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Disposal of wastewater treatment sludge is a pressing environmental problem in nowadays, which is aggravated by its accumulation around the world. The imposition of more stringent legislation governing the disposal and utilization of sewage sludge, coupled with the growth in its generation and the loss of traditionally accepted disposal routes, has prompted a drive for alternative uses for sewage...
Low carbon and phosphorus concentrations were controlled to investigate their influences on nitrogen removal in activated sludge reactors. Results demonstrated that when the initial COD/ NH4+-N (C/N) ratio was adjusted to 4/1, NH4+-N removal efficiency achieved the maximum value of 93.0%. With the rising of C/N ratio, total nitrogen (TN) removal efficiencies increased gradually while NH4+-N removal...
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