Odor and volatile organic compounds biotreatment using compact trickle bed bioreactors (CTBB) in a wastewater treatment plant

Bioresour Technol. 2023 May:376:128876. doi: 10.1016/j.biortech.2023.128876. Epub 2023 Mar 13.

Abstract

The main aim of this study was to optimize and maximize the impacts of odor and volatile organic compounds (VOCs) biodegradation in a wastewater treatment plant utilizing a pilot-scale compact trickle bed bioreactor (CTBB). A CTBB was built and tested for its long-term performance during which gases were supplied from the tank containing semi-liquid fats, oils, and fat waste. The concentrations of pollutants ranged from 0 to 140.75 mg/m3 H2S, 0 to 2500 mg/m3 VOCs, and 0 to 21.5 mg/m3 NH3. The CTBB was tested at different gas flow rates and at two pH values for the liquid phase: pH = 7.0 and 5.0. In the liquid phase, the pollutant removal efficiency was higher at pH = 7.0 than at pH = 5.0. Overall, the removal efficiency was between 81.5 % and 99.5 % for the VOCs and 87.5 % and 98.9 % for H2S, while NH3 removals were >99 %.

Keywords: Biodegradation; Compact trickle bed bioreactor; Odor; Volatile organic compound; Wastewater treatment plant.

MeSH terms

  • Bioreactors
  • Environmental Pollutants*
  • Filtration
  • Odorants
  • Volatile Organic Compounds*
  • Water Purification*

Substances

  • Volatile Organic Compounds
  • Environmental Pollutants