The growth of Spirulina sp has been observed in tannery effluent stabi
lization ponds. The development of a Spirulina-based High Rate Oxidati
on Pond was undertaken and both substantial remediation and odour redu
ction were achieved. Accumulating alkalinity associated with algal gro
wth in the pond cascade was successfully used to reduce the ammonia to
xicity effects on Spirulina productivity. Evaluation of the feed value
of harvested biomass was undertaken in Artemia salina, chickens, abal
one and rainbow trout. A Spirulina-based High Rate Algal Oxidation Pen
ding process has been shown to present a potential opportunity factor
in the form of value-added biomass providing a novel dimension to the
treatment of tannery effluents. Copyright (C) 1996 IAWQ. Published by
Elsevier Science Ltd