142 results about "Electro flocculation" patented technology

The invention relates to the technical field of electrochemical water treatment, and discloses a high-salt waste liquid electric flocculation hardness removal and electrodialysis resourceful treatment method and a high-salt waste liquid electric flocculation hardness removal and electrodialysis resourceful treatment system. The method comprises the following steps: collecting water quality parameters of the high-salt waste liquid and initial electrochemical impedance spectroscopy parameters of a polar plate; calculating the initial current density according to the hardness and the conductivity, carrying out electric flocculation treatment, monitoring impedance spectrum change in real time, identifying the scaling type, and predicting the residual operation time of the polar plate; the current density is optimized according to the prediction time, and the residual hardness is calculated; and adjusting electrodialysis parameters by taking the residual hardness as a feedforward signal for concentration, and performing bipolar membrane electrodialysis on the concentrated solution to obtain acid-alkali liquor. The problems that in the electrochemical treatment process of the high-salt waste liquid, the state of a polar plate cannot be monitored in real time, consequently, operation parameters are adjusted blindly, and energy consumption is high and the recycling efficiency is low due to the fact that parameters of a pretreatment unit and parameters of a pretreatment unit are not linked are solved.

The invention discloses a circuit board wastewater heavy metal removal method and system, and the method comprises the steps: monitoring the concentration and valence distribution of heavy metal ions in circuit board wastewater in real time, and generating wastewater heavy metal form distribution characteristics in combination with oxidation-reduction potential and pH value; based on wastewater heavy metal form distribution characteristics, adjusting an oxidation-reduction environment to generate heavy metal ion enriched wastewater; the method comprises the following steps: introducing heavy metal ion enriched wastewater into an electric flocculation reactor, applying a periodic electric field through a programmable pulse power supply to dissolve an aluminum or iron anode to release a multi-core hydroxyl complex, and carrying out a co-precipitation reaction with heavy metal ions to generate a flocculating constituent suspension; and introducing the flocculating constituent suspension into a rotational flow clarification and separation device, realizing mud-water separation through centrifugal sedimentation and inclined plate separation, outputting supernate, discharging the supernate after reaching the standard, and recovering precipitated sludge rich in heavy metals. By utilizing the embodiment of the invention, efficient breaking and separation of the complex-state heavy metals can be realized, and good environmental benefits and resource values are achieved.

The present application relates to the field of sewage purification, and discloses a household micro sewage treatment system and a sewage treatment method, which comprises the following steps: building a septic tank; preparing a household micro sewage treatment system, an aeration system and suspended filler for microbial attachment; pumping clarified liquid by a lifting pump, and the clarified liquid enters a contact oxidation zone, and microorganisms degrade COD and BOD in the clarified liquid; the clarified liquid at the contact oxidation zone flows into an electrocoagulation zone, and electrocatalytic flocculation is performed; then, pollutants and phosphorus in the clarified liquid are filtered by a filtering zone, and the clarified liquid forms purified water; the purified water is taken from a water outlet zone, and is used for crop irrigation; or, a landscape zone for breeding aquatic plants or plankton is arranged at the water outlet zone. In the present application, the contact oxidation zone, the electrocoagulation zone, the filtering zone and the water outlet zone are sequentially and continuously arranged from bottom to top, and the arrangement structure of the whole household micro sewage treatment system is compact, and it is more convenient to arrange the system in a separate house environment in rural areas.

The invention discloses a composite electric field catalytic oxidation synergistic oil and gas field produced water treatment method which comprises the following steps: acquiring an electric flocculation effect generated by a corrosion-resistant titanium-based coating anode and a stainless steel cathode under optimized pulsed electric field parameters through a turbidity sensor and a particle size analyzer, and superposing low-frequency pulses in a composite pulse mode, maintaining the temperature of the reactor to be 20-40 DEG C in combination with a temperature control system to obtain initial floc particle size distribution and concentration data; the concentration state of the floc in the concentration tank is monitored by adopting a conductivity sensor according to the amount of the floc in the concentration tank treatment pollution discharge scheduling scheme, the content of remaining oil drops and suspended solids is analyzed in combination with an emulsion monitoring module, and the water quality parameter change of the concentration tank is recorded through a data analysis system, so that a final water quality treatment result is determined.

