297 results about "Electro flocculation" patented technology

The invention belongs to the technical field of water treatment processes and devices, and particularly relates to a pharmaceutical wastewater treatment process and a pharmaceutical wastewater treatment device. According to the treatment process of the pharmaceutical wastewater, the pharmaceutical wastewater is subjected to the following processes: an electric flocculation process, a catalytic ozonation process, a ceramic membrane separation process and a reverse osmosis process; the membrane aperture of the reverse osmosis process is 0.3-0.4 nm, the transmembrane pressure difference is 2.0-3.0 bar, reverse osmosis desalted fresh water and reverse osmosis strong brine are respectively obtained, the reverse osmosis desalted fresh water directly reaches the standard for reuse, and the reverse osmosis strong brine is returned to the electric flocculation process for repeated treatment. The pharmaceutical wastewater treatment process provided by the invention not only can realize synchronous removal of suspended matters and organic matters, but also can realize desalination and deep purification of pharmaceutical wastewater, and provides a feasible and sustainable solution for pharmaceutical wastewater treatment, and the invention also provides a treatment device thereof.

The invention relates to an electric flocculation reactor and an electric flocculation treatment method. The electric flocculation reactor is provided with a biochemical treatment unit and a pretreatment unit located in the front of the biochemical treatment unit, and an electrode assembly with adjustable electrode spacing is arranged in the pretreatment unit. According to the electric flocculation treatment method, the electric flocculation reactor is adopted for removing pollutants in water, the distance between electrode plates in the electrode assembly is set or adjusted according to the water flow of inlet water or the pollutant flow, the biochemical treatment unit comprises an aerobic tank, the electrode assembly is arranged in the aerobic tank, iron ions are released through the electrode assembly, and the water quality is improved. And an iron ion environment beneficial to growth and metabolism of aerobic microorganisms is formed. According to the invention, the electrode spacing of the electric flocculation reaction can be adjusted, and the electric flocculation reaction device can better adapt to actual requirements.

The invention belongs to the technical field of wastewater treatment, and particularly discloses a thallium-containing wastewater treatment device which comprises a sedimentation tank and a reaction tank arranged on the upper portion in the sedimentation tank, and the reaction tank comprises an electro-catalysis tank, a pH adjusting tank, an electric flocculation tank, a magnetic medium inoculation tank and a stabilization tank which are sequentially communicated; a drainage tank I communicated with the electro-catalysis tank is arranged in the pH regulating tank; an outlet of the drainage tank I is communicated with the electric flocculation tank through a vortex tank I and an arc-shaped water outlet tank I in sequence; the structures of the magnetic medium inoculation pool and the stabilization pool are the same as the structure of the pH adjusting pool; pH probes are mounted in the pH regulating tank and the stabilizing tank. The invention also discloses a thallium-containing wastewater treatment method. The thallium-containing wastewater treatment device disclosed by the invention is large in occupied area, good in removal effect and stable in effluent; and a thallium removing agent, a flocculating agent and the like are not required to be added during operation, so that the operation cost is greatly reduced.

The invention discloses an adjustable self-cleaning electric flocculation device, and relates to the technical field of electric flocculation devices, the adjustable self-cleaning electric flocculation device comprises an electric flocculation tank, a support plate is slidably connected to the electric flocculation tank, first polar plates are uniformly arranged in the electric flocculation tank, second polar plates are arranged in the support plate in a staggered manner, and the adjustable self-cleaning electric flocculation device also comprises a polar plate spacing adjusting mechanism, a self-oscillation mechanism and a self-cleaning mechanism; the polar plate distance adjusting mechanism is arranged at the bottom of the electric flocculation tank and is used for adjusting the distance between the first polar plate and the second polar plate; the self-oscillation mechanism is arranged above the first polar plate and is used for vibrating and removing impurities from the first polar plate; compared with the prior art in which polar plates are arranged at fixed intervals, the device can be accurately matched with wastewater with different electrical conductivity by dynamically adjusting the intervals of the electrodes, so that the current density distribution is more uniform. For example, the ineffective energy consumption can be reduced by increasing the electrode spacing of the low-conductivity wastewater, and the electric field intensity can be enhanced by reducing the spacing of the high-conductivity wastewater, the dissolution efficiency of metal ions can be improved, and the treatment period can be shortened to 30-60 minutes.

