CN114105378A - Multiphase extraction comprehensive treatment system and method - Google Patents

Multiphase extraction comprehensive treatment system and method Download PDF

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Publication number
CN114105378A
CN114105378A CN202111294332.1A CN202111294332A CN114105378A CN 114105378 A CN114105378 A CN 114105378A CN 202111294332 A CN202111294332 A CN 202111294332A CN 114105378 A CN114105378 A CN 114105378A
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China
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wastewater
gas
water
oil
cavity
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CN202111294332.1A
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Inventor
吕伯昇
史学儒
王家德
孙永强
邵俊捷
吴骏
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Zhejiang University of Technology ZJUT
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Zhejiang University of Technology ZJUT
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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/007—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by irradiation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/346—Controlling the process
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/75—Multi-step processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/84—Biological processes
    • B01D53/85—Biological processes with gas-solid contact
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86—Catalytic processes
    • B01D53/8678—Removing components of undefined structure
    • B01D53/8687—Organic components
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2258/00—Sources of waste gases
    • B01D2258/02—Other waste gases
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2259/00—Type of treatment
    • B01D2259/80—Employing electric, magnetic, electromagnetic or wave energy, or particle radiation
    • B01D2259/804—UV light
    • 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
    • C02F1/20—Treatment of water, waste water, or sewage by degassing, i.e. liberation of dissolved gases
    • 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
    • C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
    • C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
    • C02F1/46104—Devices therefor; Their operating or servicing
    • 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
    • C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
    • C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
    • C02F1/467—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction
    • C02F1/4672—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction by electrooxydation
    • 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
    • C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/06—Contaminated groundwater or leachate
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

Abstract

The invention discloses a multi-phase extraction comprehensive treatment system and a method, wherein the multi-phase extraction comprehensive treatment system comprises: a multiphase extraction apparatus comprising: an air outlet pipe and a first wastewater delivery pipe; a multiphase separation device in communication with the first wastewater delivery line, the multiphase separation device comprising: an oil outlet pipe and a second wastewater delivery pipe; a pollutant treating device comprising: an electrochemical purification device and a gas purification device; wherein, the electrochemical purification device is communicated with the second wastewater outlet pipe, and the gas purification device is communicated with the gas outlet pipe. The invention solves the problems of low efficiency and long time consumption of biological method for treating pollutant wastewater. In addition, the power of the ultraviolet decomposition device is adjusted according to the concentration of ozone input into the biological trickling filter device, and the temporary storage tank for providing space for the automatic decomposition of the ozone is arranged between the biological trickling filter device and the ultraviolet decomposition device, so that the serious damage of the ozone generated by ultraviolet catalysis to microorganisms in the biological trickling filter device can be avoided.

Description

Multiphase extraction comprehensive treatment system and method
Technical Field
The invention relates to the field of pollution treatment, in particular to a multiphase extraction comprehensive treatment system and a multiphase extraction comprehensive treatment method.
Background
At present, surface water in China is continuously improved after being treated for a long time, and a water body with serious pollution is greatly reduced, but soil and underground water pollution is still common and serious, so that the pollution is just the major hidden trouble of limiting the structural transformation of China, threatening the safety of food and drinking water, harming the physical health of people and hindering the sustainable development of society and economy. Moreover, under the influence of natural factors and human activities, the conversion relationship between surface water and underground water by virtue of the environment such as atmosphere, soil and the like tends to be complicated, the change of water circulation is caused, a series of ecological environment negative benefits are induced, and the problems of water resources and ecological environment are highlighted.
Multi-Phase extraction (MPE) is a current main technology for treating organic pollution of soil and underground water in industrial polluted fields at home and abroad, and the working principle of the MPE is to simultaneously extract soil gas, underground water and a floating oil layer in a polluted area, and pump pollutants in a gaseous state, a water-soluble state and a light oil Phase from the underground to the ground for treatment, so that the MPE has small disturbance on the fields, is flexible to apply, is suitable for repairing fields with medium permeability, and has a very wide application prospect in China.
The MPE system extraction water has the characteristics of low pollutant concentration, more pollutants difficult to degrade, high conductivity and the like, and the related treatment methods at present comprise biological treatment, iron-based oxidation, electric decomposition, activated carbon adsorption, photocatalysis and the like. Because groundwater recharge is involved, secondary pollution prevention and control must be concerned with in the process of extraction water treatment, the iron-carbon micro-electrolysis and Fenton process are not suitable for extraction water treatment, although activated carbon adsorption can effectively remove refractory organic pollutants and heavy metal ions, and the method is suitable for treatment of low-concentration wastewater, but regeneration is needed, so that the problem of secondary treatment exists; the biological method is an environment-friendly technology, but the treatment of the low-concentration wastewater with high specific gravity of the pollutants difficult to degrade is low in treatment efficiency, needs other technical assistance and needs a long time.
Disclosure of Invention
Therefore, the embodiment of the invention provides a multi-phase extraction comprehensive treatment system and method, which effectively solve the problems of low efficiency and long time consumption of biological treatment of pollutant wastewater.
In one aspect, the present invention provides a multi-phase extraction comprehensive treatment system, comprising: a multiphase extraction apparatus comprising: an air outlet pipe and a first wastewater delivery pipe; a multiphase separation device in communication with the first wastewater delivery line, the multiphase separation device comprising: an oil outlet pipe and a second wastewater delivery pipe; a pollutant treating device comprising: an electrochemical purification device and a gas purification device; wherein, the electrochemical purification device is communicated with the second wastewater outlet pipe, and the gas purification device is communicated with the gas outlet pipe.
The gas purification device comprises an ultraviolet decomposition device and a biological trickling filter device; the ultraviolet decomposition device is used for preliminarily degrading organic pollutants in the waste gas led out from the gas outlet pipe through ultraviolet light catalysis, so that the molecular weight of the pollutants is reduced; the biological trickling filter device solidifies the preliminarily degraded micromolecule pollutants into carbon dioxide and water through microbial degradation; a power regulator for regulating the power of the ultraviolet lamp is arranged in the ultraviolet decomposition device; the power regulator regulates the power of the ultraviolet lamp to prevent the concentration of ozone in the gas output by the ultraviolet decomposition device from exceeding a preset upper limit; a gas temporary storage tank is connected between the ultraviolet decomposition device and the biological trickling filtration device; the gas temporary storage tank is used for temporarily storing the gas output by the ultraviolet decomposition device, so that the ozone in the gas is self-degraded, and the ozone concentration in the gas input into the biological trickling filter device is reduced.
