There can be several impacts:
Patrick James Godsil has written: 'The effect of elevated pressure on the activated sludge process' -- subject(s): Biological treatment, Sewage sludge, Sewage, Purification
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James Dumanowski has written: 'Study of activated sludge separation by dynamic straining' -- subject(s): Activated sludge process, Sewage, Purification
Christine Michelle Higby has written: 'Feasibility study of sludge lysis and recycle extended aeration in the activated sludge system' -- subject(s): Activated sludge process, Engineering, Sewage, Purification
Carl Beer has written: 'A study of nitrate respiration in the activated sludge process' -- subject(s): Activated sludge process, Sewage, Nitrification, Purification
David Jenkins has written: 'Manual on the causes and control of activated sludge bulking, foaming, and other solids separation problems' -- subject(s): Activated sludge process, Flocculation, Purification, Sewage, Sludge bulking
The activated sludge process is commonly used to treat sewage. In this process, microorganisms are added to break down organic matter in the sewage, forming a sludge that settles out, leaving cleaner water behind. The cleaned water is then further treated before being discharged.
Fred Michael Saunders has written: 'The effect of cell residence time on the extracellular organic compounds in activated sludge suspensions'
Paul H. Klopping has written: 'Activated sludge operations' -- subject(s): Waste disposal, Activated sludge process, Sewage, Paper mills, Pulp mills, Purification
Both Lansing, MI and Howell, MI have used activated sludge wastewater treatment. However, the first experimental plant in the US was built in Milwaukee (Wisconsin) in 1915.
Robert Patrick Matthews Davis has written: 'Effect of nutrient variation on the growth of a bacterial species isolated from an activated sludge plant'
Alan W Manning has written: 'Design handbook for automation of activated sludge wastewater treatment plants' -- subject(s): Activated sludge process, Sewage disposal plants, Sewage, Purification