Dynamic Modelling of the Secondary Settler of a Wastewater Treatment Via Activated Sludge to Low-load

Bakiri, Zahir; Chebli, Derradji; Nacef, Saci

doi:10.1016/j.egypro.2012.05.012

Cited by 10 publications

(3 citation statements)

References 14 publications

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“…Possible environmental damage changes are mostly caused by shock loads [4]. Due to the fluctuating nature of sewage and industrial wastes, the reactor ability of accepting shock load is the most significant design aspect for biological treatment systems [5].…”

Section: Modelling Of An Sbr Wwtp To Enhance the Performance Under Hymentioning

confidence: 99%

Modelling of an SBR WWTP to Enhance the Performance under Hydraulic Shock Load Using STOAT Software

Hassan¹,

Ragheb²

2019

JCEA

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Modelling is a tool used to simulate the performance of any type of WWTP (wastewater treatment plant) which empowers the user to optimize the response of works by changing influent loads and operational conditions with minimum effort and low cost. STOAT (sewage treatment operational analysis over time) software is used to simulate the performance of wastewater treatment plants dynamically. In this paper, a model was built by STOAT software for the Hannoville WWTP allowing to analyze and study the enquiries in a shorter period of time associated with laboratory analysis. Additionally, the model can be used to estimate the response of the system to a diversity of problems. The hydraulic shock load was tested for the entire WWTP consequently allowing the application of strategies that guarantee a better performance by presenting the analysis for the entire plant. Through the aid of STOAT software, a model was built for the whole plant with daily sewage volume entering the treatment plant in a year. The study showed whether the plant can accept a higher flow than that it regularly receives or not. This proved to be successful and the plant has the possibility to accept double the hydraulic shock load, meanwhile, the variations of resulting data were acceptable when compared to the Egyptian environmental requirements.

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Section: Modelling Of An Sbr Wwtp To Enhance the Performance Under Hymentioning

confidence: 99%

Modelling of an SBR WWTP to Enhance the Performance under Hydraulic Shock Load Using STOAT Software

Hassan¹,

Ragheb²

2019

JCEA

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“…Design, aeration, and operating conditions can all be altered to optimize system performance. Sludge activation methods include complete mixed activated sludge, extended aerated activated sludge, integrated fixed film activated Sludge (IFAS), sequential batch reactor (SBR), modified Ettinger Lodzak process (MLE), anaerobic process / Anoxic / aerobic (A2O), membrane bioreactor method (MBR) and others [5,14].…”

Section: -Introductionmentioning

confidence: 99%

Techno-economic analysis of a municipal wastewater treatment plant: A comparison among SBR, MLE & A2O Processes

Rabani mehr,

Nikkhah,

Farhadian

2023

Scientia Iranica

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Sequencingbatch reactor (SBR), modified Ludzak Ettinger (MLE), and anaerobic/anoxic/aerobic (A2O), were modeled and simulated using the data of the Konarak-Iran wastewater treatment plant. GPS-X and CapdetWorks software were used for technical and economic evaluation, respectively. The cost of MLE treatment per cubic meter of effluent with a flow rate of 900 cubic meters per day was $ 0.96 per cubic meter, which was 36.4% and 12.5% lower than SBR and A2O, respectively. The removal efficiency of pollutants using the A2O method was above 90%, which has the best efficiency compared to the other two methods.However, since the quality of the effluent is also met by the MLE method, the choice of the same method can be desirable. Therefore, modeling and technical and economic simulation of wastewater treatment to perform comparisons between different methods lead to better engineering decisions based on the cost and quality of effluent.

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“…Actually, activated sludge systems are a type of suspended growth biological wastewater treatment in which the degradation and removal of contaminants within the wastewater is performed by microorganisms [bacterial biomass suspension (the activated sludge)] (Evans 2012). Depending on the design and the specific application, an activated sludge wastewater treatment plant can achieve biological nitrogen removal and biological phosphorus removal, plus the removal of organic carbon substances (Aguilar-López et al 2013;Slater 2006;Evans 2012;Jeppsson 1996;Chachuat et al 2005;Banadda et al 2011;Gernaey et al 2004;Nelson and Sidhu 2009;Bakiri et al 2012). Many researchers have modeled and simulated the activated sludge process (Evans 2012;Jeppsson 1996;Chachuat et al 2005;Banadda et al 2011;Gernaey et al 2004;Nelson and Sidhu 2009;Bakiri et al 2012;Abdel Kader 2009).…”

Section: Introductionmentioning

confidence: 99%

Cost estimation and economical evaluation of three configurations of activated sludge process for a wastewater treatment plant (WWTP) using simulation

Jafarinejad¹

2016

Appl Water Sci

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The activated sludge (AS) process is a type of suspended growth biological wastewater treatment that is used for treating both municipal sewage and a variety of industrial wastewaters. Economical modeling and cost estimation of activated sludge processes are crucial for designing, construction, and forecasting future economical requirements of wastewater treatment plants (WWTPs). In this study, three configurations containing conventional activated sludge (CAS), extended aeration activated sludge (EAAS), and sequencing batch reactor (SBR) processes for a wastewater treatment plant in Tehran city were proposed and the total project construction, operation labor, maintenance, material, chemical, energy and amortization costs of these WWTPs were calculated and compared. Besides, effect of mixed liquor suspended solid (MLSS) amounts on costs of WWTPs was investigated. Results demonstrated that increase of MLSS decreases the total project construction, material and amortization costs of WWTPs containing EAAS and CAS. In addition, increase of this value increases the total operation, maintenance and energy costs, but does not affect chemical cost of WWTPs containing EAAS and CAS.

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Dynamic Modelling of the Secondary Settler of a Wastewater Treatment Via Activated Sludge to Low-load

Cited by 10 publications

References 14 publications

Modelling of an SBR WWTP to Enhance the Performance under Hydraulic Shock Load Using STOAT Software

Modelling of an SBR WWTP to Enhance the Performance under Hydraulic Shock Load Using STOAT Software

Techno-economic analysis of a municipal wastewater treatment plant: A comparison among SBR, MLE & A2O Processes

Cost estimation and economical evaluation of three configurations of activated sludge process for a wastewater treatment plant (WWTP) using simulation

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