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Principles of Disinfection
The Sanitary Survey
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acid activated sludge adequate Amer areas bacterial bactericidal beds carbon carbon dioxide chemical chloramine chlorine cities clean coagulation concentration containers cooling Courtesy developed digestion dioxide discharged disease disinfection disposal drinking water effective effluent elimination endemic typhus equipment facilities feet fever filtration fish floc flow frequently gallons garbage hazards health department heat Imhoff tanks important inches industrial infection installed larvae larvicide material meat method milk mosquito odors operation organisms oxidation oxygen pasteurization percent permit persons pipe plant pollution practice prevent public health pump purification removed River rodent sand sanitary sanitation satisfactory screens sedimentation tanks septic tank sewage sewage treatment sewer slow sand filter sludge digestion solids solution spray sterilization storage stream surface temperature tion toilet treatment trickling filters typhoid fever United usually utensils vegetables ventilation washing wastes water supply