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Maintenance of Rivers and Streams
General Observations on Results obtained from Beds A B
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15 cwts acre per day aeration albuminoid albuminoid ammonia allowed Ammonia amount of suspended analyses April average sample bacteria beds Bed A resting Bed Bed Bed buckets catchpits cent chemical treatment clinker contact beds Cut-water Date Remarks Davyhulme days rest depth detritus Diagram experiment feet fillings per day filtrate from bed filtrates obtained flow of sewage gallons per acre gallons per day given in Table grains per gallon headstock hourly samples hours draining hours rest inches January lime and copperas Manchester sewage March 27th material matter entering Measured bed million gallons mixed in mixed mixture of hourly non-putrefactive October open septic tank Oxygen absorbed passing period precipitation primary beds purifying quantity of chemicals raked rate of flow Remeasured removed Report River Medlock screening chamber secondary beds septic tank effluent Ship Canal water sludge ſº sprocket wheels storm water surface suspended matter tons Total suspended solids week weekly average