field | |
| US8529763B2 (en) | Waste water treatment method | |
| US20080058576A1 (en) | System and method for generating fracturing water | |
| CN104710064B (en) | A kind of processing method and processing device containing poly- waste liquid and fracturing outlet liquid | |
| CN101311127A (en) | Method and device for treating a great variety of waste emulsion of high concentration using hyperfiltration membrane method | |
| CN104418452B (en) | A kind of oil field compression fracture returns discharge opeing sewage disposal device | |
| CN108503082A (en) | A kind of oil-containing sewage treatment technique | |
| CN206188537U (en) | Preliminary treatment adds multistage dull and stereotyped ceramic membrane oiliness effluent disposal system | |
| WO2011121619A1 (en) | Water treatment process for oil and gas fields produced water | |
| CN102531291A (en) | Standard discharge treatment system for rock debris wastewater | |
| CN102040311B (en) | Oil field polymer flooding produced water treatment method | |
| CN105417802B (en) | A kind of die casting waste liquid circulation uses system and recycling method | |
| CN104829070A (en) | Oil and gas field drilling fluid waste treatment-while-drilling system | |
| CA2657072C (en) | Waste water treatment method | |
| CN109264922A (en) | A kind of device and method of natural feather waste water recycling device | |
| KR20230074537A (en) | Washing and Wastewater Reclamation Systems | |
| CN101905936A (en) | Method for treating oil field produced water and treatment flow thereof | |
| KR101025927B1 (en) | Wastewater disposal plant for wastewater | |
| CN105621723A (en) | Petroleum sewage treatment method | |
| CN206205833U (en) | A kind of drilling mud processing unit | |
| RU2629786C1 (en) | Method for purifying stagnant reservoir under conditions of continuous ingress of oil products | |
| CN108793531B (en) | Multiple filtration treatment mechanism of high oily waste water | |
| CN107686213A (en) | Oily wastewater treatment method and processing system | |
| CN108751543B (en) | Oil separation treatment equipment in waste water | |
| CN207130116U (en) | A kind of mechanical cleaning wastewater treatment equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180907 |