This paper made a study of the variety regulation of pathogens in the activated sludge through biological fermentation using Aspergillus niger as zymophyte.
The paper introduces their salt-tolerance mech anism and research progress regarding conventional anaerobic or aerobic sludge, halophile and salt-tolerant yeast.
The operation of the slurry pumps for transferr in g sludge in the dilute phosphoric acid defecator in the phosphoric acid producti on is mostly not satisfactory.
The respirometric activities of sludge before and after tame have been determined by the BOD Track, and the activity could be expressed by first slope of respirometric curve.
In the third part of the screen the residual water is pressed out of the sludge, at a minimum filter cake thickness, by the pneumatic counterpressure cone at the press discharge.
The state point analysis can be used in the design and operation analysis of the activated sludge system as the RAS ratio, overflow rate and settling characteristics of flocci are varying.