Hybrid Reverse Osmosis for Water Filtration

A new type of water purifier that prevents waste of purified water in pipes. It includes a raw water pump, an ultrafiltration membrane, a reverse osmosis membrane, and storage tanks connected by valves and pipes. The raw water enters, gets filtered, and then goes through reverse osmosis. The purified water flows to storage tanks instead of directly to equipment. Circulation pumps recirculate water between storage tanks and equipment. This prevents stagnant water in pipes and equipment, reducing waste.

Source

A drinking water purification system with multiple storage tanks to prevent back pressure damage to the reverse osmosis membrane. The system has separate tanks for storing purified water. The raw water is treated with multimedia, carbon, and precision filters before going through the reverse osmosis process. A high-pressure pump feeds the reverse osmosis membrane. The purified water goes into one tank, and when that tank is low, water is transferred to the other tank to maintain pressure. This prevents back pressure on the reverse osmosis membrane when the downstream tank is empty.

Source

A system and method for treating water using reverse osmosis (RO) and nanofiltration membranes allows high recovery rates without additional stages or pumps. It uses a two-mode process with a concentrate accumulator. In the first mode, feedwater is pumped through the RO unit, and the concentrate is stored at low pressure. In the second mode, the concentrate is drained while still pumping feedwater and recycled permeate through the RO unit. This maintains constant flow rates and pressures to achieve high recovery without requiring extra stages or pumps.

Source

Efficient water treatment system using reverse osmosis filtration to reduce water waste and improve resource utilization. The system involves multiple stages of reverse osmosis filtration with recirculation and reuse of concentrated water. It includes devices like softening, pumps, tanks, valves, and gauges to filter and treat water at different purity levels. The recirculation loop allows recovering and reusing some of the concentrated water discharged from each filtration stage. This reduces water waste compared to directly discharging all concentrated water.

Source

A compact, cost-effective, and easy-to-use water treatment system that provides safe and clean drinking water for domestic and industrial applications. The system has four modules: pre-treatment, reverse osmosis, post-treatment, and UV disinfection. The pre-treatment removes solids, organic matter, and chlorine. Reverse osmosis removes dissolved impurities. Post-treatment adjusts pH and adds minerals. UV disinfection provides final disinfection. This combined treatment addresses a wide range of contaminants for reliable purification.

Source

High recovery desalination system that combines nanofiltration (NF), reverse osmosis (RO), and forward osmosis (FO) to purify water from saline sources like seawater. The system uses an NF membrane to pretreat the feedwater and improve recovery. The NF permeate then goes through RO for final desalination. The reject from both NF and RO is sent through FO to concentrate the brine before disposal.

Source

Hybrid electrochemical and membrane-based water treatment systems can effectively remove silica from water with varying concentrations to produce ultra-pure water. The systems involve a sequence of treatment steps, including bulk demineralization through electrodialysis reversal, high recovery reverse osmosis, and final polishing by electrodeionization. The specific treatment steps and configurations are tailored based on the silica level in the feed water to optimize removal efficiency and economics.

Source

Integrated reverse osmosis membrane water treatment system that provides a range of drinking water options with varying mineral contents. The system uses multiple stages of filtration including quartz sand, activated carbon, reverse osmosis, and ultrafiltration. Water is progressively filtered through the stages with each stage adding minerals. The final ultrafiltration stage concentrates the water while the others produce filtered water. The concentrated water goes to the next stage. This allows sequential production of water with increasing mineral content. The concentrated water is discharged and the filtered water is mixed in storage tanks to provide a range of options for users.

Source

A hybrid system combining electrodialysis (ED) and reverse osmosis (RO) to desalinate brackish water. It applies a low electric potential across the saline water in the ED cell to separate it into concentrated brine and dilute water. The RO chamber then processes the brine to remove more salt. Using the RO only on the concentrated brine avoids the high energy cost of treating the full feedwater volume.

Source

A multi-stage reverse osmosis water purification system with intermediate stages and feed pumps to improve purity and yield compared to traditional single-stage systems. The system has multiple stages of reverse osmosis filtration connected by intermediate tanks and feed pumps between stages. The intermediate tanks allow recycling of partially purified water back to the previous stage for further filtration instead of waste. This improves overall water purity compared to single-stage systems. The feed pumps boost the pressure of the recycled water between stages to match the incoming pressure.