Compared with the prior art, the technical effect achieved after the technical scheme is adopted is as follows: the electrochemical purification device, such as an electrolytic cell, can convert the refractory pollutants into small molecular substances or completely mineralize the refractory pollutants into CO through the electron transfer on the surface of a catalytic electrode and the catalytic chemical reaction of active species under the action of an electric field2、H2Inorganic substances such as O; in the electrochemical treatment process, only power consumption exists, and compared with a biological method, the electrochemical method has the advantages of no sludge generation, no blockage and no need of special management, so that the method has the advantages of high efficiency and time saving; the purification efficiency of the electrochemical purification device can be further improved by combining the underground water extraction effect of the multiphase extraction device and the oil-water separation effect of the multiphase separation device.
As a preferred embodiment, the electrochemical purification apparatus includes: the electrolytic cell box body is provided with an electrolytic cavity, and the electrolytic cavity is communicated with the second wastewater outlet pipe; at least one anode plate and at least one cathode plate, the anode plate and the cathode plate being located in the electrolysis chamber; and the power supply is connected with the anode plate and the cathode plate through leads.
The technical effect achieved after the technical scheme is adopted is as follows: the electrochemical purification device can accelerate the charge transfer on the interface of the electrode and the electrolyte, realize the electrocatalytic reaction, directly transfer the pollutants with the anode plate by the action of an electric field for removing, or remove substances (such as OH and ClO) with oxidation activity generated near the anode plate-And other chlorine-containing oxides) and thus has the effects of easy handling, avoidance or reduction of secondary contamination of the chemicals, and rapid reaction.
As a preferred technical solution, the electrolytic cell case further includes: the pretreatment cavity is arranged between the second wastewater outlet pipe and the electrolysis cavity; and the clapboard controls the conduction of the pretreatment cavity and the electrolysis cavity.
The technical effect achieved after the technical scheme is adopted is as follows: and the wastewater enters the pretreatment cavity from the second wastewater outlet pipe for pretreatment, and then enters the electrolysis cavity for electrolysis, and the pretreatment comprises operations such as filtering, pH adjustment or electrolyte adjustment and the like, so that the electrolytic catalytic oxidation effect of the wastewater in the electrolysis cavity is improved.
As a preferred technical solution, the electrochemical purification apparatus further comprises: the screen is arranged in the pretreatment cavity; and/or a dosing hole which is communicated with the pretreatment cavity.
The technical effect achieved after the technical scheme is adopted is as follows: the screen is used for filtering large-particle impurities in the wastewater to prevent the impurities from reducing the electrolysis effect; the medicine adding hole is used for adding electrolyte and adjusting pH, so that a specified product is obtained in the electrolytic catalytic oxidation process, and pollutants in the wastewater are degraded and removed.
As a preferred embodiment, the multi-phase extraction apparatus comprises: an extraction well; and the at least one filtering soil layer is sequentially arranged outside the extraction well along the height direction of the extraction well.
As a preferred technical scheme, the wastewater enters an extraction well for extraction after being filtered by a plurality of filtering soil layers.
As a preferred embodiment, the multi-phase extraction apparatus comprises: the liquid cavity is arranged at the bottom of the extraction well; the gas cavity is arranged in the extraction well and is positioned above the liquid cavity; the first waste water delivery pipe penetrates through the gas cavity and extends into the liquid cavity; the air outlet pipe is communicated with the air cavity.
The technical effect achieved after the technical scheme is adopted is as follows: waste water is located the liquid chamber, the gas that waste water produced or the gas in the soil is located the gas chamber, waste water is taken out to first waste water contact tube, gas outlet duct takes gas out to realize gas-liquid separation, and the extraction of waste water.
As a preferred embodiment, the multi-phase extraction apparatus comprises: a well screen disposed between the liquid chamber and the gas chamber, or disposed within the liquid chamber.
The technical effect achieved after the technical scheme is adopted is as follows: the well screen is used for filtering impurities in the wastewater, and avoids a large amount of impurities from being taken out along with the wastewater to cause the damage of a water pump, thereby facilitating the subsequent filtering step.
As a preferred embodiment, the multiphase separation apparatus further comprises: a multiphase separation tank body; the oil-water filter screen is arranged in the multiphase separation box body and corresponds to the first wastewater discharge pipe; one side of the oil-water filter screen, which is far away from the first wastewater delivery pipe, is an oil-water separation cavity.
The technical effect achieved after the technical scheme is adopted is as follows: the waste water that heterogeneous extraction device exported from first waste water eduction tube is oil water mixture, the profit filter screen is used for further filtering waste water.
As a preferred embodiment, the multiphase separation apparatus further comprises: the plurality of baffles are positioned in the oil-water separation cavity, an oil layer and a water layer are separated between any two adjacent baffles, and the oil layer is positioned on the water layer; wherein the oil outlet pipe is communicated with the oil layer, and the second wastewater delivery pipe is communicated with the water layer.
According to a preferable technical scheme, the wastewater is layered between any two adjacent baffles, the oil outlet pipe extracts liquid in an oil layer, and the second wastewater delivery pipe extracts liquid in a water layer, so that oil-water separation is performed.
As a preferred technical solution, the bio-trickling filter device comprises: at least one microbial degradation layer and a circulating spray assembly communicated with the microbial degradation layer.
The technical effect achieved after the technical scheme is adopted is as follows: the gas led out by the gas outlet pipe contains macromolecular organic pollutants, and the ultraviolet sterilization device can convert the macromolecular organic pollutants into micromolecular pollutants; the spray liquid of the circulating spray assembly provides conditions for the microorganisms of the microbial degradation layer, and the microorganisms mineralize the small molecular pollutants into water and carbon dioxide, so that the effect of deep treatment of the gas is achieved.
