Recirculating aquaculture systems (RAS) are promising candidates for the sustainable development of industry. A current limitation RAS is production and potential accumulation nitrogenous wastes, ammonium (NH4+), nitrite (NO2?) nitrate (NO3?), which could affect fish health welfare. In a previous experiment, we have demonstrated that marine anammox bacteria Candidatus Scalindua was candidate to...

Pakistan, once a water-surplus country, is now a water deficit country. The water availability has decreased from 1,299 m3 per capita in 1996-97 to 1,100 m3 per capita in 2006 and it is projected to less than 700 m3 per capita by 2025. Therefore, search for other non-conventional water resources for irrigation i.e. wastewater, has become important. In Pakistan, domestic and industrial wastewate...

Saline wastewaters can be produced from industrial activities, the use of seawater and brackish water in urban environments, or due to saline water infiltration into the sewer system. This can lead to sulfate-rich wastewater that under anaerobic conditions and the presence of electron donors can result in sulfide production. This study focuses on evaluating the sulfide effects on the biological...

Couplings of forward osmosis (FO) with reverse (RO) or membrane distillation (MD) are investigated at the water-energy nexus. The treatment low and hypersaline feed solutions was assessed, followed by discussion most effective hybrid scheme for different conditions. Two FO configurations presented, suggesting potential applicability a versatile multi-stage approach treating low-saline wastewate...

management of unconventional water management in agricultural lands reduces environmental risks and increases its productivity. the purpose of this study was evaluating and comparing the effect of wastewater, saltwater and brackish water on some soil physical and chemical properties. for this purpose, five study sites including control area, irrigation with saltwater, brackish water wastewater ...

The application of the photo-Fenton process to the treatment of saline wastewater contaminated with hydrocarbons is investigated. Aqueous saline solutions containing raw gasoline were used as a model oil-field-produced water. The dependence on concentrations of the following reagents has been appropriately evaluated: hydrogen peroxide (100-200 mM), iron ions (0.5-1 mM), and sodium chloride (200...