File:Public health bulletin (1881) (14598020007).jpg

Identifier: publichealthbull97unit (find matches)
Title: Public health bulletin
Year: 1881 (1880s)
Authors: United States. Public Health Service
Subjects: Public health
Publisher: Washington U.S. Govt. Print. Off.
Contributing Library: Gerstein - University of Toronto
Digitizing Sponsor: University of Toronto

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y to the figures that would be obtained if computedfrom the analyses of the machine and beater wastes according to theratio of the volumes of these wastes to each other. On the basis of the figures given in the table for the average totalvolume of waste per ton of strawboard manufactured, and on therated capacity of the strawboard mills in this country in 1918 (Lock-woods Directory of the Paper and Stationery Trades, 1918) therewill be approximately 20,000.000,000 gallons of waste dischargedfrom the various plants during the year. Computed on the basisof the average suspended matter in the mixed wastes from all theplants visited (Table No. 2) there will be approximately 161,000 tonsof dry suspended solids discharged from all the plants. There cer-tainly is a large field for experimental work along the lines of recov-ering a large part of this material, most of which is short fiber andsome of it washed and ready to be made into paper if the propermachinery can be invented to handle it,
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19DESCRIPTION OF TESTING STATION. The original plans for the testing station were based on the earlierstudies made by Sackett and by Phelps, with provisions for changingthe arrangement and type of the devices to conform with the possi-ble development of the studies from chemical precipitation and me-chanical filtration to other well-known methods of purifying sewage.(See Fig. 6.) The station was located in the rear of the American Strawboardplant and adjacent to the flume carrying all the waste from the mill. PUMPING EQUIPMENT. A 2-inch horizontal centrifugal pump direct-connected to a 5;-horsepower marine gas engine was used for raising the waste fromthe flume to the settling tanks. The pump was set so that the wasteflowed through the pipe connecting it with the waste flume to thedischarge outlet and the discharge lift was 15 feet. This arrange-ment increased the discharge lift somewhat but had the advantageof having the pump always primed. The waste was discharged fromthe pump to th

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