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 invention discloses an advanced wastewater treatment device which comprises an electrolytic bath, a hollow titanium basket electrode arranged in the electrolytic bath, and a power supply electrically connected with the hollow titanium basket electrode, the device comprises at least one pair of hollow titanium basket electrodes, the hollow titanium basket electrodes are filled with metal particles, the bottom of each hollow titanium basket electrode is provided with an aeration device, and the metal particles in the hollow titanium basket electrodes move and collide under the action of bubbles generated by the aeration device in the hollow titanium basket electrodes of the device, so that the depassivation effect can be achieved; meanwhile, electrolyte mass transfer and exchange are achieved through convex holes in the surface of the hollow titanium basket electrode, electrolytic reaction ion migration is achieved, and the device is simple in structure, easy to operate, convenient to add electrode materials, capable of improving the electric flocculation efficiency, low in cost and high in treatment capacity.

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 belongs to the field of municipal water purification engineering, and provides a grid flocculation reaction tank with an electric flocculation function, which comprises a tank body, an anode plate and a cathode plate, a first hole and a second hole are formed in the side wall of the tank body; the anode plate is arranged in the tank body, the outer edge of the anode plate abuts against the inner wall of the tank body, and meshes are formed in the anode plate; the cathode plate is arranged in the pool body, the outer edge of the cathode plate abuts against the inner wall of the pool body, meshes are formed in the cathode plate, the anode plate and the cathode plate are arranged in parallel at intervals to jointly form a flocculation structure, and the first hole and the second hole are located in the upper side and the lower side of the flocculation structure respectively. In the reaction tank, the anode plates can be subjected to oxidation reaction to generate metal ions, metal hydroxides and polyhydroxy complexes are generated through hydrolysis and polymerization, and the metal hydroxides and the polyhydroxy complexes can be quickly subjected to flocculation reaction with raw water. Under the condition that a flocculant is not added or a small amount of flocculant is added, a flocculation function is realized through an electric flocculation reaction, so that medicaments can be saved, the flocculation effect can be enhanced, and the treatment efficiency of turbidity and algae in a water body is greatly improved.

The invention relates to the technical field of measurement data processing, in particular to an electric flocculation water treatment equipment detection method and system, and the method comprises the steps: carrying out the global loss detection of each flocculation tube according to a current treatment task, and obtaining the current impedance value of each flocculation tube electrode; setting an electrode passivation upper limit based on an electrode material of the flocculation tube, and when the current impedance value exceeds the upper limit, recording the duration of exceeding the standard; carrying out loss division on the flocculation tube according to the continuous standard exceeding duration; based on a grading result, establishing a mapping rule of loss grades and operation parameters, and generating a current density suggestion value data table and a water flow speed suggestion value data table corresponding to the loss grades; and outputting an equipment state detection report containing the current density suggestion value data table and the water flow speed suggestion value data table. By means of the method, the problems of how to achieve quantitative evaluation and visual expression of the electrode loss state of the electric flocculation equipment and process instability caused by electrode passivation in the cooperative unbalance process of multiple flocculation tube clusters are effectively solved.

The invention relates to a system and a method for treating high-salinity oily wastewater by coupling photovoltaic-assisted electric flocculation with solar interface evaporation. The system consists of a photovoltaic power generation assembly, an electric flocculation assembly and a solar interface evaporation assembly, the photovoltaic power generation assembly is used for converting solar energy into electric energy and storing the electric energy in the storage battery; the electric flocculation component is used for carrying out flocculation and air floatation treatment on the high-salinity oily wastewater through an electric flocculation process by utilizing the stored electric energy so as to remove organic matters and part of salt in the wastewater; the solar interface evaporator utilizes solar energy to evaporate water in the wastewater, and meanwhile, salt in the wastewater is greatly reduced, and organic matters are further removed. According to the method, clean energy is provided through photovoltaic power generation, and the high-salinity oily wastewater is effectively treated by combining an electric flocculation technology and an interface evaporation technology. The treated water quality can reach the drinking water standard of the World Health Organization, and the method has the advantages of low operation cost, high treatment efficiency, small environmental influence and the like, and has important application value and wide market prospect in treatment of high-salinity oil-containing wastewater and other difficult-to-treat wastewater.

