本幻灯片概述了硝化作用的几个案例研究。在这些研究中，水质的影响被分解为温度、pH、氯胺残留和Cl₂:NH₃-N比率。预防措施的效果:调整水质； 配电系统操作规程； 减少水龄； 清除管道和蓄水池中的沉积物； 冲洗程序（单向、死角）； 执行腐蚀控制程序； 储层中充填循环的频率； 自由氯化； 添加低剂量的亚氯酸盐（ClO₂或ClO₂-）； 硝化行动计划和监测。 所涉及纠正措施的效果:操作响应； 断点氯化； 整个分配系统； 目标区域； 减少水龄， 水库循环/周转/混合，以及 水库排水和消毒； 冲洗（单向、斑点、死角）。

This slide presentation outlines several case studies on nitrification. Within these studies, the effect of water quality is broken down into temperature, pH, chloramine residual, and Cl₂:NH₃-N ratio. The effect of preventive measures involved: adjusting water quality; distribution system operational practices; decrease water age; remove sediments from pipes and reservoirs; flushing program (unidirectional, dead-ends); implement corrosion control program; frequency of fill cycles in reservoirs; free chlorination; add low doses of chlorite (ClO₂ or ClO₂-); Nitrification Action Plan and monitoring. The effect of corrective measures involved: operational responses; breakpoint chlorination; entire distribution system; targeted areas; decrease water age, reservoir cycling/turnover/mixing, and reservoir draining and disinfection; flushing (unidirectional, spot, dead-ends).