203 results about "Media filter" patented technology

A regenerative filter that includes a filter housing having inlet and outlet zones; a fluid path provided between the inlet and outlet zones; a plurality of filter elements each having an outer surface filter media applied thereto and functioning to filter particulate or contaminants from the fluid path. The filter elements are disposed in an monolithic array. An inlet port arrangement is disposed at the filter housing leading to the inlet zone and is constructed and arranged to direct the fluid path into the filter housing in a manner so as to maintain a controlled turbulence at the inlet zone. The inlet port arrangement comprises a pair of inlet ports that are arranged in juxtaposition at the inlet zone and each having one end where the fluid flow enters. Embodiments that are considered as falling under the scope of the present invention include 1. Single inlet / two or more outlets; 2. Two or more inlets / single outlet, or 3. Two or more inlets and two or more outlets.

A water filtration system is also disclosed. The water filtration system includes a regenerative media filter vessel, a filtrate line, a feed line, a recirculation line, a gas line, and at least one pump. A method of filtering water in a system comprising a regenerative media filter is disclosed. The method includes operating the system in a filtration mode, operating the system in a cleaning mode responsive to a differential pressure measurement across the regenerative media filter, operating the system in an aeration mode, operating the system in a pre-filtration mode after operating the system in the cleaning mode, operating the system in a drain mode, and operating the system in the filtration mode following the drain mode. A controller and non-transitory computer-readable medium having computer-readable signals stored thereon that define instructions that, as a result of being executed by the controller, instruct the controller to perform a method of operating a water filtration system are disclosed.

A water filtration system is also disclosed. The water filtration system includes a regenerative media filter vessel, a filtrate line, a feed line, a recirculation line, a gas line, and at least one pump. A method of filtering water in a system comprising a regenerative media filter is disclosed. The method includes operating the system in a filtration mode, operating the system in a cleaning mode responsive to a differential pressure measurement across the regenerative media filter, operating the system in an aeration mode, operating the system in a pre-filtration mode after operating the system in the cleaning mode, operating the system in a drain mode, and operating the system in the filtration mode following the drain mode. A controller and non-transitory computer-readable medium having computer-readable signals stored thereon that define instructions that, as a result of being executed by the controller, instruct the controller to perform a method of operating a water filtration system are disclosed.

The utility model provides a system for directly recycling wastewater of a medium-high pressure boiler. The system comprises a collecting and regulating tank, a heat exchanger, a coagulation clarifier, a multi-medium filter, an ultrafiltration system, a secondary reverse osmosis system, an EDI (Electronic Data Interchange) device, a mixed bed and a user high-purity water tank which are connected in sequence, the second-stage reverse osmosis system comprises a first-stage reverse osmosis system and a second-stage reverse osmosis system, the first-stage reverse osmosis system comprises a first-stage RO raw water tank, a precision filter and a first-stage RO device, effluent of the ultrafiltration system enters the first-stage RO raw water tank and then enters the precision filter to be filtered, and water produced by the precision filter is fed into the first-stage RO device; the second-stage reverse osmosis system comprises a second-stage RO raw water tank and a second-stage RO device, fresh water produced by the first-stage RO device is fed into the second-stage RO raw water tank and then enters the second-stage RO device, and fresh water produced by the second-stage RO device is fed into the EDI device to be treated. According to the utility model, a full-flow treatment system is developed aiming at the water quality condition of the wastewater of the medium-high pressure boiler, and the finished water can stably meet the water supply requirements of the medium-high pressure boiler.

The invention discloses a treatment system for power plant wastewater recovery, which comprises a softening pretreatment assembly for removing impurities in wastewater, a clarification tank for treating suspended matters, a clean water tank for storing clean water, a membrane concentration assembly communicated with the softening pretreatment assembly, and a water supply assembly communicated with the membrane concentration assembly. The device is used for further improving the filtering effect on the wastewater and comprises a multi-medium filter for filtering impurities and a reverse osmosis device for desalting the wastewater. The power plant wastewater treatment system has the beneficial effects that some solid impurities in power plant wastewater can be filtered through the softening pretreatment assembly, the crystallization phenomenon in an existing wastewater treatment system is greatly reduced, the treated wastewater can be further filtered through the membrane concentration assembly, salt in the wastewater can be concentrated and separated, the discharge amount of strong brine is reduced, and the treatment cost is reduced. In addition, reverse osmosis produced water and reverse osmosis concentrated water produced by the reverse osmosis device can be respectively supplemented for boiler water and desulfurization water, so that the recycling rate of wastewater is increased.

