Selectes turbidity, chroma, iron ion, amount of bacteria, thickness of pipeline before and after cleaning as the control criterion for cleaning effect, which lie the foundation f. 选择排污口出水的浊度、色度、铁含量、细菌总数和冲洗前后管壁厚度等参数,作为冲洗效果的控制标准,为今后升级为正式标准打下了基础。
The chroma value of the control group was: 60.9,12.1,10.7; 对照组为:60.9,12.1,10.7;