CN106477670B - Demulsification device for oil-containing emulsified sewage - Google Patents
Demulsification device for oil-containing emulsified sewage Download PDFInfo
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- CN106477670B CN106477670B CN201610964308.7A CN201610964308A CN106477670B CN 106477670 B CN106477670 B CN 106477670B CN 201610964308 A CN201610964308 A CN 201610964308A CN 106477670 B CN106477670 B CN 106477670B
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- sewage
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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
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/32—Hydrocarbons, e.g. oil
Abstract
The invention discloses an emulsion breaking device for oil-containing emulsified sewage, which is characterized in that: the demulsification device comprises a sewage treatment box for sewage demulsification treatment, wherein the side wall of the box body of the sewage treatment box is provided with a sewage inlet, a sewage outlet and a purified water outlet, the sewage treatment box is filled with sewage, and a gas-liquid mixing system, a high-speed injection system, a coalescence-separation system and a plurality of partition plates are arranged in the sewage treatment box. According to the invention, oxygen or ozone and tap water are mixed and dissolved through the gas-liquid mixing and dissolving system to form gas-liquid mixed flow liquid, the gas-liquid mixed flow liquid enters the efficient injection system tangentially, rotates and rises in the conical liquid channel, reaches the outlet and is mixed with sewage to break emulsified oil, so that the oil-in-water emulsion is broken, oil drops are gathered and float upwards to reach the coalescence and separation system, the oil drops are continuously coalesced on the coalescence plate and reach the top of the coalescence plate, water with higher specific gravity falls back to the lower part of the sewage tank and flows to the outlet through the partition plate.
Description
Technical Field
The invention relates to the environmental protection treatment industry, in particular to an oil-containing emulsified sewage demulsification device.
Background
Deep emulsified oily sewage is generated in oil exploitation, chemical production, urban life, ship operation and the like, and the sewage can be recycled or discharged after being purified. The oily sewage oil stain mainly exists in an oil-in-water mode, and the emulsified oil has certain stability due to extremely tiny particle size (about 0.1-10 microns), so that oil-water separation is difficult to realize only by a gravity settling method. The traditional mature treatment method is mostly carried out in modes of adding medicine, flocculating and the like, and huge burden is brought to users due to high investment, complex flow and subsequent generation of a large amount of sludge; in addition, the existing other treatment modes such as coalescence, rotational flow, ultrasonic wave and the like solve the problem of oil-water separation to a certain extent, but the sewage treatment discharge reaching the standard is difficult to stably realize. In the petroleum and petrochemical production of China, a large amount of oily emulsified wastewater is generated, and according to data, the Daqing oil field can produce hundreds of millions of cubic meters of oily sewage every year, and the purification treatment of the part of the sewage needs a large amount of medicaments and high cost; therefore, how to find a reliable and simple physical method for treating sewage is a problem to be confronted by environmental protection personnel. In view of the above, the demulsification device for the oily emulsified sewage successfully solves the relevant problems, has remarkable social and economic benefits, and is suitable for industrial application.
Disclosure of Invention
Aiming at the problems, the invention aims to provide an oil-containing emulsified sewage demulsification device, which realizes demulsification treatment of oil-containing emulsified sewage, and performs oil-water separation on the demulsified sewage to reach the discharge standard.
The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides an oiliness emulsification sewage breakdown of emulsion device which characterized in that: the demulsification device comprises a sewage treatment tank for sewage demulsification treatment, a sewage inlet, a sewage discharge port and a water purification outlet are formed in the side wall of a tank body of the sewage treatment tank, sewage is filled in the sewage treatment tank, a gas-liquid mixing system, a high-speed injection system, a coalescence-separation system and a plurality of partition plates are arranged in the sewage treatment tank, the coalescence-separation system is arranged on the upper portion in the tank body of the sewage treatment tank, the gas-liquid mixing system, a high-efficiency injection system and the partition plates are arranged below the coalescence-separation system, the gas-liquid mixing system mixes ozone and water into a mixed solution, the gas-liquid flow after mixing into the mixed solution enters the high-speed injection system, the high-speed injection system accelerates the gas-liquid flow, the gas-liquid flow is sprayed at a high speed, the gas-liquid flow is uniformly mixed with the sewage in the sewage treatment tank and is demulsified, oil dirt is coalesced by the coalescence-separation system and is discharged from the sewage outlet after passing through the partition plates.
