The effect of adding alum water treatment residues (WTR) on the methanogenic activity in digestion primary domestic wastewater sludge was evaluated through laboratory experiments sedimentation columns, using total suspended solids (TSS) concentrations from 0.37 to 1.23 g/L. addition WTR clarifiers can benefit its effluent quality terms colour, turbidity, chemical oxygen demand (COD), and TSS. H...

Palm oil mill effluent (POME) is a wastewater generated from palm industries that rich with organic and nutrients which can becomes an excellent substrate for biogas production. A comprehensive study was carried out to the effect of different ratio inoculum POME In addition, removal efficiencies biochemical oxygen demand (BOD), chemical (COD), ammoniacal nitrogen (AN), total (TN) suspended soli...

Total phosphorus (TP) loads in many rivers the north-central United States have increased, including Illinois River at Valley City, Illinois, USA, which increased 39% from periods 1989–1996 to 2015–2019 despite efforts reduce point and nonpoint sources. Here, we quantify long-term variations (P) its tributaries identify factors that may be causing variations. We calculated river of dissolved (D...

aerobic digestion was useful for mixed sludge of west ahwaz sewage treatment plant. results showed that after 12 days 38% of tvs reduced. this meets the environmental standards. after 19 days detention time in the bioreactor, cod, vss, tvs, tss, ts, were 40 ,56, 54.5 ,50.4 ,44.7 percent respectively. kd coefficient was,0.173day-1. aim of this bench scale study is determination of aerobic digest...

This paper investigates denitrification of brines originating from membrane treatment of groundwater in an upflow sludge blanket (USB) reactor, a biofilm reactor without carrier. A simulated brine wastewater was prepared from tap water and contained a nitrate concentration of 125 mg/l as N and a total salt concentration of about 1%. In order to select for a suitable energy source for denitrific...

introduction             wastewater treatment using activated sludge process (asp) produces huge amounts of sludge that must be treated by efficient methods. wastewater sludge handling is one of the most important economic-technical challenges of wastewater treatment projects. conventional methods for this purpose are very time consuming, expensive and in lots of cases have limited success. in ...