北方盐碱区给水管网微生物可利用磷变化规律

Study on microbial available phosphorus variation in water distribution system in salt alkaloid area

以北方盐碱地区的城市给水管网为实验对象,研究了管网中微生物可利用磷(MAP)的变化规律.实验结果表明温度高的条件下,管网中MAP的质量浓度较高.MAP的变化趋势与总磷的变化趋势相反,与生物可同化有机碳(AOC)在管网中质量浓度变化趋势相反.分析认为该地区磷元素是水样中微生物生长发育的限制因子.

The variation of microbial available phosphorus （MAP） in water distribution system is investigated in salt alkaloid area. The experimental results show that the MAP concentration is higher with the high temperature. The rate of MAP change is contrary with that of total phosphorus. The concentration tendency of MAP and AOC （Assmilable Organic Carbon） by microbial growth is also different. In this area, phosphorus in water samples is the limiting factor for microbial growth.