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为满足造纸行业清洁生产的要求,河南银鸽实业投资股份有限公司第一生产基地漂白工艺由原来的CEPH四段漂白改为ECF漂白工艺,用二氧化氯和过氧化氢代替氯气和次氯酸盐漂白。经过技改后全厂可减少废水排放91.97 t·a-1,BOD5 8.74 t·a-1,COD 81.6 t·a-1,SS 14.07 t·a-1;减少新鲜水用量2740 m3·d-1,每年处理废水可节约电费422.36万元,污水处理费275.91万元,经济效益和环境效益显著,技改工程达到了预期目的。
In order to meet the requirements of cleaner production in the papermaking industry, the bleaching process of the first production base of Henan Silver Pigeon Industrial Investment Co., Ltd. was changed from the original CEPH four-stage bleaching to the ECF bleaching process, with chlorine dioxide and hydrogen peroxide instead of chlorine and hypochlorous acid Salt bleaching. After the technical innovation, the whole plant can reduce wastewater discharge by 91.97 t · a-1, BOD5 8.74 t · a-1, COD 81.6 t · a-1 and SS 14.07 t · a-1, and reduce fresh water consumption by 2740 m3 · d- 1, annual wastewater treatment can save electricity 4.2236 million yuan, sewage treatment fee 2.7591 million yuan, significant economic and environmental benefits, technical transformation projects have reached the expected purpose.