[Bacteriological control of various methods of sewage sludge hygienization].
As a result of extensive parallel investigations in a water treatment plant it was found that the fresh sludge pasteurization or prepasteurization with ensuing sludge digestion gives a product which is unobjectionable from an epidemiological hygienic point of view. The result were confirmed by investigations in a second plant. Similarly satisfactory results were obtained with the composting of previously desiccated sludge, with the aerobic-thermophilic fermentation of liquid sludge or with the drying of sewage sludge. An alternative to these thermal processes is the application of gamma rays or accelerated electrons.
D004583:Electrons; D004755:Enterobacteriaceae / Q000302:isolation & purification; D005720:Gamma Rays; D006358:Hot Temperature; D011786:Quality Control; D012498:Sanitary Engineering / Q000379:methods*; D012722:Sewage; D012988:Soil Microbiology; D014871:Water Microbiology
D012722:Sewage
Die bakteriologische Kontrolle verschiedener Verfahren zur Klärschlammhygienisierung.