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水体中三、细菌总数、大肠菌群的含量是评价水质清洁程度和污染程度的动态指标。水体受粪便、有机物污染后,在各种细菌微生物作用下逐步由复杂有机物分解为简单有机物并进一步在氨化菌、硝化菌作用下分解为氨氮→亚硝酸盐氮→硝酸盐氮。因此可认为三氮与细菌间有着较密切关系,但三氮逐步还原转化由各有特异的菌种来完成,其变化的内在条件与速率在何种情况下有何反映,三氮分别与细菌总数、大肠菌群有何关系、性质及情况如何、有无区别、以哪种氮素为主要等问题都未见文献报导。为此特根据第三次全国农村饮用水水质评
Three in water, the total number of bacteria, coliform bacteria content is to assess the degree of water quality and pollution levels of dynamic indicators. Water body by faeces, organic pollution, under the action of various bacteria and microorganisms gradually decomposed into complex organic matter and simple organic compounds and further ammonia bacteria, nitrifying bacteria decomposition of ammonia nitrogen → nitrite → nitrate nitrogen. Therefore, it can be considered that there is a close relationship between the three nitrogen and the bacteria, but the conversion of the three nitrogen by the specific species to complete the gradual transformation of the underlying conditions and the rate under what circumstances reflect the three nitrogen and bacteria The total number of coliforms, what is the nature and situation, whether the difference, which nitrogen is the main problem have not been reported in the literature. For this reason, according to the third national rural drinking water quality evaluation