基于硝化泥炭对含铬废水的正交实验研究

采用稀硝酸处理天然泥炭,考察硝化泥炭的投加量、溶液中铬的初始浓度、溶液的初始pH和吸附接触时间对硝化泥炭的去除效果的影响。实验结果表明:实验因素影响顺序是:含铬废水的初始浓度>pH>硝化泥炭投加量>吸附时间。最佳的实验组合是:硝化泥炭投加量0.5 g、含铬废水的初始浓度20 mg/L、吸附时间80 min、pH 6。在最佳的实验条件下,溶液中的铬离子的去除率达到91.49%。

Orthogonal Experiment on Absorption of Wastewater Containing Chromium by Nitrifying Peat

Using dilute nitric acid to deal with natural peat,nitrification peat dosage,initial concentration of chromium in solution,the initial pH of the solution and the effect of adsorption contact time on the removal of the nitrification of peat were studied.Experimental results showed that the order of experimental factors was the initial concentration of chromium-containing wastewater pH nitrification peat dosagesorption time.The best combination of experiments were the nitrification peat dosage of 0.5 g,the initial concentration of chromium-containing wastewater was 20 mg/L,adsorption time of 80 min,and pH 6.Under the optimal experimental conditions,the solution of the chromium ion removal rate was 91.49%.