The invention belongs to the technical field of hydrometallurgy, and particularly relates to a nickel-cobalt solution deep purification method which comprises the following steps: (1) oil removal: removing oil from a nickel-cobalt solution with activated carbon to obtain an oil-removed solution; the nickel-cobalt solution is selected from one of cobalt nickel sulfate, cobalt nickel chloride and cobalt nickel nitrate, and the nickel-cobalt solution contains oil; (2) adjusting the pH value: adding inorganic acid or liquid caustic soda into the oil-removed solution, and adjusting the pH value of the solution to 3.0-4.0 to obtain a carbon-removed solution; and (3) carbon removal: transferring the pre-carbon-removal solution into an electrolytic bath, respectively inserting a cathode plate and an anode plate into the pre-carbon-removal solution, electrifying, carrying out electric flocculation carbon removal, and carrying out refined filtration after carbon removal to obtain the purified nickel-cobalt solution. According to the method, only a small number of anodes are consumed, new impurities are not introduced, the cleanliness of the solution is high, and the finally obtained nickel-cobalt solution is suitable for producing high-purity nickel salt, cobalt salt crystals, metal nickel and metal cobalt and has important significance on extraction and application of high-purity nickel and cobalt.

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 invention relates to the technical field of wastewater treatment, and provides a medical and chemical wastewater treatment device and a process thereof. The electric flocculation air flotation machine comprises a tank body, an aeration release mechanism arranged on the tank body and used for aerating and releasing air-dissolved water, a scraping mechanism used for scraping scum and a control mechanism electrically connected with all the mechanisms, a coagulation reaction area, an aeration reaction area, an air floatation area and a slag collection area are sequentially arranged in an inner cavity in the tank body in the length direction of the inner cavity, a sewage input pipe is arranged in the coagulation reaction area, the aeration release mechanism is arranged in the aeration reaction area, a control valve electrically connected with the control mechanism is arranged on the sewage input pipe, and the control valve is connected with the aeration release mechanism. And the scraping mechanism is arranged above the air flotation area and the slag collection area. The wastewater treatment device has the beneficial effect of improving the wastewater treatment effect.

This invention concerns an installation and method for treating a first stream (S1) of a colloidal suspension of water and ultra-fine particles and a second stream (S2) of heavy oil, both of which streams are derived from treating a flow of heavy crude oil or bitumen, to convert them into separate streams of clean water, clean oil, decanted solids and usable gases. The first stream (S1) is treated in a series of electro-kinetic reactors (20) operating by electrolysis / electro flocculation and water tank clarifiers (30) connected in parallel. The second stream (S2) is treated in ultrasound cyclone chambers (40). Released gas is collected from the tops of the electro-kinetic reactors (20) and the ultrasound cyclone chambers (40). Decanted solids are collected from the bottoms of the electro-kinetic reactors (20) and the ultrasound cyclone chambers (40). Clean water is collected from the water tank clarifiers (30). Clean oil is collected from the ultrasound cyclone chambers (40).

The invention discloses an oily water recovery and separation device in the field of oily water treatment. A multi-stage separation module, a cleaning agent proportioning module and a cleaning module are mounted on an omnidirectional mobile vehicle; the multi-stage separation module comprises a primary separation box, a cyclone centrifugal separator and an electric flocculation device; the cleaning module comprises a suction device and a cleaning device, the suction device is used for sucking sewage on the working surface, and the cleaning device is used for cleaning the working surface; the cleaning agent proportioning module is used for uniformly mixing a cleaning agent and water according to a certain proportion, and the mixed cleaning agent and water are conveyed to the cleaning device; the oily water recovery and separation device provided by the invention comprises the suction device and the cleaning device, can realize suction and cleaning of sewage on a working surface, and is also provided with the multi-stage separation module, and the sucked oily water is discharged after oil-water separation. The oil dirt cleaning and separating functions are integrated, and the efficiency is improved.

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 invention discloses a sewage advanced treatment device of an electric flocculation-AOA type MBBR coupled gravity-driven membrane bioreactor for rural domestic sewage treatment and a water treatment method, through the coupling effect of an electric flocculation basin and an AOA type MBBR coupled gravity-driven ceramic membrane bioreactor, gravity driving is adopted, and the sewage advanced treatment device is used for treating rural domestic sewage. The device has the advantages of flexible operation, low water loss, impact load resistance and the like, and regular backwashing or replacement of filter materials and aerators is not needed. Compared with a traditional MBR membrane, the MBBR process has the advantages that the mechanical strength is remarkably improved, the service life is remarkably prolonged, the membrane pollution problem is solved, the membrane flux is increased, the operation and maintenance cost is reduced, the nitrogen and phosphorus removal capacity is improved, a carbon source in raw water can be fully utilized, deep decarburization can be performed without additionally adding the carbon source, and the energy consumption is reduced. Meanwhile, the method also has the advantages of low energy consumption and the like, so that by adopting the AOA process, the carbon source requirement is reduced, the carbon emission is reduced, and low-carbon operation is realized.

