ringsystem环状管网branchingsystem枝状管网feeder给水管,进料管servicereservoir配水池(调节水池)70mhead70米水头pipejunctions管网节点headloss水头损失flow,runoff,discharge流量Connection连接管,排出管collectingsewer污水支管Interceptor截流污水管(interceptingsewer)manhole人孔,检查井surfacewater地表水wastewater污废水suspendedmaterials悬浮物metabolism新陈代谢outfall出水口,排水口chemicalclarification化学澄清coagulation混凝coagulant混凝剂sedimentation沉淀filtration过滤disinfection消毒sedimentatinbasin沉淀池soften软化aeration通风,曝气plainsettling自由沉淀detentiontime滞留时间flocculation絮凝flocs絮凝体coagulantaid助凝剂(flocculationaid)clarifier澄清池contacttank接触反应池sedimentationbasins沉淀池settlingtank沉淀池(settler)parallel-platesettler斜板沉淀池tubesettler斜管沉淀池feedrate水流速度laminarflow层流filtermedium过滤介质(滤料)back-wash反冲洗hydraulicgrading水力分级filtercycle过滤周期chlorination氯化,用氯处理breakpointchlorination折点加氯breakpointdosage折点剂量free(availa