339 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.

The system comprises a raw water tank, a multi-medium filter, a bag filter, a plate heat exchanger, an ultrafiltration device, an ultrafiltration water tank, a primary reverse osmosis device, a secondary reverse osmosis device, a UV (ultraviolet) sterilization device, an EDI (electrodeionization) device, a TOC (total organic carbon) remover, a polishing mixed bed and a terminal filter which are sequentially connected, the RO concentrated water tank is connected with the reverse osmosis concentrated water outlet ends of the primary reverse osmosis device and the secondary reverse osmosis device, the electric driving membrane device is connected with the RO concentrated water tank, and the drainage concentrated water tank is connected with the electric driving membrane device. The reverse osmosis (RO) and electrodeionization (EDI) combined process adopted in the invention comprehensively solves a series of problems of acid and alkali consumption, environmental pollution, poor automation degree, complex system and the like in ultrapure water production. The process equipment disclosed by the invention is relatively high in automation degree, saves the cost required by acid-base regeneration, and does not cause any pollution to the environment.

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 pig farm reclaimed water recycling system with multiple application scenes, which comprises a pretreatment device, a reverse osmosis device, a first recycling device, a disinfection device and a second recycling device which are connected in sequence, the pretreatment device comprises a full-automatic multi-medium filter and an ultrafilter which are connected in sequence; the reverse osmosis device comprises a scale inhibitor, a precision filter and a reverse osmosis membrane assembly which are connected in sequence, and the ultrafilter is connected with the scale inhibitor; the first recycling device comprises a first water storage tank, and the first water storage tank is connected with the reverse osmosis membrane assembly. The utility model overcomes the key core problem of hindering the reuse of reclaimed water in a large-scale farm, provides a feasible technical scheme for the industry, and not only can relieve the water pressure of the pig farm, but also can save clean water resources.

The invention provides a circulating blow-down water treatment device and process based on a crystallization and granulation fluidized bed coal-fired power plant. The device comprises a cooling tower pool, a multi-medium filter, a crystallization and granulation fluidized bed, a circulating blow-down water buffer pool, a high-density clarification pool, a plug flow channel, a variable-porosity filter pool, a clarification water pool, a self-cleaning filter, an ultrafiltration device, an ultrafiltration water tank, an ultraviolet sterilizer, a security filter and a reverse osmosis device which are connected in sequence. According to the scheme, by introducing induced crystallization for hardness removal and synergistic silicon removal, deep precision treatment can be performed on the circulating sewage, quality-divided recycling is realized, and gradient utilization of water resources is realized; in addition, in the treatment process, the use of chemicals polluting the environment is reduced, the entry of chlorine radicals is avoided, and the great increase of the amount of the recycled desulfurization wastewater is effectively reduced.

The invention discloses a low-temperature multi-effect evaporation-based impurity salt treatment process method, and relates to the technical field of industrial waste salt treatment in the chemical industry. According to the scheme, firstly, impurity salt is dissolved and then pretreated by a fluorine removal tank and a multi-medium filter, and pretreated saline water is obtained; then, organic matters and dissolved substances are removed through a catalytic oxidation and nanofiltration device, and a monovalent salt solution and a divalent salt solution are separated out; then, the monovalent salt solution is subjected to reverse osmosis concentration and then enters a low-temperature multi-effect evaporation system for sodium chloride crystallization, and the divalent salt solution is subjected to catalytic oxidation and then enters low-temperature multi-effect evaporation for sodium sulfate crystallization. And finally, the mother liquor subjected to low-temperature multi-effect evaporation is refluxed and retreated, and resources are further concentrated. According to the invention, the waste salt treatment efficiency is effectively improved by optimizing the chemical addition of the sedimentation tank. By adopting a low-temperature multi-effect evaporation technology, the energy efficiency is optimized, the energy loss is reduced, the crystallization efficiency is improved, and the resource recovery rate is increased. And a mother liquor backflow retreatment mechanism reduces waste liquid discharge and reduces environmental burden.

The utility model relates to a waste incineration fly ash washing wastewater treatment system, which comprises a raw water tank for collecting fly ash washing wastewater; the heavy metal removal reaction tank is used for removing heavy metals from the wastewater to obtain a mud-water mixture, and carrying out solid-liquid separation on the mud-water mixture to generate heavy-removed water; the hardness removal reaction tank is used for removing calcium and magnesium ions from the heavy water to obtain a mud-water mixture II and carrying out solid-liquid separation to generate softened water and calcium carbonate sludge; the pH adjusting barrel is used for adjusting the pH of the softened water to generate reclaimed water; the COD removal system is used for removing COD in the reclaimed water; the multi-medium filter is used for filtering the COD-removed water to obtain filtered water; the ultrafiltration equipment is used for filtering the filtered water to obtain ultrafiltration permeate liquid; the nanofiltration equipment is used for carrying out nanofiltration on the ultrafiltration permeate liquid, and chlorine salt enters separation membrane permeate liquid; and the evaporative crystallization equipment is used for evaporating and concentrating the separation membrane permeate to generate sodium chloride and potassium chloride. The device disclosed by the utility model can efficiently remove COD (Chemical Oxygen Demand) and heavy metals, reduce calcium ions in washing wastewater and ensure the quality of subsequent evaporative crystallization products.

