有机碳对水源水生物膜预处理工艺的影响研究  

Effects of organic carbon on the biofilm process for source water pretreatment

作　　者：沈星宇 刘亚雷 吕梅乐 陈东之 阳广凤 SHEN Xing-yu;LIU Ya-lei;LV Mei-le;CHEN Dong-zhi;YANG Guang-feng(School of naval architecture and maritime,Zhejiang Ocean University,Zhoushan 316000,China;School of Petrochemical Engineering and Environment,Zhejiang Ocean University,Zhoushan 316000,China;Zhejiang Lishui Ecological Environment Monitoring Center,Lishui 323000,China)

机构地区：[1]浙江海洋大学船舶与海运学院,浙江舟山316000 [2]浙江海洋大学石油化工与环境学院,浙江舟山316000 [3]浙江省丽水生态环境监测中心,浙江丽水323000

出　　处：《中国环境科学》2023年第S1期95-102,共8页China Environmental Science

基　　金：国家自然科学基金青年科学基金资助项目(51808498);浙江省自然科学基金青年基金资助项目(LQ17E090002)

摘　　要：为探究水源水生物膜预处理工艺运行性能及菌群对不同有机碳源的响应特征,试验构建了2组实验室规模源水生物膜预处理系统,分别以乙醇(反应器R_(1))和葡萄糖(反应器R_(2))为有机碳源.试验结果表明,反应器R1的NH_(4)^(+)-N去除率(ARE)(88.4%±4.6%)较反应器R2(84.9%±7.1%)更高且更稳定.葡萄糖和乙醇作为有机碳源能够增加COD_(Mn)的去除性能,但是两种碳源对于COD_(Mn)的去除效果几乎无明显差别,COD_(Mn)平均去除率分别为(26.3±15.4%)和(26.4±15.9%).乙醇为有机碳源增加了载体生物膜菌群多样性,而葡萄糖增加了底泥的菌群多样性,葡萄糖提高了载体生物膜中Proteobacteria的相对丰度(72.7%),是乙醇为有机碳源的载体生物膜的1.9倍,而乙醇为有机碳源强化了优势属Arcobacter(32.0%)和Tolumonas(15.4%)在生物膜中的富集,其RA值远远高于其它样品.In order to explore the operation performance of the biofilm process for source water pretreatment and the response characteristics of the bacterial community to different organic carbon sources,two laboratory-scale source water biofilm pretreatment systems were constructed,using ethanol(reactor R1)and glucose(reactor R_(2))as organic carbon sources,respectively.Experimental results showed that the NH_(4)^(+)-N removal efficiency(ARE)of reactor R_(1)(88.4%±4.6%)was higher and more stable than that of reactor R_(2)(84.9%±7.1%).Glucose and ethanol as organic carbon sources increased the COD_(Mn) removal performance,but no significant difference was observed for the COD_(Mn) removal.The average COD_(Mn) removal efficiencies were 26.3%±15.4%and 26.4±15.9%,respectively.Ethanol as an organic carbon source increased the diversity of bacterial communities in the carrier biofilm,while glucose increased the diversity of bacterial communities in the sediment.Glucose increased the relative abundance of Proteobacteria in the carrier biofilm(72.7%),which was 1.9 times of that in the carrier biofilm with ethanol as the organic carbon source.At the same time,ethanol as the organic carbon source enhanced the enrichment of dominant genera Arcobacter(32.0%)and Tolumonas(15.4%)in biofilm,and the RA value is much higher than those of other samples.

关 键 词：污染源水 预处理 生物膜 有机碳源 菌群结构 

分 类 号：X703.5[环境科学与工程—环境工程]