The utility model relates to an electrode assembly with discharge bulges and a water treatment device adopting the same. The electrode assembly comprises two electrode plates which are oppositely arranged, discharging protrusions are arranged on the surfaces of the discharging sides of the electrode plates, a gap is reserved between the discharging protrusion on any electrode plate and the other electrode plate, and the discharging sides of the discharging protrusions are of a mushroom head structure and are installed on the electrode plates in a detachable connection mode. The water treatment device is provided with a pretreatment tank or an electric flocculation tank, the electrode assembly is arranged in the pretreatment tank or the electric flocculation tank, outlet water of the pretreatment tank or the electric flocculation tank is connected into an aerobic tank, outlet water of the aerobic tank is connected into a secondary sedimentation tank, and outlet water of the secondary sedimentation tank is connected into a clean water tank. The electrode assembly provided by the utility model can reduce the discharge voltage requirement under the condition of keeping a relatively large discharge current, so that the preparation cost and the operation cost are further reduced, and scaling separation after positive and negative electrode guiding is facilitated.

The utility model discloses integrated mariculture tail water treatment equipment which comprises an electrolysis area, a settling area and an ultrafiltration area which are arranged in a frame, the electrolysis area and the ultrafiltration area are positioned on two sides of the settling area; an electric flocculation device is arranged in the electrolysis area; a plurality of groups of inclined plates are arranged in the settling zone, and a sludge compacting device is arranged at the bottom; according to the tail water treatment device, tail water can be treated, the efficiency is high, and secondary pollution to the tail water is avoided.

The application provides an electro-catalysis and electro-flocculation coupled wastewater treatment system and method. The system comprises a water inlet tank, a middle water tank, a water outlet tank, A and B electrode groups, and A and B diode switches. The A and B electrode groups each comprise one or more than two electrodes in series, and the electrodes use a tubular electrode plate with a coaxial middle axis and a detachable columnar electrode plate as cathode and anode plates. The water inlet tank is connected to the middle water tank through the channels between the cathode and anode of each electrode of the A electrode group. The middle water tank is connected to the water outlet tank through the channels between the cathode and anode of each electrode of the B electrode group. The circuit currents of the A and B electrode groups are reversely connected in parallel, and the A and B diode switches are arranged at the anode interfaces of the two electrode groups. The ratio of the product of the total water resistance of the A electrode group and the maximum anode area to the product of the total water resistance of the B electrode group and the minimum anode area is not more than 1:5. The electro-catalysis and electro-flocculation are coupled to treat wastewater under the same alternating current power supply.

The invention relates to the technical field of industrial wastewater treatment and solid waste resource utilization, in particular to a coal-containing wastewater electric flocculation sludge full-quantitative resource recovery system and method, which comprises a coal water adjusting tank, an electric flocculation device, a magnetic separation mechanism, an iron-rich sludge resource treatment mechanism and an aluminum-rich sludge resource treatment mechanism, the coal water adjusting tank, the electric flocculation device and the magnetic separation mechanism are sequentially communicated, and the iron-rich sludge resourceful treatment mechanism and the aluminum-rich sludge resourceful treatment mechanism are both communicated with the magnetic separation mechanism; wherein the electric flocculation device is provided with a magnetic powder feeding mechanism, and the magnetic separation mechanism is reversely communicated with the magnetic powder feeding mechanism. According to the method, high-efficiency separation and gradient recovery of two valuable metals of iron and aluminum can be realized, the product is upgraded from low-value mixed sludge to a high-purity iron-based product and an aluminum-based coagulant, the problem of final treatment of the sludge is thoroughly solved, and resource recycling of solid wastes is realized.

