CN113735288A - Recovery and separation integrated treatment system for aquatic dangerous chemicals - Google Patents

Recovery and separation integrated treatment system for aquatic dangerous chemicals Download PDF

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Publication number
CN113735288A
CN113735288A CN202010466223.2A CN202010466223A CN113735288A CN 113735288 A CN113735288 A CN 113735288A CN 202010466223 A CN202010466223 A CN 202010466223A CN 113735288 A CN113735288 A CN 113735288A
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China
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membrane separator
tank
outlet
water
treatment system
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CN202010466223.2A
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CN113735288B (en
Inventor
闫茜
谢谚
周志国
牟桂芹
杨洋洋
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China Petroleum and Chemical Corp
Sinopec Safety Engineering Research Institute Co Ltd
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China Petroleum and Chemical Corp
Sinopec Qingdao Safety Engineering Institute
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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
    • C02F9/00—Multistage treatment of water, waste water or sewage
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B15/00—Cleaning or keeping clear the surface of open water; Apparatus therefor
    • E02B15/04—Devices for cleaning or keeping clear the surface of open water from oil or like floating materials by separating or removing these materials
    • E02B15/10—Devices for removing the material from the surface
    • E02B15/101—Means floating loosely on the water absorbing the oil
    • 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
    • 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
    • C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/42—Liquid level
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2301/00—General aspects of water treatment
    • C02F2301/04—Flow arrangements
    • C02F2301/046—Recirculation with an external loop
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2301/00—General aspects of water treatment
    • C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Civil Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Water Treatment By Sorption (AREA)

Abstract

The invention discloses an integrated treatment system for recycling and separating aquatic dangerous chemicals, which comprises a collecting and melting machine; an outlet of a recovery tank on the collecting and chemical-processing machine is connected with an inlet at the upper part of the buffer tank through a first conveying pipeline; the lower outlet of the buffer tank is connected with the upper inlet of the pretreatment tank through a second conveying pipeline, and a second conveying pump is arranged on the second conveying pipeline; the lower outlet of the pretreatment tank is connected with the upper inlet of the first membrane separator through a third conveying pipeline; the lower outlet of the first membrane separator is connected with the upper inlet of the second membrane separator through a fourth conveying pipeline; the lower outlet of the second membrane separator is connected with the upper inlet of the adsorption tank through a fifth conveying pipeline. According to the invention, through the arrangement of the chemical collecting machine, the high-efficiency recovery of the low-water content mixed liquid can be realized for the hazardous chemical; through the multistage separation arrangement of the pretreatment tank, the first membrane separator, the second membrane separator and the adsorption tank, the rapid deep separation of hazardous chemicals and a water phase can be realized.

Description

Recovery and separation integrated treatment system for aquatic dangerous chemicals
Technical Field
The invention belongs to the technical field of hazardous chemical recovery, and particularly relates to an integrated treatment system for recovery and separation of aquatic hazardous chemicals.
Background
With the rapid development of global economy integration, the demand of various countries on chemicals such as petroleum and benzene series is increasing day by day, so that the transportation industry of dangerous chemicals on water is increasing continuously. However, the leakage accidents of the dangerous chemicals on water are frequent in the world, and after the leakage accidents of the dangerous chemicals on the water, especially large-scale leakage accidents, happen, the natural environment of the water area can be seriously polluted, the living environment of human beings is directly harmed, and meanwhile, the marine ecological environment is also seriously harmed.
At present, the recovery treatment process for hazardous chemicals such as overwater petroleum and benzene series mainly comprises a hazardous chemical recovery process and a separation process for separating a recovered mixture on shore, and the hazardous chemical and a water phase in the recovered mixture are separated by a separation device on shore, so that collection of the hazardous chemical and discharge of the water phase are realized. However, the existing recovery processing device has the defect of low recovery rate of hazardous chemical substances, and on the other hand, the separation device cannot fully separate the hazardous chemical substances from the water phase, so that the concentration of the hazardous chemical substances such as oil in the separated water is still high, and the hazardous chemical substances can be discharged after being sent to a sewage treatment plant for secondary processing.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide an integrated treatment system for recycling and separating aquatic dangerous chemicals.
In order to achieve the purpose, the invention adopts the following technical scheme:
an integrated treatment system for recycling and separating aquatic dangerous chemicals comprises a collecting and melting machine;
an outlet of a recovery tank on the collecting and chemical-processing machine is connected with an inlet at the upper part of the buffer tank through a first conveying pipeline, and a first conveying pump is arranged on the first conveying pipeline;
the lower outlet of the buffer tank is connected with the upper inlet of the pretreatment tank through a second conveying pipeline, and a second conveying pump is arranged on the second conveying pipeline;
the lower outlet of the pretreatment tank is connected with the upper inlet of the first membrane separator through a third conveying pipeline;
the lower outlet of the first membrane separator is connected with the upper inlet of the second membrane separator through a fourth conveying pipeline;
the lower outlet of the second membrane separator is connected with the upper inlet of the adsorption tank through a fifth conveying pipeline;
the top outlet of the pretreatment tank, the top outlet of the first membrane separator and the top outlet of the second membrane separator are all connected with the hazardous chemical substance recovery tank through pipelines;
the bottom outlet of the pretreatment tank, the bottom outlet of the first membrane separator, the bottom outlet of the second membrane separator and the bottom outlet of the adsorption tank are all connected with a drainage pipeline;
an online analyzer for detecting water quality is arranged on the drainage pipeline, and a drainage valve is arranged on the drainage pipeline at the rear end of the online analyzer;
and a drainage pipeline between the online analyzer and the drainage valve is connected with a return pipeline, the other end of the return pipeline is connected with the top inlet of the buffer tank, and the return pipeline is provided with a return valve.
