Nitrification process modeling in intermittent sand filter applied for wastewater treatment

Author(s)

Magalhaes, Taina Martins ^[1] ; Tonetti, Adriano Luiz ^[1] ; Camargo Bueno, Daniel Augusto ^[1] ; Tonon, Daniele ^[1]

Affiliation

^[1] UNICAMP State Univ Campinas, Sch Civil Engn Architecture & Urban Design FEC, Ave Albert Einstein, 951, Cidade Univ Zeferino Vaz, BR-13083852 Campinas, SP - Brazil

• Document type: Journal article
• Source: ECOLOGICAL ENGINEERING; v. 93, p. 18-23, AUG 2016.
• Web of Science Citations: 3

Abstract

The aim of this study was to propose a nitrification process modeling in an intermittent sand filter (ISF) using the biofilm compartment of Aquatic Systems Simulations (AQUASIM) software and the activated sludge model (ASM1) published by Henze et al. (2000). We verified that the software and the initial modeling of equations were suitable for the nitrification modeling until the hydraulic loading rate of 400 Lm(-2)d(-1), organic loading rate of 155.6 gCOD m(-2)d(-1) and nitrogen loading rate of 20.4 gN-NH4+-N m(-2)d(-1). In order to adapt the modeling for all hydraulic loading rates (HLR) studied, the set of equations was complemented with the inclusion of an F factor. This factor adapts the ASM1 model to the condition of lesser interaction between influent and the biofilm due to hydraulic loading rate increasing. Thus, the AQUASIM software along with the proposed new modeling was able to simulate the process for all HLR ranging from 100 to 800 L m(-2)day(-1). (C) 2016 Elsevier B.V. All rights reserved. (AU)

• FAPESP's process: 11/21919-7 - Building at full scale and evaluation of low cost wastewater treatment from isolated society
• Grantee: Adriano Luiz Tonetti
• Support Opportunities: Regular Research Grants