Modeling off a large-scale wastewater treatment plant for efficient operation

Gökçay, Celal Ferdi
Sin, Gürkan
Environmental legislations in the Western world impose stringent effluent quality standards for ultimate protection of the environment. This is also observed in Turkey. The current paper presents efforts made to simulate an existing 0.77 million m(3)/day conventional activated sludge plant located at Ankara, AWTP. The ASM1 model was used for simulation in this study. The model contains numerous stoichiometric and kinetic parameters, some of which need to be determined on case by case bases. The easily degradable COD (SS) was determined by two methods, physical-chemical and respirometric methods, namely. The latter method was deemed unreliable and rejected in the further study. Dynamic simulation with SSSP program predicted effluent COD and MLSS values successfully while overestimating OUR. A complete fit could only be obtained by introducing a dimensionless correction factor (eta(O2)=0.58) to the oxygen term in ASM1.


Modelling of nitrogen removal in Ankara wastewater treatment plant
Kim, Eun-Ah; Gökçay, Celal F.; Department of Environmental Engineering (2002)
Nowadays environmental legislations in many countries have all imposed strict effluent quality standards for carbon, nitrogen and phosphorous for wastewater treatment plants. This in turn caused complicated design, operation and control of biological treatment systems. As a result, computer programs based on complex mathematical models are now developed for the simulation of such complicated systems. The influent wastewater characterization based on COD and Nitrogen fractionation became very important in de...
Identification and Elucidation of the Designing and Operational Issues of Trickling Filter Systems for Wastewater Treatment
Ali, Imran; Khan, Zahid M.; Peng, Changsheng; Naz, Iffat; Sultan, Muhammad; Ali, Mohsin; Mahmood, Muhammad H.; Niaz, Yasir (2017-01-01)
Water pollution has become a major environmental concern for public and environmental health in developing countries. Water resources are being contaminated mainly due to mixing of domestic, municipal, and industrial wastewaters. The wastewater management and treatment situation is deplorable mainly because of financial constraints, the unavailability of technically trained human resources, and electricity shortages. Moreover, there is a challenge for the scientific community and wastewater management exper...
Modeling Environmental Literacy of University Students
Teksöz, Gaye; Şahin, Elvan; Öztekin, Ceren (Springer Science and Business Media LLC, 2012-02-01)
The present study proposed an Environmental Literacy Components Model to explain how environmental attitudes, environmental responsibility, environmental concern, and environmental knowledge as well as outdoor activities related to each other. A total of 1,345 university students responded to an environmental literacy survey (Kaplowitz and Levine in Environ Educ Res 11:143-160, 2005). The structural equation model revealed that high levels of environmental knowledge stimulate a university student's concern,...
Computer modeling of blowback oil consumption in internal engines
Bilge, Egemen; Dursunkaya, Zafer; Department of Mechanical Engineering (2009)
Environmental pollution is an important problem of our world. Governments are aware of this problem and emission regulations are continuously improved. One of the strictest regulations is about unburned and burned hydrocarbon emissions. In internal combustion engines the origin of the burned and unburned hydrocarbons is fuel and engine oil. As a result of the sanctions and the necessity of improved combustion performance of the engine, manufacturers work on manufacturing technology and engine tribology. Wit...
Assessment of the best available wastewater management techniques for a textile mill: cost and benefit analysis
Doğan, Buğçe; Yetiş, Ülkü; Department of Environmental Engineering (2008)
The Integrated Pollution Prevention and Control (IPPC) Directive from the European Union strives to achieve a high level of environmental protection by preventing or reducing the pollution emanating from industrial installations directly at the source. The Directive implies that the emission limit values should be set in accordance with each industry’s Best Available Techniques (BAT). In the present study, water recovery and wastewater treatability alternatives developed beforehand were evaluated towards th...
Citation Formats
C. F. Gökçay and G. Sin, “Modeling off a large-scale wastewater treatment plant for efficient operation,” WATER SCIENCE AND TECHNOLOGY, pp. 123–130, 2004, Accessed: 00, 2020. [Online]. Available: