Abstract: Biological treatment has long been a mainstay of wastewater treatment in the chemical process industries. The effectiveness of biological treatment is governed by the growth of microorganisms. This chapter covers the basic equations concerned with bacterial growth, substrate utilization rate, and yield coefficient in growth with and without inhibition. Biological processes are classified by the oxygen dependence of the primary microorganisms responsible for the waste treatment. The processes are usually referred to as aerobic, anaerobic, or facultative. There are multitudes of aerobic biological treatment processes and technologies in literature and practice, such as activated sludge, trickling filter, and aerobic stabilization ponds. Rotating biological contactor systems normally make use of bar screens and/or comminutors, grit chambers, primary settling tanks, secondary tanks, and digesters, which are operated in the same manner as those of trickling filter systems. Biological life in ponds uses the organic and mineral matter in the sewage for food to produce more stable products.
Publication Year: 2019
Publication Date: 2019-09-16
Language: en
Type: other
Indexed In: ['crossref']
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