This invention discloses a method and system for purifying and treating release agents, belonging to the field of release agent purification and treatment. The treatment method is as follows: S1, raw release agent wastewater is introduced into a treatment tank for hydraulic cavitation treatment, while ozone is simultaneously introduced. Floating oil, waste wax, and solid particulate matter in the wastewater float to the surface of the treatment tank and overflow into a scum tank; S2, after cavitation treatment, when there is very little scum on the surface of the treatment tank, the treated liquid in the treatment tank is introduced into a media filter for further filtration. The filtered clean liquid is then transported to a supply tank; S3, when the media packing adsorbs a thick wax layer, the pressure in the filter tank reaches a threshold. Water from the circulating water tank is introduced into the filter tank to backwash the wax layer. The water containing wax after backwashing enters the circulating water tank; S4, when the wax content in the circulating water in the circulating water tank reaches a threshold, a low-temperature steel roller is used to cool the water, causing wax to precipitate onto the steel roller. The wax is scraped off and collected, and the water is reused. This invention uses hydraulic cavitation to break out and remove oil and wax from waste liquid, and further removes residual waste wax from the treated liquid through media filtration, ensuring the cleanliness of the recycled mold release agent liquid.

The utility model relates to the field of desalted water equipment, in particular to a desalted water production system of a nuclear power plant. The utility model relates to a desalted water production system for a nuclear power plant, which comprises a nuclear power plant cooling water collection tank, an ozone oxidation tower, a flocculation sedimentation tank, a multi-medium filter, an activated carbon / resin filter, a desalted seawater collection tank, a roll-type ultrafiltration energy recovery device, a roll-type ultrafiltration device, a reverse osmosis energy recovery device and a reverse osmosis device which are sequentially arranged, the device comprises an anion exchanger, a cation exchanger, a mixed bed and a demineralized water collecting tank.

The multi-medium filter of the water purification equipment comprises a tank body, a bottom support is detachably arranged at the bottom of the tank body, a water inlet pipe is arranged at the top of the tank body, a water outlet pipe is arranged at the bottom of the bottom support, an anti-scour guide plate is fixedly connected to the top of the inner wall of the tank body, and a plurality of flow dividing holes are formed in the bottom of the anti-scour guide plate; the device has the beneficial effects that water flow entering the tank body can be effectively and preliminarily blocked and impulsive force can be effectively relieved through the arrangement of the anti-scour guide plate and the flow dividing holes in the anti-scour guide plate, the impact force of the water flow is effectively reduced, the water flow can be effectively prevented from entering the tank body, and the service life of the tank body is prolonged. Meanwhile, through the arrangement of a motor, a rotating rod and a flow beating plate, water flow flowing down from flow dividing holes is scattered, the water flow impact force is further reduced, meanwhile, the water flow slowly and uniformly falls to a filtering medium layer, and the situation that the filtering effect is affected due to density change caused by the fact that a medium layer of traditional equipment is prone to being impacted is effectively avoided.

The utility model discloses a boiler water replenishing pretreatment device, and belongs to the technical field of boiler water replenishing treatment equipment. Comprising a water replenishing tank, a sterilization treatment unit, a multi-stage physical filtering unit and a deep treatment unit, the sterilization treatment unit comprises a bactericide adding module and a metering pump; the multi-stage physical filtering unit comprises a multi-medium filter, an activated carbon filter and a precision filter; the deep treatment unit comprises a high-pressure pump and a reverse osmosis membrane assembly; the multi-medium filter, the activated carbon filter, the precision filter, the high-pressure pump and the reverse osmosis membrane assembly are connected through a first pipeline, the water supplementing pool is connected with the multi-medium filter through a second pipeline, the bactericide adding module and the metering pump are connected into the second pipeline through a third pipeline, and a variable frequency water pump is arranged on the second pipeline; the boiler replenishment water pretreatment device can effectively sterilize raw water, remove suspended solids and residual hardness, avoid subsequent pollution of hollow fiber membranes, and improve the quality of boiler replenishment water.