Preferably, the chemical collecting disc of the chemical collecting machine is provided with an adsorbing material with oleophilic and hydrophobic properties.
Preferably, a first liquid level measuring and controlling instrument is arranged in the buffer tank.
Preferably, an outlet electromagnetic valve is arranged at an outlet at the lower part of the buffer tank, and a flow meter is arranged on a second conveying line between the outlet electromagnetic valve and the second conveying pump.
Preferably, the top outlet of the pretreatment tank, the top outlet of the first membrane separator, the top outlet of the second membrane separator and the top outlet of the adsorption tank are all provided with electromagnetic valves.
Preferably, a second liquid level measuring and controlling instrument is arranged in the pretreatment tank.
Preferably, a third liquid level measurement and control instrument is arranged in the first membrane separator.
Preferably, a fourth liquid level measurement and control instrument is arranged in the second membrane separator.
Preferably, the bottom outlet of the pretreatment tank, the bottom outlet of the first membrane separator, the bottom outlet of the second membrane separator and the bottom outlet of the adsorption tank are all provided with check valves.
Preferably, a fine filter material is arranged in the pretreatment tank, and the fine filter material is light porous rare earth ceramic sand or quartz sand filter material or light ceramic filler.
Preferably, a tubular interception membrane component is arranged in the first membrane separator and the second membrane separator.
Preferably, the adsorption tank is filled with activated carbon.
Preferably, the adsorption tank is filled with activated carbon and activated carbon fibers.
The invention has the beneficial effects that:
(1) the aquatic hazardous chemical recovery and separation integrated treatment system can realize high-efficiency recovery of low-water-content mixed liquid aiming at hazardous chemicals through the arrangement of the chemical collecting machine; through the multistage separation setting of pretreatment tank, first membrane separator, second membrane separator, adsorption tank, can realize the quick deep separation of dangerization article and aqueous phase, can effectively realize the recovery of high-purity dangerization article and the direct discharge of aqueous phase.
(2) The integrated treatment system for recycling and separating the aquatic dangerous chemicals is provided with the buffer tank between the chemical collecting machine and the pretreatment tank, so that the recycled mixed liquid is temporarily stored in the buffer tank to match the treatment capacity of the front-end chemical collecting machine and the rear-end separation equipment, the backflow and back-mixing phenomena are effectively eliminated, the liquid in the container is ensured to be in a steady flow state, and mechanical impurities such as algae and coarse particles in the mixed liquid are preliminarily removed.
(3) According to the integrated treatment system for recycling and separating the aquatic hazardous chemicals, the online analyzer and the backflow pipeline are arranged, so that the water phase which does not accord with the discharge standard can flow back to the buffer tank through the backflow pipeline and enter a secondary treatment process until the water quality of the separated water phase accords with the discharge standard, the hazardous chemicals and the water phase are fully separated, and the water phase does not need to be sent to a sewage treatment plant for secondary treatment.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.
FIG. 1 is a schematic flow diagram of an integrated aquatic hazardous chemical recovery and separation treatment system according to the present invention;
wherein:
1-a harvester, 101-a first conveying pipeline, 102-a first conveying pump;
2-a buffer tank, 201-a second conveying pipeline, 202-a second conveying pump, 203-a first liquid level measuring and controlling instrument, 204-a flow meter and 205-an outlet electromagnetic valve;
3-a pretreatment tank, 301-a third conveying pipeline, 302-a second liquid level measuring and controlling instrument;
4-a first membrane separator, 401-a fourth conveying pipeline, 402-a third liquid level measuring and controlling instrument;
5-a second membrane separator, 501-a fifth conveying pipeline, 502-a fourth liquid level measuring and controlling instrument;
6-adsorption tank, 7-hazardous chemical recovery tank, 8-electromagnetic valve, 9-drainage pipeline, 10-online analyzer, 11-drainage valve, 12-reflux pipeline, 13-reflux valve, 14-power station, 15-check valve.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
In the present invention, terms such as "upper", "lower", "bottom", "top", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only terms of relationships determined for convenience in describing structural relationships of the components or elements of the present invention, and do not particularly indicate any components or elements of the present invention, and are not to be construed as limiting the present invention.
In the present invention, terms such as "connected" and "connecting" should be interpreted broadly, and mean either a fixed connection or an integral connection or a detachable connection; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be determined according to specific situations by persons skilled in the relevant scientific or technical field, and are not to be construed as limiting the present invention.
The invention is further illustrated with reference to the following figures and examples.
