活性炭回流强化去除有机物的试验研究  

Enhanced Removal of Organic Compounds by PAC Return

作　　者：袁煦[1] 许龙[2] 王昭[3] 缪丽娟[3] 

机构地区：[1]苏州科技学院环境科学与工程学院,江苏苏州215011 [2]上海市政工程设计研究总院<集团>有限公司,上海200092 [3]中国市政工程华北设计研究总院,天津300074

出　　处：《中国给水排水》2013年第7期45-47,共3页China Water & Wastewater

摘　　要：以中置式高密度沉淀池为载体,向池内投加粉末活性炭,利用高密度沉淀池的污泥回流系统对粉末活性炭进行富集和回用,延长其在沉淀池中的停留时间,考察投加粉末活性炭后对有机物的强化去除效果,并进行了投炭量优化研究。结果表明:该投加方式能显著改善对有机物的去除效果,相比不投加炭,对CODMn的去除率提高了近10%。通过增加污泥回流比可减少投炭量,在去除率相同的情况下,污泥回流比为5%时的投炭量较回流比为3%时减少了34%,而较不回流投炭方式减少了77%。对有机物的去除效果是粉末活性炭吸附和生物强化共同作用的结果。Powdered activated carbon （PAC） was added into intermediate high-density sedimenta- tion tank, and sludge return system was used to enrich and reuse PAC, extending the residence time of PAC. The enhanced removal of organic compounds by dosing PAC was investigated, and the PAC dosage was optimized. The results showed that dosing PAC could increase the CODMn removal rate by 10%. At the same removal rate, the PAC dosage with 5% sludge return ratio was decreased by 34% compared with that with 3% sludge return ratio, and by 77% compared with that without sludge return. The removal of organic compounds results from the combined effect of PAC adsorption and bioaugmentation.

关 键 词：中置式高密度沉淀池 粉末活性炭 回流 

分 类 号：X703[环境科学与工程—环境工程]