In another aspect, the invention provides a multi-phase extraction comprehensive treatment method, comprising: the multiphase extraction device extracts underground water for preliminary filtration, and separates the underground water into waste gas and first wastewater; a multiphase separation device receives the first wastewater and separates the first wastewater into an oil body and second wastewater; an electrochemical purification device purifies the second wastewater; the gas purification device purifies the exhaust gas. Detecting the concentration of ozone in the gas input into the biological trickling filter by an ozone concentration sensor; when the ozone concentration is higher than a preset value, one or both of the following operations are performed: the first operation is that the power of an ultraviolet lamp in the ultraviolet decomposition device is reduced through a power regulator; the second operation is to prolong the temporary storage time of the gas output by the ultraviolet decomposition device in the gas temporary storage tank; so that the ozone concentration in the gas fed to the bio-trickling filter decreases below a preset value.
The technical effect achieved after the technical scheme is adopted is as follows: the multiphase extraction comprehensive treatment method adopts the electrochemical treatment device to treat wastewater, has higher efficiency compared with a biological purification mode, is convenient for discharging waste residues, and does not need to clean a cavity of the device.
In summary, the above embodiments of the present application may have one or more of the following advantages or benefits:
1. the multiphase extraction comprehensive treatment system realizes extraction, gas-liquid separation and impurity filtration of underground wastewater through the multiphase extraction device.
2. The multiphase extraction comprehensive treatment system realizes the advanced treatment of gas through the gas purification device, and the gas purification device couples ultraviolet light catalytic degradation and microbial degradation, so that the treatment efficiency of organic pollutants in waste gas is improved; in addition, the power of the ultraviolet decomposition device is adjusted according to the concentration of ozone input into the biological trickling filter device, and the temporary storage tank for providing space for the automatic decomposition of the ozone is arranged between the biological trickling filter device and the ultraviolet decomposition device, so that the condition that the ozone generated by ultraviolet catalysis damages microorganisms in the biological trickling filter device can be avoided.
3. The multiphase extraction comprehensive treatment system further separates oil and water through the multiphase separation device and further filters impurities.
4. The multiphase extraction comprehensive treatment system realizes the catalytic oxidation of the wastewater through the electrochemical purification device, and has the advantages of high speed, high efficiency and no need of cleaning.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a multi-phase extraction integrated processing system according to a first embodiment of the present invention.
Fig. 2 is a schematic structural view of the electrochemical purification apparatus of fig. 1.
Fig. 3 is an enlarged view of the region I in fig. 2.
Fig. 4 is a schematic diagram of the multi-phase extraction apparatus of fig. 1.
FIG. 5 is a schematic view of the multiphase separation apparatus of FIG. 1.
Fig. 6 is a schematic structural diagram of the ultraviolet decomposition device in fig. 1.
Fig. 7 is a schematic structural view of the bio-trickling filter of fig. 1.
Fig. 8 is a flow chart of a multi-phase extraction comprehensive treatment method according to a second embodiment of the present invention.
Fig. 9 is a detailed flowchart of step S1 in fig. 8.
Fig. 10 is a detailed flowchart of step S2 in fig. 8.
Fig. 11 is a detailed flowchart of step S3 in fig. 8.
Fig. 12 is a detailed flowchart of step S4 in fig. 8.
Description of the main element symbols:
100 is a multi-phase extraction comprehensive treatment system; 110 is a multiphase extraction device; 111 is an air outlet pipe; 112 is a first wastewater outlet pipe; 113 is an extraction well; 114 is a liquid chamber; 115 is a gas cavity; 116 is a well screen; 117a is a first cement slurry layer; 117b is a primary soil layer; 117c is a second cement slurry layer; 117d is bentonite layer; 118 is a submersible pump; 120 is a multiphase separation device; 121 is an oil outlet pipe; 122 is a second wastewater delivery pipe; 123a is an upper baffle plate; 123b is a lower baffle; 124 is a multiphase separation box body; 125 is an oil-water filter screen; 126 is an oil-water separation cavity; 127 is a floating oil collecting tank; 130 is an electrochemical purification device; 131 is an electrolytic cell box body; 131a is a liquid discharge port; 131b is a slag discharge port; 132 is an electrolysis chamber; 133 is an anode plate; 134 is a cathode plate; 135 is a power supply; 135a is a first power line; 135b is a second power line; 136 is a pretreatment cavity; 137 is a clapboard; 138 is a screen; 139 is a medicine adding hole; 140 is a gas purification device; 140a is an ultraviolet decomposition device; 140b is a biological trickling filter; 141 ultraviolet decomposition device shell; 142 is an ultraviolet lamp; 143 is a light collecting plate; 144 is a power regulator; 145 is a gas temporary storage tank; 146 is a biological trickling filter device shell; 147 is a microbial degradation layer; 148 is a circulating spray assembly; 148a is a circulating groove; 148b is a circulating water pump; 148c is a flow meter.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
[ first embodiment ] A method for manufacturing a semiconductor device
Referring to fig. 1, a multi-phase extraction integrated processing system 100 according to an embodiment of the present invention includes: a multi-phase extraction unit 110, a multi-phase separation unit 120, and a contaminant treatment unit. Wherein, heterogeneous extraction device 110 includes: an outlet pipe 111 and a first wastewater discharge pipe 112 for separating and discharging underground wastewater and exhaust gas; the multiphase separation device 120 is connected to the first wastewater discharge pipe 112, and the multiphase separation device 120 includes: an oil outlet pipe 121 and a second wastewater delivery pipe 122 for separating and delivering the oil and water in the first wastewater delivery pipe 112; the pollutant treating device comprises: an electrochemical purification device 130 and a gas purification device 140 for purifying waste water and waste gas, wherein the electrochemical purification device 130 is connected to the second waste water outlet pipe 122, and the gas purification device 140 is connected to the gas outlet pipe 111.
In this embodiment, the electrochemical purification device 130 catalyzes the electrode surface electron transfer and the active material catalytic chemical reaction, for example, by the action of an electric field, to convert the refractory pollutants into small molecule substances or completely mineralize the refractory pollutants into CO2、H2O and other inorganic matters, thereby quickly and effectively purifying the waste water. For wastewater with high salt content and strongly inhibited microbial action or poor biochemistry, the electrochemical method has better purification effect compared with the biological method.
