中文摘要：

建立了硫自养填充床生物反应器用于水中Cl O-4的去除,考察水力停留时间（HRT）、水温的影响及副产物产生规律。结果表明,当进水Cl O-4浓度为22.40～21.07 mg/L时,逐步缩短HRT为12、8、4、2、1.5和1 h,经4～6 d的适应期,反应器对其去除率可达99%以上;低浓度的NO-3-N（2.17 mg/L）的存在对Cl O-4的降解不产生抑制,两者可同步去除;3℃以内的水温波动对其去除影响较小,较大的温度波动（-8℃）会造成去除率下降;Cl-作为惟一还原产物,其浓度增多符合化学计量比。同时,研究证实了硫歧化反应的发生,出水SO2-4浓度的增加量大于理论值,S2-离子浓度较低（〈0.40 mg/L）;该反应主要受HRT和水温的影响,缩短HRT,降低温度均有利于抑制该反应的发生。硫自养过程消耗水中碱度,Cl O-4完全去除时,出水p H值比进水降低约1.1个单位。

英文摘要：

Sulfur-autotrophic reduction of perchlorate from aqueous solution by packed bed reactor was investigated to explore the effect of hydraulic retention time（ HRT）,temperature and the rule of by-products generation. For 22. 40—21. 07 mg / L Cl O-4in influent,through shortening HRT to 12,8,4,2,1,5 and 1 h gradually,the removal efficiency could reach more than 99% after 4—6 days adaptation. Besides,nitrate with low concentration（ 2. 17 mg N / L） could be removed simultaneously without inhibition. Low fluctuation of water temperature（ 3℃） had little effect on removal,while high temperature fluctuation（- 8℃） decreased the removal efficiency. Cl-was the only observed reduction product,and the average yield of Cl-was close to the stoichiometric value. Furthermore,sulfur disproportionation was verified in this study,the yield of SO2-4was greater than the stoichiometric yield of sulfur autotrophic reduction,and the S2-concentration in effluent was lower than 0. 40 mg / L. The disproportionation could be inhibited with shorter HRT or lower temperature. The sulfur-autotrophic reduction process consumes solution alkalinity,p H of effluent is about 1. 1 units lower than influent when removal efficiency of perchlorate 99%.