Source

Integrated pure water treatment system that provides highly purified water using multiple stages of filtration, reverse osmosis, and ion exchange. The system has a storage tank, raw water filter, reverse osmosis unit, and ion exchange unit. The raw water filter includes multi-media, carbon, softening, and precision filters to thoroughly clean the raw water. The reverse osmosis unit further sterilizes and purifies the water. The ion exchange unit removes remaining ions. This multi-stage treatment improves overall water quality compared to just reverse osmosis or ion exchange alone.

Source

A novel water treatment reverse osmosis system that improves efficiency and longevity of reverse osmosis membranes. The system has components like pumps, filters, and a control system. The key innovation is using a precision filter to capture impurities before the reverse osmosis membrane. This prevents buildup on the membrane walls that can reduce performance. The precision filter is further divided into a primary and secondary stage. The system also has a centrifugal pump for higher pressure feeding into the reverse osmosis device, which reduces deformation of the membrane under high pressure. This extends membrane life compared to traditional setups.

Source

Desalination and purification system for surface water and shallow groundwater as irrigation water for facility agriculture. The system uses a multi-stage filtration process with multi-media filters, melt blown filters, nanofiltration, and reverse osmosis. The stages remove impurities, colloids, and salts while retaining nutrients. Nanofiltration pre-treats reverse osmosis to prevent scaling and improve water recovery. The mixed nanofiltrate and reverse osmosis permeate provides irrigation water with high quality and nutrients.

Source

Drinking water purifier with both nanofiltration and reverse osmosis filtration stages for efficient purification of water with improved quality and reduced maintenance. The purifier has a raw water pump, nanofiltration filter, reverse osmosis filter element, and control system. The raw water pump pumps water into the nanofiltration filter, which removes larger impurities. The filtered water then goes into the reverse osmosis filter element to remove smaller impurities. The purified water goes into a storage tank, and the concentrated waste water exits. An ultraviolet sterilizer is used after the reverse osmosis filter. The control system monitors and controls the pumps, filters, and UV sterilizer.

Source

Two-stage reverse osmosis water purification system designed for rural households with high salt and polluted groundwater. The system uses multiple filtration stages with ultraviolet sterilization to adapt to varying water qualities. It starts with ball valve, pump, and UV sterilizer for initial treatment. Then super filter, activated carbon, and precision filter stages follow. The final stages are reverse osmosis membranes with UV sterilization. This allows effective purification of heavily contaminated rural water sources.

Source

Water treatment system and process that improves water quality, reduces energy consumption, and increases water recovery compared to reverse osmosis systems. The system uses a two-stage filtration process with an ultrafiltration membrane followed by a nanofiltration membrane. The unique nanofiltration membrane sealing ring allows reverse cleaning. This enables higher retention of beneficial minerals like calcium and magnesium in the product water. The system also has higher water recovery compared to reverse osmosis due to the two-stage filtration.

Source

A drinking water purifier with both nanofiltration and reverse osmosis filtration stages, along with ultraviolet sterilization, for improved water purification. The system uses a pump, nanofiltration filter, reverse osmosis filter, and UV sterilizer. The raw water is pumped through the nanofiltration filter, then the filtered water is sent to the reverse osmosis filter. After reverse osmosis, the purified water goes to a storage tank, and the concentrated wastewater exits. UV sterilization is done between the reverse osmosis and storage tanks. The system is controlled by a central system monitoring various components.

Source

Direct drinking water purification module and equipment that improves efficiency, conservation, and health benefits compared to reverse osmosis systems. The module has a sequence of components: a reaction module, low-pressure pump, filtration module, and water production module. This allows staged purification, backwashing, and regeneration. A control module coordinates the pumps and valves. The reaction module oxidizes and destroys pathogens, viruses, and heavy metals. The filtration module removes particles. The production module concentrates and stores the purified water. This avoids wasteful reverse osmosis and retains beneficial trace elements.

Source

A cost-effective drinking water preparation system for buildings that uses a combination of filtration, desalination, and disinfection techniques to provide high-quality, direct-pipe drinking water. The system includes stages like multi-media filtration, activated carbon filtration, membrane capacitive deionization, reverse osmosis, dosing, and circulating disinfection to treat the raw water and produce purified water that is sent to the building's pipes for direct drinking. This optimized configuration aims to reduce costs compared to traditional two-stage reverse osmosis systems by leveraging technologies like capacitive deionization and cyclic disinfection.

