Abstract
The study aims to identify important challenges that the practitioners and researchers in wastewater collection systems are facing in order to reduce the emissions of hydrogen sulphide and greenhouse gas emissions. Based on literature review, it identifies the main technologies used for avoiding and removing odorous compounds from wastewater gas streams. The paper also highlights issues pertaining to the emission and biofiltration of hydrogen sulphide, methane and nitrous oxide from sewage conveyance from Bacau city. The results illustrate that the eco-innovative technologies as it is the case in the vacuum system and biofiltration have an important potential to mitigate the environmental impact of wastewater collection in what concerns the emission of harmful gases (hydrogen sulphide) and greenhouse gas emissions at the level of lift stations or vacuum stations.
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