摘要
以某钨冶炼企业产生的含氟废水为研究对象,针对现有工艺除氟后废水中F-质量浓度无法达标问题,对比研究了氯化钙沉淀法、氯化钙-铝盐混凝沉淀法、离子交换树脂除氟法3种工艺的除氟效果。结果表明:单独采用氯化钙沉淀法除氟难以保证废水达标排放;氯化钙-铝盐混凝沉淀法除氟和离子交换树脂除氟均可使废水中F-质量浓度从58.45 mg/L降至10 mg/L以下,实现达标排放;相较而言,离子交换树脂除氟效果最好,除氟率可达99.64%,有望作为深度除氟工艺,与化学沉淀法联用。
Taking the fluorine-containing wastewater generated by a tungsten smelting enterprise as the research object,aiming at the problem that the defiuorination effect of the existing process can not meet the requirements of the national comprehensive sewage discharge standard,three processes of calcium chloride precipitation method,calcium chloride aluminum salt coagulation precipitation method and ion exchange refsin defluorination method were compared and studied.The results show that it is difficult to ensure the standard discharge of wastewater by using calcium chloride precipitation method alone.Both calcium chloride aluminum salt coagulation precipitation method and resin defluorination method can reduce F-mass concentration in wastewater from 58.45 mg/L to below 10 mg/L and the discharge standard can be achieved.In contrast,the resin has the best fluoride removal effect and the defluorination rate of 99.64%.It can be used in combination with chemical precipitation as a combination of deep defluoriation process.
作者
赖敏明
李忠岐
曾鹏
洪侃
李奉真
LAI Minming;LI Zhongqi;ZENG Peng;HONG Kan;LI Fengzhen(Ganzhou Nonferrous Metallurgy Reaearch Institute Co.,Ltd.,Ganzhou 341000,China)
出处
《湿法冶金》
CAS
北大核心
2024年第3期327-332,共6页
Hydrometallurgy of China
基金
2021年江西省重点研发计划项目(20212BBG73028)。
关键词
钨冶炼废水
混凝沉淀
铝盐
树脂
除氟
tungsten metallurgy wastewater
coagulating precipitation
aluminum salts
resin
defluorination
