TY - JOUR
T1 - Simulating the impact of ozonation on biodegradation characteristics of industrial wastewater concentrated with membrane filtration
AU - Ozyildiz, Goksin
AU - Bodur, Minel
AU - Dilsizoglu-Akyol, Nergis
AU - Kilicarpa, Ayca
AU - Olmez-Hanci, Tugba
AU - Cokgor, Emine
AU - Kilinc, Cem
AU - Okutan, Hasan Can
AU - Insel, Güçlü
N1 - Publisher Copyright:
© 2023 Elsevier Ltd.
PY - 2023/4
Y1 - 2023/4
N2 - The biodegradation of raw wastewater for an organized industrial zone has been studied by means of dedicated respirometric and analytical experiments. The experimental results indicated that the investigated industrial wastewater contains mainly the soluble (slowly) hydrolysable fraction of chemical oxygen demand (COD) (58 %) while readily biodegradable and soluble inert fractions were in the order of 19 % and 3 %, respectively. Full-scale dynamic modeling results successfully confirmed the validity of estimated COD fraction and biodegradation kinetics. End of pipe wastewater reuse potential studied with a pilot plant revealed that almost 100 % soluble inert organics could be concentrated in reverse osmosis (RO) reject. Expectedly, the concentration was far above the COD discharge limit of 200 mg/L. Subsequently, the application of specific ozone dose around 7 kg O3/(kg COD·hour) on RO concentrates was not sufficient to secure the discharge limit by itself. However, the ozone oxidation converted 85 % of inert COD into the (soluble) slowly biodegradable organic matter. The modeling studies also showed that biodegradable organic matter generated by ozonation has much lower degradation kinetics compared to mainstream sequencing batch reactor system.
AB - The biodegradation of raw wastewater for an organized industrial zone has been studied by means of dedicated respirometric and analytical experiments. The experimental results indicated that the investigated industrial wastewater contains mainly the soluble (slowly) hydrolysable fraction of chemical oxygen demand (COD) (58 %) while readily biodegradable and soluble inert fractions were in the order of 19 % and 3 %, respectively. Full-scale dynamic modeling results successfully confirmed the validity of estimated COD fraction and biodegradation kinetics. End of pipe wastewater reuse potential studied with a pilot plant revealed that almost 100 % soluble inert organics could be concentrated in reverse osmosis (RO) reject. Expectedly, the concentration was far above the COD discharge limit of 200 mg/L. Subsequently, the application of specific ozone dose around 7 kg O3/(kg COD·hour) on RO concentrates was not sufficient to secure the discharge limit by itself. However, the ozone oxidation converted 85 % of inert COD into the (soluble) slowly biodegradable organic matter. The modeling studies also showed that biodegradable organic matter generated by ozonation has much lower degradation kinetics compared to mainstream sequencing batch reactor system.
KW - Activated sludge model
KW - Degradation kinetics
KW - Industrial reuse
KW - Reverse osmosis
KW - Soluble microbial products
UR - http://www.scopus.com/inward/record.url?scp=85147194505&partnerID=8YFLogxK
U2 - 10.1016/j.jece.2023.109286
DO - 10.1016/j.jece.2023.109286
M3 - Article
AN - SCOPUS:85147194505
SN - 2213-2929
VL - 11
JO - Journal of Environmental Chemical Engineering
JF - Journal of Environmental Chemical Engineering
IS - 2
M1 - 109286
ER -