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Process Saf Environ Prot

Title:		"Simultaneous removal of bioaerosols, odors and volatile organic compounds from a wastewater treatment plant by a full-scale integrated reactor"
Author(s):		Liu J; Kang X; Liu X; Yue P; Sun J; Lu C;
Address:		"Beijing Engineering Research Center of Sustainable Urban Sewage System Construction and Risk Control, Beijing University of Civil Engineering and Architecture, Beijing 100044, China. School of Environment and Energy Engineering, Beijing University of Civil Engineering and Architecture, Beijing 100044, China"
Journal Title:		Process Saf Environ Prot
Year:		2020
Volume:		20200704
Issue:
Page Number:		2 - 14
DOI:		10.1016/j.psep.2020.07.003
ISSN/ISBN:		0957-5820 (Print) 1744-3598 (Electronic) 0957-5820 (Linking)
Abstract:		"Biological control of odors and bioaerosols in wastewater treatment plants (WWTPs) have gained more attention in recent years. The simultaneous removal of odors, volatile organic compounds (VOCs) and bioaerosols in each unit of a full-scale integrated-reactor (FIR) in a sludge dewatering room was investigated. The average removal efficiencies (REs) of odors, VOCs and bioaerosols were recorded as 98.5 %, 94.7 % and 86.4 %, respectively, at an inlet flow rate of 5760 m(3)/h. The RE of each unit decreased, and the activated carbon adsorption zone (AZ) played a more important role as the inlet flow rate increased. The REs of hydrophilic compounds were higher than those of hydrophobic compounds. For bioaerosols, roughly 35 % of airborne heterotrophic bacteria (HB) was removed in the low-pH zone (LPZ) while over 30 % of total fungi (TF) was removed in the neutral-pH zone (NPZ). Most bioaerosols removed by the biofilter (BF) had a particle size larger than 4.7 mum while bioaerosols with small particle size were apt to be adsorbed by AZ. The microbial community in the BF changed significantly at different units. Health risks were found to be associated with H(2)S rather than with bioaerosols at the FIR outlet"
Keywords:		Adsorption Bioaerosols Odors Risk assessment Two-phase biofilter VOCs;
Notes:		"PubMed-not-MEDLINELiu, Jianwei Kang, Xinyue Liu, Xueli Yue, Peng Sun, Jianbin Lu, Chen eng England 2020/08/25 Process Saf Environ Prot. 2020 Dec; 144:2-14. doi: 10.1016/j.psep.2020.07.003. Epub 2020 Jul 4"