Water Supply and Waste-water Disposal

acid activated sludge aeration alkalinity ammonia amount aquifer arithmetic mean average bacteria biological calculated capacity carbon dioxide chemical chlorine coagulation coefficient coliform colloidal Column concentration conduit curve decomposition depth diameter digestion discharge disinfection disposal dissolved distribution drain drainage effluent Equation Example filtration floc flocculation flow ground water ground-water hydraulic hydrogen sulfide inlet ions load loss of head magnitude maximum method mg/l nitrogen normal nozzle observations odors operation oxidation oxygen particles pipe plants pollution precipitation pressure pumps rainfall rapid sand filters ratio reaction receiving waters recirculation reduced removal reservoir runoff sanitary Section sedimentation seepage sewage sewers shown in Figure slope slow sand filters sludge soil solids solution specific gravity sq ft storage storm stream substances surface surface runoff suspended Table temperature tion treatment trickling filters unit values velocity volume waste waters waste-water water supply