Flow chart :
Raw water tank—raw water pump—multi-medium filter--active carbon filter –water softner
(Sodium Ion Exchanger)—precision filter—RO mainframe(including chemical cleaning device)
—ozone generator—finished product water tank
First stage pre-treatment(Sand filter)
The use of multi-medium quartz sand filters, main purpose is to remove the water contains sediment,
manganese, rust, colloid material, mechanical impurities, suspended solids and other particles in the above
20UM of substances hazardous to health. The effluent turbidity is less than 0.5NTU, CODMN less than 1.5mg / L,
iron content of less than 0.05mg / L, SDI less than or equal to 5. Water filter is a kind of "physical - chemical" process,
the water through granular materials when isolated filter water impurities and colloidal suspensions.
Activated carbon filters used to remove the pigment in the water, smell,
a large number of chemical and biological organisms, reducing the residual value of water
and pesticide pollution and other harmful pollutants. The structure of activated carbon filters
and quartz sand filters, the difference is placed inside the strong adsorption capacity of activated
carbon for removal by the quartz sand filter without the filter out organic material, adsorption of
residual chlorine in the water, using water more than less than or equal to chlorine 0.1ML/M3,
SDI less than or equal to 4, are strong oxidants chlorine, there are various types of membrane damage.
Particle size in water to remove fine particles, sand filters can remove very small colloidal particles
in the water, so that the turbidity reached 1 degree, but still per milliliter of water for hundreds of thousands
of particle size 1-5 microns colloidal particles, the pressure on this filter to remove water after the particle
size of 100 microns or less in small particles, to further reduce the turbidity,
to meet the next process of the water requirements of the protection of the next long-running processes.
Reverse osmosis membrane was only 0.001 micron pore size, can be harmful to
remove dissolved solids and bacteria, viruses, etc., desalination rate of more than 99.6 percent,
the host section contains the security filter, high-pressure pump and reverse osmosis membrane,
security filters for the fourth grade and above pre-treatment systems, high-pressure pump
is the host of one of the core equipment for the reverse osmosis membrane elements to
provide sufficient pressure to overcome the penetration resistance to pressure and run to meet the needs
of a device to achieve the rated water.