正交法优化嗜酸氧化亚铁硫杆菌次生铁矿物吸附废水中锌

The Optimization by Orthogonal Test Method for Adsorption of Zn in Wastewater with Secondary Iron Minerals Produced by Acidithiobacillus Ferrooxidans

采用正交实验法获得嗜酸氧化亚铁硫杆菌次生铁矿物处理废水中锌的最优条件。基于单因素实验结果,以次生铁矿物添加量、pH和处理时间作为影响因子,进行正交实验,测定废水中锌离子的去除率。结果表明:当次生铁矿物添加量为0.6 g,pH为2.4、处理时间为36 h时,废水中锌的去除率最高。采用正交实验法获得嗜酸氧化亚铁硫杆菌次生铁矿物处理废水中锌的最优条件,具有一定的应用价值,为地方锌污染的治理奠定理论基础。

Orthogonal test method was used to optimize the adsorption of Zn in wastewater with secondary iron minerals produced by Acidithiobacillus ferrooxidans.The removal rate of Zn were determined by orthogonal test,and the secondary iron minerals dosage,pH and adsorption time were influencing factors based on the single factor experiments.The results showed that the removal rate of Zn reached the maximum,when the secondary iron minerals dosage was 0.6 g,pH was 2.4 and adsorption time was 36 h.The optimum conditions of Zn adsorption in wastewater obtained by orthogonal method has the value of practical application,which may lay a theoretical foundation for the treatment of local zinc pollution.