As shown in fig. 1, an integrated treatment system for recycling and separating hazardous chemicals on water comprises a receiving and chemical processing machine 1;
an outlet of a recovery tank on the collecting and chemical-processing machine 1 is connected with an inlet at the upper part of the buffer tank 2 through a first conveying pipeline 101, and a first conveying pump 102 is arranged on the first conveying pipeline 101; the recycled mixed liquor is pumped into a buffer tank 2 for temporary storage so as to match the processing capacity of the joint regulation front-end collecting and decomposing machine 1 and the rear-end separation equipment, effectively eliminate backflow and back mixing phenomena, ensure that the liquid in the container is in a steady flow state, and simultaneously preliminarily remove mechanical impurities such as algae and coarse particles in the mixed liquor;
the lower outlet of the buffer tank 2 is connected with the upper inlet of the pretreatment tank 3 through a second conveying pipeline 201, and a second conveying pump 202 is arranged on the second conveying pipeline 201; pumping the mixed liquid in the buffer tank 2 into a pretreatment tank 3, and removing mechanical impurities such as small particles in the mixed liquid to protect subsequent membrane units;
the lower outlet of the pretreatment tank 3 is connected with the upper inlet of the first membrane separator 4 through a third transfer line 301;
the lower outlet of the first membrane separator 4 is connected with the upper inlet of the second membrane separator 5 through a fourth transfer line 401;
after passing through the pretreatment tank 3, the liquid phase medium enters the first membrane separation tank 4 by means of the self pressure, the suspended state and high-dispersion hydrophobic liquid drops in the mixed liquid of the hazardous chemical substance and the water phase are intercepted and separated, and the hazardous chemical substance which does not permeate through the membrane is cut and discharged to a hazardous chemical substance collection tank 7 through a top outlet of the first membrane separation tank 4; the cleaner water phase permeating the membrane component enters a second membrane separator 5 by means of the pressure of the cleaner water phase, so as to further separate the residual hazardous chemical substances in the water, and the separated upper-layer hazardous chemical substances are cut and discharged to a hazardous chemical substance collecting tank 7 through a top outlet of the second membrane separator 5;
the lower outlet of the second membrane separator 5 is connected with the upper inlet of the adsorption tank 6 through a fifth conveying pipeline 501; the water phase containing trace hazardous chemical substances after membrane separation enters an adsorption tank 6 by self pressure, and is subjected to adsorption advanced treatment by using an adsorbent;
the top outlet of the pretreatment tank 3, the top outlet of the first membrane separator 4 and the top outlet of the second membrane separator 5 are all connected with a hazardous chemical recovery tank 7 through pipelines;
the bottom outlet of the pretreatment tank 3, the bottom outlet of the first membrane separator 4, the bottom outlet of the second membrane separator 5 and the bottom outlet of the adsorption tank 6 are all connected with a drainage pipeline 9;
an online analyzer 10 for detecting water quality is arranged on the drainage pipeline 9, and a drainage valve 11 is arranged on the drainage pipeline at the rear end of the online analyzer 10;
a drain pipeline 9 between the online analyzer 10 and the drain valve 11 is connected with a return pipeline 12, the other end of the return pipeline 12 is connected with an inlet at the top of the buffer tank 2, and a return valve 13 is arranged on the return pipeline 12;
the water phases at the bottom in the pretreatment tank 3, the first membrane separator 4, the second membrane separator 5 and the adsorption tank 6 can all flow to a drainage pipeline 9, an online analyzer 10 on the drainage pipeline 9 detects the water quality of the water phases in the water phase, and if the water quality is qualified, the separated water phases are discharged through a drainage valve 11; if the water quality is unqualified, the drainage valve 11 is closed, the reflux valve 13 is opened, and the water phase in the drainage pipeline 9 flows back to the buffer tank 2 through the reflux pipeline 12 to enter a secondary treatment process.
Specifically, the collecting and chemical-processing machine 1 is also connected with a power station 14, and the power station 14 provides power for the collecting and chemical-processing machine 1; when the device is used specifically, the collecting and chemical-processing machine 1 is placed on the sea surface and is in full contact with leaked hazardous chemicals in the operation process, so that the high-efficiency recovery of the hazardous chemicals is realized; the power station 14 is arranged on the emergency ship and provides power for the chemical collecting and transforming machine 1; the collecting and chemical-processing machine 1 is connected with the power station 14 through a hydraulic rubber tube and a liquid discharge pipe;
specifically, the buffer tank 2, the pretreatment tank 3, the first membrane separator 4, the second membrane separator 5 and the adsorption tank 6 are integrated in the same skid-mounted device, and the buffer tank 2, the pretreatment tank 3, the first membrane separator 4, the second membrane separator 5 and the adsorption tank 6 are integrated in a skid-mounted device on an emergency ship.
Therefore, the integrated treatment system can simultaneously realize the efficient and rapid recovery of leakage hazardous chemical substances and the deep in-situ separation of recovered mixed liquid, and effectively prevent the complex process of offshore recovery-onshore separation in the actual emergency treatment process, thereby solving the problems of large-scale mixture storage facilities and high transportation and treatment costs.
