Heterotrophic Denitrification of Nitrate-Contaminated Water Using Different Solid Carbon Sources
文献类型： 会议论文
第一作者： Mei-Lin Han
作者： Mei-Lin Han 1 ; Ying Xu 2 ; Tian-Lei Qiu 1 ;
作者机构： 1.Beijing Agro-Biotechnology Research Center, Beijing Academy of Agriculture and Forestry Sciences, Banjing, Haidian District, Beijing 100097, P. R. China
2.College of Land Resources and Environment, Shenyang Agricultural University, Shenyang 110866, P. R. China
关键词： Carbon source;groundwater;nitrate;denitrification;biodegradable polymers
会议名称： International Conference on Environmental Science and Information Application Technology
主办单位：
页码： 72-77
摘要： Biodegradability and COD release of polylactic acid (PLA), polycaprolactone (PCL) and polylactic acid/Poly (3-hydroxybutyrate-co-3-hydroxyvaIerate) blend (PLA/PHBV) were determined in water solution with sludge as the inoculum, and the feasibility of using them as carbon sources to remove nitrate from nitrate-contaminated water was also investigated. The experimental results indicate that PLA/PHBV is degraded more rapidly and easily than PLA and PCL. PLA is difficult to be degraded in water solution, so it is unsuitable to be used as carbon source for denitrification. Average denitrification rates supported by PCL and PLA/PHBV were 6.34 and 6.63 mg L~(-1) h~(-1) with 7 h HRT under a batch system, respectively. Nitrite was not detected in the treated water after 9-hour operation.
分类号： x-39
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