Sewage disposal . romfixed nozzles was worked out by one of the authors (R. W. P.)for the plant constructed at Akron, Ohio (Mun. Jour., 1915).Imhoff effluent is applied to the filters from a series of controlchambers built at varying elevations above the nozzles, so thatby cutting out certain chambers the quantity of sewage dis-charged at a given elevation above the nozzles can be controlled(see Figs. 104 and 105). When the siphon discharges, thedepth of sewage in one row of chambers is feet, in feet, in another feet, in another feet, in feet and in three
Sewage disposal . romfixed nozzles was worked out by one of the authors (R. W. P.)for the plant constructed at Akron, Ohio (Mun. Jour., 1915).Imhoff effluent is applied to the filters from a series of controlchambers built at varying elevations above the nozzles, so thatby cutting out certain chambers the quantity of sewage dis-charged at a given elevation above the nozzles can be controlled(see Figs. 104 and 105). When the siphon discharges, thedepth of sewage in one row of chambers is feet, in feet, in another feet, in another feet, in feet and in three others feet. The best arrangement of dosing cycle should be determined bycareful studies in each particular instance. The number of dos-ing periods will depend on the size of tank and rate of flow andthe relation between rest periods and nozzle display periodswill be affected also by the nature of the nozzles. Butterfly DOSING OF TRICKLING FILTERS UNDER VARYING HEAD 349 ,»„n 86fteinf6Tcea Concrete Pipe //. Fig. 104. Plan of Control Chamber for Dosing Trickling Beds atAkron, Ohio. 350 TREATMENT IN TRICKLING OR PERCOLATING BEDS valves have been used to control the dosing cycle at Baltimore,Reading, and Washington, Pa. In addition to these minor periods of intermittency, designedmerely to promote evenness of distribution, the Columbus in-
Size: 1257px × 1987px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, bookpublisherlondo, bookyear1919