The utility model relates to the technical field of multi-medium filters, in particular to a multi-medium filter based on long-acting recycling, which comprises a filter cartridge, a gravel layer, a quartz sand layer, an activated carbon adsorption layer and a manganese sand layer are sequentially arranged in the filter cartridge from top to bottom, and a conical hopper is mounted at the bottom end of the filter cartridge. A mesh plate is installed on the inner wall of the cover body at the top of the conical hopper, a medium blocking net is arranged on the upper surface of the mesh plate, a water outlet pipe is installed at the bottom end of the conical hopper, a first valve is fixedly installed on the water outlet pipe, a flushing pipe is installed on the side face of the conical hopper, and a second valve is installed on the flushing pipe. A sewage discharge pipe is fixedly mounted on a top cylinder body of the filter cylinder, a third valve is fixedly mounted on the sewage discharge pipe, a top cover is fixedly mounted at the top of the filter cylinder, a water inlet pipe is arranged on the top cover, and an ultrasonic generator is fixedly mounted in the center of the top cover. The device has the effects of high-efficiency filtration and subsequent impurity cleaning, and is beneficial to long-acting recycling.

This utility model relates to the field of recycling devices, specifically a multi-media filter forward wash drainage recycling device. It includes a drain pipe, a cleaning mechanism, dust collection components, and a three-way pipe. The drain pipe is connected to a directional valve, which in turn connects to two connecting pipes. The cleaning mechanism includes a cleaning component connected to each of the two connecting pipes, and a cleaning half-cylinder b hinged to each of the two cleaning components. A drive component is driven to the two cleaning components. A dust collection component is placed on each of the two cleaning components, and each dust collection component includes a mounting post connected to the cleaning component, a mesh holder arranged circumferentially on the mounting post, and a rectangular block arranged on the mounting post. The three-way pipe connects to the two cleaning components. This utility model drives the two dust collection components separately through the drive component, and the dust collection components capture the dirt inside the cleaning components and the cleaning half-cylinder b, thereby reducing the dirt content inside the liquid.

The utility model discloses a kind of ultrapure water preparation systems, it includes total organic carbon on-line analyzer, controller, multi-medium filter, activated carbon filter, filtered water tank, positive bed, decarbonization tower, negative bed, reverse osmosis device, first ultraviolet lamp, primary mixed bed, second ultraviolet lamp, polishing mixed bed and terminal ultrafilter, total organic carbon on-line analyzer is connected with the water outlet of terminal ultrafilter, to detect the total organic carbon in the water production of terminal ultrafilter, controller is connected with total organic carbon on-line analyzer and backwash pump, total organic carbon on-line analyzer can detect the total organic carbon content in the water production of terminal ultrafilter, and backwash activated carbon filter by controller control backwash pump with first backwash period or second backwash period, to make activated carbon filter in bacterial breeding consume small molecule organic matter in water.The ultrapure water preparation system of the utility model embodiment is high in work efficiency, and good in economy.

1. The name of the design product: medium filter (WIFI6E outdoor small base station). 2. The use of the design product: the design product belongs to a frequency selection device, which can make the specific frequency component of the signal pass through, thereby attenuating other frequency components. 3. The design points of the design product: the combination of shape and pattern. 4. The picture or photo that best indicates the design points: perspective view 1.

This invention discloses a wastewater recycling treatment device for automotive touch glass processing, belonging to the technical field of wastewater treatment equipment. It includes a base plate with a replacement assembly and multiple filter assemblies. Multiple filter chambers are employed, each containing a fan-shaped filter screen with different filtration precision. Combined with a multi-media filter for further deep purification, it effectively removes suspended solids and impurities from the wastewater. During filtration, the fan-shaped filter screen can rotate back and forth with an auxiliary circular plate, preventing excessive accumulation of impurities on the screen surface and effectively preventing clogging. This also improves filtration efficiency and service life. Through the cooperation of the replacement assembly and the filter assemblies, automatic clamping, disassembly, and installation of the fan-shaped filter screen can be achieved, significantly reducing maintenance difficulty and time, and improving the continuous operation capability of the equipment.

A kind of low concentration chromium-containing leather wastewater treatment method, comprising the following steps: step one, after adjusting leather wastewater, send into membrane separator and obtain concentrated solution and waste liquid;Step two, send waste liquid into resin adsorption tank, and carry out adsorption recovery to chromium ion;Step three, send concentrated solution into hydrolysis fermentation tank and carry out hydrolysis fermentation;Then send into anaerobic tower and carry out further decomposition;Step four, send concentrated solution of step three into multi-medium filter and treat, the supernatant obtained is sent into resin adsorption tank;The waste of backwashing multi-medium filter is transported to adjusting tank and is treated again;Step five, the wastewater treated after resin adsorption tank is treated biochemically;Step six, resin adsorption tank is treated by desorption, then the pH of desorption waste liquid is adjusted, so that chromium ion is precipitated to obtain chromium precipitation recovery;The present application not only recycles chromium ion in leather wastewater, but also can carry out reduction treatment to leather waste in leather wastewater, reduce the pollution to environment.