The invention provides a backwashing multi-stage water treatment filtering and purifying method and system, the method is used for filtering industrial sewage and then recollecting and reusing, and the method comprises the following steps: discharging gas in a filtering tank out of the tank and then closing an exhaust port; sewage to be filtered enters from the water inlet, is filtered by the multi-layer medium filtering layer and is discharged from the water outlet; various parameters in filtering are monitored, and under the condition that the remote control single chip microcomputer controls the pressure difference of each filtering tank to be within a pressure difference threshold value, it is guaranteed that filtered water discharged from a water outlet meets the turbidity requirement in the drainage standard; when the pressure difference in a certain filtering tank exceeds a pressure difference threshold value, backwashing the corresponding filtering tank; and after the back washing is finished, the forward filtering step is repeated again. The optimal flow velocity of the water inlet and the optimal flow velocity of the water outlet are obtained through learning optimization, and then it is guaranteed that sewage at the water outlet meets the turbidity requirement in the drainage standard. Meanwhile, when the pressure difference in a certain filtering tank exceeds a pressure difference threshold value, the filtering tank can be backwashed.

The utility model relates to the technical field of filters, in particular to a multi-medium filter which comprises an outer cylinder, a top cover arranged at the top of the outer cylinder, a drain pipe arranged at the bottom of the outer cylinder and communicated with the inside, a water guide pipe arranged at one end of the drain pipe extending into the inside, an intercepting component arranged above the water guide pipe, and a filter box arranged in the outer cylinder and close to the top, activated carbon adsorption cotton is arranged in the middle of the filter box, a water inlet pipe is arranged in the middle of the top of the top cover, and a valve is arranged at the tail end of the drainage pipe; according to the multi-medium filter, the outer cylinder is arranged to be matched with the top cover, internal protection matching is achieved, the filtering box with activated carbon adsorption cotton is arranged at the top of the interior of the outer cylinder to preliminarily filter an entering water body, and multi-layer multi-medium filtering matching is achieved through a first sponge mat, a second sponge mat and a third sponge mat under matching of the intercepting assembly; a water guide pipe is matched with a water drainage pipe to guide and discharge filtered water, and the tray with pulleys is matched, so that the overall flexible movement and matching are facilitated.

The invention relates to a PVA fiber production wastewater treatment method and device. The wastewater enters a multi-medium filter after being homogenized to adjust the pH, so that the content of suspended solids in the wastewater is reduced. And the content of suspended matters and colloids in multi-medium produced water is reduced by adopting an ultrafiltration system. Ultrafiltration produced water enters a first reverse osmosis membrane to be concentrated, first reverse osmosis membrane concentrated water is subjected to hardness removal through a hardness removal filter, and produced water of the hardness removal filter is further concentrated through a second reverse osmosis membrane system. After second reverse osmosis membrane concentrated water passes through an ion concentration allocation system, crystallization treatment is conducted on the concentrated water, most crystallization mother liquor flows back to the ion concentration allocation system, ion concentration allocation produced water is further concentrated through a third reverse osmosis membrane, and power plant ash spraying treatment is conducted on third reverse osmosis membrane concentrated water; and the produced water of the three reverse osmosis units is recycled after COD is further reduced through advanced oxidation.

The utility model discloses a stirring type multi-media filter, which belongs to the technical field of stirring type multi-media filters, and is characterized by comprising a filter box, mounting blocks are fixedly connected to the front side and the rear side of the inner wall of the filter box, dismounting assemblies are clamped to the inner walls of the mounting blocks, and filter screens are clamped to the inner walls of the dismounting assemblies. The bottom of the filter box is fixedly connected with a stirring type multi-medium filter body, the left side of the filter box is communicated with a connecting pipe, and the problems that most of the water inlet ends of existing stirring type multi-medium filters do not have pretreatment structures, so that large floating objects in wastewater easily enter the stirring type multi-medium filters, and waste water is polluted are solved. And when large floating objects enter the stirring type multi-medium filter, the filtering medium is easy to block and a stirring device is easy to damage, so that the filtering performance of the stirring type multi-medium filter is reduced, and most pretreatment structures are inconvenient to disassemble.

