title: Impact of paint shop decanter effluents on biological treatability of automotive industry wastewater.
abstract: A lab-scale Sequencing Batch Reactor (SBR) was implemented to investigate biological treatability and kinetic characteristics of paint shop wastewater (PSW) together with main stream wastewater (MSW) of a bus production factory. Readily biodegradable and slowly biodegradable COD fractions of MWS were determined by respirometric analysis: 4.2% (SS), 10.4% (SH) and 59.3% (XS). Carbon and nitrogen removal performance of the SBR feeding with MSW alone were obtained as 89% and 58%, respectively. When PSW was introduced to MSW, both carbon and nitrogen removal were deteriorated. Model simulation indicated that maximum heterotrophic growth rate decreased from 7.2 to 5.7day-1, maximum hydrolysis rates were reduced from 6 to 4day-1(khS) and 4 to 1day-1(khX). Based on the dynamic model simulation for the evaluation of nitrogen removal, a maximum specific nitrifier growth rate was obtained as 0.45day-1for MSW feeding alone. When PSW was introduced, nitrification was completely inhibited and following the termination of PSW addition, nitrogen removal performance was recovered in about 100 days, however with a much lower nitrifier growth rate (0.1day-1), possibly due to accumulation of toxic compounds in the sludge. Obviously, a longer recovery period is required to ensure an active nitrifier community.
authors.affiliation: Istanbul Technical University, Applied Biopolymer and Bioplastics Production Technologies Research Center, 34469, Maslak, Istanbul, Turkey. Electronic address: didemnl@yahoo.com.
authors.forename: Didem
authors.initials: D
authors.lastname: Güven
authors.affiliation: Daimler Buses EvoBus GmbH, Carl-Zeiss-Str. 2, 89231 Neu-Ulm, Germany. Electronic address: oytun.hanhan@daimler.com.
authors.forename: Oytun
authors.initials: O
authors.lastname: Hanhan
authors.affiliation: Mercedes-Benz Turk A.S., Esenyurt, 34519, Istanbul, Turkey. Electronic address: elif_ceren.aksoy@daimler.com.
authors.forename: Elif Ceren
authors.initials: EC
authors.lastname: Aksoy
authors.affiliation: Istanbul Technical University, Environmental Engineering Department, 34469, Maslak, Istanbul, Turkey. Electronic address: inselhay@itu.edu.tr.
authors.forename: Güçlü
authors.initials: G
authors.lastname: Insel
authors.affiliation: Istanbul Technical University, Environmental Engineering Department, 34469, Maslak, Istanbul, Turkey. Electronic address: ubay@itu.edu.tr.
authors.forename: Emine
authors.initials: E
authors.lastname: Çokgör
mesh_terms: D001336:Automobiles; D019149:Bioreactors; D002244:Carbon / Q000302:isolation & purification; D007220:Industrial Waste; D058465:Nitrification; D009584:Nitrogen / Q000302:isolation & purification; D010150:Paint; D014865:Waste Disposal, Fluid
chemical_list: D007220:Industrial Waste; D002244:Carbon; D009584:Nitrogen
keywords: Automotive industry; COD fractions; Modeling; Nitrogen removal; Paint shop effluents; Sequencing batch reactor