A design equation for human intestinal nematode egg removal in waste stabilization ponds

The percentage removal ( R) of human parasitic nematode eggs in waste stabilization ponds can be described by the empirical equation R = 100 [1 − 0.141 exp(−0.38θ)] where θ is the mean hydraulic retention time (d). The lower 95% confidence limit of this equation. R = 100 [1 − 0.41 exp(−0.49θ+0.0085θ...

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Veröffentlicht in:	Water research (Oxford) 1992, Vol.26 (6), p.863-865
Hauptverfasser:	Ayres, R.M., Alabaster, G.P., Mara, D.D., Lee, D.L.
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences design equation Exact sciences and technology lagooning nematode eggs Pollution removal reuse Sewerage works: sewers, sewage treatment plants, outfalls Water treatment and pollution
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Beschreibung
Zusammenfassung:	The percentage removal ( R) of human parasitic nematode eggs in waste stabilization ponds can be described by the empirical equation R = 100 [1 − 0.141 exp(−0.38θ)] where θ is the mean hydraulic retention time (d). The lower 95% confidence limit of this equation. R = 100 [1 − 0.41 exp(−0.49θ+0.0085θ 2)] is recommended for the design of ponds to meet the WHO microbiological guideline of ≤ one egg per litre for restricted irrigation.
ISSN:	0043-1354 1879-2448
DOI:	10.1016/0043-1354(92)90019-Z