In one particular embodiment, referring to fig. 2-3, electrochemical purification apparatus 130 comprises, for example: the electrolytic cell case 131 is provided with an electrolytic chamber 132 therein for performing electrolytic reaction. Wherein, electrolysis cavity 132 communicates second waste water eduction tube 122, for example, through pump connection between second waste water eduction tube 122 and the electrolytic cell box 131, realizes the switching of second waste water eduction tube 122, reaches the effect that waste water was regularly carried or ration was carried, avoids waste water to continuously carry and leads to electrolytic reaction to carry on incompletely.
Preferably, the electrochemical purification apparatus 130 further includes, for example: at least one anode plate 133, at least one cathode plate 134 and a power source 135, wherein the anode plate 133 and the cathode plate 134 are positioned in the electrolytic chamber 132, and the power source 135 is connected with the anode plate 133 and the cathode plate 134 through leads. For example, the conductive wire includes a first power line 135a and a second power line 135b, the first power line 135a is connected to the positive electrode of the power source 135, the second power line 135b is connected to the negative electrode of the power source 135, the anode plate 133 is connected to the first power line 135a, and the cathode plate 134 is connected to the second power line 135 b. The anode plate 133 and the cathode plate 134 are arranged in parallel, and an electric field is formed between the anode plate 133 and the cathode plate 134, so that oxidation or reduction of pollutants in the wastewater is accelerated, degradation of the pollutants is promoted, and sludge is not generated.
Further, the power source 135 is, for example, a power box.
Preferably, the anode plates 133 and the cathode plates 134 may be provided in plurality and arranged longitudinally, and arranged in the electrolytic chamber 132 in sequence and alternately at intervals, so as to improve the effect of the electrolytic reaction. The first power line 135a and the second power line 135b are transversely disposed above the electrolytic cavity 132, the top of all the anode plates 133 is connected with the first power line 135a, the top of all the cathode plates 134 is connected with the second power line 135b, and the power source 135 controls the on-off of all the anode plates 133 and the cathode plates 134 at the same time, so that the electrochemical purification device 130 can normally work by controlling the on-off of the power source 135 at regular time without the management of a specially-assigned person.
Further, the anode plate 133 is, for example, PbO2the/Ti plate and the cathode plate 134 are, for example, titanium mesh, which is not limited herein.
The anode plates 133 and the cathode plates 134 are detachably connected with the lead, that is, the anode plates 133 and the cathode plates 134 in the electrolysis cavity 132 are added in a modularized manner, and the number of the anode plates 133 and the cathode plates 134 can be changed according to requirements.
In a particular embodiment, the cell housing 131 further includes, for example: and a pretreatment chamber 136 disposed between the second wastewater discharge pipe 122 and the electrolysis chamber 132. For example, the two sides of the top of the pretreatment chamber 136 are respectively connected to the second wastewater outlet 122 and the electrolytic chamber 132, and wastewater introduced from the second wastewater outlet 122 into the electrolytic cell case 131 is pretreated in the pretreatment chamber 136, for example, by adding electrolyte, adjusting pH, or filtering impurities.
Preferably, the electrolytic cell case 131 further includes, for example: and the partition plate 137 is arranged at an opening communicated between the pretreatment cavity 136 and the electrolysis cavity 132, wherein the partition plate 137 can be opened and closed to control the connection or disconnection of the pretreatment cavity 136 and the electrolysis cavity 132, so that the quantitative or timed delivery of the wastewater is realized.
Preferably, the electrochemical purification apparatus 130 further includes, for example: a screen 138 disposed within the pre-treatment chamber 136. For example, the screen 138 is disposed below the partition 137 and extends downward to the bottom of the pretreatment chamber 136 for filtering larger impurity particles, so as to prevent the impurity particles from entering the electrolytic chamber 132 and affecting the normal operation of the electrolytic reaction.
Preferably, the electrochemical purification apparatus 130 further includes, for example: and the dosing hole 139 is communicated with the pretreatment cavity 136. Wherein, the medicine adding hole 139 can be arranged at one side of the electrolytic cell box body 131 near the bottom for adding electrolyte or adding acid and alkali to change the pH value. For example, the pH meter is used for monitoring in real time, liquid caustic soda with the mass fraction of about 30% is added, the pH value is controlled to be 8.0-9.0, and a certain amount of electrolyte is added according to the parameter control condition of a subsequent power supply 135; the treated wastewater is then quantitatively introduced into the electrolysis chamber 132.
Further, water loses electrons and OH is generated on the surface of the anode plate 133 by the action of the anode plate 133 and the cathode plate 134. The anode plate 133 has thereon a Metal Oxide (MO)X) Adsorption of OH on the Metal Oxide (MO)X) A surface. Two active oxygen species are present on the surface of the anode plate 133, including: physical adsorption of MOX(. OH), chemisorption MOX+1. Wherein MO isX(. OH) plays a major role in oxidation, belonging to direct oxidation; and active oxygen MOX+1Can only selectively degrade pollutants and can not be completely mineralized, and can generate strong oxidizing substances such as OH and H in the electrolytic process2O2、O3And the like, and the organic pollutants are degraded by utilizing the strong oxidizing substances, belonging to indirect oxidation. Under the synergistic action of the direct oxidation and the indirect oxidation, macromolecular organic pollutants in high-concentration underground water are oxidized and degraded into micromolecular pollutants and further mineralized into water and CO2And the effect of underground water advanced treatment is achieved.
Preferably, the electrolytic cell case 131 further includes, for example, a liquid discharge port 131a and a slag discharge port 131b, the liquid discharge port 131a being located, for example, at the other end of the electrolytic cell case 131 opposite to the second wastewater discharge pipe 122, and the slag discharge port 131b being located, for example, at the bottom of the electrolytic cell case 131. Wherein the electrolytically purified waste water can be discharged from the liquid discharge port 131 a; the waste water with SS is easy to be adsorbed on the electrode due to electrostatic action in the treatment process to form dirt, the treatment efficiency is influenced after a period of time, and the dirt generated by cleaning can be discharged from the slag discharge port 131b after the dirt is irregularly cleaned.
In one particular embodiment, referring to fig. 4, a multi-phase extraction apparatus 110 comprises: an extraction well 113; and at least one filtering soil layer is sequentially arranged outside the extraction well 113 along the height direction of the extraction well 113. For example, the filtering soil layer is a gravel filter layer which can filter water seeped from the underground, and the gravel gap is large and has the function of water storage.
