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Activated sludge tank at Beckton sewage treatment plant, UK.The white bubbles are due to the diffused air aeration system. The activated sludge process is a type of biological wastewater treatment process for treating sewage or industrial wastewaters using aeration and a biological floc composed of bacteria and protozoa.
Candidatus Microthrix, identified in more than one EBPR activated sludge source, is a filamentous bacteria suspected to be responsible for phosphate removal during the bulking phase of EBPR, where other PAOs decrease in abundance. [28]
The tube on the left shows typical floc formations in an otherwise clear culture of a bacterium, Zoogloea resiniphila, isolated from an activated sludge wastewater treatment reactor. In the tube on the right, planktonic growth by a floc-impaired mutant results in a turbid appearance.
The sludge age may be too low to enable nitrification. The typical control band for the concentration of MLSS is 2 to 4 g/L for conventional activated sludge, or up to 15 g/L for membrane bioreactors. One of the easiest control procedures for activated sludge systems is the Constant Mixed Liquor Suspended Solids method.
Activated sludge systems are generally based on microorganisms like bacteria, protozoa, nematodes, rotifers, and fungi, which are capable of degrading biodegradable organic matter. There are many positive outcomes from the use of bioaugmentation, such as the improvement in efficiency and speed of the process of breaking down substances and the ...
Membrane bioreactors can be used to reduce the footprint of an activated sludge sewage treatment system by removing some of the liquid components of the mixed liquor. This leaves a concentrated waste product that is then treated using the activated sludge process.
Proponents of aerobic granular sludge technology claim "it will play an important role as an innovative technology alternative to the present activated sludge process in industrial and municipal wastewater treatment in the near future" [1] and that it "can be readily established and profitably used in activated sludge plants". [2]
(2) To shorten the width of the image (from 417px to 300px) so that it can placed on the right side of a Wikipedia article and still have room for the article text. {3) To rename it from "Aerated Sludge 1" to the more appropriate "Activated Sludge 1", since it is now and will continue to be used in the en:Activated Sludge article. The actual ...