In this study, an innovative aerobic/anoxic sludge bed bioreactor with two feeding regimes, continuous-fed (an up-flow sludge bed reactor (USBR)) and batch fed (sequencing batch reactor (SBR)), was evaluated for the treatment of an industrial estate wastewater with low BOD(5)/COD ratio. The process performance in the two regimes was compared. Two numerical independent variables (retention/react...

Abstract The USBR VI stilling basin is one of the oldest basins designed to dissipate energy at outlet pipes. In this study, effect two parameters including Froude number (Fr) inlet flow and ratio width equivalent depth ( W / D ) on characteristics mean turbulent inside were investigated, numerically. Reynolds Averaged Navier–Stokes (RANS) equations solved with Re-Normalization Group (RNG) k-ε ...

To meet the need for raw water at IKN (National Capital City) in North Panajem Paser Regency, Sepaku Semoi Dam was built. This study aims to determine hydraulic behavior of physical model test with a scale 1: 50. The hydraulics carried out on spillway, side channel, transition launch energy absorber, and downstream absorber based results as control over count approach. In model, level profile a...

This research paper investigates about the performance of stilling basin models with different geometry of intermediate sill having height equivalent to the diameter of pipe outlet. The experimental study was carried out for three Froude numbers namely 3.85, 2.85 and 1.85 for non-circular pipe outlet. Performance index (PI) has been used to evaluate the performance of stilling basin models test...

The 117th Congress has approved more funding for physical infrastructure and clean energy than any other session of in America's history. You have probably seen headlines news stories with this fact splashed across major newspapers following the passage Infrastructure Investment Jobs Act (IIJA) Inflation Reduction (IRA), but you might not be as familiar strides made toward mitigating drought We...

A piezometric head method is proposed to estimate the impermeable layer depth used in drain spacing formulae. The method was tested and compared with soil texture changes and the US Bureau of Reclamation (USBR, 1978) criterion of impermeable layer being one with hydraulic conductivity one tenth to one fifth that of the weighted hydraulic conductivity of the upper layers. The proposed method, wh...