Preferably, the high-speed injection system is internally provided with a conical liquid channel, mixed gas and liquid after passing through a gas-liquid mixing system enters tangentially and is ejected at high speed after being accelerated spirally, an outlet of the high-speed injection system is arranged at the bottom of the sewage treatment tank and is fixedly connected with the sewage treatment tank, the coalescence-separation system is fixedly connected with the periphery of the inner wall of the sewage treatment tank and comprises a plurality of coalescence plates, and a plurality of separation plates are arranged on one side of the high-speed injection system and below the coalescence-separation system and are arranged alternately.
Preferably, the gas-liquid mixing system is a cylindrical pipeline, an injection unit is arranged in the gas-liquid mixing system, a plurality of injection holes are formed in the outer wall of the injection unit, an injection cavity is formed between the injection unit and the inner wall of the gas-liquid mixing system, and gas is injected through the injection holes through the injection cavity and is mixed with liquid.
Preferably, the opening direction of the injection hole is inclined to the liquid flow direction and is inclined in the direction opposite to the liquid flow direction.
The invention has the advantages that:
1. according to the invention, oxygen or ozone and tap water are mixed and dissolved by a gas-liquid mixing and dissolving system to form gas-liquid mixed flow liquid, the gas-liquid mixed flow liquid tangentially enters a high-speed injection system, and is injected into sewage after being spirally accelerated, so that oil-in-water emulsion breaking is realized, oil drops are gathered and float upwards and reach a coalescence and separation system, the oil drops are continuously coalesced on a coalescence plate and reach the top of the coalescence plate, water with higher specific gravity falls back to the lower part of a sewage tank and flows to an outlet through a partition plate, and the oil-containing sewage emulsion breaking is realized with reasonable design and low energy consumption;
2. the high-efficiency injection system is adopted, the mixed liquid is tangentially introduced, the mixed liquid is spirally accelerated in the conical channel, high-speed rotary injection is realized, an air supply guide pipe is arranged at a spray port, trace oxygen or ozone is supplied, the mixed liquid energy is improved, and the design is reasonable;
3. the spraying part is provided with a plurality of spraying holes, so that gas is directly mixed with liquid after being sprayed through the spraying holes, and the inclined angle of the spraying holes is opposite to the flow direction of the liquid, so that the gas is sprayed reversely, and the effect of high-efficiency mixing and dissolving is achieved;
drawings
In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings that are required for the detailed description of the invention or the prior art will be briefly described below.
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural view of the gas-liquid mixing system of the present invention.
Fig. 3 is a schematic structural diagram of the high-speed injection system of the present invention.
Wherein:
1. a sewage treatment tank 2, a sewage inlet 3, a sewage discharge port 4, a purified water outlet 5, a gas-liquid mixing system 6, a high-speed injection system 7, a coalescence-separation system 8 and a clapboard
501. An injection unit 502, a high-pressure spoiler 503, an injection hole 504, an injection cavity 505, a flange 506, a fixing edge 507, an injection part 508, a pressure reducing valve 509, a pressure gauge
601. Tapered liquid channel 602, tangential inlet 603, swirl outlet 604, make-up gas outlet 605, gas line
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The demulsification device for the oil-containing emulsified sewage, which is shown in the figures 1-3, is characterized in that: the demulsification device comprises a sewage treatment box 1 for sewage demulsification treatment, a sewage inlet 2, a sewage outlet 3 and a purified water outlet 4 are arranged on the side wall of the box body of the sewage treatment box 1, the sewage outlet 3 is arranged at the top of the sewage treatment box 1, the sewage treatment box 1 is filled with sewage, a gas-liquid mixing system 5, a high-speed injection system 6, a coalescence-separation system 7 and a plurality of partition plates 8 are arranged in the sewage treatment box 1, the gas-liquid mixing system 5 is a cylindrical pipeline, an injection unit 501 is arranged in the gas-liquid mixing system, the injection unit 501 is of a hollow structure and is provided with cylindrical water channels with the same axial direction, a plurality of injection holes 503 are arranged on the outer wall of the injection unit 501, an injection cavity 504 is formed by the injection unit 501 and the inner wall of the gas-liquid mixing system 5, and the injection cavity 504 is connected with a gas pipeline 605; gas is sprayed at a high speed through a spraying hole of the spraying unit and is rapidly mixed with passing liquid to realize gas-liquid mixed flow, the gas-liquid mixing system 5 is fixedly connected with the high-speed spraying system 6, a conical liquid channel 601 is arranged in the high-speed spraying system 6, mixed solution passing through the gas-liquid mixing system 5 enters the conical liquid channel 601 from a tangential inlet 602, the top end of the conical liquid channel 601 is a rotary outlet 603, the gas-liquid mixed flow entering the high-speed spraying system at a low speed tangentially enters and then rotates upwards along the inner part at a high speed, the speed is gradually increased in the process of continuous rising of the gas-liquid mixed flow due to the action of centrifugal force, when the mixed flow reaches the rotary outlet, the speed can reach a plurality of times of that of the inlet, and the gas-liquid mixed flow sprayed from the rotary outlet is mixed with emulsified sewage in the sewage treatment tank to collide and mix, break the liquid of emulsification, break the liquid drop of water drum oil for oil-water separation, the completion breakdown of emulsion, oil drops after the breakdown of emulsion float owing to density is less, upwards constantly gathers, reachs coalescence-separation system, high-speed injection system 6 sets up in the bottom of sewage treatment case 1, with sewage treatment case 1 fixed connection, coalescence-separation system 7 sets up in atomizing system's top, including a plurality of coalescence-plates, coalescence-separation system 7 and sewage treatment case 1's inner wall fixed connection all around, oil drops gather on the coalescence-separation system's coalescence-plate to because density is little, come up gradually, and the aqueous phase sinks gradually, accomplishes the separation after the breakdown of emulsion, and is a plurality of baffle 8 sets up below one side and coalescence-separation system 7 at high-speed injection system 6, and sets up in turn.
