BACKGROUND Under scarcity of freshwater, the reuse and low-cost technological solutions applied to wastewaters seek reduce contamination users freshwater biota. RESULTS A cellulose membrane was doped with silver nanoparticles filter urban wastewater (UW) from a city in Argentina. The total amount coliforms Escherichia coli decreased by 99.6% 99.9%, respectively. leak 275 ng L?1, analyzed square...

Background : Pseudomonus stutzeri bactrerium is one of the most important and effective denitrifier bacteria in wastewater. With regard to the importance of effects of nitrate on water resources and human health and role of metronidazole inhibition, this study was done with the aim of survey of effect of metronidazole different concentrations on biological denitrification of Pesudomonas stutzer...

BACKGROUND In this study, a hybrid treatment system (Fluidized Bed positioned in a biological reactor of an Activated Sludge process) was used to treat saline domestic wastewater. The performance of the mentioned hybrid system was compared with the conventional activated sludge. A pilot study was conducted, and Chemical Oxygen Demand (COD), Electrical Conductivity (EC), Total Dissolved Solids (...

A study was undertaken to assess the characteristics, like physical and chemical analysis, of wastewater Kalaburagi City. The characteristics are analysis total solids, suspended dissolved oxygen, biological oxygen demand, phosphates, nitrates. present shows that domestic is organic in nature, having average values BOD 380 mg/l, COD 510 solids 3200 2000 chloride 220 1200 mg/l.

Oil and natural gas development in the Bakken shale play of North Dakota has grown substantially since 2008. This study provides a comprehensive overview and analysis of water quantity and management impacts from this development by (1) estimating water demand for hydraulic fracturing in the Bakken from 2008 to 2012; (2) compiling volume estimates for maintenance water, or brine dilution water;...

Water and wastewater treatment and conveyance account for approximately 4% of US electric consumption, with 80% used for conveyance. Net zero water (NZW) buildings would alleviate demands for a portion of this energy, for water, and for the treatment of drinking water for pesticides and toxic chemical releases in source water. However, domestic wastewater contains nitrogen loads much greater th...