Intensive aquaculture is becoming more affordable leading to
higher risks of environmental impacts. Gondwe et al. (2012) and
Vezzulli et al. (2008) indicated that aquaculture is the major
contributor to the increasing levels of organic waste and toxic
compounds. Without proper treatment, aquaculture waste would
potentially cause newly emerging diseases due to antibiotic resistance
and harmful algal bloom (Hegaret, 2008; Rubert, 2008).
Wastewater effluent from aquaculture industry contains nitrogenous
compounds (ammonia, nitrite and nitrate), phosphorus and
dissolved organic carbon which may lead to environmental