93 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.

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.

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 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.

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.

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 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.

To provide a recycling treatment system and method for integrated circuit LSR wastewater.SOLUTION: The wastewater treatment system includes a collection pond, a pH adjustment pond, a first intermediate water pond, a multimedia filter, a carbon-based filter, a first heat exchanger, a second intermediate water pond, a cation exchange tower, an anion exchange tower, a water supply pond, a microfiltration filter, and a second heat exchanger in order according to a process flow. The wastewater treatment system and method have high efficiency, a simple system structure, a small site area, and no secondary pollution to the environment, and are convenient for large-scale industrial promotion and application. In particular, two layers of light filter media are arranged in the multimedia filter, so that the filtering effect is better, the large-resistance drainage system is saved, the carbon-based material in the carbon-based filter can activate the persulfate, the hot wastewater can activate the persulfate, a synergistic effect can be generated, and the efficiency of decomposing the organic matter is higher when the dosage of the persulfate is reduced.SELECTED DRAWING: Figure 1

The invention relates to the technical field of boiler feed water, in particular to a boiler feed water treatment system. Comprising a clarification tank and a clarification water tank which are connected in sequence, and the clarification water tank is connected with a filtering unit; the filtering unit comprises a multi-medium filter, a disc filter, an ultrafiltration device and an ultrafiltration water tank which are connected in sequence, and the ultrafiltration water tank is connected with the membrane separation unit; the membrane separation unit comprises a first-stage reverse osmosis device, a first-stage fresh water tank, a second-stage reverse osmosis device and a second-stage fresh water tank which are connected in sequence, and the water inlet end of the first-stage reverse osmosis device is connected with the water outlet end of the ultrafiltration water pump; the deep desalting unit comprises an EDI device and a desalting water tank which are sequentially connected, and the water outlet end of the desalting water tank is connected with the water supply end of the boiler. According to the system provided by the invention, the whole-process treatment of pretreatment, multi-stage filtration, membrane separation and deep desalination is carried out on raw water, the effluent quality meets the water supply requirement of an ultrahigh-pressure unit boiler, the treatment efficiency is high, and the energy consumption is low.

The utility model belongs to the technical field of environmental protection equipment, and particularly relates to an integrated multi-medium filtering type rainwater recycling device which comprises an installation cabinet, a multi-medium filter and a dosing assembly which are connected through a pipeline are arranged in the installation cabinet, and the multi-medium filter is provided with a water inlet pipe and a water outlet pipe. The dosing assembly comprises a clarifying agent tank and a long-acting disinfectant tank, the clarifying agent tank is connected with the water inlet pipe through a pipeline, and the long-acting disinfectant tank is connected with the water outlet pipe through a pipeline. According to the present invention, the filtration effect is improved, the floor area is reduced, the adopted clarifying agent is added in front of the filter, the clarifying agent enables the impurities in the rainwater to form the aggregated large flocs before entering the filter so as to improve the filtration effect, the long-acting disinfectant is added after the water passes through the filter, and the long-acting disinfectant adopts the chlorine preparation so as to achieve the long disinfection effect lasting time.

The present application relates to a kind of pure water generating device for detergent, including raw water tank, booster pump, multi-medium filter, activated carbon filter, softener, security filter, high-pressure pump, reverse osmosis device, purified water tank and sterilization device.The device also includes backwash tank and backwash pump, backwash tank is connected with activated carbon filter, backwash pump is connected with backwash tank, and limit net rack, upper support net rack and lower support net rack are sequentially and spacedly arranged in the tank body of multi-medium filter from top to bottom;Manganese sand filter material is filled between limit net rack and upper support net rack, and quartz sand filter material is filled between upper support net rack and lower support net rack;Backwash pipe is communicated with the bottom of tank body;Drain pipe is connected to the side of tank body, and drain valve is installed on the drain pipe;The pure water device of the application is provided with vibration device, and better backwash effect can be achieved by differential vibration and water flow scouring, and automatic backwash can be realized without manual operation.

This application relates to a nanofiltration membrane pretreatment method and system for treating cellulose ether wastewater, belonging to the technical field of wastewater pretreatment. The pretreatment method includes micro-electrolysis-coagulation reaction, sedimentation separation, dynamic membrane filtration, and deep purification. The pretreatment system includes a mixing reaction tank, a sedimentation tank, an intermediate water tank, a multi-media filter, a security filter, and a nanofiltration membrane device. This application enhances the depolymerization and flocculation effects, improves sedimentation separation efficiency, and constructs a highly efficient deep adsorption barrier before the membrane, thereby reducing the pollution index of the nanofiltration influent, extending the nanofiltration membrane cleaning cycle and service life, and achieving low-cost, high-efficiency wastewater treatment.

A water filter comprising a cylindrical pressure vessel for receiving a multi-layer particulate filter medium. The filter further comprises an inlet through which water to be filtered is introduced into the vessel. The inlet comprises a conduit which enters via the cylindrical side wall of the vessel and extends through the filter medium until it reaches the central axis of the vessel. At the central axis the conduit is bent and extends upwards as a central portion, and at a location above the filter medium the central portion branches into at least two spaced apart arms, each of which is provided at its free end with a jet outlet for introducing water in use into a body of water above the filter medium. Each jet outlet has a substantially different radial spacing from the inner surface of the cylindrical side wall.

