一株好氧除磷菌P10的筛选及除磷条件的优化研究

Screening of an Aerobic Phosphorus Removal Bacteria P10 and Condition Optimization of Phosphorus Removal

DOI：10.3969/j.issn.1673-1689.2013.07.016

中文关键词: 生物除磷 除磷菌 除磷量

英文关键词: biological phosphorus removal phosphorus removal bacteria phosphorus uptake

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中文摘要:

从性能稳定的实验室规模A/O反应器沉淀池剩余污泥中分离出一株除磷性能较强的菌株P10,该菌最适生长初始pH和除磷初始pH分别为6.5和6.0;最适培养温度和除磷温度均为30℃;铁离子、锰离子及铜离子对菌体生长起促进作用,铁离子、锰离子对除磷也起促进作用,其中铁离子作用最好,可以提高菌浓8.1%,提高除磷量46.0%;菌体对磷酸氢二钾状态存在的磷去除效果最好,为11.23 mg/(g·h)。

英文摘要:

A bacterial strain P10 with better phosphorus removal performance was isolated from the excess sludge in a sedimentation basin of a laboratory scale A/O reactor with stable performance.The optimum pH of growth and initial phosphorus removal for the bacterium are 6.5 and 6.0,respectively.The optimum temperature for cell growth and phosphorus removal are at 30 ℃.Ferrous,manganese and copper ions can stimulate bacterial growth.Moreover,ferrous and manganese ions also promote the phosphorus removal.The addition of ferrous ions could increase the cell concentration by 8.1% and the phosphorus removal amount by 46.0%.The highest removal rate could be reached(up to 11.23 mg/(g·h)) with the phosphorus in form of dipotassium hydrogen phosphate.

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