Reduction of bromate and natural organic matters (NOM) during the transition from fresh granular activated carbon (GAC) to biological activated carbon (BAC)
Two different granular activated carbon (GAC) filters were utilized to investigate the removal efficiency of bromate and natural organic matters (NOM) during the transition from fresh GAC to the biological activated carbon (BAC). The removal efficiency of bromate, nitrate, UV254, DOC, and trihalomethane formation potential (THMFP) in GAC filter apparently decreased during the transition from fresh GAC to BAC. The high level of anions and NOM, and high pH value may slow down the bromate reduction in GAC filter, in initial period GAC filter still has a significant reduction of bromate, with a calculated average reduction rate of 71.9％. Moreover, the GAC filter demonstrated a sustainable and effective bromate reduction in long-term operation. Therefore, if suitable GAC was used, the filter can achieve a plausible bromate reduction efficiency with a long bedlife. Backwashing treatment has only a limited improvement on bromate reduction during transition from fresh GAC to BAC.
bromate natural organic matters (NOM) activated carbon biofilm Yellow River water Introduction
Zhang Kexin Kang Ya Wang Hongwei Hou Yukun
dept.of control science and engineering Huazhong University of Science and Technology Wuhan,China Zh Zhengzhou Water Supply Corporation Zhengzhou,China dept.of control science and engineering Huazhong University of Science and Technology Wuhan,China
国际会议
北京
英文
1-6
2009-06-11（万方平台首次上网日期，不代表论文的发表时间）