Preferably, a plurality of supplementary gas outlets 604 are arranged around the rotating outlet 603, the supplementary gas outlets 604 are communicated with a gas pipeline 605, the liquid inlets are arranged on the outer wall of the conical liquid channel 601 close to the open end, and the entering direction of the liquid is tangential to the conical liquid channel 601.
Preferably, the high-speed spraying system 6 comprises a plurality of conical liquid channels 601, each conical liquid channel 601 is provided with a liquid inlet, and the liquid inlet direction is tangential to the conical liquid channel 601.
Preferably, flanges 505 are welded to both ends of the gas-liquid mixing system 5, one end of the system is connected to a tap water pipe through the flanges 505, and the other end of the system is closed by a cap.
Preferably, a plurality of the gas-liquid mixing systems 5 are connected in series by a flange 505.
Preferably, the sewage inlet 2 and the purified water outlet 4 are respectively arranged on two mutually far side walls of the box body of the sewage treatment box 1.
Preferably, the spraying unit 501 is in an "i" shape and comprises an upper fixed edge 506 and a lower fixed edge 506 and a spraying part 507 in the middle, the spraying unit 501 is of a hollow structure and is provided with cylindrical channels with the same axial direction, liquid flows through the channels, the outer diameter of the fixed edge 506 is the same as the inner diameter of the mixing and dissolving main body, the spraying unit 501 is embedded into the mixing and dissolving main body through external force, so that the spraying unit 501 and the mixing and dissolving main body are in hard fit, the outer ring of the spraying unit 501 and the inner wall of the mixing and dissolving main body form a distributed annular spraying cavity 504, the spraying part 507 is provided with a plurality of spraying holes 503, the spraying holes 503 are communicated with the channels, the mixing and dissolving main body is provided with gas inlet ports on the outer wall corresponding to the spraying cavity 504, and the high-pressure spoiler 502 is arranged on the downstream of the spraying unit 501 in the opposite direction along the liquid flow and is fixedly connected with the gas-liquid mixing system 5.
Preferably, the opening direction of the injection hole 503 is inclined to the liquid flow direction and is inclined in the opposite direction to the liquid flow direction.
Preferably, the demulsification device also comprises a front-mounted rapid filtering device, so that solid waste in the sewage is prevented from blocking the demulsification.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and these modifications or substitutions do not depart from the spirit of the corresponding technical solutions of the embodiments of the present invention.
Claims (2)
1. The utility model provides an oiliness emulsification sewage breakdown of emulsion device which characterized in that: the demulsification device comprises a sewage treatment tank for sewage demulsification treatment, a sewage inlet, a sewage discharge port and a purified water outlet are arranged on the side wall of a tank body of the sewage treatment tank, sewage is filled in the sewage treatment tank, a gas-liquid mixing system, a high-speed injection system, a coalescence-separation system and a plurality of partition plates are arranged in the sewage treatment tank, the coalescence-separation system is arranged at the upper part in the tank body of the sewage treatment tank, the gas-liquid mixing system, the high-speed injection system and the partition plates are arranged below the coalescence-separation system, the gas-liquid mixing system mixes ozone and dissolves ozone and water, gas-liquid flow after mixing and dissolving enters the high-speed injection system and enters the sewage treatment tank through the injection system to realize mixing and demulsification with the sewage, the sewage after demulsification is collected through coalescence, the sewage is discharged through a sewage oil discharge port, and the treated water is discharged through the purified water outlet through the plurality of partition plates;
the high-speed injection system is internally provided with a conical liquid channel, mixed solution passing through the gas-liquid mixing system enters the conical liquid channel, the top end of the conical liquid channel is provided with a gas-liquid fluid outlet, and the high-speed injection system is arranged at the bottom of the sewage treatment tank and is fixedly connected with the sewage treatment tank; a high-efficiency injection system is adopted, mixed liquid is tangentially introduced, the mixed liquid is spirally accelerated in a conical channel and is injected in a high-speed rotating way, and an air supply guide pipe is arranged at a spraying port to supply trace oxygen or ozone;
the gas-liquid mixing system is a cylindrical pipeline, an injection unit is arranged in the gas-liquid mixing system, a plurality of injection holes are formed in the outer wall of the injection unit, an injection cavity is formed between the injection unit and the inner wall of the gas-liquid mixing system, and gas is injected through the injection cavity and the injection holes to be mixed with liquid;
the opening direction of the injection hole is inclined to the liquid flowing direction and is arranged in a manner of being opposite to the liquid flowing direction.