Preferably, the chemical collecting disc of the chemical collecting machine 1 is provided with an adsorption material with oleophylic and hydrophobic properties, and the mixture containing petroleum and benzene series hazardous chemicals is subjected to targeted adsorption by using the oleophylic and hydrophobic properties of the adsorption material on the chemical collecting machine; wherein, the absorption material can be loaded on the absorption disk of the absorption machine 1 by adhering (sheet material) or sleeving (processing into proper shape).
Preferably, a first liquid level measuring and controlling instrument 203 is arranged in the buffer tank 2 and used for monitoring the liquid level of the mixed liquid in the buffer tank 2, and when the first liquid level measuring and controlling instrument 203 monitors that the liquid level in the buffer tank 2 reaches the maximum height of the designed volume of the buffer tank 2, the operation of the recycling machine 1 and the first conveying pump 102 is stopped; when the first liquid level measuring and controlling instrument 203 monitors that the mixed liquid reaches the designed lowest liquid level value of the buffer tank 2, the chemical receiver 1 and the first delivery pump 102 are started again to operate.
Preferably, an outlet solenoid valve 205 is disposed at the lower outlet of the buffer tank 2, and a flow meter 204 is disposed on the second conveying line 201 between the outlet solenoid valve 205 and the second conveying pump 202.
Preferably, the top outlet of the pretreatment tank 3, the top outlet of the first membrane separator 4, the top outlet of the second membrane separator 5 and the top outlet of the adsorption tank 6 are all provided with electromagnetic valves 8.
Preferably, a second liquid level measuring and controlling instrument 302 is arranged in the pretreatment tank 3 and is used for monitoring the liquid level of the mixed liquid in the pretreatment tank 3; because the density of the hazardous chemical substances is less than that of the water phase, the hazardous chemical substances are located at the upper part, when the second liquid level measuring and controlling instrument 302 monitors that the liquid level in the pretreatment tank 3 reaches a certain height, the electromagnetic valve 8 at the top outlet of the pretreatment tank 3 is opened, and the hazardous chemical substances located at the upper part are conveyed into the hazardous chemical substance recovery tank 7; when the second liquid level measuring and controlling instrument 302 monitors that the liquid level in the pretreatment tank 3 is lowered to a certain position, the electromagnetic valve 8 at the top outlet of the pretreatment tank 3 is closed.
Preferably, a third liquid level measuring and controlling instrument 402 is arranged in the first membrane separator 4 and is used for monitoring the liquid level of the mixed liquid in the first membrane separator 4; because the density of the hazardous chemical substances is less than that of the water phase, the hazardous chemical substances are located at the upper part, when the third liquid level measuring and controlling instrument 402 monitors that the liquid level in the first membrane separator 4 reaches a certain height, the electromagnetic valve 8 at the top outlet of the first membrane separator 4 is opened, and the hazardous chemical substances located at the upper part are conveyed into the hazardous chemical substance recovery tank 7; when the third liquid level measuring and controlling instrument 402 detects that the liquid level in the first membrane separator 4 is lowered to a certain position, the electromagnetic valve 8 of the top outlet of the first membrane separator 4 is closed.
Preferably, a fourth liquid level measuring and controlling instrument 502 is arranged in the second membrane separator 5 and is used for monitoring the liquid level of the mixed liquid in the second membrane separator 5; because the density of the hazardous chemical substances is less than that of the water phase, the hazardous chemical substances are located at the upper part, when the fourth liquid level measuring and controlling instrument 502 monitors that the liquid level in the second membrane separator 5 reaches a certain height, the electromagnetic valve 8 at the top outlet of the second membrane separator 5 is opened, and the hazardous chemical substances located at the upper part are conveyed into the hazardous chemical substance recovery tank 7; when the fourth liquid level measuring and controlling instrument 502 detects that the liquid level in the second membrane separator 5 is lowered to a certain position, the electromagnetic valve 8 of the top outlet of the second membrane separator 5 is closed.
Preferably, the bottom outlet of the pretreatment tank 3, the bottom outlet of the first membrane separator 4, the bottom outlet of the second membrane separator 5 and the bottom outlet of the adsorption tank 6 are all provided with check valves 15.
Preferably, a fine filter material is arranged in the pretreatment tank 2, and the fine filter material is light porous rare earth ceramic sand or quartz sand filter material or light ceramic filler.
Preferably, a tubular interception membrane component is arranged in the first membrane separator 4 and the second membrane separator 5. The first membrane separator 4 and the second membrane separator 5 can ensure that the content of dangerous chemicals at the inlet is not more than 50000ppm when the content of the mixed liquid at the outlet is not more than 150 ppm.
Preferably, the adsorption tank 6 is filled with activated carbon.
Preferably, the adsorption tank 6 is filled with activated carbon and activated carbon fibers.
Example 1:
(1) preparation of the adsorption material with oleophylic and hydrophobic properties arranged on the chemical collecting plate of the chemical collecting machine 1:
mixing proper amount of SiO2Fully dissolving the mixture in 1L ethyl acetate, adding 20-50 ml of amino functional group silane (KH550), and then performing ultrasonic dispersion on the mixed solution to uniformly disperse the mixed solution to form a modified solution;
soaking clean melamine sponge in the modification solution for 12-24 h, cleaning the residual modification solution on the surface of the melamine sponge by using ethanol and deionized water, and then drying the melamine sponge in a drying oven at 50-100 ℃ for 6-8 h;
finally, the dried melamine sponge (hydrophobic angle 138 °) is processed to a suitable shape to ensure good bonding with the collecting and digesting tray on the collecting and digesting machine 1.
