Simulation of Biological Wastewater Treatment of Oil Refineries and Oil Producing Enterprises

Shpakovskaya, Irina I.; Loseva, Daria M.

doi:10.1109/eiconrus.2019.8656702

Cited by 1 publication

(1 citation statement)

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“…Since 1980, different activated sludge models (ASMs) were developed to achieve optimum design, operation, and control of the ASP [5] and lately these models became more and more sophisticated due to involving a large number of kinetic and stoichiometric parameters. Many studies were performed to determine the most sensitive parameters and calibrate and validate the different ASMs for various wastewater types [6,7] and recently a database of different parameters' values was developed based on a literature survey of the ASM3 application researches [8,9]. However, the model results for a specific wastewater type are greatly affected not only by the calibrated parameters' values but also by the wastewater characterization since utilization of the available substrates is mutually dependent on other factors, such as dissolved availability of unlimited substrate, existing nutrients, type and availability of electron acceptor, energy source, existence of inhibition factors, … etc.…”

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confidence: 99%

Two-Dimensional Steady-State Analysis of Selected Wastewater State Variables Using ASM3

Mostafa

Radwan

Galal

2021

JERA

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Performance of activated sludge wastewater treatment plants are mainly dependent on bacterial growth, which is limited by many factors. These factors include availability of suitable substrate, limiting nutrients, environmental conditions, and energy. In activated sludge model no. 3 (ASM3), constituents in wastewater are divided into two main categories: carbonaceous compounds and nitrogenous compounds, which are further subdivided depending on their solubility and biodegradability. These compounds are not mutually independent; hence, the fate of one compound in the biological processes is affected by one or more of the other compounds. In this study, a steady-state analysis was conducted to investigate the effect of initial readily biodegradable substrate, oxygen, ammonia nitrogen, nitrite plus nitrate, and heterotrophic organisms’ concentrations on the effluent concentrations of readily biodegradable COD and nitrogen compounds. The studied ranges of the selected wastewater state variables were identified based on literature surveys including previous studies concerning domestic, industrial, and synthetic wastewaters. The results proved that the effluent readily biodegradable substrate and ammonia nitrogen concentrations are reduced as the initial dissolved oxygen and nitrite plus nitrate concentrations are increased. Moreover, better nitrification-denitrification process is achieved at lower initial readily biodegradable concentration leading to lower nitrite plus nitrate concentrations.

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