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 invention discloses a semiconductor industry sewage treatment and regeneration system and a method thereof. The system comprises a quality-divided pretreatment device, a three-dimensional electric flocculation reactor, an intelligent membrane separation unit and an EDI deep purification device, the method comprises the following steps of dynamic quality separation, electrochemical strengthening and intelligent maintenance. According to the invention, the water purification efficiency is improved, the fluorine ion removal rate is greatly improved compared with the traditional removal rate, the total nitrogen removal rate is improved by 40%, the water production resistivity of ultrapure water is greater than or equal to 18M omega.cm and reaches the SEMIF63 standard, and the system is stable in operation; according to the method, the operation cost is reduced, the chemical consumption is greatly reduced through AI dynamic regulation and control, the water resource recycling effect is greatly improved, and the heavy metal recovery rate is greatly increased; the method accords with green production indexes, the sludge yield is reduced, and the risk of secondary pollution is reduced through the ozone catalysis technology.

The invention discloses an MBR (Membrane Biological Reactor) dispersive sewage treatment device with an electric flocculation function. The MBR dispersive sewage treatment device comprises a filtering device; the purifying device is connected with the filtering device, and the purifying device is provided with an electronic flocculator, an electrode plate arranged in the electronic flocculator, a scraping plate abutting against the electrode plate and a driving device for driving the scraping plate to reciprocate relative to the electrode plate. Compared with the prior art, the MBR dispersive sewage treatment device with the electric flocculation function has the advantages that the electrode plate in the electronic flocculator is electrified, so that ions in sewage are subjected to reduction reaction on the electrode plate, the flocculation reaction is promoted, and the purpose of purifying water is achieved. When scale is generated on the electrode plate after long-time reaction, the driving device is started to enable the scraping plate to reciprocate up and down relative to the electrode plate, scale impurities on the electrode plate can be effectively removed, the cleaning efficiency is high, use is convenient, and the problems that manual cleaning is troublesome, cleaning is not thorough, and the electric flocculation electrolytic reaction efficiency is affected are solved.

The invention relates to the technical field of wastewater treatment, in particular to an intelligent coal-containing wastewater zero-discharge treatment system which comprises an integrated electric flocculation system, a self-circulation treatment zero-discharge process system, a large-capacity coal water treatment pre-sedimentation system, a distributed coal water collection system and a comprehensive application system. Wherein the integrated electric flocculation system comprises an electronic flocculator. According to the coal-containing wastewater treatment method provided by the invention, zero emission of coal-containing wastewater can be realized, the environmental protection benefit is remarkable, the treatment efficiency and effect are improved, the water quality is ensured, and the cost of a sludge treatment system is also saved. Intelligent unattended operation is realized, and the operation cost is reduced. Therefore, the problems in the prior art are solved.

The present invention discloses a rainwater treatment device and a rainwater treatment method. The rainwater treatment device includes a rainwater gutter, an adjustable power supply, an electric flocculation reactor, a normally open electromagnetic water valve and a ceramic membrane; the device also includes an aeration pipe, which is arranged on a pipe between the electric flocculation reactor and the normally open electromagnetic water valve, and the ceramic membrane is located in a pipe joint behind the electromagnetic water valve; the present invention uses a gravity-driven electric flocculation method to treat rainwater, which has a better floc formation rate than traditional electric flocculation, and can prevent the cathode from generating an oxide film during the reverse aeration process, effectively ensuring the stability of the water flux and extending the service life of the electric flocculation reactor; in addition, combined with the strong mechanical properties and stable chemical properties of the ceramic membrane, the water outlet at the end of the electric flocculation is directly connected to the ceramic membrane for membrane filtration, thereby achieving a fast and convenient water purification and production effect; and in actual use, the device uses the gravity of the water body itself as a driving force, saving energy consumption.

