摘要
通过长期驯化的SBR增强生物除磷系统,研究了不同丙酸/乙酸对磷和PHA转化的影响,以及微生物代谢PHA及其组分的计量学.结果表明,随着丙酸/乙酸的升高,系统的除磷能力增强;污水中合适的丙酸/乙酸(C-mol比)为2∶1.计量学研究表明,聚磷菌消耗1 C-mol乙酸生成0.65 C-mol PHB和0.33 C-mol(PHV+PH2MV),消耗1 C-mol丙酸生成极小量PHB和1.21C-mol(PHV+PH2MV).磷去除率与(PHV+PH2MV)代谢有良好的相关性.
With the long-term cultured enhanced biological phosphorus removal systems in sequencing batch reactors, the effect of different ratios of propionic acid to acetic acid on the transformations of phosphorus and polyhydoxyalkanoates （ PHA）, and the metabolism stoichiometry of PHA by phosphorus accumulating organisms were studied in this paper. Results showed that the phosphorus removal efficiency improved with the increase of propionic acid to acetic acid ratio, and the suitable C-tool ratio of propionic acid to acetic acid was 2： 1. Stoichiometry study indicated that O. 15 C-mol PHB and 0.33 C-mol （PHV ＋ PH2MV） were synthesized per degraded C-mol acetic acid, and very few PHB and 1.21 C-mol （PHV ＋ PH2MV） were synthesized per degraded C-mol propionic acid. It was also observed that the phosphorus removal efficiency exhibited a good linear relationship with （PHV ＋ PH2MV）.
出处
《环境科学》
EI
CAS
CSCD
北大核心
2008年第9期2548-2552,共5页
Environmental Science
基金
国家自然科学基金项目(50408039)
教育部新世纪优秀人才支持计划项目(NCET-06-0373)
教育部博士点基金项目(20060247006)
上海市曙光计划项目(05SG26)
