Abstract
The gas emissions from wastewater treatment plants (WWTPs) contain multiple chemical compounds, such as H2S, NH3 and volatile organic compounds (VOCs), which can cause odour nuisance and health hazards. Biological technologies, such as biotrickling filters (BTFs), are preferred due to their cost-effectiveness and eco-friendliness. The selection of the packing materials in these bioreactors is crucial due to their high purchase cost, frequent replacement and impact on the gas-liquid mass transfer. This research aims at evaluating the NH3, H2S and VOC abatement performance of novel packing materials from plastic byproducts from the water cycle at different gas residence times (EBRT). The experimental set-up consisted of three BTFs of 2 L of working volume constructed with three different packing materials: commercial Pall rings (control), recycled plastic (from bottle caps), and extruded recycled plastic materials in the form of an optimised 3D-printed carrier. The three BTFs supported a complete removal of H2S and NH3 at EBRTs of 30, 15, 10 and 6 s, and VOCs removal above 90 % at EBRTs of 30 and 15 s. The extruded recycled plastic materials in the form of optimised 3D-printed carrier supported toluene and α-pinene removals of 100 % at EBRTs of 30 and 15 s. The genus Thiobacillus was identified in the three BTFs. This research confirmed the potential of reused and recycled plastics from the integral water cycle as a packing material in BTFs devoted to odour treatment.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.