Source

Pure water production equipment with improved filtration and treatment stages to reduce contaminants and salt levels while extending component life. The equipment has a multi-stage filtration system with sand, carbon, and security filters before reverse osmosis. This pre-treatment removes particles and impurities to reduce load on the RO membrane and mixed bed resin tower. The RO system desalinates and further filters, followed by a mixed bed resin tower for final polishing. A 1µm filter and UV sterilizer complete the purification.

Source

High-efficiency filtration drinking water equipment that combines nanofiltration, ultrafiltration, and reverse osmosis in one device. The equipment has a body with a water tank at the top and a combined filter at the bottom. The filter contains separate nanofiltration, ultrafiltration, and reverse osmosis devices connected in series. The devices use common piping connections to join. This allows simultaneous nanofiltration, ultrafiltration, and reverse osmosis filtration of the water.

Source

Pipeline direct drinking water purification device for residential communities that uses a quality-specific water supply method to provide high-quality drinking water without waste. The device has multiple filtration stages before reverse osmosis, a check valve after reverse osmosis, and a return pipe with a wastewater proportioner. This allows reusing some of the reverse osmosis reject water instead of wasting it. The device also has separate tanks for intermediate and final purified water, avoiding mixing. This reduces waste and resource consumption compared to traditional reverse osmosis systems.

Source

Integrated direct drinking water purification device with sequential modules for pretreatment, reverse osmosis, water purification, and terminal treatment. The device has a raw water pump, sand filter, reverse osmosis membrane, water purification tank, ultraviolet sterilizer, medicine tank, cleaning tank, and pumps between the modules. It allows compact, integrated, and movable direct drinking water purification for locations like schools, hotels, medical, industrial, and military without complex infrastructure.

Source

High-efficiency filtration drinking water equipment that provides nanofiltration, ultrafiltration, and reverse osmosis filtration in a single device. The equipment has a combined filter at the bottom with separate nanofiltration, ultrafiltration, and reverse osmosis stages. The stages share a common connection pipe. This allows using all three filtration technologies together in the same device. The combined filter attaches to the equipment body and water tank. The stages use similar external connections to simplify assembly. The stages have separate elements for filtration.

Source

Modular, transportable water treatment system for providing clean drinking water in remote areas or during emergencies where fixed infrastructure is not available. The system has a sequential arrangement of modules including intake, bag filter, ultrafiltration, booster pump, precision filter, and reverse osmosis. This allows flexible assembly and disassembly of the system components, easy transportation, and adaptation to various water sources. The modular design enables customization of treatment capacity and configuration based on specific requirements. The system provides portable, adaptable, and scalable water purification solution for off-grid areas.

Source

A reverse osmosis water purification system that provides healthy drinking water without depleting essential minerals. The system uses reverse osmosis filtration to remove impurities, but also adds a unique design that allows beneficial minerals like potassium and sodium to pass through. This is achieved by optimizing the osmotic pressure and membrane selection to maintain the correct balance of minerals in the purified water. The system also includes real-time monitoring of water quality to ensure freshness and safety.

Source

Central direct drinking water treatment system using combined membrane filtration to provide safe and healthy drinking water. The system has pre-treatment, combined membrane filtration, and water supply components connected in sequence. The pre-treatment removes large particles. The combined membrane filtration uses ultrafiltration, nanofiltration, and reverse osmosis in series to remove impurities. It also has sterilization with ozone and UV. The water supply pumps and stores treated water. This provides double guarantees of safety and health compared to single membrane systems.

Source

Industrial water purification system with features to improve water quality and equipment stability. The system has a filtration unit, reverse osmosis unit, and disinfection box. The filtration unit is connected to a raw water tank. This prevents sediment from entering the filtration unit and clogging it. The reverse osmosis unit has a concentrated water pipe to avoid accumulation of impurities. The disinfection box uses UV light to kill bacteria in the pure water line. A booster pump applies pressure to the raw water.

Source

A portable water supply system for field hospitals that provides high-quality drinking water from raw water sources. The system consists of connected modules for water intake, treatment, storage, and dispensing. It uses two-stage filtration with prefiltration, activated carbon, reverse osmosis, ultraviolet sterilization, and activated carbon again to treat the water. The modular design allows rapid assembly and disassembly for field deployment. The system uses easily transportable components like hoses and capsules to meet the mobility requirements.

