Application of immobilized microorganism pellets and ion ezchange resin combined process for micropolluted water treatment
The oxidation of ammonia nitrogen at a low concentration in synthetic micro-polluted water by immobilized nitrobacteria pellets in inner-circulated biological fluidized bed reactor was investigated with the system operated continuously under the condition of temperature 20～30℃, DO 3～5 mg/L. The concentrations of effluent NH4 +-N and NO2 --N are below 0.3 mg/L at the influent concentration of 10～15 mg/L NH4 +-N with the hydraulic retention time(HRT) controlled at 30 min. More than 90％ ammonia nitrogen is oxidated to nitrate nitrogen. The removal of nitrate nitrogen by ion exchange resin in columns. The resin capacity could reach 20 g-N/L-resin, and the removal rate was about 99％. The result shows that the effluent water meets the standards of drinking water quality. This combined process is feasible for engineering applicationand will be widely used in future.
immobilized nitrobacteria pellets ammonia nitrogen ion ezchange resin nitrate nitrogen
Yamei Dong Yongwei Jin Zhengjia Zhang Xianghong Ge
School of Environmental Science and Engineering Shanghai Jiao Tong University Shanghai,China
国际会议
北京
英文
1-4
2009-06-11（万方平台首次上网日期，不代表论文的发表时间）