葛士建1, 曹旭1, 马斌2, et al. Achievement and maintenance of denitrifying phosphorus removal in step feed nutrient removal process[J]. CIESC Journal, 2011, (9).DOI:
分段进水脱氮除磷工艺中反硝化除磷的实现与维持
摘要
Abstract
Denitrifying phosphorus removal was stably achieved with a biological step feed nutrient removal process from real municipal wastewater.The effects of operational parameters on the denitrifying phosphorus removal and the improvement of nutrient removal by intensifying anoxic phosphorus uptake as well as control strategies about maintenance of denitrifying phosphorus removal in the modified University of Cape Town(UCT)step feed process were discussed.The results indicated that denitrifying accumulating bacteria(DPAOs)could be successfully enriched with the maximum proportion and anoxic phosphorus uptake rate of 39.2% and 3.19—4.48 mg P·(g VSS)-1·h-1 respectively,according to the process shift from the A/O model to the modified UCT model.Both anoxic and aerobic phosphorus uptake rates and phosphorus removal efficiency increased with the increase of anaerobic volumes,and the optimum anaerobic/anoxic/oxic volume distribution was 34/102/204L(1/3/6).When the sludge return ratio and internal recycle ratio were respectively set at 100% and 75%, 引用本文 葛士建1,王淑莹1