CN216639159U

CN216639159U - Multiphase extraction comprehensive treatment system

Info

Publication number: CN216639159U
Application number: CN202122671890.7U
Authority: CN
Inventors: 吕伯昇; 史学儒; 王家德; 孙永强; 邵俊捷; 吴骏
Original assignee: Zhejiang University of Technology ZJUT
Current assignee: Zhejiang University of Technology ZJUT
Priority date: 2021-11-03
Filing date: 2021-11-03
Publication date: 2022-05-31
Anticipated expiration: 2031-11-03

Abstract

The utility model discloses a multi-phase extraction comprehensive treatment system, which comprises: a multiphase extraction apparatus comprising: an air outlet pipe and an oil-water delivery pipe; multiphase separation device, intercommunication profit eduction tube, multiphase separation device includes: an oil outlet pipe and a water outlet pipe; a pollutant treating device comprising: an electrochemical purification device and a gas purification device; the electrochemical purification device is communicated with the water outlet pipe, and the gas purification device is communicated with the gas outlet pipe. The utility model solves the problems of low efficiency and long time consumption of biological method for treating pollutant wastewater.

Description

Multiphase extraction comprehensive treatment system

Technical Field

The utility model relates to the field of pollution treatment, in particular to a multiphase extraction comprehensive treatment system.

Background

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.

SUMMERY OF THE UTILITY MODEL

Therefore, the embodiment of the utility model provides a multi-phase extraction comprehensive treatment system, which effectively solves the problems of low efficiency and long time consumption of pollutant wastewater treatment by a biological method.

The utility model provides a multi-phase extraction comprehensive treatment system, which comprises: a multiphase extraction apparatus comprising: an air outlet pipe and an oil-water delivery pipe; multiphase separation device, intercommunication profit eduction tube, multiphase separation device includes: an oil outlet pipe and a water outlet pipe; a pollutant treating device comprising: an electrochemical purification device and a gas purification device; the electrochemical purification device is communicated with the water 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; 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.

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.

In a preferred embodiment, the electrochemical purification apparatus comprises: the electrolytic cell box body is provided with an electrolytic cavity which is communicated with the water 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 charge transfer on the interface of an electrode and an electrolyte, realize electrocatalytic reaction, directly transfer and remove pollutants with the anode plate by using the action of an electric field, 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.

In a preferred embodiment, the electrolytic cell case further includes: the pretreatment cavity is arranged between the water 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 water outlet pipe for pretreatment, and then enters the electrolysis cavity for electrolysis, wherein the pretreatment comprises operations of filtering, pH adjustment or electrolyte and the like, and is used for improving the electrolytic catalytic oxidation effect of the wastewater in the electrolysis cavity.

In a preferred embodiment, 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.

In 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.

The technical effect achieved after the technical scheme is adopted is as follows: and the wastewater enters the extraction well after being filtered by the plurality of filtering soil layers for extraction.

In 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 oil-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: the waste water is located the liquid chamber, and the gas that waste water produced or the gas in the soil is located the gas chamber, the profit eduction tube is taken waste water out, the outlet duct is taken gas out to realize gas-liquid separation, and the extraction of waste water.

In 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, so that a large amount of impurities are prevented from being taken out along with the wastewater to cause damage to a water pump, and subsequent filtering steps are facilitated.

In a preferred embodiment, the multiphase separation device further comprises: a multiphase separation tank body; the oil-water filter screen is arranged in the multiphase separation box body and corresponds to the oil-water outlet pipe; and an oil-water separation cavity is arranged on one side of the oil-water filter screen, which is far away from the oil-water delivery pipe.

The technical effect achieved after the technical scheme is adopted is as follows: the waste water that heterogeneous extraction device exported from the profit eduction tube is oil water mixture, the profit filter screen is used for further filtering waste water.

In a preferred embodiment, the multiphase separation device 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 communicates the oil layer, the outlet pipe communicates the water layer.