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 relates to the technical field of water treatment and purification, and discloses a multi-media filter, including a filter medium replacement device, wherein the bottom of the filter medium replacement device is threadedly connected to a siphon base device, and a nut at one end of the top of the siphon base device is connected to multiple filtering devices. A filter medium replacement device is provided, and the current is changed by changing the water pressure to break the circuit, and the fixation of the filter medium is cancelled for replacement, which is beneficial to avoid the problem that multiple media in the multi-media filter are difficult to replace due to adhesion. A siphon base device is provided at the bottom of the water pipe, and suction is generated by moving the piston upward to suck water from the bottom to the top to flush away impurities that block the filter material and discharge it out of the device, so as to solve the problem that when filtering water, the filter medium is blocked and the influence on the water source filtration is produced. Multiple filtering devices are provided, and multiple filtering is performed until the need is met, which is beneficial to solve the problem that traditional multi-media filters are sensitive to water quality.

The invention provides a treatment method and system for directly recycling wastewater of a medium-high pressure boiler, and the method comprises the following steps: the wastewater of the medium-high pressure boiler enters a collecting and regulating tank after being discharged, and then is fed into a heat exchanger through a booster pump; the treated wastewater enters a coagulation clarifier through system residual pressure, floc is formed, and effluent is clarified; feeding clarified effluent into a multi-medium filter through a booster pump; water produced by the multi-medium filter is fed into an ultrafiltration system; effluent of the ultrafiltration system enters a secondary reverse osmosis system, and fresh water produced by the secondary reverse osmosis system is fed into an EDI device through a booster pump to be treated; and pure water produced by the EDI device enters the mixed bed through system residual pressure, is subjected to fine desalination through ion exchange, and then is fed into a high-purity water tank of a user to be used as inlet water of a middle-high pressure boiler. The invention develops a full-flow treatment process aiming at the special water quality condition of the wastewater of the medium-high pressure boiler, and the finished water can stably meet the strict water quality requirement of the water supplied by the medium-high pressure boiler.

The invention relates to the technical field of wastewater treatment, and discloses a recycling washing water treatment process of sodium chloride high-salinity wastewater, which comprises the following steps: step 1, a pretreatment stage: recycling washing water with a pH value range of 6-9 and main solutes of NaCl and Ca < 2 + lt >; 350mg / L, Mg < 2 + lt >; the method comprises the following steps: introducing washing water with the concentration of 350mg / L and the TDS of more than 100g / L into a multi-medium filter, removing impurities in the washing water through a multi-layer filtering structure by utilizing the adsorption and interception effects of a filtering medium, and controlling the filtering speed to be 8-12m / h; and step 2, a hardness removal stage: the water treated by the multi-medium filter enters a hardness removal resin device, and strong-acid cation exchange resin is adopted to carry out ion exchange reaction with Ca < 2 + > and Mg < 2 + > in the water to remove calcium and magnesium ions in the water. And in the hardness removal process, the flow speed is controlled to be 4-6 m / h. Water resources and salt in washing water are fully separated and recycled, no by-product pollutant is discharged into the environment, pollution to soil, water and atmosphere is greatly reduced, and balance of the ecological environment is protected.

The utility model discloses a multi-media filter with a self-cleaning function, which belongs to the technical field of multi-media filters, and comprises a multi-media filter body, the inner wall of the multi-media filter body is fixedly connected with a fixed disc, the top of the fixed disc is communicated with a filter cap, and the filter cap is fixedly connected with the fixed disc. The top of the fixing disc is fixedly connected with a limiting rod, the top of the multi-media filter body is fixedly connected with a sealing plate, and the problems that most existing multi-media filters do not have a self-cleaning function, so that the inner walls of the multi-media filters are inconvenient to clean, and after filter materials are used for a long time, the inner walls of the multi-media filters cannot be cleaned easily are solved. In the prior art, particulate matters, suspended matters and the like adsorbed on the surface of a filter material are easily adhered to the inner wall of the multi-medium filter due to the contact between the filter material and the inner wall of the multi-medium filter, and the inner wall of the multi-medium filter is easily scaled for a long time, so that the filtering performance of the multi-medium filter is reduced in subsequent use.

