Comparing volatile organic compound emissions during equalization in wastewater treatment between the flux-chamber and mass-transfer methods

Diurnal Variation of Greenhouse Gas Emission from Petrochemical Wastewater Treatment Processes Using In-situ Continuous Monitoring System and the Associated Effect on Emission Factor Estimation

“…With this assumption, consistent emission factors of three GHGs between two approaches were obtained, as the emission factors of CH 4 and N 2 O were higher in the equalization tank (1.12 × 10 -4 to 7.97 × 10 kg CH 4 /kg COD and 1.05 × 10 -3 to 2.47 × 10 -3 kg N 2 O/kg N), respectively. Only with proper and reliable sampling and analytical methods to determine the GHG emissions from wastewater treatment processes, it becomes possible to correctly identify the characteristics of GHG emissions and to develop strategies to curtail the GHG emissions from such an important source in response to regulatory measures Yang et al, Aerosol and Air Quality Research, 17: 2608-2623, 20172620 and international treaties. Compared with previous literatures and IPCC, the GHG emission factors of CH 4 and N 2 O obtained from this study were lower than those measured in Netherlands, Australia, and IPCC, but similar to those measured in Japan.…”

“…In this study, the emission fluxes of three GHGs were calculated by using Eq. (1) (Hobson, 2012;Taiwan EPA, 2013;Yan and Liu, 2014;Chen et al, 2017).…”

Gaseous Emissions from Wastewater Facilities

“…Volatile organic compound emissions during wastewater equalization at three industrial WWTPs were analyzed by Chen et al (2017) using the flux-chamber and mass-transfer methods. Both methods were found similar and effective in quantifying VOC emissions during wastewater equalization although the flux-chamber method could be a preferred method given its economic applicability.…”

Complementary use of GCxGC–TOF–MS and statistics for differentiation of variety in biosolid samples

“…Execution of these processes is indispensable for further processing of the biosolid cakes; however, it does not ensure total removal of all potentially hazardous chemical and odoriferous compounds [8]. The investigations on the determination of the compounds released from the biosolid cakes show that their variety significantly hinders identification of those, which have the most negative influence on the environment.…”

“…The main unit operations, such as biosolid stabilization, composting, dewatering, drying, or thermal processing, are carried out in the wastewater treatment plants to limit negative environmental impact [ 7 ]. Execution of these processes is indispensable for further processing of the biosolid cakes; however, it does not ensure total removal of all potentially hazardous chemical and odoriferous compounds [ 8 ]. The investigations on the determination of the compounds released from the biosolid cakes show that their variety significantly hinders identification of those, which have the most negative influence on the environment.…”