The present invention is used in the technical field of wastewater treatment. Disclosed is a modular integrated electrolysis-electrocoagulation wastewater treatment system. The wastewater treatment system comprises a C module, an A module, a B module, an S module, and an F module. In the modular integrated electrolysis-electrocoagulation wastewater treatment system, when treating different types of wastewater, a plurality of treatment modules are combined and installed in a specific sequence, and when conductive electrode plates are energized, pollutants in the water undergo redox reactions, so that the pollutants in the wastewater can react with different metal ions to form flocs, and the flocs precipitate out. For different types of wastewater, the same types of treatment modules are used but are installed in different sequences. Provided is a working mode in which the treatment sequence varies for different types of pollutants, so that some pollutants that are initially non-reactive with a specified module can react with the specified module after undergoing electrolysis or electrocoagulation reactions with other modules, thereby achieving a better treatment effect.

This invention discloses an apparatus and process for removing hexavalent chromium ions from water, comprising: a positive electrode reaction chamber, a negative electrode reaction chamber, an electrocoagulation reaction chamber, and a sedimentation tank. The positive electrode reaction chamber contains graphite plates A and B, and is filled with brine. The negative electrode reaction chamber contains porous carbon material, with a sponge-structured graphite plate connected to the negative electrode of a DC power supply. Graphite plate C is laid flat at the bottom of the negative electrode reaction chamber and connected to graphite plate B. A buffer zone is connected to the electrocoagulation reaction chamber, which contains an array of iron electrodes. The iron electrodes at the two edges of the array are connected to the positive and negative electrodes of a second DC power supply. The bottom of the electrocoagulation reaction chamber is connected to the sedimentation tank. This invention requires only electricity and a small amount of iron to remove hexavalent chromium ions from water, significantly reducing the use of reducing agents, chemicals, acids, and alkalis in traditional hexavalent chromium treatment processes, and producing effluent with a salt content far lower than that of traditional treatment processes.

The present invention relates to a system or method for the remediation of wastewater with a treatment media in tandem with an electrocoagulation system. The system and method also include cleaning elements for cleaning distribution lines within the system and for cleaning the electrocoagulation system.

The invention discloses a device and a method for electrolytic purification treatment and synchronous electrolytic hydrogen production of mine water, the device comprises four stages of anode electrolytic flocculation tanks which are horizontally arranged in series, each stage of anode electrolytic flocculation tank is internally and symmetrically provided with two plate-shaped anodes, and two sides of each stage of anode electrolytic flocculation tank are symmetrically provided with cathode electrolytic water hydrogen production reaction tanks; a diaphragm is arranged between each stage of anode electrolysis flocculation tank and the corresponding cathode water electrolysis hydrogen production reaction tank; a disc-shaped micro-channel is arranged in the cathode water electrolysis hydrogen production reaction tank, and a plate-shaped cathode is mounted between the disc-shaped micro-channel and the diaphragm. The four-stage anode electrolytic flocculation basin is adopted, pollutants in the mine water are gradually and deeply removed through multi-stage continuous electrolysis and electric flocculation reaction, compared with a traditional single-stage treatment mode, the purification effect is remarkably improved, the content of impurities such as suspended solids and heavy metal ions in the mine water can be more effectively reduced, and the treated water quality is better.

This application relates to the field of solid waste resource utilization technology, specifically disclosing a method for synthesizing lithium iron phosphate based on sludge incineration ash through electrocoagulation-lithiation. The method involves leaching sludge incineration ash with dilute sulfuric acid to obtain a phosphate-containing acid leachate, followed by purification with a cation exchange resin to remove multivalent metal impurities. Using the purified phosphate solution as the base electrolyte, a lithium source, electrolyte, and organic carbon source are added, and the pH is adjusted. An iron plate is used as the anode and an inert electrode as the cathode for electrocoagulation. Fe²⁺ dissolved at the anode co-precipitates with PO₄³⁻ and Li⁺ in the solution to form a LiFePO₄ precursor slurry. Finally, solid-liquid separation, washing, drying, and programmed temperature sintering are performed to obtain a carbon-coated lithium iron phosphate composite material. This application has the advantage of achieving high-value utilization of sludge incineration ash.