The present application relates to sewage treatment technical field, and disclose a kind of modular humus filler filter tank, sewage treatment system and processing method, including by upper to lower interfitting after being communicated water tank, several groups of filter tank and water collecting tank, center tube assembly is equipped between water tank, several groups of filter tank and water collecting tank middle part, filter seat is also equipped with loose material assembly, blade rotating assembly is equipped in center tube assembly, loose material assembly inside end is extended to center tube assembly after closely adhering to rotating ring side edge on blade rotating assembly;The present application utilizes airflow kinetic energy to drive blade rotating assembly to rotate and link loose material assembly, without motor and other equipment, reduce operating cost and failure risk.Oxygen is supplied for microorganism, and loose material is also driven, so that air is diffused to humus filler layer, solve the problem of traditional filter tank "local oxygen supply uneven, microorganism activity difference is big", improve purification efficiency, solve odor problem simultaneously, and multifunctional integration is high.

This invention relates to the field of water treatment technology, and more particularly to a method and system for treating coking nanofiltration concentrate. The method includes: pre-configuring a modified nickel plate anode electrode, a modified titanium plate cathode electrode, and multi-media filter media according to the water quality characteristics of the coking nanofiltration concentrate; feeding the coking nanofiltration concentrate into an electrocatalytic oxidation device for treatment, wherein the electrocatalytic oxidation device uses the modified nickel plate anode electrode as the anode electrode and the modified titanium plate cathode electrode as the cathode electrode; and pumping the effluent from the electrocatalytic oxidation device into a multi-media filter for filtration, wherein the multi-media filter contains multi-media filter media. By first subjecting the coking nanofiltration concentrate to electrocatalytic oxidation treatment, Cl... ‑ The anode loses electrons and is oxidized, producing a large number of active chlorine and other free radicals, which can rapidly degrade ammonia nitrogen. This allows relatively stable substances to react, and then a multi-media filter is used for filtration, which can economically and efficiently remove COD and ammonia nitrogen from coking nanofiltration concentrate.

The utility model provides a coal-fired power plant high-low brine advanced treatment and recycling system which comprises an industrial wastewater storage pool, wherein water outlets of the industrial wastewater storage pools are connected with a main water outlet pipe through automatic valves, and the main water outlet pipe is sequentially connected with the PH adjusting tank, the reaction tank, the flocculation tank, the clarifier, the clean water pool and the final neutralization pool through a first lifting pump; the mixed bed regeneration wastewater high-salinity water is sequentially fed into a multi-medium filter for filtration, a self-cleaning filter, an ultrafiltration device and an ultrafiltration water tank through a lifting pump II and is fed into an ultraviolet sterilizer through a lifting pump III, and a water outlet of the ultraviolet sterilizer is connected with a security filter; a water outlet of the security filter is connected with the reverse osmosis device through a high-pressure pump; a fresh water outlet on the reverse osmosis device is connected with a fresh water tank and a concentrated water outlet is connected with a concentrated brine tank. According to the utility model, backwashing water and low-salt water are directly recycled to a desulfurization system after being filtered by the iron and manganese removal filter. And the mixed bed regeneration wastewater high-salinity water is discharged and treated by seawater reverse osmosis, so that recycling is achieved.

The invention relates to the technical field of wastewater treatment, in particular to a calcium ammonium nitrate wastewater treatment device and method.The device comprises a PH adjusting tank, a buffer tank, a heat exchanger, a multi-medium filter, a precision filter, a ceramic filter, an ultrafiltration device, a concentration reverse osmosis device, a desalination reverse osmosis device, a concentrated water reverse osmosis device and wastewater discharge system equipment; the multi-medium filter comprises a filter tank body, a fiber ball filter material layer is arranged in the filter tank body, and a liftable compression frame and bearing frame structure is arranged; the compression frame moves along the vertical guide pipe through a magnetic force driving mechanism, compresses the fiber balls to form a gradient pore structure during filtration, and moves upwards to release the fiber balls and trigger the dispersion frame to unfold during backwashing so as to assist in loose cleaning of the fiber balls; the compression frame is sleeved on a vertical guide pipe in the filter tank body in a lifting manner, and the bearing frame is movably hoisted at the bottom of the guide pipe; the device disclosed by the invention can efficiently realize graded purification and resource recovery.

The present invention relates to a mineral control and ionisation system for purifying seawater comprising: a seawater or raw water influent inlet pipe; an ozone generator for injecting ozone into the water inlet pipe; a solids filtration assembly formed by a first filter configured to remove suspended solids and settleable solids in the water, humic and fulvic acids, various volatile organic compounds, fats and proteins, and agrochemicals, and to eliminate odour and colour in the water; a second organic cation resin filter configured to negatively recharge the cation resin and sequester 45% of all minerals formed by carbonate salts and dissolved solids, and to control the total dissolved solids (TDS) and the total seawater hardness; and a third multimedia filter with bituminous activated carbon configured to remove odour, flavour, chemical residues and colour (crystallisation) that may remain in the water, and to positively recharge the ions in the water. The system also comprises an assembly of magnetic conditioners configured to generate a magnetic field which moves the salts from their equilibrium point and modifies the physicochemical properties of the water; a reverse osmosis module where the levels of electrical conductivity, TDS, total hardness and pH are periodically controlled by reject and recirculation meters; and a UV light and / or ozone and / or quantum alumina exposure means configured to purify water coming from the reverse osmosis module, in compliance with international and Mexican regulations on treated water for human use and consumption. The system further comprises a treated water storage and holding tank configured to prevent the formation of algae, bacteria and cyanobacteria using ultrasonic equipment that emits sound waves at different frequencies, propagating at speeds of 2,000 m / sec, thus preventing blue-green algae growth in the stored water; a magnetic conditioner that controls the minerals in the stored water; an automated control board to