这张幻灯片概述了一项关于分配系统中硝化作用发生的研究。硝化作用在配水系统中引起的问题概述如下:配水系统（DS）中的氯胺消毒、氯胺形成过程中的额外氨，以及 氯胺衰变释放的氨；和 氯胺化饮用水不需要硝化作用 由于亚硝酸盐的产生， 消毒剂残留的损失，以及 异养平板计数（HPC）增加。课程包括:沉淀/过滤；常见的实验观察； 逻辑回归；pH模型测试；多因素模型；以及基于 多因素模型。包括数字。

This slide presentation outlines a study on nitrification occurrence in distribution systems. The problems that nitrification causes in distribution systems are outlined as related to: chloramine disinfection in distribution systems (DS), extra ammonia during chloramine formation, and ammonia release from chloramine decay; and, nitrification is not desired in chloraminated drinking water distribution systems because of nitrite production, loss of disinfectant residual, and heterotrophic plate count (HPC) increase. Topics covered include: sedimentation/filtration; common experimental observations; logistic regression; pH models tested; multiple factor model; and, risk of nitrification based on multiple factor model. Includes figures.