钽铌钨锡多金属矿分离加工废水处理工艺研究
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摘要
研究了采用石灰中和+化学絮凝沉淀、有机复合脱氮剂分质处理钽铌钨锡多金属矿分离加工产生的酸性和碱性废水,氟化物、氨氮去除率可达到99.9%以上,重金属离子去除率可达到99%以上,氨回收率可达到98%以上。该处理工艺可实现废水资源化,回收的稀氨水可返回生产工艺再利用,具有良好的环境效益和经济效益。
Lime neutralization,chemical flocculent precipitation and organic compound denitrifier are applied in treatment of acidic and alkaline wastewater from Ta-Nb-W-Sn polymetallic ore separation.The re- moval rate of fluoride and ammonia nitrogen is above 99.9%,the removal rate of heavy metal ion is above 99%,and ammonia recovery rate is above 99.8%.The recycling of wastewater can be realized through the treatment process,and the recycled dilute aqua ammonia can be reused in the production process.The treat- ment process has good environmental and economic benefits.
Lime neutralization,chemical flocculent precipitation and organic compound denitrifier are applied in treatment of acidic and alkaline wastewater from Ta-Nb-W-Sn polymetallic ore separation.The re- moval rate of fluoride and ammonia nitrogen is above 99.9%,the removal rate of heavy metal ion is above 99%,and ammonia recovery rate is above 99.8%.The recycling of wastewater can be realized through the treatment process,and the recycled dilute aqua ammonia can be reused in the production process.The treat- ment process has good environmental and economic benefits.
引文
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[2]韩建设,赵明智,王才明,等.钽铌湿法冶炼的“三废”综合治理工艺探讨[J].稀有金属与硬质合金,2006,34(4):43.
[3]张浩.钽铌冶炼三废治理措施的探讨[J].江西有色金属,2009,23(1):32.
[4]姚艳,杨道武,刘义,吴辰龙.石灰乳—聚合氯化铝处理高含氟废水的研究[J].工业水处理,2011,31(8):42-44.
[5]赵贤广,李武,王金龙,等.高浓度氨氮废水处理与氨资源化新技术[J].工业水处理,2011,31(12):31.
[6]李绪忠,陈平,王水云.有机复合脱氮剂处理高浓度氨氮废水工艺研究[J].稀有金属与硬质合金,2010,38(3):46-49.
[7]雷春生,马建锋,李定龙,等.复合脱氮剂-吹脱法处理高浓度氨氮废水试验研究[J].科学通报,2009,54(22):3565-3569.
[8]刘国文,王继徽.含氟含氨氮废水的治理[J].硬质合金,2005,22(4):246.