The pretreatment of pure water equipment often consists of quartz sand filtration device, activated carbon filtration device, precision filtration device, the main purpose is to remove sediment, rust, colloidal substances, suspended solids, pigment, odor, biochemical organics, to reduce the residual ammonia value of the water and pesticide contamination and other harmful substances. If the calcium and magnesium ion content in the raw water is high, it is also necessary to increase the water softening device, the main purpose of which is to protect the reverse osmosis membrane of the latter stage from the damage of large particles, thus prolonging the service life of the reverse osmosis membrane. Overcome the instability of the pipeline network water supply, to ensure that the entire system of water supply stability and continuity; but also to the long-term performance of the equipment to provide a reliable guarantee.
Control (optional according to specific conditions)
Formulated with a high level float valve, low level control switch. When the water level is not at a high level, with raw water solenoid valve open conditions, when the water level is at a high level, the raw water solenoid valve is closed; when the water level is under the low level, stop the raw water pump work to protect the raw water pump. Raw water contains very fine particles of dust, humus, starch, cellulose and bacteria. Algae and other microorganisms, these impurities and water to form a sol-gel state of the limb particles, due to the Brang movement and electrostatic repulsion force and presents the stability of sedimentation and polymerization stability, usually can not be removed by gravity natural sedimentation method, thus reducing the turbidity of water.
Quartz sand filter media is the use of natural quartz ore. After crushing, washing, drying, secondary screening and become, no impurities, no school corner, high density, high mechanical strength, high dirt-carrying capacity line long service life, is the ideal material for chemical water treatment. Reverse osmosis feed water in addition to the requirements of SD1 <5 there is another feed water indicators of residual chlorine content <0.1mg / L.
Activated carbon filter has two functions: 1, adsorption of some of the organic matter in the water, the adsorption rate of about 60%.2, adsorption of residual chlorine in the water. For the particle size of about 10-20 ? inorganic colloids, organic colloids and dissolved organic polymer impurities in the multi-media filter is difficult to remove. Sodium ion exchanger to ion exchange resin itself Na + replace Ca2 +, Mg2 + water hardness & lt; 0.035 mg equivalent / liter, so that the hardness of raw water into soft water.
Sodium ion exchanger by the ion exchanger tank, conversion head, the center tube, water inlet, outlet. In addition to the use of users need to purchase a plastic pump and inner diameter φ32 transparent plastic tube, 732 ion exchange resin 75-150Kg for the exchanger supporting the use. Add 732 ion exchange resin before use, the cylinder and the converter head are threaded connection, which can be disassembled for ion exchange resin dosing and maintenance. The piping device is a device for inputting source and brine, outputting soft water and discharging waste water. The pipeline is equipped with a stop valve to control the flow of water, flow direction, to provide users with the output of soft water amount of value.