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Purified wastewater leaving the DAF enters a wastewater storage tank before being pumped into the activated carbon filters for final polishing. Activated carbon layer is a material with a strong adsorption capacity thanks to porous structure. Contaminated ingredients will be captured on the surface of the pores of the material layer.During the operation, the filter must be backwashed periodically to clean captured solids ' on the surface of the media. The back-wash period shall be determined practically during T & C period. Back-wash water is sent back to the equalization tank for treatment
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