(2) Selection of fine filter materials in the pretreatment tank 3: selecting the particle size of 0.2-06mm lightweight porous rare earth ceramic sand at a concentration of 0.8-1.3 g/cm3The bulk density of (3) was filled to a thickness of 900 mm.
(3) First and second membrane separators 4 and 5: a tubular interception membrane component with oil removal precision of 10-15 mg (a water contact angle is less than 5 degrees) is selected and filled into the first membrane separator 4 and the second membrane separator 5 respectively in a 10-branch parallel mode.
(4) An adsorption tank 6: activated carbon with the particle size of 0.9-1.2 mm, the water content of 0-3 wt% and the iodine value of 975-1000 mg/g is selected to fill the adsorption tank.
After each material is determined, the processing system is adopted to recover and separate the hazardous chemical in the scene of simulating the leakage of the hazardous chemical, wherein the simulated leakage hazardous chemical is n-hexane, and the thickness of the formed hazardous chemical is 2-3 mm.
Placing a receiving and chemical-processing machine 1 on a water phase simulating the leakage of the overwater hazardous chemical substances, wherein the receiving and chemical-processing machine 1 is connected with a power station 14 through a hydraulic hose, the rotating speed of the receiving and chemical-processing machine is 46rpm, the processing capacity can reach 0.26t/h, and the recovery rate of normal hexane is 88.4L/h; the volume ratio of the normal hexane to the water phase in the mixed liquid recovered by the absorption and chemical machine 1 provided with the adsorption material is 3: 7.
the mixed liquid is pumped into the buffer tank 2 for buffering, meanwhile, the outlet electromagnetic valve 205 is in an open state, and the mixed liquid enters the pretreatment tank 3 through the second delivery pump 202; the mixed liquor is primarily separated after mechanical impurities such as small particles and the like in the mixed liquor are removed by the internal lightweight porous rare earth ceramic sand in the pretreatment tank 3, part of the hazardous chemical substance on the upper part after primary separation is conveyed into a hazardous chemical substance recovery tank 7 by an electromagnetic valve 8 at an outlet at the top of the pretreatment tank 3, the rest of the mixed liquor with the n-hexane concentration of 123mg/L enters a first membrane separator 4 from the lower part of the pretreatment tank 3 by virtue of self pressure, is conveyed into the hazardous chemical substance recovery tank 7 by virtue of the electromagnetic valve 8 at the outlet at the top of the first membrane separator 4 by virtue of the separation action of the first membrane separator 4, the rest of the mixed liquor with the n-hexane concentration of 78.47mg/L enters a second membrane separator 5 by virtue of self pressure from the lower part of the first membrane separator 4, is conveyed into the hazardous chemical substance recovery tank 7 by virtue of an electromagnetic valve 8 at an outlet at the top of the second membrane separator 5 by virtue of the separation action of the second membrane separator 5, the remaining mixed solution with the concentration of the n-hexane of 10mg/L enters an adsorption tank 6 from the lower part of the second membrane separator 5 by means of the self pressure; the water phase after the deep separation treatment of the adsorption tank 6 and the water phases at the bottoms of the pretreatment tank 3, the first membrane separator 4 and the second membrane separator 5 enter a drainage pipeline 9, and the online analyzer 10 does not detect that the water phase contains normal hexane and can directly discharge the normal hexane through a drainage valve 11. Meanwhile, the n-hexane content in the hazardous chemical recovery tank 7 is higher than 99%.
Example 2:
(1) preparation of the adsorption material with oleophylic and hydrophobic properties arranged on the chemical collecting plate of the chemical collecting machine 1:
mixing proper amount of SiO2Fully dissolving the mixture in 1L ethyl acetate, adding 20-50 ml of amino functional group silane (KH550), and then performing ultrasonic dispersion on the mixed solution to uniformly disperse the mixed solution to form a modified solution;
ultrasonically cleaning the compressed nano sponge for 30-45 min by adopting absolute ethyl alcohol, washing redundant absolute ethyl alcohol by using deionized water, and drying the compressed nano sponge by adopting an oven;
soaking the dried compressed nano sponge in the modification solution for 12-24 hours, cleaning the modification solution remained on the surface of the compressed nano sponge by using ethanol and deionized water, and then drying the compressed nano sponge in an oven at 50-100 ℃ for 6-8 hours;
finally, the dried compressed nanosponges (hydrophobic angle 144.2 °) are processed to a suitable shape to ensure good bonding with the harvest disks on the harvester 1.
(2) Selection of fine filter materials in the pretreatment tank 3: selecting quartz sand filter material with the grain diameter of 0.5-0.9 mm and mixing the quartz sand filter material with the grain diameter of 1.2-1.75 g/cm3The bulk density of (3) is filled to a thickness of 800 mm.
(3) First and second membrane separators 4 and 5: a tubular interception membrane component (water contact angle is 0 degree) with oil removal precision of 3-5 mg is selected and filled into the first membrane separator 4 and the second membrane separator 5 respectively in a 14-branch parallel mode.
