固定化小球藻处理含铬(VI)废水的实验研究  

Experimental study on treatment of chromium(VI)--containing wastewater by immobilized chlorella

作　　者：耿振香 赵慧英 孟利兵 苏赛赛 赵文洁 Geng Zhenxiang;Zhao Huiying;Meng Libing;Su Saisai;Zhao Wenjie(Department of Environmental and Safety Engineering,Taiyuan Institute of Technology,Taiyuan 030008,China)

机构地区：[1]太原工业学院环境与安全工程系,山西太原030008

出　　处：《煤炭与化工》2019年第12期148-150,共3页Coal and Chemical Industry

摘　　要：通过对固定化小球藻处理含铬(VI)废水的研究,得到最佳固定化条件和最佳废水处理条件,并对其吸附过程进行了动力学拟合。实验表明:采用4%的海藻酸钠与3%的藻液混合后滴入2%的氯化钙溶液中,固定3 h制得的小球藻珠对六价铬的处理效果最好。在废水浓度为10 mg/L、小球藻珠投加量(质量浓度)为6.5%、处理时间为240 min时,以及pH值为5的废水条件下,固定化小球藻对含铬(VI)废水具有较高的去除率。通过准一级、准二级动力学方程模型拟合该吸附特性,发现吸附符合准一级动力学方程式。The treatment of chromium(VI) -containing wastewater by immobilized chlorella was studied, and the optimum immobilization conditions and wastewater treatment conditions were obtained, and the kinetic fitting of the adsorption process was carried out. The results showed that when 4% sodium alginate and 3% algae solution were mixed and dripped into 2% calcium chloride solution, the chlorella beads fixed for 3 hours had the best effect on the treatment of hexavalent chromium, when the concentration of wastewater was 10 mg/L, the dosage of chlorella beads was 6.5%, the treatment time was 240 minutes and p H value was 5, the removal effect of chromium-containing treated by wastewater immobilized chlorella was better. The adsorption characteristics were fitted by quasi-first-order and quasi-second-order kinetic equation models, and it was found that the adsorption characteristics were in accordance with the quasi-first-order kinetic equation.

关 键 词：水体污染 固定化小球藻 含铬废水 

分 类 号：TQX703.1[化学工程]