Preferably, at least one fixed layer, such as at least one cement slurry layer and/or native soil layer 117b, may be arranged outside the extraction well 113, for example, between the gravel pack and the horizon. For example, the extraction well 113 includes, from top to bottom, a first cement slurry layer 117a, a native soil layer 117b, and a second cement slurry layer 117c, which is not limited herein.
Preferably, a bentonite layer 117d may be further provided outside the extraction well 113 to stabilize the extraction well 113, wherein the bentonite layer 117d may be provided between the gravel pack and the second cement slurry layer 117 c. In addition, sand filling can be arranged below the gravel filter layer, the bottom end of the extraction well 113 is surrounded by the sand filling, a buffering effect is achieved, and the extraction well 113 is prevented from being damaged due to friction.
In one particular embodiment, the multi-phase extraction apparatus 110 includes, for example: a liquid chamber 114 arranged at the bottom of the extraction well 113; a gas chamber 115 is provided in the extraction well 113 above the liquid chamber 114. Wherein, the first wastewater outlet pipe 112 passes through the gas cavity 115 and extends into the liquid cavity 114 for pumping the wastewater, and the wastewater is in an oil-water mixed state; the outlet pipe 111 communicates with a gas chamber 115 for extracting the exhaust gas.
Preferably, the multi-phase extraction apparatus 110 further comprises, for example: a well screen 116 is disposed between the liquid chamber 114 and the gas chamber 115, or within the liquid chamber 114. For example, the upper end of the well screen 116 is flush with the level of the fluid chamber 114 to prevent impurities and foreign matter in the extraction well 113 from entering the fluid chamber 114.
Further, the multi-phase extraction apparatus 110, for example, further includes: and a submersible pump 118 disposed in the liquid chamber 114 and communicating with one end of the first waste water discharge pipe 112 extending into the liquid chamber 114 for pumping out waste water.
Referring to fig. 1, the first waste water outlet pipe 112 is provided at an end thereof extending out of the multiphase extraction unit 110, for example, with a lift pump 150 for lifting waste water to the multiphase separation unit 120. The end of the outlet pipe 111 extending out of the multiphase extraction device 110 is provided with, for example, a liquid ring pump for pumping the exhaust gas and guiding it to the gas purification device 140.
In a particular embodiment, referring to fig. 5, the multiphase separation device 120, for example, further comprises: and a multiphase separator tank 124 connected to the oil outlet pipe 121, the second wastewater delivery pipe 122 and the first wastewater delivery pipe 112. The second wastewater outlet pipe 122 and the first wastewater outlet pipe 112 are located at two opposite sides of the multiphase separation tank 124, for example, and after the wastewater in the first wastewater outlet pipe 112 is subjected to oil-water separation, water can directly flow out from the second wastewater outlet pipe 122.
Preferably, the first waste water delivery pipe 112 has a height greater than that of the second waste water delivery pipe 122. For example, the second waste water outlet pipe 122 may be located on a side of the multi-phase separation tank 124 near the bottom surface to prevent water from being accumulated in the multi-phase separation tank 124 and being discharged.
In a particular embodiment, the multi-phase separation apparatus 120 further comprises, for example: the oil-water screen 125 is disposed in the multiphase separation tank 124 and corresponds to the first wastewater discharge pipe 112, i.e., the oil-water screen 125 is disposed on a side of the multiphase separation tank 124 close to the first wastewater discharge pipe 112. The top of the oil-water screen 125 is higher than the first wastewater outlet pipe 112, so that the first wastewater introduced by the first wastewater outlet pipe 112 does not pass through the upper side of the oil-water screen, resulting in unfiltered first wastewater.
Further, one side of the oil-water filter screen 125 away from the first wastewater outlet pipe 112 is an oil-water separation cavity 126, and after solid impurities are filtered by the oil-water filter screen 125 by wastewater entering the multiphase separation tank 124 from the first wastewater outlet pipe 112, oil-water separation is performed, so that the purification effect is improved, and excessive impurity deposition in the oil-water separation cavity 126 is avoided. The bottom end of the oil-water filter 125 is connected to the bottom of the multiphase separation tank 124, and the top end of the oil-water filter 125 is higher than the first wastewater discharge pipe 112, so that all wastewater entering the multiphase separation tank 124 from the first wastewater discharge pipe 112 can be filtered.
In a particular embodiment, the multi-phase separation apparatus 120 further comprises, for example: and a plurality of baffles located in the oil-water separation chamber 126, wherein the baffles are vertically arranged for guiding the wastewater. And any two adjacent baffles are used for separating an oil layer and a water layer.
Preferably, the plurality of baffles include, for example, an upper baffle 123a, a gap is provided between a bottom end of the upper baffle 123a and a bottom plate of the multiphase separation tank 124, and a top end of the upper baffle 123a is higher than an allowable maximum liquid level of the oil-water separation chamber 126. After the oil and water in the wastewater are layered, the oil layer is blocked by the upper baffle 123a, and is always positioned on one side of the upper baffle 123a away from the second wastewater outlet pipe 122 and is higher than the gap; the water layer is positioned below the oil layer and communicates with the gap so that water can flow from the gap toward the upper baffle 123a toward one side of the second waste water delivery pipe 122.
Further, the plurality of baffles includes, for example, two upper baffles 123a and a lower baffle 123b disposed between the two upper baffles 123 a. For example, the lower baffle 123b is connected to the bottom plate of the multiphase separation tank 124, and the top end of the lower baffle 123b is higher than the bottom end of the upper baffle 123 a. The wastewater is blocked by the lower baffle 123b during the flowing process, flows to between the two upper baffles 123a, and is subjected to a second oil-water separation, that is, the oil layer is located between the two upper baffles 123a, and the water layer flows from below the upper baffles 123a to the second wastewater outlet pipe 122.
Still further, the oil outlet pipe 121 communicates with the oil layer, and the second wastewater delivery pipe 122 communicates with the water layer. For example, the oil outlet pipe 121 is located at the top of the multiphase separation tank 124 and is communicated to the oil layer between the two upper baffles 123 a; when the multiphase separation apparatus 120 includes a plurality of the top dams 123a, the oil lines 121 communicate the oil layers between all adjacent top dams 123a, or one oil line 121 for each oil layer, and a plurality of oil lines 121 extend out of the multiphase separation tank 124.