(4) An adsorption tank 6: selecting active carbon with the particle size of 1.0-1.5 mm, the water content of 3 wt% and the iodine value of 955-975 mg/g and the BET specific surface area of 1200-1400m2The activated carbon fiber with the thickness of 1.5-2.6 mm is prepared by mixing the following raw materials in a volume ratio of 1: the adsorption tank 6 was filled at a ratio of 1.
After each above-mentioned material is confirmed, adopt this application device to retrieve the separation to the danger article in the simulation danger article leakage scene, wherein the simulation leaks the danger article and is xylene, forms danger article thickness and is 3 ~ 5 mm.
Placing a receiving and chemical-processing machine 1 on a water phase simulating the leakage of dangerous chemicals on water, wherein the receiving and chemical-processing machine 1 is connected with a power station 14 through a hydraulic hose, the rotating speed of the receiving and chemical-processing machine is 58rpm, the processing capacity can reach 0.69t/h, and the recovery rate of xylene is 460L/h; the volume ratio of the xylene to the water phase in the mixed liquid recovered by the absorption and chemical machine 1 provided with the adsorption material is 4: 6.
the mixed liquid is pumped into the buffer tank 2 for buffering, meanwhile, the outlet electromagnetic valve 205 is in an open state, and the mixed liquid enters the pretreatment tank 3 through the second delivery pump 202; the mixed liquor is primarily separated after mechanical impurities such as small particles in the mixed liquor are removed by a quartz sand filter material in a pretreatment tank 3, a part of dangerous chemicals on the upper part after primary separation is conveyed into a dangerous chemical recovery tank 7 through an electromagnetic valve 8 at an outlet at the top of the pretreatment tank 3, the remaining mixed liquor with the concentration of 222.91mg/L of xylene enters a first membrane separator 4 from the lower part of the pretreatment tank 3 by virtue of self pressure, the dangerous chemicals on the upper part are conveyed into the dangerous chemical recovery tank 7 through the electromagnetic valve 8 at the outlet at the top of the first membrane separator 4 by virtue of the separation action of the first membrane separator 4, the remaining mixed liquor enters a second membrane separator 5 from the lower part of the first membrane separator 4 by virtue of self pressure, and the part of the dangerous chemicals on the upper part is conveyed into the dangerous chemical recovery tank 7 through the electromagnetic valve 8 at the outlet at the top of the second membrane separator 5 by virtue of the separation action of the second membrane separator 5, the mixed liquid with the residual dimethylbenzene concentration of 153mg/L enters the adsorption tank 6 from the lower part of the second membrane separator 5 by means of the self pressure; the water phase after the deep separation treatment of the adsorption tank 6 and the water phases at the bottoms of the pretreatment tank 3, the first membrane separator 4 and the second membrane separator 5 enter a drainage pipeline 9, and the xylene in the water phase is not detected by an online analyzer 10 and can be directly discharged through a drainage valve 11. Meanwhile, the content of dimethylbenzene in the hazardous chemical recovery tank 7 is higher than 99%.
Example 3:
(1) preparation of the adsorption material with oleophylic and hydrophobic properties arranged on the chemical collecting plate of the chemical collecting machine 1:
dissolving 8-12 g of polyvinyl chloride resin (PVC, K-value 59-55) in 1L of tetrahydrofuran, and then adding a proper amount of SiO2Then, carrying out ultrasonic dispersion on the mixed solution for 30-60 min to uniformly disperse the mixed solution to form a modified solution;
ultrasonically cleaning the polyurethane sponge by adopting absolute ethyl alcohol for 30-45 min, washing redundant absolute ethyl alcohol by using deionized water, and drying the polyurethane sponge by adopting an oven;
soaking the dried polyurethane sponge in the modification solution for 12-24 hours, cleaning the modification solution remained on the surface of the polyurethane sponge by using ethanol and deionized water, and then drying the polyurethane sponge in an oven at 50-100 ℃ for 6-8 hours;
finally, the dried polyurethane sponge (hydrophobic angle 137 °) is processed to a suitable shape to ensure good bonding with the collecting and digesting tray on the collecting and digesting machine 1.
(2) Selection of fine filter materials in the pretreatment tank 3: selecting light porcelain filler with the grain diameter of 0.5-0.8 mm and adding the light porcelain filler with the grain diameter of 0.2-0.4 g/cm3The bulk density of (3) is filled to a thickness of 800 mm.
(3) First and second membrane separators 4 and 5: a tubular interception membrane component (water contact angle is 0 degree) with oil removal precision of 3-5 mg is selected and filled into the first membrane separator 4 and the second membrane separator 5 respectively in a 14-branch parallel mode.
(4) An adsorption tank 6: selecting active carbon with the particle size of 1.1-1.4 mm, the water content of 3 wt% and the iodine value of 930-990 mg/g and the BET specific surface area of 1200-1400 m2The activated carbon fiber with the thickness of 1.8-2.2 mm is prepared from the following raw materials in a volume ratio of 2: the adsorption tank 6 was filled at a ratio of 1.
