焦化废水系统生化处理后深度除氰降氮的研究  

Study on Deep Cyanide Removal and Nitrogen Reduction of Coking Wastewater System after Biochemical Treatment

作　　者：李红 孙辉 蒋贵福 左溪强 苏荣新 张冲 赵海军 张宇 王坤鹏 褚运伟 陈奇 王雪 LI Hong;SUN Hui;JIANG Guifu;ZUO Xiqiang;SU Rongxin;ZHANG Chong;ZHAO Haijun;ZHANG Yu;WANG Kunpeng;CHU Yunwei;CHEN Qi;WANG Xue(Ansteel Kurita Water Treatment Co.,Ltd.,Anshan Liaoning 114041,China;Ansteel Group Multi-industry Development Co.,Ltd.,Anshan Liaoning 114001,China)

机构地区：[1]鞍钢栗田(鞍山)水处理有限公司,辽宁鞍山114041 [2]鞍钢集团众元产业发展有限公司,辽宁鞍山114001

出　　处：《辽宁化工》2024年第8期1181-1185,共5页Liaoning Chemical Industry

摘　　要：在实际的运行过程中,焦化废水处理系统存在生化处理后出水总氰化物、化学需氧量、氨氮难以稳定达标排放的问题,为了解决这一问题,需要进一步的除氰降氮。目前采用最有效的办法为絮凝沉淀法,但传统的聚合硫酸铁联合阳离子聚丙烯酰胺的处理方案达不到现场处理需求。针对上述情况研发出AK873,应用到系统后效果显著,出水总氰化物稳定在0.2 mg·L^(-1)以下、化学需氧量低于20 mg·L^(-1)、氨氮小于10 mg·L^(-1),色度也得以降低。In the process of operation,the coking wastewater treatment system has the problem that the total cyanide,chemical oxygen demand and ammonia nitrogen in the wastewater after biochemical treatment are difficult to discharge up to the standard.In order to solve this problem,further cyanide and nitrogen reduction are needed.At present,the most effective method is flocculation precipitation,but the traditional treatment scheme of polyferric sulfate combined with cationic polyacrylamide cannot meet the requirements of on-site treatment.AK873 was developed in response to the above situation.After application to the system,the effect is remarkable.The total cyanide in effluent is stable below 0.2 mg·L^(-1),the chemical oxygen demand is below 20 mg·L^(-1),the ammonia nitrogen is less than 10 mg·L^(-1),and the chroma is also reduced.

关 键 词：焦化废水 生化处理 总氰化物 化学需氧量 氨氮 

分 类 号：TQ085[化学工程]