Water Supply and Irrigation Papers of the United States Geological Survey . the flow line, with a capacity of 7,600 gallons, andtank b is 8 feet 3 inches deep, with a capacity of 7,000 gallons. Thetanks were originally filled with stone and brick over a false bottomand were practically strainers for the removal of suspended filter is provided with a 12-inch overflow leading to a manholeoutside the building- For these experiments the filtering materialwas entirely removed from both tanks, one of the outlets was closed,and a cross-connection was put in to conduct the sewage from thet
Water Supply and Irrigation Papers of the United States Geological Survey . the flow line, with a capacity of 7,600 gallons, andtank b is 8 feet 3 inches deep, with a capacity of 7,000 gallons. Thetanks were originally filled with stone and brick over a false bottomand were practically strainers for the removal of suspended filter is provided with a 12-inch overflow leading to a manholeoutside the building- For these experiments the filtering materialwas entirely removed from both tanks, one of the outlets was closed,and a cross-connection was put in to conduct the sewage from thetop of the first tank to the bottom of the second. By closing theinlet valve of the latter the entire flow was made to pass throughthe two tanks in series. Suitable baffles were provided, as indicatedin the plan, so that the entire capacity of the tanks could be utilizedto the best advantage. As thus arranged, each tank held aboutforty-five minutes flow, and the efficiency of the process was testeat the end of forty-five minutes and ninety minutes. - S. GEOLOGICAL moivi .. • --- {1=S^^ V—- SECTION ON PLAN OF SEWAGE-DISPOSAL WORKS AT BED BANK, N. J. DISINFECTION OF SEPTIC SEWAGE. 53 Chloride of lime was used throughout the work. For the prepara-tion of the solution two hogsheads c and d of about 240 gallonscapacity each were provided, one elevated over the other. In theupper hogshead the requisite amount of bleaching powder was mixedwith water and allowed to settle over night. The next morning theclear supernatant liquid was drawn into the lower hogshead. Thelatter was connected directly with a constant-level tank e, controlledby a ball cock, on which a glass ball and special fittings were neces-sary to prevent corrosion. The constant-level tank was connectedby a flexible rubber tube with the dosing tank/—a box 6 by 6 inchesin plan and 8 inches deep—provided with a three-sixteenth-inchorifice in one side and suspended on one end of a 6-foot lever g, theother end of which
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Keywords: ., bookauthorunitedstatesgeologica, bookcentury1900, bookdecade1900