Preferably, in conjunction with fig. 1 and 5, the multiphase separation device 120 further comprises, for example: a floating oil collection tank 127. Wherein, the oil outlet pipe 121 pumps the floating oil to the floating oil collecting tank 127, for example, by a liquid ring pump, so as to realize the centralized treatment of hazardous wastes.
Preferably, the second waste water outlet pipe 122 guides water to the electrochemical purification apparatus 130, for example, by a lift pump 150.
In a specific embodiment, referring to fig. 1, 6 and 7, the gas purification apparatus 140 includes, for example: an ultraviolet decomposition device 140a and/or a bio-trickling filter 140 b. For example, the ultraviolet decomposition device 140a is communicated with the plurality of extraction devices 110 through an air outlet pipe, and the bio-trickling filter 140b is communicated with one side of the ultraviolet decomposition device 140a away from the plurality of extraction devices 110. The ultraviolet decomposition device 140a is used for degrading macromolecular organic pollutants in the waste gas led out from the gas outlet pipe and converting the macromolecular organic pollutants into micromolecular pollutants; the bio-trickling filter 140b is used to solidify the small molecule contaminants into carbon dioxide and water.
Preferably, the ultraviolet decomposition device 140a includes, for example: an ultraviolet decomposition device casing 141, a plurality of ultraviolet lamps 142, a plurality of light collecting plates 143, and a catalyst (not shown), wherein the ultraviolet lamps 142 are disposed on the upper side or the lower side of the ultraviolet decomposition device casing 141; a plurality of light collecting plates 143 which are parallel to each other are sequentially staggered and arranged at intervals between the gas inlet and the gas outlet of the ultraviolet decomposition device shell 141, face the gas inlet, and are used for collecting ultraviolet light; the catalyst is arranged at the gas inlet and/or the gas outlet and is used for catalyzing the macromolecular organic pollutants to be converted into micromolecular pollutants.
Further, the ultraviolet decomposition device 140a includes, for example: a power regulator 144. Wherein, the waste gas led out by the air outlet pipe can generate high-concentration ozone after being decomposed by the ultraviolet decomposition device 140 a; power regulator 144 can reduce the ozone concentration by reducing the power of uv decomposition device 140a to prevent microorganisms in biotrickling filter 140b from being inactivated by ozone.
Still further, the ultraviolet decomposition device 140a includes, for example: gaseous jar 145 of keeping in, the intercommunication is located gas outlet and bio-trickling filter device 140b for the tail gas that the storage has ozone makes ozone self-degradation, further reduces the concentration of ozone, avoids ozone to the harm of microorganism, makes bio-trickling filter device 140b can normal operating. In addition, the gas temporary storage tank 145 can quantitatively convey the tail gas to the bio-trickling filter 140b through a flow meter and an air pump, so that the waste gas treatment capacity of the bio-trickling filter 140b in unit time is kept constant, and the curing effect of the bio-trickling filter 140b is improved.
Preferably, the bio-trickling filter 140b comprises, for example: a housing 146 of the bio-trickling filter, at least one biodegradable layer 147 and a circulating spray assembly 148 communicating with said biodegradable layer 147. For example, the biodegradable layer 147 is disposed in the middle of the housing 146, and the waste gas from the uv decomposition device 140a is introduced from the bottom of the housing 146, passes through the biodegradable layer 147, is solidified into carbon dioxide and water by microorganisms, and is discharged from the top of the housing 146; the circulating spray assembly 148 is communicated with the upper end and the lower end of the biological trickling filter device shell 146, and spray liquid is introduced above the microbial degradation layer 147 and is recovered from the bottom of the biological trickling filter device shell 146. The spray liquid provides water, nutrient substances, proper temperature and pH value for the microorganisms, and provides conditions for the microorganisms to perform the solidification of tail gas; and the spray liquid can keep the microbial degradation layer 147 free.
Further, the circulation shower assembly 148 includes, for example, a circulation tank 148a, a circulation water pump 148b, and a flow meter 148 c. Wherein the spray liquid is pumped out from the circulating groove 148a through the circulating water pump 148b, is introduced above the bio-trickling filter device shell 146, flows back to the circulating groove 148a from the lower part of the bio-trickling filter device shell 146 after passing through the microbial degradation layer 147, and is reused after being filtered to adjust the temperature, adjust the pH and/or add nutrients.
[ second embodiment ]
Referring to fig. 8, a multiphase extraction comprehensive treatment method according to a second embodiment of the present invention includes:
step S1: the multiphase extraction device 110 extracts groundwater for preliminary filtration, and separates the groundwater into waste gas and first wastewater;
step S2: a multiphase separation device 120 receives the first wastewater and separates the first wastewater into oil bodies and second wastewater;
step S3: the electrochemical purification device 130 purifies the second wastewater;
step S4: the gas purification device 140 purifies the exhaust gas.
In step S1, the off-gas and the first waste water are separated and discharged, the off-gas is introduced into the gas purification apparatus 140, the first waste water is introduced into the multi-phase separation apparatus 120, and accordingly, after step S1 is completed, step S2 and step S4 may be performed simultaneously.
In a specific embodiment, with reference to fig. 4 and 9, step S1 includes, for example:
step S11: filtering pollutants in the underground water through a filtering soil layer, and storing water;
step S12: after the underground water flows into the extraction well 113, further filtering impurities in the underground water through a well screen 116 to obtain the first wastewater;
step S13: the first wastewater is led out of the extraction well 113 along a first wastewater outlet pipe 112 through a submersible pump 118;
step S14: the waste gas is led out of the extraction well 113 along the outlet pipe 111 by a liquid ring pump.
Preferably, in step S11, the groundwater infiltrated from the subsurface is sequentially filtered and stored through a plurality of the filter soil layers. For example, the groundwater passes through a first cement slurry layer 117a, a primary soil layer 117b, a second cement slurry layer 117c, and a bentonite layer 117d in this order, and is finally stored in a gravel pack having a large gap.
