It is very important as a support for pure water production. Therefore, to produce pure water, we must choose a place with better raw water quality. Such as mountain springs and deep wells. A very important index involved here is "conductivity". Generally speaking, the lower the conductivity, the purer the water. All water treatment processes adopt reverse osmosis system, and the desalting rate of treated water can generally reach 90%-99%; Let me introduce the composition of this system.
1, raw water pump
Raw water pump is used to provide raw water pressure for raw water pretreatment system. If the raw water has pressure, this equipment can be completely unnecessary. General Requirements for Raw Water Pressure; = 0.3 MPa
2. Raw water tank
The function of raw water tank is simpler, and it is used to store raw water. This is because of the fear that raw water cannot be transported (usually adding a float switch will make the whole system more automatic).
3. Quartz sand filter
Quartz sand filter material is used to remove suspended solids, silt and impurities of larger particles in raw water and reduce the turbidity of water. But also can make organic matter, bacteria, viruses and so on. With the decrease of turbidity, a lot of turbidity in water is removed, which creates good conditions for disinfection after filtration.
4. Activated carbon filter
Using the adsorption capacity of activated carbon, the organic matter, free residual chlorine, colloid, particles, microorganisms, some metal ions and decoloration in raw water can be effectively adsorbed.
5. Softening system (batching system)
Using the exchange performance of ionic resin, calcium and magnesium ions in raw water can be removed to prevent scaling of subsequent equipment, but the operation is labor-consuming and material-consuming. Instead, the dosing system directly adds the scale inhibitor to the tank.
Mainly solve the following problems:
1, to prevent organic pollution;
2, prevent colloid and suspended solid particles from blocking;
3. Prevent oxidation damage to the membrane by oxidizing substances; This can ensure the stable operation and normal service life of the reverse osmosis device.
4. Prevent scaling on the surface of reverse osmosis membrane. Oxides of CaCO3, CaSO4, SrSO4, CaF2, SiO2, iron and aluminum are deposited on the surface of the membrane.
reverse osmosis system
The successful application of reverse osmosis technology in pure water equipment provides a good development space for drinking water in China. The realization of reverse osmosis technology needs the cooperation of multiple system technologies.
1. Treated water
The water to be treated can be sewage, tap water, river water, groundwater and other water sources. We usually use tap water and groundwater as the treated water for reverse osmosis treatment. The water quality is relatively sensitive, the pollution degree is low, and the treatment efficiency is fast.
2. Pretreatment system
The pretreatment system performs simple water quality filtration on the treated water. It means that the treated water is as close as possible to the requirements of reverse osmosis technology for water quality. In the treated water, if it is not pretreated, the reverse osmosis membrane will be easily damaged and blocked due to some magazines or high forced corrosion during reverse osmosis treatment.
3. High pressure water pump
The whole reverse osmosis water treatment process needs a certain pressure. By providing pressure to the whole water treatment system, the high-pressure water pump ensures the speed of who passes through the membrane hole and the water supply requirements. The high-pressure water pump must use a special stainless steel corrosion-resistant water pump, because the acid and alkali substances contained in the water treatment solution will corrode. If the corrosion resistance is weak and corroded, it will cause this kind of pollution of water.
5. Intelligent control system
The new reverse osmosis equipment will be equipped with special PLC intelligent control system. Detect the data changes of instrument panels such as thermometers and pressure gauges through intelligent systems. Computer control, equipped with analog screen. Can control the normal operation of the whole set of reverse osmosis equipment. According to the needs of water treatment, the water quantity is set manually, and an alarm prompt is given according to the running state of the equipment.
6. Sealed water tank for storing water
After the reverse osmosis equipment completes the water treatment, the treated water should be collected through a professional water tank. The water tank should be kept clean and anticorrosive to avoid water pollution.
Supporting system
Other auxiliary systems, such as ozone sterilization system, lamp inspection and filling system. Ultraviolet rays can also be used for sterilization, and there will be no residual ultraviolet rays. Many foreign countries like to use ultraviolet rays.