The invention discloses a roof self-purification evaporative cooling method and system. The method comprises the following steps that S10, a roof is cooled through spraying of a spiral-flow type atomizing nozzle or rainwater; s20, the automatic flow discarding module collects spraying water or rainwater; the automatic flow discarding module discards spray water or rainwater with gravel impurities at the initial stage through the control system, and then discharges clear spray water or rainwater to the integrated electrochemical water treatment module; s30, in the integrated electrochemical water treatment module, spraying water or rainwater is subjected to electric flocculation precipitation through an electric flocculation unit, filtered through an oxygenation filtering unit and then subjected to electrooxidation disinfection treatment through an electrooxidation disinfection unit; and S40, the spraying water or rainwater subjected to electric flocculation and electrooxidation disinfection treatment is pumped and flows back to the spiral-flow type atomizing nozzle. Through the arrangement, roof rainwater can be effectively collected and purified, the problems of nozzle blockage and biological pollution caused by reuse water are solved, the roof temperature and the building cold load are reduced through intelligent spraying, and the system is suitable for humid and hot and high-radiation areas.

The waste incineration treatment device comprises an incineration tower, a waste gas treatment device and a fly ash treatment device, the waste gas treatment device comprises a waste gas input pipeline, a waste gas heating mechanism, a waste gas output pipeline and a waste gas filtering mechanism, and the waste gas heating mechanism comprises a plurality of reaction bins and a heating mechanism; the waste gas filtering mechanism is communicated with the reaction bins through waste gas output pipelines, injection pipelines are further arranged on the reaction bins, and an activated carbon filtering layer is arranged in the waste gas filtering mechanism; the fly ash treatment device comprises n treatment units, a conveying mechanism is arranged between the treatment units, each treatment unit comprises a treatment bin, a washing mechanism is arranged in each treatment bin, a circulating water mechanism is further arranged between the treatment units, and the drainage system of the (n + 1) th treatment unit is communicated with the water inlet system of the nth treatment unit. The drainage system of the first treatment unit is purified by the electric flocculation sewage treatment mechanism and then is discharged, and the discharge end of the final treatment unit is connected with a stacking mechanism for making bricks.

The application discloses a segmented electrochemical method coupled water treatment system and method suitable for circulating water reuse treatment, which comprises an electrostatic water treatment chamber, a water conveying pipeline, an ultrasonic wave generator, an electric flocculation water treatment device and a settler; the outlet of the electrostatic water treatment chamber is connected with the inlet of the electric flocculation water treatment device through the water conveying pipeline, the outlet of the electric flocculation water treatment device is connected with the inlet of the settler, and the water conveying pipeline is provided with an ultrasonic wave transducer; the ultrasonic wave transducer is connected with the ultrasonic wave generator; the system and the method can efficiently prevent and remove scale without adding reagents.

The invention relates to the technical field of glass grinding wastewater recovery treatment, and discloses a wastewater recovery device and a recovery method for glass grinding wastewater, the wastewater recovery device comprises an electric flocculation reactor, an inclined tube sedimentation tank and a vertical centrifugal dehydrator which are sequentially communicated along a wastewater treatment flow; the electric flocculation reactor comprises a reaction cylinder, a cathode electrode plate and an anode electrode plate, the cathode electrode plate is fixed on the peripheral side of an inner cavity of the reaction cylinder, the anode electrode plate is rotationally arranged in the middle of the reaction cylinder, and the cathode electrode plate and the anode electrode plate form a primary battery effect in the wastewater to perform electric flocculation treatment on the wastewater. Under the rotation of the anode electrode plate, the rotation track of the anode electrode plate forms a cylindrical shape, and at the moment, stirring blades arranged on a stirring rod rotate along with the interior of the cylindrical shape and generate downward thrust, so that a dynamic process that wastewater and suspended particles flow upwards from the outer side of the anode electrode plate and then flow downwards from the inner side of the anode electrode plate can be formed in the reaction cylinder; and flocculation products are concentrated at the bottom of the reaction cylinder.

