Influence of the epoxy resin coating on the biofilm on ductile cast iron pipes
WANG Ruo-wei1, XU Shi-rong1, LUO Zhi-feng2, PENG Hong-xi2, LIU Jing-qing2, ZHOU Xiaoyan3, XU Jun4, QIU Shang-de3, HE Xiao-fang3
1. College of Civil Engineering, Hunan University, Changsha 410082, China;
2. College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058, China;
3. Shaoxing Water Environmental Science Institute Co. Ltd, Shaoxing 321000, China;
4. Shaoxing Municipal Water Co., Ltd, Shaoxing 321035, China
The research was carried out in an actual full-scale, non-circulated experimental platform. The effect of Epoxy Resin coating on biofilm on ductile cast iron pipes was studied by analyzing the physicochemical characteristics and microbial community composition of biofilms. The results revealed that the additional epoxy resin coating, compared with cement-mortar lined ductile cast iron pipes, can reduce the attachment of solids and had a positive impact on the microbial abundance and negative impacts on the community composition of biofilms. The total bacteria were 4.01×104copies/cm2 and heterotrophic bacteria were 1.40×10CFU/cm2 in the biofilms. Therefore, Cement-mortar lined ductile cast iron pipes with epoxy resin coating were better in practical applications.
王若玮, 许仕荣, 罗志逢, 彭宏熙, 柳景青, 周晓燕, 徐军, 裘尚德, 何晓芳. 环氧树脂封面层对球墨铸铁管生物膜的影响[J]. 中国环境科学, 2019, 39(5): 2014-2020.
WANG Ruo-wei, XU Shi-rong, LUO Zhi-feng, PENG Hong-xi, LIU Jing-qing, ZHOU Xiaoyan, XU Jun, QIU Shang-de, HE Xiao-fang. Influence of the epoxy resin coating on the biofilm on ductile cast iron pipes. CHINA ENVIRONMENTAL SCIENCECE, 2019, 39(5): 2014-2020.
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