METHOD FOR DEAR ALKALI COPPER CHLORIDE ETCHING SOLUTION PURIFICATION

摘要

the invention u043eu0442u043du043eu0441u0438u0442u0441u00a0 to wastewater treatment of coppercan be used u0434u043bu00a0 cleaning solutions used u0442u0440u0430u0432u0438u043bu044cu043du044bu0445 production of printed circuit boards and u043fu043eu0437u0432u043eu043bu00a0u0435u0442 improve treatment and reduce the consumption of u0438u0437u0432u0435u0441 u0442u043au043eu0432u043eu0433u043e milk u0434u043bu00a0 u043eu0441u0443u0449u0435u0441u0442u0432u043bu0435u043du0438u00a0 method of alkaline copper chloride solution with ph u0442u0440u0430u0432u0438u043bu044cu043du044bu0439 92 mixed with spent acid copper u0445u043bu043eu0440u0438u0434u043du044bu043c u0442u0440u0430u0432u0438u043bu044cu043du044bu043c u0440u0430u0441u0442u0432u043e rom with ph 0 35 to ph 5 5 to 6.5 residue of u043eu0442u0434u0435u043bu00a0u044eu0442 u0444u0438u043bu044cu0442u043eu0441u0432u0430,and the leachate in contact with iron chips and u0432u044bu0434u0435u043fu00a0u044eu0442 copper solution of p - u0439u0442u0440 - u043bu0438u0437u0443u044eu0442 u0438u0437u0432u0435u0441u0442u043au043eu0432u044bu043c milk to ph 8.0 85 way u043fu043eu0437u0432u043eu043bu00a0u0435u0442 increase u0441u0442u0435u043fu0435u044c3 treatment of ra u0442u0432u043eu0440u0430 from 40 to 84% and reduce the consumption of lime milk with 130 to 150 g / l 2, table 2). with |, 00