Schmutzdecke- A Filtration Layer of Slow Sand Filter
نویسندگان
چکیده
منابع مشابه
The Rôle of Vital Layer (or Schmutzdecke) in Slow Sand Bacteriological Purification
The upper layer formed on the surface of theslow sand filter does not appear to play the most important part in bacteriological purification. The sand filters at Pulta, with a capacity of about 99 million gallons daily, offer an excellent opportunity to study such actions, as it sometimes becomes necessary to rake a running filter when it tends to choke, which rapidly diminishes the rate of fil...
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The cement industry is the major source of cement dust which contains heavy metals like nickel, cobalt, lead, chromium, arsenic and hazardous substances like dioxins and furans. Exposure to these substances can cause health problems to human, animals and vegetation. A continuous pilot scale quartz sand filter was constructed and uses to study the effect of important design parameters (temperatu...
متن کاملVisualisation of the microbial colonisation of a slow sand filter using an Environmental Scanning Electron Microscope
The removal of contaminants in slow sand filters occurs mainly in the colmation layer or schmutzdecke a biologically active layer consisting of algae, bacteria, diatoms and zooplankton. A ripening period of 6 8 weeks is required for this layer to form, during which time filter performance is sub-optimal. In the current study, an environmental scanning electron microscope was used to visualise t...
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Engineering enhancement of slow sand filtration has been an enigma in large part because the mechanisms responsible for particle removal have not been well characterized. The presumed role of biological processes in the filter ripening process nearly precluded the possibility of enhancing filter performance since interventions to enhance biological activity would have required decreasing the qu...
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ژورنال
عنوان ژورنال: International Journal of Current Microbiology and Applied Sciences
سال: 2018
ISSN: 2319-7692,2319-7706
DOI: 10.20546/ijcmas.2018.707.077