The present application relates to a kind of PVA fiber production wastewater treatment method and device.Wastewater is after entering multiple medium filter by homogeneous adjustment pH, reduce the content of suspended solids in wastewater.Multiple medium water production uses ultrafiltration system to reduce the content of suspended solids and colloid.Ultrafiltration water production enters the first reverse osmosis membrane concentration, the first reverse osmosis membrane concentrated water is used to remove hard filter to remove hard, the water production of remove hard filter is used to further concentrate by second reverse osmosis membrane system.Second reverse osmosis membrane concentrated water is after ion concentration deployment system, concentrated water is treated by crystallization, most of crystallization mother liquor is backflowed to ion concentration deployment system, ion concentration deployment water production is further concentrated by third reverse osmosis membrane, third reverse osmosis membrane concentrated water is treated by power plant ash spray, the water production of three reverse osmosis units is further reduced by senior oxidation after reuse.

This utility model relates to the field of water purification technology, and in particular to water purification and filtration equipment for water conservancy projects. It includes a device body comprising an upper body and a lower body fixedly connected vertically, with a filter screen connected between them. A top cover assembly is provided at the upper end of the upper body. Several slots are provided on both sides of the interior of the upper body, and detachable filter plates are arranged between these slots. A rotatable dynamic filter assembly is provided inside the lower body, with one end of the dynamic filter assembly connected to a driving component. The driving component drives the dynamic filter assembly to rotate. A downwardly extending protrusion is fixedly connected to one end of the filter screen. This utility model employs a dual filtration method combining filter plates and a dynamic filter assembly. Compared to traditional single-media filter structures, this method effectively removes impurities and pollutants from water, significantly improving the removal rate of suspended solids and the adsorption efficiency of chemical pollutants.

The invention belongs to the technical field of water treatment, and particularly relates to a method for recycling electroplating rinsing wastewater by ion exchange resin, which comprises the following steps: S01, carrying out quality and flow division on electroplating drainage, and collecting qualified drainage; s02, sequentially adopting a multi-medium filter and activated carbon to filter and pre-treat the qualified discharged water, and collecting pre-treated produced water; and S03, the pretreated produced water is pressurized through a water pump and then sequentially treated through a front cation exchange bed, an anion exchange bed and a rear cation exchange bed, obtained qualified produced water enters a water supply collecting box to be used for supplying water to an electroplating production line, and obtained unqualified produced water returns to the pretreated produced water to be recycled. According to the method for recycling and reusing the electroplating rinsing wastewater through the ion exchange resin, in the wastewater treatment process of the electroplating rinsing wastewater, water can be drained in batches according to different qualities, the drained water with different qualities can be recycled subsequently, the recycling effect is improved, and the recycling rate of the electroplating rinsing water is high.

The utility model relates to the technical field of wastewater treatment equipment, in particular to electroplating wastewater treatment equipment which comprises a cage lifting grating, an adjusting box, a cyanide breaking reaction tank and a comprehensive adjusting tank, a lifting cage grating is placed on the inner wall of the adjusting box through a hook, one side of the adjusting box is connected with a cyanide breaking reaction tank through a water pump and a water pipe, and one side of the cyanide breaking reaction tank is connected with a comprehensive adjusting tank through a water pump and a water pipe. According to the electroplating wastewater treatment equipment, it is ensured that the SDI value can meet the water inlet requirement of the DTRO filter through the multi-medium filter, a reducing agent and an antisludging agent are added into the pipeline mixer, it is ensured that no residual chlorine enters the DTRO filter, it is ensured that no particulate matter larger than 5 micrometers enters the DTRO filter through the security filter, wastewater is fed into the DTRO filter through the plunger pump, and COD, COD and the DTRO filter are subjected to chemical vapor deposition. Pollutants such as heavy metals are separated and removed under the action of the semipermeable membrane, so that the electroplating wastewater treatment equipment performs automatic treatment.

