Investigating the effect of changing the decay coefficient in an activated sludge model

The activated sludge process (ASP) is widely used to treat both domestic and industrial wastewaters. main disadvantage of the ASP expense disposing excess sludge, which can account for between fifty sixty percent operating costs a treatment plant. We examine model in biochemical processes are represented by simplified version well known No. 1. A promising method decrease production increase biodegradability. variety experimental methods exist do this, such as enzyme treatment, ozonation, heat ultrasound. investigate effect increasing decay coefficient upon two important variables: chemical oxygen demand total suspended solids. References R. T. Alqahtani, M. I. Nelson, A. L. Worthy. Sludge disintegration. Appl. Math. Model. 40.17–18 (2016), pp. 7830–7843. doi: 10.1016/j.apm.2016.03.040 E. Billing P. Dold. Modelling techniques biological reaction systems; 2. steady state case. Water SA 14.4 (1988), 193–206. http://wrcwebsite.azurewebsites.net/wp-content/uploads/mdocs/WaterSA_1988_04_504.PDF. European Council. Council Directive 91/271/EEC 21 May 1991 concerning urban waste-water treatment. Official J. E.U. L135 (1991), 40–52. https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=celex%3A31991L0271 X. Hao, Q. Wang, Y. Cao, C. van Loosdrecht. Evaluating minimization caused predation viral infection based on extended 2d. Res. 45.16 (2011), 5130–5140. 10.1016/j.watres.2011.07.013 Henze, Grady Jr, W. Gujer, G. V. Marais, Matsuo. general single-sludge wastewater systems. 21.5 (1987), 505–515. 10.1016/0043-1354(87)90058-3 S. Lu, Imai, Ukita, Sekine, Higuchi, Fukagawa. membrane bioreactor concept formation degradation soluble microbial products. 35.8 (2001), 2038–2048. 10.1016/S0043-1354(00)00461-9 Balakrishnan, H. Sidhu, D. Chen. fundamental analysis continuous flow models reactor Chem. Eng. 140.1-3 (2008), 521–528. 10.1016/j.cej.2007.11.035 Watt, F. Hai. Performance (number 1). Food Bioprod. Process. 116 (2019), 41–53. 10.1016/j.fbp.2019.03.014 Wei, Van Houten, Borger, Eikelboom, Fan. Minimization 37.18 (2003), 4453–4467. 10.1016/S0043-1354(03)00441-X S.-H. Yoon Lee. Critical operational parameters zero combined with 39 (2005), 3738–3754. 10.1016/j.watres.2005.06.015