Test of the Activated Sludge Model's Capabilities as a Prognostic Tool on a Pilot Scale Wastewater Treatment Plant

Abstract

A newly developed simulation programme, based on the Activated Sludge Model No. 1, was used to investigate the model's abilities to predict variations in a Bio-Denipho pilot plant. The model was tested under both normal conditions and in connection with an inhibition incident on the pilot plant with positive results.

Evaluation of Wastewater Treatment Plants in El-Gharbia Governorate, Egypt

“…The evaluation was based on measurements of TSS, BOD 5 , COD, R.Cl 2 , plant TSS removal efficiency (TSS%), plant BOD 5 removal efficiency (BOD 5 %), and influent COD/BOD 5 ratio. These parameters were estimated on monthly basis for the raw untreated wastewater (influent) and treated wastewater (effluent) for the period of 12 months from January to December, 2016.…”

“…This shows that improvements in the current situation are possible, thus serving as an incentive to designers and plant operators. Nonsignificant variation in the influent's mean TSS, BOD 5 , COD and COD/ BOD 5 ratios are observed. While significant variations in the removal efficiencies and the effluent concentrations considering all the analyzed constituents are obtained during the experimental period within all investigated treatment plants.…”

“…Residual chlorine (R.Cl 2 ) was measured on site during sampling time. The composite samples were analysed for various parameters like BOD 5 , COD and TSS. The samples were analysed as outlined in the standard methods for the examination of water and wastewater APHA, Depending on the results, performance of each plant was evaluated.…”

“…TSS, BOD 5 and COD are indirect indicators for total suspended solids, fermentable and non-fermentable organic content. The obtained data show that, the physical (TSS), chemical (COD) and biochemical (BOD 5 ) properties of the influent exhibits insignificant variations among the different investigated WWTPs.…”

“…The general yardstick of evaluating the performance of sewage treatment plant is the degree of reduction of BOD, and suspended solids, which constitute organic pollution. The performance efficiency of treatment plant depends not only on proper design and construction but also on good operation and maintenance [5,6].…”