Methods for making ultra-pure water: Raw Water- Multi-media Filtration - Precise Filtration - RO treatment- Electrodeionization
Characterized by uniform composition and low concentrate, LCD washing wastewater could be treated into ultra-pure water directly by the combination of RO and Electrodeionization treatment, which could benefit economically and environmentally.
1. Multi-media Filtration
In the very first step, the relatively clear liquid could be obtained by using the multi-media filter which commonly made of quartz sand, anthracite and activated carbon block to get rid of the impurities in the raw water like suspended solids, colloidal matter, bacterial, etc..
2. Precise Filtration
Pumping the liquid into the security filter to remove the smaller impurities with diameter more than 1 micron, thus improving the service life of RO system and reduce the overall cost.
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3. RO Treatment
Under the pressure of the pump, the removal of impurities like inorganic salt, colloid substances and bacteria is achieved with RO membrane.
Pumping the filtered liquid into the Electrodeionization device to process Ion Exchange. After that, you could get the ultra-pure water that meets the requirement of LCD Washing.