Evaluation of the Effectiveness of Five Odor Reducing Agents for Sewer System Odors Using an On-Line Total Reduced Sulfur Analyzer

Sensors

Il Choi²  Hyunjoo Lee²  Joungdu Shin¹ 

[1] Department of Climate Change & Ecology, National Academy of Agricultural Science, RDA, Suin-ro, 126th, Gwonseon-gu Suwon Gyeonggi-do, Suwon 441-707, Korea; E-Mail:;Department of Energy and Environmental System Engineering, University of Seoul, 90 Jeonnong-dong, Dongdaemun-gu, Seoul 130-743, Korea; E-Mails:

关键词: sewer odor;    on-line TRS analyzer;    odor-reducing agent;    NaOCl;   

DOI  :  10.3390/s121216892

来源: mdpi

【 摘 要 】

Sewer odors have been a concern to citizens of the Metropolitan Seoul region, which has installed combined sewer systems (CSSs) in 86% of its area. Although a variety of odorants are released from sewers, volatile sulfur compounds (VSCs) have been recognized as major ones. A number of technologies have been proposed to monitor or control odors from sewers. One of the most popular strategies adopted for the control of sewage odor is by applying a commercial odor-reducing agent into the sewer. In this study, the effectiveness of five different commercial odor-reducing agents (i.e., an odor masking agent, an alkaline solution, two microbial agents, and a chemical oxidant) was evaluated by continuously monitoring VSCs released from the sewer with an on-line total reduced sulfur (TRS) analyzer before and after each agent was sprayed into CSSs at five different locations of the city. In short, when the effectiveness of odor treatment was tested in the sewer system using five commercial odor reducing treatments, only the chemical oxidant was good enough to reduce the odor in terms of TRS levels measured before and after the application (p < 0.01).

【 授权许可】

CC BY   
© 2012 by the authors; licensee MDPI, Basel, Switzerland