Water Treatment Equipment (SWT-7)

Technical summarize
1.1 Water feeding pump
Requested access to the system's raw water has a stable flow and pressure, its purpose is to prevent water fluctuations have an impact on the system operation to ensure the stability of the raw water into the system. Raw water was pressurized into the pretreatment system by water feeding pump.
1.2 Multi-media quartz 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. Filter is an effective water purification and treatment of the main process in the preparation of pure water is an indispensable process.

The main structure: Barrel body, baffles, manhole, gauge, filter head, filter, into the water pipes, drains and flushing water mains, as well as access to water, such as the composition of backwashing valve.
Media placement: The placement of single-layer media, there are 0.5 --- 0.53mm particle size of quartz sand composition, thickness 600-700mm, the normal flow rate of particle size 0.5 --- 0.6mm, 10-15M / H, particle size 0.5 --- 1.2mm, 8-10M / H.
Backwashing strength as the 10-15L /, expansion rate of 50%, washing lasted 10 min. Working pressure: 0.2 --- 0.6 Mpa, temperature: 5 - 60 degrees.

1.3 Activated carbon filter
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, in particular, reverse osmosis membranes are more sensitive to chlorine. In addition, the activation process, the surface of activated carbon to form non-crystalline parts of some oxygen-containing functional groups, these functional groups can have a chemical adsorption of activated carbon catalytic oxidation of bad news, to restore the performance, can effectively remove a number of metal ions in water.

1.4 5μ &1μ Micron filter
The function of Micron filter is to be retention of the particles larger than 5μ &1μ In order to prevent it from entering the reverse osmosis system. Such particles may be accelerated by the high-pressure pump to breakdown reverse osmosis membrane modules, resulting in a large number of leakage of salt, bearing in scratch high-pressure pump impeller, resulting in high-pressure pump damaged. Filter element in the filter is replaceable, when the element of export value is beyond (usually 0.07 ~ 0.1MPa), it should be replaced and changed new filter element.
Micron filters adopted corrosion-resistant 304 stainless steel filter housing. Filter element is made of polypropylene spraying, characterized by:
1) Hole-shaped and cone-shaped structure;
2) filter to enter the depths, forming deep filtration;
3) The quantity of pollutants, long life;
4) easy to replace.

1.5 UV sterilizer
Which is mainly used to break up and kill the bacteria and microorganism in the purified water.