After each above-mentioned material is confirmed, adopt this application device to retrieve the separation to the danger article in the simulation danger article leakage scene, wherein simulation leakage danger article is No. 0 diesel oil, and it is 15 ~ 25mm to form danger article thickness.
Placing a receiving and chemical-processing machine 1 on a water phase simulating the leakage of dangerous chemicals on water, wherein the receiving and chemical-processing machine 1 is connected with a power station 14 through a hydraulic hose, the rotating speed of the receiving and chemical-processing machine is 58rpm, the processing capacity can reach 1.14t/h, and the recovery rate of normal hexane is 948L/h; the volume ratio of No. 0 diesel oil to the water phase in the mixed liquid recovered by the absorption and chemical machine 1 provided with the adsorption material is 8: 2.
the mixed liquid is pumped into the buffer tank 2 for buffering, meanwhile, the outlet electromagnetic valve 205 is in an open state, and the mixed liquid enters the pretreatment tank 3 through the second delivery pump 202; the mixed liquor is primarily separated after mechanical impurities such as small particles in the mixed liquor are removed by internal light porcelain packing in a pretreatment tank 3, a part of dangerous chemicals on the upper part after primary separation is conveyed into a dangerous chemical recovery tank 7 through an electromagnetic valve 8 at an outlet at the top of the pretreatment tank 3, the rest of the mixed liquor with the concentration of No. 0 diesel oil of 421.3mg/L enters a first membrane separator 4 from the lower part of the pretreatment tank 3 by virtue of self pressure, the dangerous chemicals on the upper part are conveyed into the dangerous chemical recovery tank 7 through the electromagnetic valve 8 at the outlet at the top of the first membrane separator 4 by virtue of the separation action of the first membrane separator 4, the rest of the mixed liquor on the first membrane separator 4 enters a second membrane separator 5 by virtue of self pressure, and the rest of the dangerous chemicals on the upper part is conveyed into the dangerous chemical recovery tank 7 through the electromagnetic valve 8 at the outlet at the top of the second membrane separator 5 by virtue of the separation action of the second membrane separator 5, the rest mixed solution with the concentration of No. 0 diesel oil of 80mg/L enters the adsorption tank 6 from the lower part of the second membrane separator 5 by the self pressure; the water phase after the deep separation treatment of the adsorption tank 6 and the water phase at the bottom of the pretreatment tank 3, the first membrane separator 4 and the second membrane separator 5 enter a drainage pipeline 9, an online analyzer 10 detects that the concentration of No. 0 diesel oil in the water phase is 20mg/L, at the moment, a drainage valve 11 is closed, a backflow valve 13 is opened, and the water phase in the drainage pipeline 9 flows back to the buffer tank 2 through a backflow pipeline 12 to enter a secondary treatment process until the online analyzer 10 detects that No. 0 diesel oil is not contained in the water phase. And meanwhile, the content of No. 0 diesel oil in the final hazardous chemical recovery tank 7 is higher than 99%.
The aquatic hazardous chemical recovery and separation integrated treatment system can realize high-efficiency recovery of low-water-content mixed liquid aiming at hazardous chemicals through the arrangement of the chemical collecting machine; through the multistage separation setting of pretreatment tank, first membrane separator, second membrane separator, adsorption tank, can realize the quick deep separation of dangerization article and aqueous phase, can effectively realize the recovery of high-purity dangerization article and the direct discharge of aqueous phase.
Although the embodiments of the present invention have been described with reference to the accompanying drawings, it is not intended to limit the present invention, and it should be understood by those skilled in the art that various modifications and changes may be made without inventive efforts based on the technical solutions of the present invention.

Claims (13)

1. An integrated treatment system for recycling and separating aquatic dangerous chemicals is characterized by comprising a collecting and melting machine;
an outlet of a recovery tank on the collecting and chemical-processing machine is connected with an inlet at the upper part of the buffer tank through a first conveying pipeline, and a first conveying pump is arranged on the first conveying pipeline;
the lower outlet of the buffer tank is connected with the upper inlet of the pretreatment tank through a second conveying pipeline, and a second conveying pump is arranged on the second conveying pipeline;
the lower outlet of the pretreatment tank is connected with the upper inlet of the first membrane separator through a third conveying pipeline;
the lower outlet of the first membrane separator is connected with the upper inlet of the second membrane separator through a fourth conveying pipeline;
the lower outlet of the second membrane separator is connected with the upper inlet of the adsorption tank through a fifth conveying pipeline;
the top outlet of the pretreatment tank, the top outlet of the first membrane separator and the top outlet of the second membrane separator are all connected with the hazardous chemical substance recovery tank through pipelines;
the bottom outlet of the pretreatment tank, the bottom outlet of the first membrane separator, the bottom outlet of the second membrane separator and the bottom outlet of the adsorption tank are all connected with a drainage pipeline;
an online analyzer for detecting water quality is arranged on the drainage pipeline, and a drainage valve is arranged on the drainage pipeline at the rear end of the online analyzer;
and a drainage pipeline between the online analyzer and the drainage valve is connected with a return pipeline, the other end of the return pipeline is connected with the top inlet of the buffer tank, and the return pipeline is provided with a return valve.
