摘要：

以DH-3 型复配水处理试剂处理含Cu²⁺废水，研究了其对溶液中微量Cu²⁺的吸附作用，考察了Cu²⁺浓度 梯度、pH、吸附时间等条件对其吸附性能的影响，得出DH-3 型水处理试剂处理含Cu²⁺废水的适用范围，在pH 2.5~ 6.5，试剂质量分数1.0%，搅拌30 min 的条件下，可将含Cu²⁺质量浓度200 mg/L 的废水处理至<1.0 mg/L，达到国家二 级排放标准。同时对相关试验数据进行处理，得到试剂对Cu²⁺吸附作用的吸附平衡常数、吸附速率常数等吸附动力 学参数。另外通过利用DH-3 型试剂对三种金属表面处理废水的处理实验， 验证了该试剂对含Cu²⁺废水中Cu²⁺及 COD^Cr 的处理性能，提出了存在的问题及进一步改进的研究方向。

关键词: 吸附作用, 含铜废水处理, 碳酸钙

Abstract:

The combined water treatment reagent， DH-3， is used for treating copper-containing wastewater， to study the adsorption of trace Cu2+ in solution. The effects of the conditions， such as the concentration gradient， pH value and adsorption time， are investigated respectively. The applicable scope of DH-3 reagent for treating copper-containing wastewater is obtained. It is found that when the pH value is within 2.5-6.5， the reagent dosage 1.0%， and stirring time 30 min.， the wastewater containing 200 mg/L copper can be treated to wastewater containing below 1.0 mg/L copper， reaching the second class discharge standard. After the processing of relevant data of the experiments， the effect of the reagent on the adsorption dynamic parameters， such as the adsorption equilibrium constant， and adsorption speed constant of Cu2+， etc. are also obtained. In addition， by using DH-3 reagent for treating metal surface wastewaters with three different kinds of metals， the treatment effects of the reagent on the Cu2+ and CODCr of the copper-containing wastewater are verified. The directions of existing problems and further improvement are presented.

Key words: adsorption, copper-containing wastewater treatment, calcium carbonate

中图分类号: 

• X703.1