The utility model relates to filter testing device technical field discloses a kind of self-cleaning filter testing device, including first box and second box, air duct is opened in the first box, flow equalizing plate and filter piece mounting portion are sequentially arranged from left to right in the second box, fan mounting portion is installed in the side of the second box, and cleaning assembly is also provided in the second box, for cleaning filter piece, the filter efficiency, resistance, dust capacity of medium filter can be detected under different cleaning water pressure and flow by filter piece mounting portion and cleaning assembly, filter efficiency, resistance, dust capacity of filter after cleaning, when detection is completed, it can directly clean, it is convenient for user operation, solve the problem that the cost of test bench in prior art is higher, and not easy to operate.

The application relates to the field of waste water treatment, and discloses a TFO coupling RO treatment process for high-salt low-COD coal chemical industry waste water. First, the high-salt low-COD coal chemical industry waste water is introduced into a salt-containing waste water adjusting tank to preliminarily pretreat the waste water by adjusting the water volume and the pH value; second, the water out of the adjusting tank is introduced into a flocculation and precipitation tank, a flocculant and a coagulant aid are added into the water to make the particles difficult to precipitate in the water gather each other and form flocculation bodies to precipitate with impurities; then, the supernatant after precipitation is introduced into a targeted Fenton reactor, catalytic ozone is used to generate a targeted active species to realize targeted removal of small-molecule organic matters; next, the water after the targeted oxidation is introduced into a sodium bed system and a reverse osmosis system to remove salts and macromolecular organic matters; finally, the water is further purified through a multi-medium filter to remove micro particles and bacteria which cannot be removed. The water quality of the water out of the application meets the discharge standard.

The invention relates to the technical field of corrosion prevention of circulating water systems of indirect air cooling units of power plants, in particular to a cascade intelligent regulation and control system and method for the water quality of indirect air cooling circulating water. The system comprises an indirect cooling tower, a condenser, a circulating water pump, a first flow regulating valve, a second flow regulating valve, a third flow regulating valve, a multi-medium filter, a fourth flow regulating valve, a desalting purification device, a fifth flow regulating valve, a carbon dioxide gas cylinder, a pressure reducing valve, a sixth flow regulating valve and a water quality online monitoring device. The system can intelligently select different indirect cooling circulating water treatment processes according to the water quality, parameters such as turbidity, conductivity and pH of the indirect cooling circulating water are controlled within target value ranges, the water quality is kept stable for a long time, and corrosion of the indirect air cooling circulating water system is effectively inhibited.

The utility model discloses a multi-medium filter for water treatment, which belongs to the technical field of water treatment and comprises a shell, a support frame is mounted on the inner bottom wall of the shell, a support plate is fixed at the top of the support frame, a filter cartridge II and a filter cartridge I are respectively mounted at the top of the support plate from the center to the outside, and the filter cartridge I is sleeved on the outer side of the filter cartridge II. A sealing cover and a supporting plate are movably installed on the top of the shell, a limiting assembly is arranged between the sealing cover and the second filter cylinder, an outlet pipe is installed in the middle of the supporting plate in a penetrating mode, an inlet pipe is installed on one side of the shell, and a motor is installed on the inner bottom wall of the shell. According to the device, large-particle impurities can be cleaned in time, the through opening is intermittently shielded through the rotating sealing plate and the fixing opening, and impurities and sewage at the top of the baffle ring are pushed to be discharged to the bottom of the baffle ring, so that the cleaning efficiency is higher, rapid cleaning can be performed in the filtering process, the influence on the filtering work is reduced, and the practicability is high. Therefore, the practicability of the water treatment multi-medium filter is improved.

The invention discloses a double-filter-material filter and a using method, and belongs to the technical field of filtering equipment, the double-filter-material filter comprises a shell, nitrogen is firstly introduced from a nitrogen inlet in the upper part of the shell to push hydrocarbon liquid to be subjected to cyclone separation, a hydrocarbon liquid collecting opening is used for collecting liquid, a medium separates dirt through rotating fluid, nitrogen is firstly introduced to play a safety protection replacement role, and the nitrogen is introduced into the shell to play a role in separation; the nitrogen gathers in the middle due to cyclone separation and generates upward airflow to disturb the filler; and the filter material in the filter is loosened, cut-off matters adhered to the surface of the filter material can be stripped and taken away by subsequent backflushing water flow, sediment, suspended matters and the like in a filter layer are favorably removed, the filter material is prevented from being hardened, and the sewage interception capability of the filter material is fully recovered, so that the aim of cleaning is fulfilled. The hydrocarbon liquid collecting port is arranged, so that hydrocarbon liquid can directly enter the oil collecting tank instead of entering the water collecting tank, and the device is energy-saving, safe, convenient to clean and labor-saving and time-saving.