The invention relates to a method for removing PFASs in industrial wastewater through metal ion reinforced ferroelectric flocculation, and belongs to the technical field of electrochemical water treatment. The method comprises the following steps that an iron plate serves as an anode, a stainless steel plate serves as a cathode, one or more metal ions of Co < 2 + >, Ni < 2 + >, Zn < 2 + > and Cu < 2 + > are added, and under the aerobic or anaerobic condition, the initial pH of wastewater is regulated to be 4-7, the metal ion concentration is 0.5-2.0 mM, the electrolysis time is 10-120 min, and the current density is 2.5-30 mA / cm < 2 >. According to the method for treating the PFASs in the industrial wastewater through the metal ion reinforced ferroelectric flocculation, the removal efficiency of the PFASs can be improved, the energy consumption and the iron consumption are reduced, and the metal ions can also be synchronously removed.

The utility model relates to the technical field of environmental protection, in particular to an electroplating wastewater micro-electrolysis and electric flocculation integrated device which comprises a first foot support, a water storage barrel is fixedly connected to the upper surface of the first foot support, and a micro-electrolysis rotating mechanism is fixedly arranged on the surface of one side of the water storage barrel. When sewage needs to be cleaned, the sewage is subjected to micro-electrolysis reaction by starting the motor, the aerator switch and the electric flocculation switch, flocculate substances generated after electrolysis are scraped into the scum discharge port by the scum scraper to be discharged, and finally the flocculate substances are discharged after being filtered by the multiple layers of filter screens. According to the device, a plurality of treatment steps such as micro-electrolysis, electric flocculation and filtration are integrated, comprehensive and efficient treatment can be carried out on the electroplating wastewater, the micro-electrolysis reaction decomposes organic matters through filler, heavy metal ions are converted, pollutants are further removed through electric flocculation to form flocculated substances, and finally, the flocculated substances are filtered through a plurality of layers of filter screens, so that the effluent quality is ensured to reach the standard.

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 utility model relates to a drinking water defluorination device and drinking water purification equipment, the drinking water defluorination device comprises a reaction container, a reaction part and an ultrasonic reactor, drinking water to be treated is introduced into a containing cavity through a water inlet end, and the reaction part is used for defluorination of the drinking water under the power-on condition. The electric flocculation reaction is carried out on the to-be-treated drinking water in the containing cavity, floccules float to the water surface in the reaction process, the treated drinking water is located below the floccules and then acts on the reaction part through the ultrasonic reactor, so that the floccules on the reaction part fall off, the surface of the reaction part can be effectively cleaned, and the service life of the reaction part is prolonged. By introducing the electric flocculation method, the process energy consumption is reduced, and meanwhile, passivation of reaction parts can be effectively prevented through the ultrasonic reactor, and the reaction rate is increased.

The utility model discloses a waste salt electrochemical treatment system which comprises a salt dissolving tank, a regulating tank, an electric flocculation device, a sedimentation tank, an electrocatalytic oxidation device, an MVR (mechanical vapor recompression) evaporator, a centrifugal machine and a drying box which are sequentially connected in series, the salt dissolving tank is provided with a waste salt inlet and is further connected to the MVR evaporator, the regulating tank is further provided with an acid liquor and alkali liquor inlet, and the centrifugal machine is further connected to the drying box. Based on the advantages and characteristics of the electrochemical catalytic oxidation reaction, the high-efficiency degradation of organic matters in waste salt is realized, different current conditions can be changed according to the concentration of the organic matters, the waste salt can be recycled, and the treatment efficiency is improved. And long-period stable operation can be achieved, and good economic benefits and environmental protection benefits are achieved.

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 invention provides a ship engine tail gas washing wastewater treatment device and an operation method thereof, belongs to the technical field of ship wastewater treatment, and solves the problem that the existing ship tail gas washing wastewater treatment technology has obvious limitation. The PH adjusting box, the first control valve, the electrostatic flocculation device, the second control valve and the centrifugal machine are sequentially connected, a waste liquid outlet of the centrifugal machine can be communicated with the first discharge pipeline or the membrane separator, an outlet of the membrane separator is communicated with the second discharge pipeline through the seventh control valve, and the input end of the sixth control valve is communicated with the outlet of the membrane separator. Two ends of the fifth control valve are respectively communicated with the output end of the sixth control valve and the inlet of the membrane separator, two ends of the third control valve are respectively communicated with the output end of the sixth control valve and the inlet of the centrifugal machine, and the wastewater monitoring device can monitor the quality of wastewater at the outlet of the centrifugal machine and the outlet of the membrane separator. The device can efficiently remove various pollutants in the washing wastewater.