摘要
钯系催化剂生产中不可避免会产生钯废水,针对低含量钯废水,传统钯回收方法回收耗时长,成本高。针对低含量钯废水,分别采用沉淀法、盐酸直接调pH法、水合肼还原法和树脂吸附法进行回收。结果表明,沉淀法适用于处理钯含量不超过1 mg/L的废水,回收率达到90%;采用盐酸直接调pH法和水合肼还原法处理钯废水,出水钯含量有所降低,但未能达到企业排放要求(不超过0.1 mg/L);树脂吸附法适用于处理钯含量不超过10 mg/L的废水,回收率达到99%。
Palladium wastewater is inevitably generated in the production of palladium based catalysts,for low content palladium wastewater,traditional palladium recovery methods take a long time to recover and have high costs.For low content palladium wastewater,precipitation method,hydrochloric acid direct pH adjustment method,hydrazine hydrate reduction method,and resin adsorption method are used for recovery.The results show that the precipitation method is suitable for treating wastewater with palladium content not exceeding 1 mg/L,and the recovery rate reaches 90%;the use of hydrochloric acid direct pH adjustment method and hydrazine hydrate reduction method to treat palladium wastewater results in a decrease in palladium content in the effluent,but it does not meet the discharge requirements of the enterprise(not exceeding 0.1 mg/L);the resin adsorption method is suitable for treating wastewater with palladium content not exceeding 10 mg/L,with a recovery rate of 99%.
作者
李丰
陈慧慧
赵厚超
LI Feng;CHEN Huihui;ZHAO Houchao(Shangqiu Guolong New Material Co.,Ltd.;Henan Yongmei Carbon Fibre Co.,Ltd.,Shangqiu 476000,China)
出处
《中国资源综合利用》
2024年第5期21-23,共3页
China Resources Comprehensive Utilization
关键词
工业废水
钯
回收
沉淀法
树脂吸附法
industrial wastewater
palladium
recycling
precipitation method
resin adsorption method