The invention belongs to the technical field of riverway sewage treatment, and particularly relates to a riverway comprehensive nitrogen and phosphorus removal system and a construction method thereof.According to the riverway comprehensive nitrogen and phosphorus removal system, a treatment pond is constructed in a riverway through an enclosure, and water surface garbage is collected in the area, located outside the treatment pond, of the riverway through a water surface garbage collection device; the water surface garbage collecting device is used for collecting water surface garbage, the water surface garbage collecting device is used for collecting water surface garbage, the water surface garbage collecting device is used for collecting water surface garbage, the water surface garbage collecting device is used for collecting water surface garbage, the water surface garbage collecting device is used for collecting water surface garbage, the water surface garbage collecting device is used for collecting water surface garbage, the water surface garbage collecting device is used for collecting water surface garbage, and the water surface garbage collecting device is used for collecting water surface garbage. And the power supply device is used for supplying power to the water surface garbage collection device, the water pump, the gas-liquid mixing biological filter denitrification water purification device and the electric flocculation phosphorus removal device and performing work control, so that the aims of efficiently removing nitrogen and phosphorus while collecting water surface garbage from sewage can be fulfilled.

The invention discloses a method for removing anions in soil and underground water through electrokinetic remediation-in-situ electrochemical green rust production adsorption coupling. An electrokinetic remediation unit and an electric flocculation unit located on a device are included. According to the electrokinetic remediation-electric flocculation coupling, a periodic square wave power supply is adopted to control two units to work alternately, and a square wave periodic power supply mode with different duty ratios of EC and EK is adopted, so that the removal efficiency of anions is improved, and the energy consumption of working units is reduced; the anode of the electric flocculation unit is doped with magnesium and zinc, Fe < 2 + > electrolysis is promoted, the green rust yield and stability are improved, and the efficiency of capturing and removing anions is further promoted; the cathode of the electric flocculation unit has a high local pH value, precipitates or micro-precipitates are generated with cations generated by electrolysis to pre-capture anions, and the anions are deposited to the bottom of the electric flocculation unit to further promote the removal efficiency of the anions and provide a smooth path for subsequent migration and capture of the anions at the same time.

A liquid treatment unit removes particulate matter and colloids from a liquid, as found in waste water on mines, on construction sites and on heavy industry sites. The liquid treatment unit includes an electrocoagulation unit and a cyclonic separator unit. The liquid to be treated is first subject to electrocoagulation and then fed into the cyclonic separator unit. The cyclonic separator unit guides the electrocoagulated liquid in a circular path downwardly from an outer perimeter to move underneath a skirt and then upwardly and inwardly towards a central outlet located at the top of the cyclonic separator. Floating particles are skimmed from the surface outside of the skirt. In moving to the outlet, the liquid passes through a plurality of nested frusto-conical guide members. An ultrasonic transducer is used to collapse bubbles formed by electrocoagulation, and to clean the electrocoagulation electrodes.

The utility model discloses an electrochemical treatment device for printing and dyeing wastewater, and relates to the technical field of wastewater treatment. Comprising a box body, the upper surface of the box body is of an opening structure, a water inlet pipe is arranged on the upper side of the right side wall of the box body, a water outlet pipe is arranged on the upper side of the left side wall of the box body, an aeration mechanism is arranged at the position, close to the lower side, in the box body, and a positive conductive mechanism and a negative conductive mechanism are arranged on the upper surface of the box body; a control mechanism is arranged in the control box and electrically connected with the solar panel, and the control mechanism is in wireless communication connection with the background server. Photovoltaic and electric flocculation are ingeniously coupled, an inverter, an energy storage device and a high-voltage pulse power supply are omitted, so that the operation cost is reduced, the photovoltaic power supply is adopted as an electric flocculation power supply, the control mechanism is adopted to automatically regulate and control the optimal polar plate distance of different waste iron profiles under different light intensity voltages, and the operation and maintenance operation convenience is improved through the internet of things.

