Titre :
|
Organic matter, nutrients, and optical characteristics of sewage lagoon effluents
|
Auteurs :
|
R. Davies-colley ;
C. Hickey ;
J. Quinn
|
Type de document :
|
article/chapitre/communication
|
Année de publication :
|
1995
|
Format :
|
p. 235-250
|
Langues:
|
= Anglais
|
Catégories :
|
TRAITEMENT DE L'EAU RESIDUAIRE
|
Mots-clés:
|
NOUVELLE-ZELANDE
;
ALGUE
;
EAU USEE DOMESTIQUE
;
QUALITE DE L'EAU
;
OXYGENATION
;
EFFLUENTS
;
LAGUNAGE
|
Résumé :
|
The effluent characteristics of 11 domestic sewage waste stabilisation lagoons designed to national specifications were examined, with emphasis on their optical properties, biochemically active constituents, and receiving water impacts. Measurements of 26 variables were analysed and compared with our previous (1989) survey of lagoon effluent quality in New Zealand. Dilution of lagoon effluents by 40-fold would ensure that receiving streams meet existing guidelines for most attributes of concern, but >100-fold dilution may be required to prevent visual clarity impacts, and several hundred-fold dilution to prevent benthic algal proliferations.
|
Source :
|
New Zealand journal of marine and freshwater research, vol. 29
|