The invention relates to a method for filtering a coarse particle slurry to obtain a filtered coarse cake, the coarse particle slurry having a particle size distribution wherein at least 90% of the particles of the coarse particle slurry have a size larger than 25 pm. The method is carried out by a filter device (14) comprising a filter pan (26), and comprises, for each filter cell (48) of the filter pan (26), a treatment cycle comprising: - discharging the coarse particle slurry on top of the filter cell (48); - applying a pressure difference between an inner volume and the exterior of the filter cell (48), so that a liquid of the coarse particle slurry is led towards the inner volume of the filter cell (48) and so that the filtered coarse cake is obtained on top of the medium filter.

The utility model discloses an on-line reverse osmosis cleaning device, aims to provide an on-line reverse osmosis cleaning device capable of effectively cleaning a reverse osmosis device, and adopts the technical scheme that the on-line reverse osmosis cleaning device comprises a raw water tank, a multi-medium filter is connected onto the raw water tank, a first security filter is connected onto the multi-medium filter, and a second security filter is connected onto the first security filter. The first security filter is connected with a reverse osmosis machine, an outlet of the reverse osmosis machine is also connected with a pure water tank, and the reverse osmosis machine is also provided with a cleaning device.

The utility model provides water washing and salt extracting equipment for cement and kiln dust. Comprising the following equipment units which are connected through pipelines: a kiln dust bin, a kiln dust washing storage tank, a washing suction filter, a primary impurity removal reactor, a secondary impurity removal reactor, a multi-medium filter, a multi-effect evaporation crystallization system, an evaporation feeding buffer tank, a dead steam condensate water preheater, a steam condensate water preheater, a crystal thickener, a centrifugal machine and a saline water tank, harmless treatment of the high-chlorine kiln dust is achieved through a water washing-impurity removal-evaporation full-process closed-loop system, and the kiln returning rate of the ash is increased; a two-stage condensate water waste heat recycling technology is innovated, the steam energy consumption is reduced by 60% or above, the water resource circulation rate reaches 90%, and environmental protection compliance and resource economic benefits are achieved.

1. Name of the design product: Multi-media filter. 2. Use of the design product: For the filtration system of pool water treatment. 3. Design key points of the design product: Lies in the shape. 4. Picture or photo that best shows the design key points: Perspective view.

The present invention relates to the technical field of sewage treatment, in particular to a backwashing multi-media filter device, comprising a flushing component, including a tank body, a sewage outlet, a water outlet and a water pipe; a driving component, including a filter layer, a servo motor, a flushing column arranged inside the filter layer, a moving column arranged on the inner wall of the flushing column and a spray column arranged on the inner wall of the flushing column; the present invention drives the lower connecting disk to rotate slowly by the servo motor, and the connecting disk drives the water pipe to rotate below the filter layer, and sprays water from the bottom of the filter layer into the filter layer through the water spray port on the surface of the water pipe, and cooperates with the backwashing water flow to flush the filter material at the bottom of the filter layer, while the servo motor rotates, the flushing column inside the filter layer rotates together, and the spray column on the surface of the flushing column will intermittently open, spraying out vortexes to further flush the filter material of that layer, separating impurities from the filter material, and finally discharging the impurities through the back-impact water flow at the bottom, thereby improving the efficiency of sewage treatment.

The utility model discloses a wastewater regeneration treatment device for organic sodium sulfonate production, which relates to the technical field of wastewater treatment and comprises a pretreatment tank, a water outlet of a multi-medium filter is fixedly communicated with an ultrafiltration device, and a water outlet of the ultrafiltration device is fixedly communicated with an electrodialysis device. One side of the electrodialysis device is respectively provided with a fresh water pipe and a concentrated water pipe, one end of the fresh water pipe is fixedly communicated with a reverse osmosis device, the surface of the reverse osmosis device is provided with a reverse osmosis fresh water outlet, one end of the concentrated water pipe is fixedly communicated with an evaporation device, and the evaporation device is provided with a discharge port. And besides that alkali is added into the pretreatment tank to adjust the pH value, no other dangerous chemical substances are introduced in the production process, so that the stability of salt balance in water is ensured, the equipment basically realizes full automation, is safe and reliable, and the safety of field staff is ensured. And compared with a traditional treatment method, the wastewater discharge amount is greatly reduced, the high-salinity wastewater treatment cost of enterprises is reduced, and the method is convenient to use.