累托石负载阳离子吸附处理含氰废水实验研究

Study on Adsorption Treatment of Wastewater Containing Cyanide with Rectorite Carried Cationic

采用硫酸和高分子絮凝剂聚二甲基二烯丙基氯化铵对累托石进行改性,通过实验研究改性累托石处理模拟含氰废水。结果表明:废水pH值为4.5,改性累托石用量为2.5g/L,吸附时间75min,反应温度25℃,氰的去除率可达99%。改性累托石对氰的吸附符合Langmuir模型,该方法具有处理效果好,操作简单等优点。

The rectorite is modified by sulfate and the macromolecular flocculant Poly-dimethyl-diallyl-ammonium chloride. The simulation experiment on the treatment for wastewater containing cyanide with modified rectorite absorption is conducted. The results show that the removal rate of cyanide can be 99% with pH is 4.5, the dosage of modified bentonite is 2.5g/L and the contacting time is 75 min, the reaction temperature is 25 ℃. The absorption accords with Langmuir absorption isotherms. This technology has advantages of good treatment efficiency, easy operation, and so on.