Public works . tractefla report for the year 1910 of the water works ofRot erdam, Nevertherlands, which contains somerather interesting figures. One of these is the percapita consumption which increased from 19 litersper capita in 1875 to 224 liters in 1893 declining to163 liters in 1898 to 1907, when there was a sharp?decline to 99 liters due to a campaign against wastein which metering played a part. Perhaps the most remarkable figure given is thatfor the collection in the sedimentation basin. Thewater is treated by sedimentation in two basins fol-lowed by slow sand filtration. Basin No. i w
Public works . tractefla report for the year 1910 of the water works ofRot erdam, Nevertherlands, which contains somerather interesting figures. One of these is the percapita consumption which increased from 19 litersper capita in 1875 to 224 liters in 1893 declining to163 liters in 1898 to 1907, when there was a sharp?decline to 99 liters due to a campaign against wastein which metering played a part. Perhaps the most remarkable figure given is thatfor the collection in the sedimentation basin. Thewater is treated by sedimentation in two basins fol-lowed by slow sand filtration. Basin No. i was notcleaned between 1890 and the end of 1909, or morethan 19 years. At the latter date the water wasdrawn off and the depth of deposit was found notto exceed meter at any point. In the secondbasin there was a vigorous growth of water plants,hut following the cleaning of basins No. i the plantgrowth was much reduced, the absence of the thickclumps of batrachium of former years being MOVING CAR OVER BRIDGE THROUGH WHICH HOSE PASSES PUBLIC WORKS VOL 52, Organization of Metro-politan Districts Report of the sub-coniniittee on sew-erage of the American Society forMunicipal Improvements, comprisingLangdon Pearse, chaiiTnan, George and C. M. Reppert. With the increased attention to sanitation and,in particular, the development of pure water suppliesand clean waterways, considerable activity has re-sulted in the formation of various commissions,boards or districts, looking toward the provision offacilities for two or more municipalities acting to-gether. These efforts have come about through thelegal difficulty of co-operating without some methodof joining responsibilities b} organization, and withthe knowledge that better development can be hadthrough utilities, such as a system or sewers,planned to serve a drainage area or district ratherthan individual towns by political boundaries. This tendency was early recognized in Englandthroug
Size: 1830px × 1366px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, booksubjectmunicip, bookyear1896