2. The demulsification device for the emulsified oily sewage as claimed in claim 1, wherein: the coalescence-separation system is fixedly connected with the periphery of the inner wall of the sewage treatment tank and comprises a plurality of coalescence plates, and a plurality of separation plates are arranged on one side of the high-speed injection system and below the coalescence-separation system and are alternately arranged.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610964308.7A CN106477670B (en) | 2016-11-04 | 2016-11-04 | Demulsification device for oil-containing emulsified sewage |
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| CN201610964308.7A CN106477670B (en) | 2016-11-04 | 2016-11-04 | Demulsification device for oil-containing emulsified sewage |
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| CN106477670A CN106477670A (en) | 2017-03-08 |
| CN106477670B true CN106477670B (en) | 2023-04-07 |
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| CN113880292A (en) * | 2021-09-14 | 2022-01-04 | 天津市茂联科技有限公司 | Oil removing process for saponified water |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US5656173A (en) * | 1996-03-05 | 1997-08-12 | National Tank Company | Method of removing dispersed oil from an oil in water emulsion employing aerated solutions within a coalescing media |
| CN201546750U (en) * | 2009-10-23 | 2010-08-11 | 内蒙古满世煤炭集团罐子沟煤炭有限责任公司 | Foam generator for coal mine dust control |
| CN102198984A (en) * | 2010-03-26 | 2011-09-28 | 北京石油化工学院 | Multiphase separation method and system for processing oily waste water |
| CN101863562B (en) * | 2010-05-28 | 2012-08-08 | 胜利油田胜利勘察设计研究院有限公司 | Method and device for treating polymer-containing sewage by using high-gradient agglomerated air floatation |
| CN102218275B (en) * | 2011-04-15 | 2013-04-24 | 大庆鑫禹科技有限公司 | Micro nano bubble generator |
| CN102863058B (en) * | 2011-07-08 | 2014-11-26 | 蓝星环境工程有限公司 | Air-floatation water treatment system |
| CN202199278U (en) * | 2011-08-23 | 2012-04-25 | 神华集团有限责任公司 | Gas-liquid mixed device |
| CN102309932B (en) * | 2011-08-23 | 2013-06-05 | 神华集团有限责任公司 | Gas liquid mixing apparatus and application method thereof |
| EP2776372A1 (en) * | 2011-11-10 | 2014-09-17 | WSI International LLC | Multistage daf-advanced oxidation system |
| CN102887596B (en) * | 2011-12-20 | 2014-03-12 | 辽宁华孚环境工程股份有限公司 | Method and device for treating oil-containing emulsified wastewater or waste emulsion |
| CN102732645B (en) * | 2012-07-24 | 2013-12-11 | 广西大学 | High-speed floatation device |
| CN202864965U (en) * | 2012-09-26 | 2013-04-10 | 森松(江苏)海油工程装备有限公司 | Swirling air-flotation oil-water separator |
| CN106007209B (en) * | 2016-07-08 | 2018-12-25 | 南京日嘉新环保科技有限公司 | A kind of oil refinery's sewage oil removing pretreating process |
| CN206529311U (en) * | 2016-11-04 | 2017-09-29 | 天津斯林力克密封科技有限公司 | A kind of oil-containing emulsifies sewage breaking device |
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Denomination of invention: A demulsification device for oily emulsified wastewater Effective date of registration: 20230811 Granted publication date: 20230407 Pledgee: China Construction Bank Corporation Tianjin Development Branch Pledgor: TIANJIN SEALING LEAK SCIENCE AND TECHNOLOGY CO.,LTD. Registration number: Y2023980051813 |