Achievement and maintenance of denitrifying phosphorus removal in step feed nutrient removal process
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Achievement and maintenance of denitrifying phosphorus removal in step feed nutrient removal process
CIESC JournalIssue 9, (2011)
作者机构:
1. 1北京工业大学北京市水质科学与水环境恢复工程重点实验室,北京,100124
2. 哈尔滨工业大学城市水资源与水环境国家重点实验室,黑龙江,哈尔滨,150090
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Online First:05 September 2011,
Published:05 September 2011
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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:
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:
Achievement and maintenance of denitrifying phosphorus removal in step feed nutrient removal process
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