INDUSTRIAL WASTEWATER DISCHARGE REUSE DEVICE AND METHOD USING TUBULAR TYPE MICRO-FILTER MEMBRANE AND RO MEMBRANE

摘要

The present invention relates to one kind to reuse metallic wastewater effluent, and more specifically, be related to it is a kind of including water sofening treatment step chemical neutralisation treatment step effectively remove hardness metallic wastewater generation effluent in metal process, wherein water sofening treatment step includes: making the where metallic wastewater overflow in storage tank of sodium carbonate (Na2CO3) and sodium hydroxide (NaOH), reacts identical; It is passed through on RO films with the reaction effluent, and chemically neutralisation treatment step includes: there is sulfuric acid (H2SO4) pretreated water to flow into storage tank and be adjusted to pH 4-4.5; Caustic soda is put into pretreated water storage tank and has the effluent by active carbon filter; With from above-mentioned pretreated water discharge of wastewater storage tank pass through RO films; Enter RO membrane flows with net system water and is put into sodium hydroxide (NaOH) in pond to processed water storage pool; Pass through CIP tanks with having the net system water to flow into processed water storage pool case, for efflux to meet industrial water quality standard, the effluent with hardness is effectively moved, and obtains economic feasibility, can significantly decrease the pretreatment in drug cost. ;The 2015 of copyright KIPO submissions