The invention relates to the technical field of sewage treatment, in particular to a sewage treatment method for efficiently removing phosphorus and heavy metals based on an electric flocculation technology, which comprises the following steps: introducing sewage to be treated into an electric flocculation reaction tank, and adjusting the pH value; a functional anode plate prepared from composite multi-metal and an inert cathode plate form an electrode group, and an electric flocculation reaction is carried out under the action of a direct-current electric field; settling and separating the sewage after the electric flocculation reaction, and removing flocculating constituents to obtain purified water. The functional anode plate is a composite metal matrix composed of iron, aluminum, magnesium and zirconium, and hydrated metal polymers which are richer in variety and better in flocculation effect can be synergistically generated during electrolysis; by means of an organic-inorganic hybrid grafting layer constructed on the surface of the anode through 3-(trihydroxysilyl) propyl methyl phosphate, hydrophilicity and active sites on the surface of the electrode are increased, and mass transfer and adsorption of pollutants to the surface of the electrode are promoted.

The invention provides a desulfurization wastewater comprehensive treatment system and method based on electrical method cooperative treatment, and relates to the technical field of desulfurization wastewater treatment.The desulfurization wastewater comprehensive treatment system comprises a pretreatment unit and a multi-stage electric treatment unit, a water inlet of the pretreatment unit is suitable for being connected with a desulfurization wastewater source, and the pretreatment unit can conduct alkalization treatment on desulfurization wastewater; the multi-stage electric treatment unit comprises an electric flocculation reactor, an electrochemical hardness removal device, an electric adsorption device and an electrolytic chlorine production device which are connected in sequence, the electric flocculation reactor, the electrochemical hardness removal device, the electric adsorption device and the electrolytic chlorine production device are all suitable for being electrically connected with an external power supply, and a water inlet of the electric flocculation reactor is connected with a water outlet of the pretreatment unit; the water outlet of the electrolytic chlorine production device is suitable for being connected with an external circulating water system to sterilize the water body. According to the device and the method, a multi-stage electrical method technology with synergism of electric flocculation suspended matter removal, electrochemical softening hardness removal, electro-adsorption desalination and electrolytic sterilization is integrated, and efficient purification of the desulfurization wastewater can be realized.

This invention belongs to the field of fracturing flowback fluid treatment technology, and discloses a method and system for treating fracturing flowback fluid. The system includes a fracturing flowback fluid inlet pipeline, a pretreatment tank, a micron-sized aerated water pump device, an air storage tank, an air flotation cyclone separator, a metal membrane electrocoagulation device, a vacuum storage tank, and a two-stage DTL membrane treatment device. This invention achieves the treatment and reuse of fracturing flowback fluid through a combined process of pretreatment + air flotation cyclone treatment + metal membrane electrocoagulation treatment + DTL membrane treatment.

The invention belongs to the technical field of sewage treatment, and particularly relates to an anti-scaling composite electrode plate, application of the anti-scaling composite electrode plate in wastewater treatment and electric flocculation oxidation reaction equipment, the anti-scaling composite electrode plate comprises an anode plate and a cathode plate, the outer surface of the anode plate and the outer surface of the cathode plate are evenly coated with anti-scaling coatings, and the anti-scaling coatings are arranged on the outer surface of the anode plate and the outer surface of the cathode plate. The anti-scaling coating is a polytetrafluoroethylene-silicon dioxide mixed coating, and the polytetrafluoroethylene-silicon dioxide mixed coating is prepared by taking polytetrafluoroethylene as a matrix and silicon dioxide as an inorganic filler through a film forming process. Through the structural design of the anti-scaling composite electrode plate, the application of the anti-scaling coating and the adaptation of the low-voltage pulse power supply, the scaling problem of the existing electric flocculation oxidation equipment is fundamentally solved, the efficiency, the service life and the improvement cost are considered at the same time, and the anti-scaling composite electrode plate has remarkable practical value and popularization prospect.