Source

Dual-purpose water purifier with separate storage tank and booster pump for improved efficiency and flexibility. The purifier has multiple filtration stages including ultrafiltration, reverse osmosis, and activated carbon. The ultrafiltration stage has a split output to send some water to the booster pump for pressurization. The booster pump then sends the pressurized water to the reverse osmosis stage. This allows high-pressure reverse osmosis filtration without relying solely on tap water pressure. The purified water goes to the storage tank and activated carbon stage. The waste water goes directly to the activated carbon stage. The split ultrafiltration output and booster pump provide better reverse osmosis filtration efficiency and flexibility.

Source

Dual-purpose five-stage water purifier with features like a composite filter, booster pump, RO membrane, post-activated carbon filter, and separate waste water discharge. The RO membrane has a sealed collection pipe inside the filter cartridge with an isolating part at each end. The isolating part has a water outlet hole and a water collection hole. This allows the RO membrane to be installed without disassembling the cartridge.

Source

A pressurized dual-purpose water purifier that can purify both domestic water and drinking water from municipal sources. The purifier has five filter stages: PPF, pre-activated carbon, ultrafiltration, RO membrane, and post-activated carbon. Raw water passes through the first three stages to become domestic water. The RO stage further purifies the water to drinking quality. This two-stage filtration improves water quality and safety. The purifier also has features like pressure switches, solenoid valves, and a storage tank to optimize operation.

Source

Water purifier system that provides high quality drinking water from municipal tap water. The system uses a multi-stage filtration process with pre-filtration, reverse osmosis (RO), post-filtration, and pressure storage. The stages include filters like PPF, activated carbon, and RO membrane. It also has features like check valves, pressure switches, and solenoid valves to control flow, backpressure, and wastewater. The system can purify water with high organic pollutants, heavy metals, chlorine, endocrine disruptors, color, turbidity, and hardness levels found in tap water.

Source

A centralized drinking water treatment system with integrated membrane filtration to provide safe and healthy drinking water. The system uses a sequence of pre-treatment, membrane filtration, storage, sterilization, and return steps. The membrane filtration combines ultrafiltration, nanofiltration, and reverse osmosis to remove impurities and retain beneficial minerals. Ultraviolet and ozone sterilization in the storage tank provides additional safety.

Source

Water purification system with dual outlets of ultrafiltration and reverse osmosis to improve the efficiency and versatility of water filtration systems. The system has multiple filter units connected in series followed by parallel connections to separate outlets. The first filter unit takes raw water. The third filter unit outputs to both reverse osmosis and ultrafiltration units in parallel. The reverse osmosis unit removes impurities but some minerals. The ultrafiltration unit retains minerals but can't remove heavy metals. By separating the outputs, it provides options for customized filtered water based on specific water quality needs.

Source

Modular drinking water purification system that allows customization and expansion of water treatment capabilities. The system has four modular components - pretreatment, reverse osmosis filtration, sterilization, and purified water storage - that can be sequentially installed to treat water sources. This allows incremental upgrading and tailoring of the water purification process based on water quality and needs.

Source

Reverse osmosis water purification system with improved filtration performance and component longevity. The system uses an ultrafiltration membrane module followed by a reverse osmosis module. This two-stage filtration process provides better purification compared to just reverse osmosis. It also reduces the frequency of membrane replacements since the ultrafiltration module removes larger contaminants before reverse osmosis. The system includes a booster pump, high pressure pump, and ultraviolet sterilizer for additional purification steps.

Source

A high salt rejection reverse osmosis water purifier with two stages of filtration and a booster pump to increase the salt rejection rate beyond the typical 95% of single-stage RO systems. The purifier has an initial RO stage followed by a second RO stage. The wastewater from the second stage is returned to the first stage for additional filtration. This allows multiple passes through the RO membrane to further remove impurities and achieve higher salt rejection. A booster pump is added to increase the pressure to the second stage.

Source

Mobile system for providing purified water of different qualities at multiple locations. It has a prefilter to remove turbidity from raw water, followed by a reverse osmosis filter to produce permeate and concentrate. Pressure switches stop/start the pump based on limits. A valve routes permeate to either a tank or output for selected uses. The system can be driven to locations like farms, construction sites, etc. to provide purified water without needing fixed infrastructure.

Source

A water purifier with a multi-stage filtration system that allows customizable water quality. The purifier has stages including a PP filter, activated carbon, ultrafiltration, reverse osmosis, UV sterilization, and mineralization. The ultrafiltration stage can be bypassed to directly consume water. The reverse osmosis stage removes impurities and the mineralization stage adds minerals. The purifier allows users to choose between different water qualities based on their needs.