The technical effect achieved after the technical scheme is adopted is as follows: waste water is in arbitrary two adjacent the layering between the baffle, the liquid of oil production pipe extraction oil reservoir, the outlet pipe extraction the liquid of water layer to carry out oil-water separation.

In a preferred aspect, the biotrickling 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 summary, the above technical solutions of the present application may have one or more of the following advantages or beneficial effects:

1. the multiphase extraction comprehensive treatment system realizes the extraction of low wastewater, gas-liquid separation and impurity filtration through the multiphase extraction device.

2. The multiphase extraction comprehensive treatment system further separates oil and water through the multiphase separation device and further filters impurities.

3. 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.

4. The multiphase extraction comprehensive treatment system realizes the advanced treatment of gas through the gas purification device.

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 comprehensive treatment system according to an embodiment of the present invention.

Fig. 2 is a block schematic diagram of the multiphase extraction integrated processing system of fig. 1.

Fig. 3 is a schematic structural view of the electrochemical purification apparatus of fig. 1.

Fig. 4 is an enlarged view of the region I in fig. 3.

Fig. 5 is a schematic diagram of the multi-phase extraction apparatus of fig. 1.

FIG. 6 is a schematic diagram of the multiphase separation apparatus of FIG. 1.

Fig. 7 is a schematic structural diagram of the ultraviolet decomposition device in fig. 1.

Fig. 8 is a schematic structural view of the bio-trickling filter of fig. 1.

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 an oil-water delivery 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 paste 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 water outlet 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.

Referring to fig. 1-2, 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 an oil-water delivery pipe 112 for separating and delivering underground wastewater and gas; the multiphase separation device 120 is connected to the oil-water outlet pipe 112, and the multiphase separation device 120 includes: an oil outlet pipe 121 and a water outlet pipe 122 for separating and discharging the oil and water in the oil-water discharge pipe 112; the pollutant treating device comprises: and the electrochemical purification device 130 and the gas purification device 140 are used for purifying wastewater and gas, wherein the electrochemical purification device 130 is communicated with the water outlet pipe 122, and the gas purification device 140 is communicated with 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. 3-4, 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 outlet pipe 122, for example, connects through the pump between outlet pipe 122 and the electrolytic cell box 131, realizes the switching of outlet pipe 122, reaches the effect that waste water was regularly or quantitative transported, avoids waste water to continuously transport and leads to the electrolytic reaction to carry out 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 the pretreatment cavity 136 is arranged between the water outlet pipe 122 and the electrolysis cavity 132. For example, the two sides of the top of the pretreatment chamber 136 are respectively connected to the water outlet pipe 122 and the electrolytic chamber 132, and the wastewater introduced into the electrolytic cell case 131 through the second wastewater outlet pipe 122 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 MO_X(. OH), chemisorption MO_X+1. Wherein MO is_X(. OH) plays a major role in oxidation, belonging to direct oxidation; and active oxygen MO_X+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. In the direct oxidation andunder the synergistic action of 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 a liquid discharge port 131a and a slag discharge port 131b, for example, the liquid discharge port 131a is located at the other end of the electrolytic cell case 131 opposite to the water outlet pipe 122, and the slag discharge port 131b is located at the bottom of the electrolytic cell case 131, for example. 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. 5, 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 layer and/or native soil layer 117b, is also arranged outside the extraction well 113, for example, between the gravel pack and the horizon. For example, the extraction well 113 includes a first cement slurry layer 117a, a native soil layer 117b, and a second cement slurry layer 117c from top to bottom, 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. The oil-water outlet pipe 112 passes through the gas cavity 115 and extends into the liquid cavity 114 for pumping out the waste water, wherein the waste water is in an oil-water mixing state; the outlet pipe 111 communicates with a gas chamber 115 for extracting 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 the submersible pump 118 is arranged in the liquid cavity 114 and is communicated with one end of the oil-water leading-out pipe 112 extending into the liquid cavity 114 for pumping the wastewater out.

