Pre-treatment system
As the dependence of pure water production is very important. So to produce pure water must be to choose the place where the quality of raw water is better. Such as mountain springs, deep wells and so on. Here involves a very important index is "conductivity". Generally speaking, the lower the conductivity. The purer the water. Nowadays, the water treatment process is the use of reverse osmosis system. After treatment, the water can generally reach 90% - 99% desalination rate. The following describes the components of this system.
1. Raw water pump
Raw water pump is for the raw water pretreatment system to provide the role of raw water pressure. If the raw water pressure can be completely without this equipment. General requirements for raw water pressure & gt;= 0.3MPa
2. Raw water tank
The role of the raw water tank is more simple, is the storage of raw water. This is afraid of raw water in case of supply for a transit (usually add a float switch is the whole system is more automated).
3. Quartz sand filter
The use of quartz sand filter media in order to remove large particles of suspended solids in the raw water, sediment, impurities, etc., to reduce the turbidity of the water. And also can make the water organic substances, bacteria, viruses, etc. with the reduction of turbidity is removed in large quantities, and for post-filtration disinfection to create good conditions.
4. Activated carbon filter
Using the adsorption capacity of activated carbon to effectively adsorb organic matter, free residual chlorine, colloids, particles, microorganisms, some metal ions and decolorization of raw water.
5. Softening system (dosing system)
Use of ionic resin exchange performance, remove calcium and magnesium ions in the raw water to prevent the subsequent equipment to produce the impact of scale, but the operation of labor, materials. Now changed to dosing system directly to add scale inhibitors.
Reverse osmosis system is the core component of the whole pure water system, only through reverse osmosis in order to achieve the standard of pure water. Reverse osmosis system mainly uses membrane filtration process. Then water molecules can pass through the reverse osmosis membrane. Some other ions such as calcium, magnesium and sodium are discharged with the wastewater. The following components of this system.
1. Precision filter
The filter mainly filters large particles of molecules in the water.
2. Special high-pressure pump
Generally here we use the high-pressure pump for the southern special pump. For reverse osmosis equipment to provide strong power.
3. Reverse osmosis membrane
Reverse osmosis membrane using membrane filtration technology. Let the water molecules through some other ions can not pass to achieve the purpose of water purification.
Some other auxiliary systems such as, ozone sterilization system, light detection, filling system. Also available ultraviolet light to sterilize, ultraviolet light will not have a residue, now there are a lot of foreign countries like to use ultraviolet light