The multifunctional water purifier comprises an outer shell, a microcomputer controller is installed in the outer shell, a waterway control assembly comprises a first low-voltage switch installed at a water inlet of the outer shell, the first low-voltage switch is electrically connected with a water inlet electromagnetic valve, and the water outlet end of the water inlet electromagnetic valve is connected with a filtering mechanism; the filtering mechanism comprises a PE filter element and a multi-medium filter element, the water outlet end of the high-pressure water pump is connected with an RO membrane filter, the water outlet end of the RO membrane filter is connected with a three-water-outlet combined water nozzle through a first high-pressure switch, the water outlet end of the RO membrane filter is connected with a waste water flushing electromagnetic valve, and the three-water-outlet combined water nozzle is connected with the electrolytic bath, so that purified water can be provided, and the water quality of the electrolytic bath is improved. The water purifier is simple in structure, convenient to operate and capable of preparing electrolyzed reduced water and oxygen-enriched disinfectant fluid, the requirements of users for various functional water are met, different types of water can be prepared through convenient switching in the same equipment, and the problems that an existing water purifier is single in function and cannot meet diversified water requirements are effectively solved.

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.

The utility model discloses a multi-stage multi-medium filter and belongs to the technical field of filters. A multi-stage multi-medium filter comprises a main filter shell and two auxiliary filter shells, circulating pipes are installed between the main filter shell and the auxiliary filter shells, pneumatic pumps are installed at the rear ends of the auxiliary filter shells, and air valves are installed between the pneumatic pumps and the auxiliary filter shells. The multi-medium filter solves the problems that in the actual using process of an existing multi-medium filter, the water filtering mode is single, and the filtering effect cannot be improved, multi-medium filtering work is conducted through the kieselguhr and the glass fiber cloth in the auxiliary filter shell, filtered clean water flows into the water outlet pipe through the water guiding channel, and the water quality is improved. And the sewage which is not completely filtered can be compressed through the pneumatic pump, so that the sewage enters the circulating pipe under the pressure, and then is secondarily filtered through the filter element, the filtering effect is improved, and long-term work is facilitated.

The invention belongs to the technical field of glass flue gas wastewater treatment, and discloses a glass substrate cullet flue gas wastewater treatment system and a glass substrate cullet flue gas wastewater recycling method.The glass substrate cullet flue gas wastewater treatment system comprises a chlorination and denitrification device, a chlorine spraying device and a filtering device; the adding amount of sodium hypochlorite is adjusted through a sodium hypochlorite adding pump, sodium hypochlorite and cullet flue gas wastewater are fully mixed under the action of aeration of an aeration pipeline at the bottom of the denitrification reaction tower and a stirrer at the top of the denitrification reaction tower, ammonia nitrogen in the cullet flue gas wastewater reacts, and ammonia nitrogen is removed. And powder scraps are removed through filtering of a filtering material in a multi-medium filter in the filtering device, so that filtering is realized. Under the action of the spraying device, the adding amount of sodium hydrogen sulfite entering the spraying tower is controlled by adjusting the adding pump, excessive sodium hypochlorite is removed, chlorine is generated, and the technical problem that in the prior art, after ammonia nitrogen is removed, water resources are wasted due to direct discharging is solved.

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 invention discloses boiler make-up water treatment equipment and a cleaning method for the boiler make-up water treatment equipment. The boiler make-up water treatment equipment comprises a clarification tank, a variable-porosity filter tank, a raw water heater, a raw water tank, a double-medium filter, an ultrafiltration security filter, an ultrafiltration device, an ultrafiltration water tank, a reverse osmosis security filter, a first-stage reverse osmosis system, a first-stage fresh water tank, a second-stage reverse osmosis system, a second-stage fresh water tank, a mixed bed and a demineralized water tank which are sequentially connected through pipelines, wherein the first-stage reverse osmosis system and the second-stage reverse osmosis system are connected with a cleaning device; the cleaning method comprises the steps of cleaning device starting, water washing, alkali washing, acid washing and waste liquid treatment. The method is easy to operate, high in practicability and good in effect, according to the water quality of a water source and the pollution conditions of the cartridge filter element and the membrane element, the cleaning flow is increased, corresponding agents are added for cleaning, and the good cleaning effect can be achieved.

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 invention relates to the field of underground mine water treatment, in particular to an advanced treatment device for underground high-salinity and high-hardness mine water. The device comprises a regulating tank, an aeration oxidation tank, a flocculation sedimentation tank, a buffer tank, a self-cleaning filter, a multi-medium filter, a manganese sand filter, an intermediate water tank, a security filter, a reverse osmosis device, a water producing tank, a compressed air device, an oxidant dosing tank, a flocculation dosing tank, an oxidant dosing pump and a flocculation dosing pump. According to the device, mine water with high salt content and high hardness can be treated in situ underground, dissolved salt and calcium and magnesium ions in the mine water can be effectively removed, and the quality of produced water is stable. Meanwhile, water produced by the device can reduce scaling of underground water equipment, the water equipment is prevented from being corroded, and the service life of the equipment is prolonged.

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.