title: [Source emission characteristics of malodorous volatile organic carbonyls from a municipal sewage treatment plant].
abstract: A 4-day field observation was conducted at Liede sewage treatment plant in Guangzhou, using PFPH/GC/MS method to analyse the composition and the concentration of volatile carbonyl compounds, and investigate the source emission characteristics of the pollutants. The results were as follows: 18 carbonyl species were detected, which including 15 malodorous volatile carbonyls with a concentration range from 0.39 microg x m(-3) to 19.92 microg x m(-3) at six processing units. Mean value of the total malodorous volatile carbonyls was (68.66 +/- 10.05) microg x m(-3). Normalization data process was used to research the source emission profile for malodorous volatile carbonyls, formaldehyde, acetaldehyde, propionaldehyde, 2-butanone, butyraldehyde and hexaldehyde were found to be molecular markers of the source emission with their percentage of total carbonyls up to 78.91%. Hexaldehyde was the most abundant carbonyl species with an average concentration of 11.71 microg x m(-3). Using a calculation model of area source emission, it estimated that the total annual emissions of the municipal sewage treatment plant was 2 302.33 kg(-1), and the contribution ratio of each processing unit was in an order of biochemical reaction basin, concentration basin, grade A aeration, ascending pump room, grit basin, dewatering house. The malodorous emission of sewage treatment plant is affected by many complex factors, so there's some uncertainty on the estimate.
authors.affiliation: Department of Environment Engineering, Jinan University, Guangzhou 510632, China. zhoumimi113@yahoo.com.cn
authors.forename: Mi
authors.initials: M
authors.lastname: Zhou
authors.forename: Bo-Guang
authors.initials: BG
authors.lastname: Wang
authors.forename: De-Jun
authors.initials: DJ
authors.lastname: Zhao
authors.forename: Chun-Lin
authors.initials: CL
authors.lastname: Zhang
authors.forename: Yin-Gang
authors.initials: YG
authors.lastname: Gu
mesh_terms: D000079:Acetaldehyde / Q000032:analysis; D000393:Air Pollutants / Q000032:analysis; D000447:Aldehydes / Q000032:analysis*; D002681:China; D002947:Cities; D004784:Environmental Monitoring / Q000379:methods; D005557:Formaldehyde / Q000032:analysis*; D009812:Odorants; D012722:Sewage / Q000737:chemistry; D055549:Volatile Organic Compounds / Q000032:analysis / Q000737:chemistry*; D014865:Waste Disposal, Fluid
chemical_list: D000393:Air Pollutants; D000447:Aldehydes; D012722:Sewage; D055549:Volatile Organic Compounds; D005557:Formaldehyde; D000079:Acetaldehyde