Fecal indicator organisms below an on-site wastewater system with low pressure distribution

The low pressure distribution (LPD) of wastewater in shallow soil, made necessary by restricted soil horizons, was evaluated in 4 subsystems with loading rates of 4.5, 5.7, 9.0 and 17.5 litres per m2. d. The system distributed the wastewater uniformly over the entire trench bottom to overcome low so...

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Bibliographic Details
Published in:Water, air, and soil pollution air, and soil pollution, 1992-05, Vol.63 (1-2), p.201-210
Main Authors: Ijzerman, M. Marian, Hagedorn, Charles, Reneau, R. B.
Format: Article
Language:English
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Summary:The low pressure distribution (LPD) of wastewater in shallow soil, made necessary by restricted soil horizons, was evaluated in 4 subsystems with loading rates of 4.5, 5.7, 9.0 and 17.5 litres per m2. d. The system distributed the wastewater uniformly over the entire trench bottom to overcome low soil hydraulic conductivity and a seasonal water table. Two antibiotic resistant Escherichia coli strains and 2 host-specific coliphage strains were added to the LPD systems to act as tracers. Different strains were used in summer 1989 and winter 1990. All the systems showed satisfactory hydraulic performance and removed the tracers to the extent of 99.9 and 99 per cent in summer and winter, respectively.
ISSN:0049-6979
1573-2932
DOI:10.1007/BF00475631