Preferably, in step S12, the groundwater in the gravel pack flows into an extraction well 113, the first wastewater is obtained through a well screen 116, and the first wastewater is stored in a liquid chamber 114 below the well screen 116; the impurities filtered through the well screen 116 remain above the well screen 116; the exhaust gas passes upwardly through the well screen 116 and into the gas chamber 115 above the well screen 116.
Preferably, in step S13, the first wastewater delivery pipe 112 communicates with the submersible pump 118 and passes through the well screen 116 and the gas chamber 115 in turn to protrude out of the top of the extraction well 113, thereby extracting the first wastewater.
Preferably, in step S14, a liquid ring pump is located outside the extraction well 113 and communicates with the gas chamber 115 through the gas outlet pipe 111, thereby extracting the exhaust gas.
Wherein, the step S13 and the step S14 can be performed simultaneously.
In a specific embodiment, with reference to fig. 5 and 10, step S2 includes, for example:
step S21: the first wastewater is introduced from one side of the multiple phase separation tank body through a first wastewater outlet pipe 112, filtered by an oil-water filter screen 125 and then enters an oil-water separation cavity 126;
step S22: the first wastewater passes through the upper baffle 123a and the lower baffle 123b which are arranged in a staggered manner to realize multiple times of oil-water separation;
step S23: the oil layer above the first wastewater is led out along the oil outlet pipe 121 through a liquid ring pump and enters the floating oil collecting tank 127;
step S24: the water layer under the first waste water is discharged from the second waste water discharge pipe 122.
Preferably, in step S21, the first waste water is lifted by a lift pump on the first waste water discharge pipe 112 and introduced into the multiphase separation tank 124.
Further, the oil-water filter 125 is used for filtering impurities except oil-water in the first wastewater. The first wastewater may pass through the multi-layer oil-water filter 125 to improve the filtering effect, which is not limited herein.
Preferably, in step S22, the first wastewater passes through the oil-water filter 125 or first contacts the first upper baffle 123a, the first wastewater performs a first oil-water separation on the side of the first upper baffle 123a facing the oil-water filter 125, the oil stays on the side of the first upper baffle 123a facing the oil-water filter 125, and the water flows under the first upper baffle 123a and sequentially contacts the first lower baffle 123b and the second upper baffle 123 a; between the first upper baffle 123a and the second upper baffle 123a, the first wastewater undergoes a second oil-water separation, the oil stays on the side of the second upper baffle 123a facing the oil-water filter screen 125, and the water flows … … under the second upper baffle 123a, which is not described in detail here.
Preferably, in steps S23 and S24, the first wastewater undergoes the last oil-water separation to obtain second wastewater, and the second wastewater flows under the corresponding upper baffle 123a and is discharged from the second wastewater discharge pipe 122; the oil layer on the side of each upper baffle 123a facing the oil-water screen 125 is communicated with the floating oil collecting tank 127 through the oil outlet pipe 121, and all the oil layers can be pumped out by opening the liquid ring pump on the oil outlet pipe 121.
In a specific embodiment, with reference to fig. 1-2 and 11, step S3 includes, for example:
step S31: introducing the second wastewater into a pretreatment cavity 136 of the electrochemical purification device 130 for filtering, adjusting the pH and/or adding electrolyte;
step S32: introducing the treated second wastewater into an electrolysis chamber 132, and electrifying the anode plate 133 and the cathode plate 134 for electrolysis;
step S33: the electrolyzed second wastewater is discharged from the liquid discharge port 131 a;
step S34: the waste slag generated by electrolysis is discharged from the slag discharge port 131 b.
Preferably, in step S31, the second wastewater is introduced into the pretreatment chamber 136 by a lift pump, and is filtered by a screen 138 to further remove impurities. At this time, the partition 137 between the pretreatment cavity 136 and the electrolysis cavity 132 is closed, the electrolyte is added from the drug adding hole 139, and the pH is adjusted, so that the second wastewater has a better electrolytic decontamination effect after entering the electrolysis cavity 132.
Preferably, in step S32, after the second wastewater is pretreated, the partition 137 is opened, the second wastewater is periodically and quantitatively delivered into the electrolytic chamber 132, when the second wastewater in the electrolytic chamber 132 reaches the capacity threshold, the partition 137 is closed, and step S31 is repeated.
Further, when the electrolytic reaction of the second wastewater in the electrolytic chamber 132 is completed, the step S33 is performed, and the second wastewater is discharged from the liquid discharge port 131 a; when all the second wastewater in the electrolytic chamber 132 is discharged, performing step S34 to discharge waste residues; finally, the step S32 is repeated, and the partition 137 is opened again to introduce the second wastewater into the pretreatment chamber 136.
In a specific embodiment, with reference to fig. 6, 7, and 12, step S4 includes, for example:
step S41: introducing the exhaust gas to an ultraviolet decomposition device 140 a;
step S42: converting macromolecular pollutants in the waste gas into micromolecular pollutants through ultraviolet light and a catalyst; reducing the concentration of ozone in the exhaust gas by a power conditioner 144;
step S43: introducing the waste gas treated by the ultraviolet decomposition device 140a into a temporary gas storage tank 145, and introducing the waste gas into a biotrickling filter device 140b after the ozone is self-degraded;
step S44: the exhaust gas passes through the plurality of microbial degradation layers 147, and the circulating spray assembly 148 sprays the microbial degradation layers 147, and the exhaust gas is discharged after biodegradation.
Preferably, in step S42, the exhaust gas passes through the plurality of light collecting plates 143 in sequence under the action of the catalyst; the light collecting plate 143 collects the ultraviolet light of the ultraviolet lamps 142, thereby effectively catalytically decomposing the macromolecular pollutants in the exhaust gas.
Further, the power regulator 144 regulates the power of the ultraviolet lamp 142, thereby changing the concentration of ozone in the exhaust gas and preventing the ozone from affecting the degradation of the microorganisms in the bio-trickling filter device 140 b.
Preferably, in step S43, the waste gas is controlled by the air pump to be output from the gas temporary storage tank 145 to the bio-trickling filter device 140b at regular time or in fixed quantity, so that the concentration of ozone in the waste gas can be reduced to a proper range, and further the ozone is prevented from affecting the activity of microorganisms in the bio-trickling filter device 140 b.