Referring to fig. 1, the end of the oil/water discharge pipe 112 extending out of the multiphase extraction device 110 is provided with, for example, a lift pump 150 for lifting the wastewater to the multiphase separation device 120. The end of the gas outlet pipe 111 extending out of the multiphase extraction unit 110 is provided with, for example, a liquid ring pump for pumping out the gas and guiding it to the gas purification unit 140.

In a particular embodiment, referring to fig. 6, the multiphase separation device 120, for example, further comprises: and the multiphase separation tank 124 is connected with the oil outlet pipe 121, the water outlet pipe 122 and the oil-water delivery pipe 112. The water outlet pipe 122 and the oil-water outlet pipe 112 are located on two opposite sides of the multiphase separation tank 124, for example, after the wastewater in the oil-water outlet pipe 112 is subjected to oil-water separation, water can directly flow out from the water outlet pipe 122.

Preferably, the height of the oil and water outlet pipe 112 is greater than that of the water outlet pipe 122. For example, the 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 unable to be discharged.

In a particular embodiment, the multi-phase separation apparatus 120 further comprises, for example: the oil-water filter 125 is disposed in the multiphase separation tank 124 and corresponds to the oil-water outlet pipe 112, i.e., the oil-water filter 125 is disposed on a side of the multiphase separation tank 124 close to the oil-water outlet pipe 112, and the oil-water filter 125 is parallel to a side of the oil-water outlet pipe 112.

Further, the side of the oil-water filter screen 125 away from the oil-water 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 box 124 from the oil-water 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 screen 125 is connected to the bottom of the multiphase separation tank 124, and the top end of the oil-water filter screen 125 is higher than the oil-water discharge pipe 112, so that the wastewater discharged from the oil-water discharge pipe 112 into the multiphase separation tank 124 can be filtered completely.

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 the 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, which is far away from the water outlet pipe 122, and is higher than the gap; the water layer is located below the oil layer and communicates with the gap so that water can flow from the gap toward the side of the upper baffle 123a toward the water outlet 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. In the flowing process, the wastewater is blocked by the lower baffle 123b, flows to a position between the two upper baffles 123a, and is subjected to secondary oil-water stratification, that is, the oil layer is located between the two upper baffles 123a, and the water layer flows to the water outlet pipe 122 from the lower part of the upper baffles 123 a.

And furthermore, the oil outlet pipe 121 is communicated with the oil layer, and the water outlet pipe 122 is communicated 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 6, 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, outlet pipe 122 directs water to electrochemical purification apparatus 130, for example, by way of lift pump 150.

In a specific embodiment, referring to fig. 1, 7 and 8, 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 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 spraying liquid provides water, nutrient substances, proper temperature and pH value for the microorganisms, and provides conditions for the microorganisms to carry out the solidification of the tail gas; and the spray liquid can keep the microbial degradation layer 147 free. An ozone concentration sensor is arranged at the input port of the bio-trickling filter 140 b; for detecting whether the ozone content in the water body input into the bio-trickling filter 140b is lower than a preset requirement, so as to ensure the microbial activity in the bio-trickling filter 140 b.

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.

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 should 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

1. A multi-phase extraction integrated processing system, comprising:

a multiphase extraction apparatus comprising: an air outlet pipe and an oil-water delivery pipe;

multiphase separation device, intercommunication profit eduction tube, multiphase separation device includes: an oil outlet pipe and a water outlet pipe;

a pollutant treating device comprising: an electrochemical purification device and a gas purification device;

the electrochemical purification device is communicated with the water 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; 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 which is communicated with the water 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 water 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 multi-phase extraction integrated process system according to any one of claims 1 to 4, wherein the multi-phase extraction unit 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;

the oil-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 processing system as recited in claim 6, wherein the multi-phase extraction device comprises:

a well screen disposed between the liquid chamber and the gas chamber, or disposed within the liquid chamber.

8. 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 oil-water outlet pipe;

and an oil-water separation cavity is arranged on one side of the oil-water filter screen, which is far away from the oil-water delivery pipe.

9. The multi-phase extraction integrated processing system according to claim 8, wherein the multi-phase 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 communicates the oil layer, the outlet pipe communicates the water layer.

10. 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.