Complex sentence: PolyDADMAC is used in waste water treatment as a primary organic coagulant which neutralizes positively charged colloidal material and reduces sludge volume compared with inorganic coagulants.
Split into simpler sentences: PolyDADMAC is used in waste water treatment as organic primary coagulant which neutralises positively charged colloidal material. Reduces sludge volume compared with inorganic coagulants.