As the dependence of pure water production is very important. So to produce pure water must be to choose the raw water quality is better. Such as mountain springs, deep wells. 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. Here I introduce the components of this system.
1.1. 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; = 0.3MP
1.2.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 failure to supply for a transit.
1.3. Quartz sand filter
This equipment is mainly to filter microorganisms in the water, dust so that the raw water to achieve the purpose of clear.
1.4.Activated carbon filter
This equipment is mainly to filter the residual chlorine in the water.
1.5.Dosing system (anion and cation exchange system)
Previously, this system was anion and cation exchange system, but it was very difficult to operate and costly to work and material. Now it is changed to dosing system to add scale inhibitor directly.
2, reverse osmosis system
Reverse osmosis system is the core component of the whole pure water system, only through reverse osmosis 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.
2.1.Precision Filter
This filter mainly filters large particles of molecules in the water.
2.2. 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.
2.3. reverse osmosis membrane
Reverse osmosis membrane is used in membrane filtration technology. Let the water molecules through some other ions can not pass to achieve the purpose of water purification.
3. Pure water pre-treatment system
The first level of pre-treatment system
Uses quartz sand multi-media filter, the main purpose is to remove the water contains sediment, manganese, rust, colloidal substances, mechanical impurities, suspended solids, and other particles in the 20UM above the substances harmful to the human body. The automatic filtration system adopts imported Fleck controller, which can automatically carry out a series of operations such as backwashing and positive flushing. At the same time, the equipment has a self-maintenance system, low operating costs. The filter material mainly includes: PPF, AC coconut carbon and so on.
The second level of pretreatment system
Activated carbon filter is used to remove pigment, odor, and a large number of biochemical organics in the water, and to reduce the residual chlorine value in the water as well as the pesticide contamination and other pollutants that are harmful to human body. The automatic filtration system adopts imported Fleck controller, which can automatically carry out a series of operations such as backwashing and positive flushing.
The third level of pretreatment system
Adopts cation resin to soften the water, mainly to remove the hardness of water. Water hardness is mainly composed of calcium (Ca2+), magnesium (Mg2+) ions, when the raw water containing hardness ions through the resin layer, Ca2+, Mg2+ water is adsorbed by the resin exchange, and at the same time, the amount of equal substances released sodium Na + ions, from the water softener out of the water is to get rid of the hardness of ions in the softened water. This effectively prevents the reverse osmosis membrane from scaling. The system can automatically backwash, positive flush. And intelligent resin regeneration can be carried out to extend the service life of the system.
The fourth level of pretreatment system
Adopted 5 micron pore size precision filter to further purify the water, so that the turbidity and chromaticity of the water to optimize. Ensure that the RO system feed water requirements.