The utility model discloses an organic wastewater filtration type micro -electrolysis treatment device, including electrolytic jar, the both ends parallel of electrolytic jar inner chamber are provided with electrode plate, be provided with stirring mechanism on the electrolytic jar, the stirring mechanism includes the first stirring shaft of rotation setting in electrolytic jar inner chamber middle part, first stirring vane is provided with to the first stirring shaft lateral wall, the top of electrolytic jar is provided with the first drive source for driving first stirring shaft rotation, the below of electrolytic jar is provided with filter jar, and the filter jar is communicated with electrolytic jar through the communication pipe intercommunication. This organic wastewater filtration type micro -electrolysis treatment device, through the directional manufacture strong turbulence of setting stirring mechanism, can directly flush the electrode plate surface, can break the diffusion boundary layer of reactant, product simultaneously, improves the mass transfer efficiency of pollutant, and can prevent the cathode scale and anode passivation, maintains electrode activity, can also promote the uniform diffusion of Fe 2+ , Al 3+ Ion in the electric flocculation process, forms dense flocculation.

The utility model discloses integrated equipment for deeply treating perfluorooctanoic acid wastewater, and relates to the technical field of wastewater treatment. Ultraviolet light catalysis, electric flocculation and adsorption technologies are integrated, so that three-stage synergistic purification of the perfluorooctanoic acid wastewater is realized, and organic fluorine and generated inorganic fluorine ions can be synchronously removed and degraded. The equipment comprises an ultraviolet light catalytic reaction device, an electric flocculation device and an adsorption device, an inlet of the electric flocculation device is communicated with an outlet of the ultraviolet light catalytic reaction device, and an outlet of the electric flocculation device is communicated with an inlet of the adsorption device. The method is used for improving the performance of the perfluorooctanoic acid wastewater equipment.

The application belongs to the technical field of oil and gas exploitation, and particularly relates to a high-emulsification sewage treatment device for oil and gas fields. The high-emulsification sewage treatment device for oil and gas fields comprises an electric flocculation cabin and a cyclone cabin, a cyclone pipe is arranged on the electric flocculation cabin, sewage enters the electric flocculation cabin through the cyclone pipe, an outer ring electrode, an inner ring electrode and a center ring electrode are sequentially and fixedly arranged in the electric flocculation cabin in a spaced coaxial manner from outside to inside, the polarity of the outer ring electrode and the center ring electrode is opposite to the polarity of the inner ring electrode, after the sewage enters the electric flocculation cabin, the sewage first passes through the annular space between the outer ring electrode and the inner ring electrode, and then passes through the annular space between the inner ring electrode and the center ring electrode. The application can efficiently separate impurities in the sewage, and occupies a small space.

The invention provides an industrial wastewater closed-loop recovery device, and relates to the technical field of recovery devices.The industrial wastewater closed-loop recovery device comprises an electric flocculation basin, an auxiliary structure and a sludge discharge valve, a recovery structure is arranged on the inner wall of the electric flocculation basin and comprises an electric flocculation assembly, a precipitation assembly and a filtering assembly, and the electric flocculation assembly comprises two adding frames; the two mounting frames are fixedly connected with the electric flocculation basin together, the electric flocculation basin is provided with an electrode assembly by virtue of the two mounting frames, one side of the electric flocculation basin is provided with a water passing opening, the sedimentation assembly comprises a sedimentation basin, the sedimentation basin is fixedly connected with the electric flocculation basin, the bottom wall of the sedimentation basin is provided with a sludge discharge opening, and the sludge discharge opening is communicated with the sedimentation basin. An overflow weir is mounted on one side, far away from the water passing opening, of the sedimentation tank, and is a sawtooth overflow weir. According to the invention, the defects that a factory needs to continuously consume fresh tap water and water resources are seriously wasted due to the fact that recycling is not considered in a traditional treatment mode in the prior art are overcome.