Observations on changes in ultrasonically treated waste-activated sludge
Resource
Water Research 35 (4): 1038-1046
Journal
Water Research
Journal Volume
35
Journal Issue
4
Pages
1038-1046
Date Issued
2001
Date
2001
Author(s)
Abstract
This work experimentally elucidates the effects of ultrasonic treatment on the physical, chemical, and biological characteristics of a waste-activated sludge. A critical ultrasonic power level exists above which, accompanied with the release of divalent cations from the sludge body, the floc structure effectively disintegrated, microbial level acceptably disinfected, and particulate organic compounds sufficiently transformed into soluble state. Both ultrasonic vibration and bulk temperature rise contribute to the treatment efficiency. Possible mechanisms of ultrasonic treatment are discussed.
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Type
journal article
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