Activated Sludge Response to a Parachlorophenol Transient

Effluent quality and operational problems caused by wastewater contaminant inhibition of activated sludge were studied. In laboratory reactors, activated sludge was subjected to parachlorophenol (p-chlorophenol) loading transients, where p-chlorophenol (50 mg/L) was omitted from a complex synthetic...

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Bibliographic Details
Published in:Journal - Water Pollution Control Federation 1989-04, Vol.61 (4), p.476-480
Main Authors: Arbuckle, Wm. Brian, Kennedy, Mark S.
Format: Article
Language:English
Subjects:
Acclimatization
Activated sludge
Applied sciences
Chemical hazards
Chemical oxygen demand
Exact sciences and technology
General purification processes
Organic waste
Phenols
Pollution
Sludge
Wastewater
Wastewater treatment
Wastewaters
Water pollution
Water treatment and pollution
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Summary:Effluent quality and operational problems caused by wastewater contaminant inhibition of activated sludge were studied. In laboratory reactors, activated sludge was subjected to parachlorophenol (p-chlorophenol) loading transients, where p-chlorophenol (50 mg/L) was omitted from a complex synthetic waste feed for periods up to 7 days. The ability of the sludge to degrade p-chlorophenol decreased in the experiments faster than that indicated by calculations in which cell wash-out, based on mean cell residence time, was considered. Data also showed that, after losing its acclimation, a reactor reacclimated within 2 days. When p-chlorophenol was removed from the complex waste feed, effluent soluble COD increased even though feed COD decreased.
ISSN:0043-1303
2327-7467