The composition of the single-stage reverse osmosis equipment pure water production system:

　　It generally includes a pretreatment system, reverse osmosis device, post-treatment system, cleaning system and electrical control system, etc.

　　The pretreatment system generally includes raw water pumps, dosing devices, quartz sand filters, activated carbon filters, precision filters, etc. Its main function is to reduce the pollution index and residual chlorine and other impurities of the raw water, meeting the feed water requirements of single-stage reverse osmosis. The equipment configuration of the pretreatment system should be determined based on the specific conditions of the raw water.

　　The single-stage reverse osmosis device mainly consists of multi-stage high-pressure pumps, reverse osmosis membrane elements, membrane housings (pressure vessels), supports, etc. Its main function is to remove impurities from water to ensure that the effluent meets the usage requirements.

　　The post-treatment system is an additional configuration when reverse osmosis fails to meet the effluent requirements. It mainly includes Yin beds, Yang beds, mixed beds,EDIOne or more of these devices. The post-treatment system can further improve the effluent quality of single-stage reverse osmosis to meet the usage requirements.

　　The cleaning system mainly consists of a cleaning water tank, a cleaning water pump and a precision filter. When the reverse osmosis system is contaminated and the effluent indicators fail to meet the requirements, it is necessary to clean the single-stage reverse osmosis system to restore its effectiveness.

　　The electrical control system is used to control the normal operation of the entire reverse osmosis system. Including instrument panels, control panels, various electrical protections, electrical control cabinets, etc.

　　The main process flow description of pure water production by single-stage reverse osmosis equipment:

　　1Raw water tank (Optional

　　It stores raw water and is used to settle large sand particles and other sedimentable substances in the water. At the same time, it buffers the impact of unstable water pressure in the raw water pipe on the water treatment system. (Such as the response of pressure sensors caused by too low or too high water pressure).

　　2Raw water pump

　　Constant system water supply pressure and stable water supply volume.

　　3Multi-media filter

　　The filter with multiple filtration layers is mainly designed to remove particles such as sand, rust, colloidal substances and suspended matter contained in the raw water20umThe above-mentioned substances can be controlled by manual valves or fully automatic controllers for a series of operations such as backwashing and forward washing. Ensure the quality of water produced by the equipment and extend its service life.

　　4Activated carbon filter

　　The system adopts fruit shell activated carbon filters. After adsorption by activated carbon, the oxygen consumption of potassium permanganate can also be increased.COD"By"15mg/L(O2)drop2～7mg/L(O2).In addition, due to the adsorption effect, the concentration of impurities adsorbed on the surface increases, thus also playing a catalytic role, removing pigments, odors, a large amount of biochemical organic matter in water, reducing the residual chlorine value and pollutants in water, and removing trihalides in water.THMAnd other pollutants. Manual valves or fully automatic controllers can be selected to control backwashing, forward washing and a series of other operations. Ensure the quality of water produced by the equipment and extend its service life. Meanwhile, the equipment is equipped with a self-maintenance system and has very low operating costs.

　　5Ion softening system/Dosing system

　　R/OThe device is designed to dissolve solid substances for concentrated discharge and the utilization of fresh water, and to prevent the concentrated water end, especiallyROA concentrated water side of a membrane module appears behind the deviceCaCO3,MgCO3,MgSO4,CaSO4,BaSO4, SrSO4, SiSO4The concentration product is greater than its equilibrium solubility constant and crystallizes out,Damage the inherent characteristics of the membrane element ,Before entering the reverse osmosis membrane module,Ion softening devices should be used or an appropriate amount of scale inhibitor should be added to prevent carbonates, SiO2,The crystallization of sulfate.

　　6Precision filter

　　The precision filter is adopted to remove the residual suspended solids, non-straight particles and colloids and other substances in the influent water, so as toROThe subsequent equipment such as the system operates more and more reliably. The filter element is5umMelt-blown filter elements are designed to prevent any leakage from the upper-level filtration unit5umThe removal of impurities. To prevent the membrane surface from being damaged by entering the reverse osmosis device, thereby reducing the membrane's desalination capacity.

　　7Reverse osmosis system

　　A single-stage reverse osmosis device uses sufficient pressure to make the solvent (usually water) in the solution pass through a reverse osmosis membrane (or semi-permeable membrane) to separate it out. Because this process is opposite to the direction of natural osmosis, it is called single-stage reverse osmosis. Reverse osmosis can adapt to various types of raw water with different salt contents, especially in water treatment projects with high salt content, it can achieve excellent technical and economic benefits. Reverse osmosis has a high desalination rate, high recovery rate, stable operation, small floor space, and simple operation. Single-stage reverse osmosis equipment not only removes salt but also most colloids and large-molecular-weight organic substances.

　　8Ozone generator (optional)

　　Eliminate the pollution caused by secondary pollution to thoroughly ensure the hygiene standards of the finished water.

　　The main uses of single-stage reverse osmosis equipment:

　　1It is used to produce pure water and high-purity water required for processes in the electronics industry, such as picture tube glass shells, picture tubes, liquid crystal displays, circuit boards, computer hard disks, integrated circuits, chips, and monocrystalline silicon semiconductors.

　　2It is used to produce softened water and desalinated pure water for the feed water of thermal power generation boilers, medium and low pressure boilers in factories and mines.

　　3It is used to produce pure water for large-volume medical parenterals, injections, pharmaceuticals, biochemical products, medical sterile water and pure water for artificial kidney dialysis, etc., which are required by the pharmaceutical industry.

　　4It is used for the production of drinking purified water, distilled water, mineral water for the beverage (including alcoholic beverages) industry, brewing water for alcoholic beverages and pure water for blending.

　　5Seawater and brackish water are used to produce domestic water and drinking water.

　　6Prepare deionized water for electroplating processes; Pure water for battery (storage battery) production process; Automobiles, household appliances, building materials products, surface coating, cleaning water; Pure water for coated glass Dehardening and demineralizing water required for textile printing and dyeing processes.

　　7Petrochemical industry, such as cooling water for chemical reactions; Process pure water for the manufacturing of chemical agents, fertilizers and fine chemicals, and cosmetics.

　　8A good water supply network system for hotels, buildings, communities, airports, real estate and property management, as well as water purification for swimming pools.

　　9Wastewater treatment and reuse in circuit boards, electroplating, and the electronics industry.

　　10The treatment of wastewater from domestic life, hospitals, leather tanning, dyeing and printing, papermaking industries, and leachate from garbage.