A practical framework using odor survey data to prioritize nuisance odors

Area of Science:

• Environmental Science
• Environmental Engineering
• Public Health

Background:

• Nuisance odors from wastewater treatment plants (WWTPs) negatively impact surrounding communities.
• Effective odor management requires understanding odor sources, characteristics, and fenceline occurrence.

Purpose of the Study:

• To develop a practical framework for prioritizing nuisance odor mitigation at WWTP fencelines.
• To identify key factors contributing to odor nuisance and guide management strategies.

Main Methods:

• Conducted 20 fenceline odor surveys at a WWTP between April and November.
• Collected data on odor type, intensity, and occurrence, considering meteorological factors.
• Developed a three-step framework: data summarization, annoyance factor calculation, and priority rating.

Main Results:

• Odor surveys captured variations influenced by wind, stability, and obstructions.
• A framework was established to quantify odor annoyance based on type and strength.
• Priority ratings for mitigation were determined using annoyance factors and fenceline occurrence.

Conclusions:

• The developed framework provides a systematic approach to prioritizing nuisance odor mitigation at WWTPs.
• Addressing odor intensity, quality, and persistence is crucial for effective management.
• This method aids in improving environmental quality and community satisfaction.