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Title Parasite ova in anaerobically digested sludge
Creator/Author Arther, R.G. ; Fitzgerald, P.R. ; Fox, J.C.
Publication Date1981 Aug 01
OSTI IdentifierOSTI ID: 5102492
Other Number(s)CODEN: JWPFA
Resource TypeJournal Article
Resource RelationJ. - Water Pollut. Control Fed. ; Vol/Issue: 53:8
Subject570000 -- Health & Safety; ;SLUDGES-- HEALTH HAZARDS;WASTE WATER-- HEALTH HAZARDS; ANAEROBIC DIGESTION;CHICAGO;ENVIRONMENTAL EFFECTS;FERTILIZERS;GROUND DISPOSAL;ILLINOIS;NEMATODES;OVA;PARASITES;VIABILITY
Related SubjectASCHELMINTHES;BIOCONVERSION;DIGESTION;FEDERAL REGION V;GAMETES;GERM CELLS;HAZARDS;HELMINTHS;HYDROGEN COMPOUNDS;ILLINOIS;LIQUID WASTES;MANAGEMENT;NORTH AMERICA;OXYGEN COMPOUNDS;PROCESSING;USA;WASTE DISPOSAL;WASTE MANAGEMENT;WASTE PROCESSING;WASTES;WATER
Description/Abstract The Metropolitan Sanitary District of Greater Chicago produces anaerobically digested wastewater sludge from a 14-day continuous-flow process maintained at 35 degrees Celcius.^Some of the sludge is ultimately applied to strip-mined lands in Central Illinois (Fulton County) as a soil conditioner and fertilizer.^Parasitic nematode ova were isolated from freshly processed samples, as well as from samples collected from storage lagoons, using a system of continuous sucrose solution gradients.^The mean number of ova per 100 g of dry sludge was 203 Ascaris spp., 173 Toxocara spp., 48 Toxascaris leonina, and 36 Trichuris spp.^An assessment of the viability of these ova was determined by subjecting the ova to conditions favorable for embryonation.^Recovered ova were placed in 1.5% formalin and aerated at 22 degrees Celcius for 21 to 28 days.^Development of ova isolated from freshly digested sludge occurred in 64% of the Ascaris spp., 53% of the Toxocara, 63% of the Toxascaris leonina, and 20% of the Trichuris spp.^Viability was also demonstrated in ova recovered from sludge samples held in storage lagoons for a period of up to 5 years; embryonation occurred in 24% of the Ascaris spp., 10% of the Toxocara spp., 43% of the Toxascaris leonina, and 6% of the Trichuris spp.^(Refs.^24).
Country of PublicationUnited States
LanguageEnglish
FormatPages: 1334-1338
System Entry Date2001 May 13

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