. Water & sewage works . Harrison Hale, the city chemist ofSpringfield, Mo. At the time these samples were takenthe plant was operating at the averagerate of 3,000,000 gallons a day. The sam-ples were taken as follows: No. 275 fromthe crude sewage; No. 277 from the efflu-ent of the settling tank; No. 277 from theeffluent of the percolating filters; No. 278from the effluent of the percolating filtersafter two hours in the final settling basin. Results of SEWAfiE Treatment in Springfield, Mo. Laboratory number 272 27G 277 Organic Free Ammonia Nitrites None None
. Water & sewage works . Harrison Hale, the city chemist ofSpringfield, Mo. At the time these samples were takenthe plant was operating at the averagerate of 3,000,000 gallons a day. The sam-ples were taken as follows: No. 275 fromthe crude sewage; No. 277 from the efflu-ent of the settling tank; No. 277 from theeffluent of the percolating filters; No. 278from the effluent of the percolating filtersafter two hours in the final settling basin. Results of SEWAfiE Treatment in Springfield, Mo. Laboratory number 272 27G 277 Organic Free Ammonia Nitrites None None Nitrates None None None Oxygen consumed Suspended Matter Total Volatile Fixed Dissolved Oxygen None Slight trace Trace Temperature deg. P G9 G8 67 Total number of bacteria per cc 9,500,000 0,450,000 1,110,000 B. coli Communis in cc. ap-proximate per cent, positive samples 100 95 90 278 None Trace 360,000 NovcDi het, Lighting The Municipal Lighting Plant atSeattle, Wash. By J. D. Ross, SuperintendentLighting. of For the lighting of the city of Seattle,Wash., a large system has been built,comprising a hydro-electric generatingstation on the Cedar River, 39 miles out-side of the city; two GO,000-volt transmis-fion lines, an water-power sta-tion In Seattle using water from the cityreservoir, and an extensive city distri-bution system serving approximately20,000 customers and supplying energyfor street lighting. Altho this plant wasbriefly described in Municip.\l Excixeek-iN<i, .June, 1913, the information con-tained in this paper may be of additionalinterest. Control of the entire station is broughtwithin the reach of one operator bymeans of a special control board, 36Inches by 72 inches in a:ze, designed andbuilt by the lighting department. Thisboard contains a diagram of the entirestation, gun-metal being used to repre-sent waterwheels and generators; nickel,ex
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectsewerage, bookyear191
