A study on odour impact and control for sewage treatment plant

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A study on odour impact and control for sewage treatment plant

 

Author: Kwok, Ka-wing Gavin
Title: A study on odour impact and control for sewage treatment plant
Degree: M.Sc.
Year: 2002
Subject: Hong Kong Polytechnic University -- Dissertations
Sewage disposal plants -- China -- Hong Kong -- Management
Sewage disposal plants -- Odor control
Department: Multi-disciplinary Studies
Dept. of Civil and Structural Engineering
Pages: v, 115, 3, [45] leaves : col. ill., col. maps ; 30 cm
Language: English
InnoPac Record: http://library.polyu.edu.hk/record=b1685343
URI: http://theses.lib.polyu.edu.hk/handle/200/3388
Abstract: Odour impact assessments for sewage treatment facilities in Hong Kong were generally carried out by olfactometry and chemical analysis in past studies. The sensor array system (electronic nose) is an alternative approach for the identification of sewage odour impact and has been applied in this study. This study aimed at investigating the sewage impact from the selected sewage treatment facilities in Hong Kong. perational information and the common odour issues occurring in those sewage treatment facilities were requested from the Drainage Services Department by a questionnaire survey. Field surveys were also conducted to obtain information on the site conditions and to record the actual perception of odour at the perimeter of representative sewage treatment facilities. Lastly, odour samples were taken during the field survey at representative locations and measured by an electronic nose. The odour impact from the sewage treatment facilities was determined by comparing the odour profiles and data using the Similarity Index and Principal Component Analysis. It was found that odour measured at a sewage screening plant boundary was similar to the odour measured at the nearest receiver location. The overall results indicated that odour generated from the sewage treatment facilities, though provided with various types of odour control measures at individual treatment plants, still affected the immediate surrounding environment, particularly receivers that were located very close to the boundary of the plant and also nearby road users. These were confirmed by compiling the findings of the questionnaire, observations from the field survey, and comparison of odour profiles measured at the sewage treatment plant boundary and the sensitive receivers.

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