| http://www.w3.org/ns/prov#value | - lter media that can adsorb the coagulant compound at its surface; pretreating the surface of the filter media to increase its ability to adsorb the coagulant compound at its surface, the step of pretreating including the step of depositing negatively charged groups on the surface of the particulate filter media; treating the filter media with the coagulant compound form such that a quantity of the
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