Hybrid System Coupling Moving Bed Bioreactor with UV/O3 Oxidation and Membrane Separation Units for Treatment of Industrial Laundry Wastewater

Materials
Sylwia MoziaAntoni Waldemar Morawski

Abstract

This paper describes the investigations on the possibilities of treatment of wastewater generated in an industrial laundry with application of a combined biological-photooxidation- membrane system aimed at water recycle and reuse. The two treatment schemes were compared: 1) scheme A consisting of a treatment in a moving bed biological reactor (MBBR) followed by microfiltration (MF) and nanofiltration (NF), and 2) scheme B comprising MBBR followed by oxidation by photolysis enhanced with in situ generated O3 (UV/O3) after which MF and NF were applied. The removal efficiency in MBBR reached 95-97% for the biochemical oxygen demand; 90-93% for the chemical oxygen demand and 89-99% for an anionic and a nonionic surfactants. The application of UV/O3 system allowed to decrease the content of the total organic carbon by 68% after 36 h of operation with a mineralization rate of 0.36 mg/L·h. Due to UV/O3 pretreatment, a significant mitigation of membrane fouling in the case of both MF and NF processes was achieved. The MF permeate flux in the system B was over two times higher compared to that in the system A. Based on the obtained results it was concluded that the laundry wastewater pretreated in the MBBR-UV/O3-MF-NF system could be re...Continue Reading

References

Sep 21, 2001·Environmental Science & Technology·B Van Der Bruggen, C Vandecasteele
Feb 19, 2002·Water Research·Santiago EsplugasMiguel Rodríguez
Sep 7, 2002·Environmental Science & Technology·Kerry J Howe, Mark M Clark
Jan 1, 2008·Journal of Hazardous Materials·Tjasa G Bulc, Alenka Ojstrsek
Apr 22, 2015·Ecotoxicology and Environmental Safety·A SumishaS Chakraborty
Jun 29, 2016·Environmental Science and Pollution Research International·Sylwia MoziaAntoni W Morawski
Sep 28, 2017·Water Science and Technology : a Journal of the International Association on Water Pollution Research·Rong ChenYu-You Li
Feb 23, 2018·The Science of the Total Environment·Sławomira BeringAntoni Waldemar Morawski
Sep 4, 2018·The Science of the Total Environment·Tiago P DelfornoValéria M Oliveira

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