Sludge Reduction, Nitrous Oxide Emissions, and Phosphorus Removal by Oxic-Settling-anaerobic (OSA) Process: the Effect of Hydraulic Retention Time
Environmental Science and Pollution Research(2024)
摘要
This paper presents a study on reducing sewage sludge by an oxic-settling-anaerobic (OSA) pilot plant compared to the conventional activated sludge (CAS) process in view of resource recovery and moving towards plant carbon neutrality. The OSA plant was supplied with real wastewater and the anaerobic reactor was operated under two hydraulic retention times (HRT) (4 and 6 h). Greenhouse gas (GHG) emissions were monitored for the first time to determine the OSA process’s production mechanism. The results highlighted that under the lowest HRT (4 h), the removal efficiencies of COD and PO4−P, increased from 75 to 89
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关键词
Wastewater treatment,Oxic-settling-anaerobic process,Greenhouse gas emission,Nutrient removal,Sludge reduction
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