Source

A reverse osmosis water purifier that addresses issues of acidic water and bacterial contamination. The purifier has a pretreatment unit to remove impurities, a high-pressure pump, and a post-treatment unit. The post-treatment unit has a pH adjustment step using an alkalizing filter and a bacterial filtration step using an ultrafiltration filter. This allows adjusting pH levels and removing bacteria from stored water to prevent acidic water and bacterial growth.

Source

A multifunctional water purifier with multiple stages of filtration, sterilization, and osmosis to provide high-quality purified water. The purifier has a raw water tank, media filter, activated carbon filter, security filter, and ultrafiltration membrane filter. After the filters, there is a multi-stage osmotic sterilization unit with reverse osmosis, ozone, and UV sterilization. This provides comprehensive purification and disinfection of the water.

Source

Water treatment device with multiple filtration stages and monitoring to provide customizable water quality. The device combines microfiltration, ultrafiltration, and reverse osmosis stages to adjust total dissolved solids (TDS) and pH. It uses a merged filter arrangement with an anti-permeate membrane between stages. This allows tailored water quality by removing specific contaminants at each stage. The device also has a QR code for remote monitoring of working conditions and water quality using a smartphone app.

Source

A water treatment system that improves filtration efficiency and reduces contamination compared to traditional two-stage reverse osmosis systems. The system uses an activated carbon filter between the two reverse osmosis stages. The activated carbon filter has a tangential flush feature that directs water towards the filter layers to rinse off contaminants. This prevents buildup and carries away organic matter that could otherwise pass through the RO stages. The carbon filter also has backwashing capabilities. The system also includes cleaning tanks to periodically flush the RO membranes with specialized solutions.

Source

A reverse osmosis water treatment system with improved water quality and reduced contaminants. The system uses a multi-stage filtration process before reverse osmosis to remove impurities. It involves pumping raw water into a tank, then through a media filter, carbon filter, softener, and ultrafilter before reverse osmosis. This reduces contaminants like iron, manganese, and sediment before osmosis. After osmosis, UV disinfection sterilizes the water. The multi-stage filtration improves overall water quality and removes more contaminants compared to direct reverse osmosis.

Source

A drinking water preparation system that provides high-quality, sterilized drinking water through multiple filtration and purification steps. The system includes pre-treatment filters, reverse osmosis filtration, and post-treatment sterilization steps. The water passes through a series of filters to remove impurities, followed by reverse osmosis to further purify. The purified water is then circulated through sterilization steps like ozone disinfection, titanium filtration, and UV disinfection to ensure clean, sterile water. This prevents secondary contamination. The system is designed to recycle and reuse the water between stages to maximize efficiency.

Source

Improved filter module structure for double penetration reverse osmosis water purifiers that provides better water quality and taste. The filter module has sequential stages including a PP cotton filter, activated carbon filter, low pressure reverse osmosis membrane, and high pressure reverse osmosis membrane. The low pressure membrane filters the water and then it passes through the high pressure membrane for further purification. This dual osmosis stage improves taste and purity compared to just a high pressure membrane.

Source

A double reverse osmosis water system that provides both purified and mineralized water from a single source. The system uses multiple filtration stages including RO, ultrafiltration, and secondary/tertiary filtration. It has separate outlets for pure water, mineral water, and waste water. The RO stage removes impurities. Ultrafiltration retains minerals. Secondary and tertiary filtration further treats the water. This allows separate access to purified and mineralized water from the same source.

Source

Modular ultrafiltration and reverse osmosis water purification equipment that combines ultrafiltration and reverse osmosis membrane filtration in a compact, modular design. The equipment has left and right chambers with a drive motor, solenoid valves, and electronic control. The left chamber has an ultrafiltration membrane and the right chamber has reverse osmosis and UV disinfection. A rotary dial in the ultrafiltration chamber feeds water to the right chamber. The design allows separating and controlling the filtration stages while preventing backflow. The modular structure enables customization and maintenance of each stage.

Source

A versatile water purification system that can filter a wide range of raw water qualities with high efficiency and versatility by assembling components in parallel. The system has pretreatment, ultrafiltration, and reverse osmosis stages. The pretreatment includes filters like bags, carbon, and security filters. The ultrafiltration connects to the reducing agent metering chestnut, followed by the scale inhibitor chestnut, then the reverse osmosis unit. This allows customization based on raw water quality for improved filtration and recovery.

Source