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Method development for determining the malodor source and pollution in industrial park.

I-Fang Mao¹, Mei-Ru Chen, Lee Wang

¹Department of Occupational Safety and Health, Chung Shan Medical University, No. 110, Sec. 1, Jianguo N.Rd., Taichung, Taiwan.

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|September 5, 2012

Summary

Identifying industrial malodor sources is challenging. This study developed a method to pinpoint pollution origins in industrial parks, finding an open wastewater ditch to be a major source and linking odor intensity to total volatile organic compounds (TVOCs) and wind speed.

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Area of Science:

Environmental Science
Industrial Ecology
Air Quality Management

Background:

Malodor pollution from industrial parks is a significant environmental concern.
Accurately identifying the specific sources of malodor pollution presents a considerable challenge.
Effective management strategies require a clear understanding of pollution origins and contributing factors.

Purpose of the Study:

To develop and validate a model for identifying malodor sources and pollution levels within industrial parks.
To correlate odor intensity with key environmental factors, including air pollutant concentrations and meteorological conditions.
To pinpoint critical environmental factors influencing malodor perception and intensity.

Main Methods:

Selected a high-malodor industrial park (metal and petrochemical industries) near residential areas for study.
Implemented a chessboard sampling design with nine sites, measuring odor intensity and environmental factors over five days in fall and spring.
Collected data on odor intensity (0-5 scale), meteorological conditions, PM10, PM2.5, total volatile organic compounds (TVOCs), ammonia, and reduced sulfides six times daily.

Main Results:

Odor ratings of 1-5 occurred in 71.9% (fall) and 81.0% (spring) of measurements in the sampling area.
An open ditch collecting industrial wastewater was identified as the primary odor source.
Multiple regression analysis revealed significant correlations between odor rating, TVOC concentration (positive), and wind speed (negative).

Conclusions:

The study successfully developed a method for exploring and identifying malodor pollution sources in industrial parks.
An open industrial wastewater collection ditch was confirmed as a major contributor to malodor.
Odor intensity is significantly influenced by total volatile organic compounds (TVOCs) and wind speed, providing critical data for mitigation strategies.