2. The integrated treatment system for recovering and separating dangerous chemicals on water as claimed in claim 1, wherein an adsorption material with oleophilic and hydrophobic properties is arranged on the chemical collecting disc of the chemical collecting machine.
3. The integrated recovery and separation treatment system for dangerous chemicals on water as claimed in claim 1, wherein a first liquid level measuring and controlling instrument is disposed in the buffer tank.
4. The integrated recovery and separation treatment system for the dangerous chemicals on water as claimed in claim 1, wherein an outlet solenoid valve is arranged at the lower outlet of the buffer tank, and a flow meter is arranged on the second delivery line between the outlet solenoid valve and the second delivery pump.
5. The integrated recovery and separation treatment system for dangerous chemicals on water as claimed in claim 1, wherein the top outlet of the pretreatment tank, the top outlet of the first membrane separator, the top outlet of the second membrane separator and the top outlet of the adsorption tank are all provided with electromagnetic valves.
6. The integrated recovery and separation treatment system for dangerous chemicals on water as claimed in claim 1, wherein a second liquid level measuring and controlling instrument is arranged in the pretreatment tank.
7. The integrated recovery and separation treatment system for dangerous chemicals on water as claimed in claim 1, wherein a third liquid level measuring and controlling instrument is arranged in said first membrane separator.
8. The integrated recovery and separation treatment system for dangerous chemicals on water as claimed in claim 1, wherein a fourth liquid level measuring and controlling instrument is arranged in said second membrane separator.
9. The integrated recovery and separation treatment system for dangerous chemicals on water as claimed in claim 1, wherein the bottom outlet of the pretreatment tank, the bottom outlet of the first membrane separator, the bottom outlet of the second membrane separator and the bottom outlet of the adsorption tank are all provided with check valves.
10. The integrated treatment system for recovering and separating the dangerous chemicals on the water as claimed in claim 1, wherein a fine filter material is arranged in the pretreatment tank, and the fine filter material is light porous rare earth ceramic sand or quartz sand filter material or light ceramic filler.
11. The integrated treatment system for recovering and separating the dangerous chemicals on the water as claimed in claim 1, wherein a tubular interception membrane component is arranged in the first membrane separator and the second membrane separator.
12. The integrated treatment system for recovering and separating dangerous chemicals on water as claimed in claim 1, wherein the adsorption tank is filled with activated carbon.
13. The integrated treatment system for recovering and separating dangerous chemicals on water as claimed in claim 1, wherein the adsorption tank is filled with activated carbon and activated carbon fiber.
CN202010466223.2A 2020-05-28 2020-05-28 Recovery and separation integrated treatment system for aquatic dangerous chemicals Active CN113735288B (en)

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US20110089013A1 (en) * 2009-10-16 2011-04-21 Masaaki Sakurai Apparatus of produced water treatment, system and method of using the apparatus, and method of water reuse by using the same
CN102619205A (en) * 2012-03-27 2012-08-01 王昊飞 Intelligent detection and automatic recycling device for waterborne spilt oil
CN104163934A (en) * 2014-07-29 2014-11-26 江苏大学 Preparation method of porous hydrophobic oleophylic sponge
JP2015029949A (en) * 2013-08-01 2015-02-16 住友電気工業株式会社 Oil-water separation treatment system, oil-water separation treatment method and spiral type separation membrane element
CN207714298U (en) * 2017-12-26 2018-08-10 交通运输部科学研究院 A kind of disc type receiptsization machine
CN109778817A (en) * 2019-03-21 2019-05-21 西南石油大学 A kind of spilled oil on water surface recyclable device
CN110872140A (en) * 2018-09-03 2020-03-10 中国石油化工股份有限公司 Hazardous chemical substance separation and recovery system
CN111153512A (en) * 2018-11-08 2020-05-15 中国石油化工股份有限公司 Method and device for treating wastewater containing benzene series and application thereof

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110089013A1 (en) * 2009-10-16 2011-04-21 Masaaki Sakurai Apparatus of produced water treatment, system and method of using the apparatus, and method of water reuse by using the same
CN101746489A (en) * 2010-02-02 2010-06-23 天津汉海环保设备有限公司 Floating oil receiving equipment
CN102619205A (en) * 2012-03-27 2012-08-01 王昊飞 Intelligent detection and automatic recycling device for waterborne spilt oil
JP2015029949A (en) * 2013-08-01 2015-02-16 住友電気工業株式会社 Oil-water separation treatment system, oil-water separation treatment method and spiral type separation membrane element
CN104163934A (en) * 2014-07-29 2014-11-26 江苏大学 Preparation method of porous hydrophobic oleophylic sponge
CN207714298U (en) * 2017-12-26 2018-08-10 交通运输部科学研究院 A kind of disc type receiptsization machine
CN110872140A (en) * 2018-09-03 2020-03-10 中国石油化工股份有限公司 Hazardous chemical substance separation and recovery system
CN111153512A (en) * 2018-11-08 2020-05-15 中国石油化工股份有限公司 Method and device for treating wastewater containing benzene series and application thereof
CN109778817A (en) * 2019-03-21 2019-05-21 西南石油大学 A kind of spilled oil on water surface recyclable device

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