ring system 环状管网branching system 枝状管网feeder 给水管，进料管service reservoir 配水池（调节水池）70 m head 70米水头pipe junctions 管网节点head loss 水头损失flow, runoff, discharge 流量Connection 连接管，排出管collecting sewer 污水支管Interceptor 截流污水管(intercepting sewer)manhole 人孔，检查井surface water 地表水wastewater 污废水suspended materials 悬浮物metabolism 新陈代谢outfall 出水口，排水口chemical clarification 化学澄清coagulation 混凝coagulant 混凝剂sedimentation 沉淀filtration 过滤disinfection 消毒sedimentatin basin 沉淀池soft