Preferably, in step S44, the circulating spray assembly 148 sprays a spray solution having water, nutrients, and appropriate temperature and pH to the plurality of microbial degradation layers 147 to provide conditions for the solidification of the off-gas by the microorganisms.
Further, the circulating spray assembly 148 recovers the used spray liquid to the circulating tank 148a, manually adjusts the temperature and pH of the spray liquid in the circulating tank 148a, and adds nutrient substances, thereby reusing the spray liquid; the spray liquid in the circulation tank 148a is re-delivered to the upper part of the microbial degradation layer 147 through the circulation water pump 148b to be sprayed.
Furthermore, the waste gas sequentially passes through the plurality of microbial degradation layers 147 from bottom to top, and pollutants in the waste gas can be solidified into carbon dioxide and water; and the waste gas is converted into clean gas and then discharged.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (10)

1. A multi-phase extraction integrated processing system, comprising:
a multiphase extraction apparatus comprising: an air outlet pipe and a first wastewater delivery pipe;
a multiphase separation device in communication with the first wastewater delivery line, the multiphase separation device comprising: an oil outlet pipe and a second wastewater delivery pipe;
a pollutant treating device comprising: an electrochemical purification device and a gas purification device;
the electrochemical purification device is communicated with the second wastewater outlet pipe, and the gas purification device is communicated with the gas outlet pipe;
the gas purification device comprises an ultraviolet decomposition device and a biological trickling filter device; the ultraviolet decomposition device is used for preliminarily degrading organic pollutants in the waste gas led out from the gas outlet pipe through ultraviolet light catalysis, so that the molecular weight of the pollutants is reduced; the biological trickling filter device solidifies the preliminarily degraded micromolecule pollutants into carbon dioxide and water through microbial degradation; a power regulator for regulating the power of the ultraviolet lamp is arranged in the ultraviolet decomposition device; the power regulator regulates the power of the ultraviolet lamp; a gas temporary storage tank is connected between the ultraviolet decomposition device and the biological trickling filtration device; the gas temporary storage tank is used for temporarily storing the gas output by the ultraviolet decomposition device.
2. The integrated multi-phase extraction treatment system of claim 1, wherein the electrochemical purification apparatus comprises:
the electrolytic cell box body is provided with an electrolytic cavity, and the electrolytic cavity is communicated with the second wastewater outlet pipe;
at least one anode plate and at least one cathode plate, the anode plate and the cathode plate being located in the electrolysis chamber;
and the power supply is connected with the anode plate and the cathode plate through leads.
3. The integrated multi-phase extraction treatment system of claim 2, wherein the electrolytic cell housing further comprises:
the pretreatment cavity is arranged between the second wastewater outlet pipe and the electrolysis cavity;
and the clapboard controls the conduction of the pretreatment cavity and the electrolysis cavity.
4. The integrated multi-phase extraction treatment system of claim 3, wherein the electrochemical purification apparatus further comprises:
the screen is arranged in the pretreatment cavity;
and/or a dosing hole which is communicated with the pretreatment cavity.
5. The integrated multi-phase extraction treatment system according to any one of claims 1 to 4, wherein the multi-phase extraction apparatus comprises:
an extraction well;
and the at least one filtering soil layer is sequentially arranged outside the extraction well along the height direction of the extraction well.
6. The integrated multi-phase extraction processing system as recited in claim 5, wherein the multi-phase extraction device comprises:
the liquid cavity is arranged at the bottom of the extraction well;
the gas cavity is arranged in the extraction well and is positioned above the liquid cavity;
a well screen disposed between the liquid chamber and the gas chamber or within the liquid chamber;
the first waste water delivery pipe penetrates through the gas cavity and extends into the liquid cavity; the air outlet pipe is communicated with the air cavity.
7. The integrated multi-phase extraction treatment system according to any one of claims 1 to 4, wherein the multi-phase separation apparatus further comprises:
a multiphase separation tank body;
the oil-water filter screen is arranged in the multiphase separation box body and corresponds to the first wastewater discharge pipe;
one side of the oil-water filter screen, which is far away from the first wastewater delivery pipe, is an oil-water separation cavity.
8. The integrated multi-phase extraction treatment system of claim 7, wherein the multi-phase separation unit further comprises:
the plurality of baffles are positioned in the oil-water separation cavity, an oil layer and a water layer are separated between any two adjacent baffles, and the oil layer is positioned on the water layer;
wherein the oil outlet pipe is communicated with the oil layer, and the second wastewater delivery pipe is communicated with the water layer.
9. The multiphase extraction integrated processing system of claim 1, wherein the bio-trickling filter comprises: at least one microbial degradation layer and a circulating spray assembly communicated with the microbial degradation layer.
10. A multi-phase extraction comprehensive treatment method is characterized by comprising the following steps:
the multiphase extraction device extracts underground water for preliminary filtration, and separates the underground water into waste gas and first wastewater;
a multiphase separation device receives the first wastewater and separates the first wastewater into an oil body and second wastewater;
an electrochemical purification device purifies the second wastewater;
a gas purification device purifying the exhaust gas; detecting the concentration of ozone in the gas input into the biological trickling filter by an ozone concentration sensor; when the ozone concentration is higher than a preset value, one or both of the following operations are performed: the first operation is that the power of an ultraviolet lamp in the ultraviolet decomposition device is reduced through a power regulator; the second operation is to prolong the temporary storage time of the gas output by the ultraviolet decomposition device in the gas temporary storage tank; so that the ozone concentration in the gas fed to the bio-trickling filter decreases below a preset value.
CN202111294332.1A 2021-11-03 2021-11-03 Multiphase extraction comprehensive treatment system and method Pending CN114105378A (en)

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Application Number Priority Date Filing Date Title
CN202111294332.1A CN114105378A (en) 2021-11-03 2021-11-03 Multiphase extraction comprehensive treatment system and method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111294332.1A CN114105378A (en) 2021-11-03 2021-11-03 Multiphase extraction comprehensive treatment system and method

Publications (1)

Publication Number Publication Date
CN114105378A true CN114105378A (en) 2022-03-01

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Application Number Title Priority Date Filing Date
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Country Status (1)

Country Link
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