多孔铁-碳-稀土合金填料对高盐废水中氯离子的去除

高盐废水是目前水处理领域的难点,主要研究了不同因素下多孔铁碳合金填料对氯离子的去除效果,及Cl-的去除机理。在进水pH为2,停留时间为60 min,Cl-浓度20 000 mg/L条件下进行实验,通过静态实验和连续实验确定Cl-主要去除途径为微电解过程引起的填料吸附。这种合金填料对实际高氯废水也有较好的处理效果,针对变性淀粉废水,在最优条件下填料对废水中氯离子有较强的吸附去除能力,同时COD去除率能达到57%,废水的可生化性得以大幅度提高。

Removal of chloride ion in high salt wastewater by porous iron-carbon-rare earth alloy filler

High salt wastewater, especially the high chlorine wastewater, is difficult to be treated. Chloride removal efficiency of porous iron carbon alloy filler in different factors and an in-depth research of Cl^- removal mechanism were studied. The experiments were carried out under the conditions of initial pH of 2, reaction time of 60 min, Cl^- concentration of 20 000 mg/L. It had found that the mainly removal pathway of Cl^- was filler adsorption caused by micro electrolysis process through static and continuous experiments. Experiments showed that this alloy filler also had a good treatment effect on actual high chlorine wastewater. The filler had strong adsorption capacity on Cl^- in modified starch wastewater under the optimal conditions. The removal rate of COD could reach 57% and the biodegradability of wastewater was greatly improved at the same time.