水资源与水工程学报2023，Vol.34Issue(6)：52-60,68,10.DOI:10.11705/j.issn.1672-643X.2023.06.07
短程硝化-强化生物除磷序批式反应器处理畜禽养殖废水
Partial nitrification-enhanced biological phosphorus removal of a sequencing batch reactor for treating livestock wastewater
摘要
Abstract
Direct discharge of livestock wastewater seriously harms the environment,due to the significant changes in water quality and quantity it brings forth,and the high concentrations of organic matter,am-monia nitrogen,and phosphorus the waste water contains.Here,changes in pollutant removal perform-ance and microbial community structure of a kind of pre-acidified high-strength livestock wastewater were investigated on laboratory scale by means of the anaerobic-aerobic sequencing batch reactor(SBR)under different influent loading conditions.The results showed that the removal rates of the total nitrogen(TN),orthophosphorus(PO43-—P)and chemical oxygen demand(COD)in the high load influent pro-cessed by the SBR reached 64.5%,97.5%and 94.5%,respectively.The reactor presented shortcut nitrification with simultaneous accumulation of NH4+—N and NO2—N,which may be related to the effect of high influent loading on the activity and populations of ammonia-and nitrite-oxidizing bacteria.The en-hanced biological phosphorus removal activity of the sludge was higher when propionate was used as the carbon source instead of acetate.The relative abundance of glycogen accumulating organisms(GAOs)in-creased significantly with the increase of influent loading.Tetrasphaera was the consistently dominant polyphosphate accumulating organisms(PAOs)in the reactor and contributed significantly to phosphorus removal performance.With a high concentration of organic matter,there was no significant substrate com-petition between PAOs and GAOs in SBR,and the nitrogen and phosphorus removal performance of the system was not affected.关键词
畜禽养殖废水/短程硝化/强化生物除磷/序批式反应器/聚糖菌/聚磷菌Key words
livestock wastewater/partial nitrification/enhanced biological phosphorus removal/sequen-cing batch reactor(SBR)/glycogen accumulating organisms(GAOs)/polyphosphate accumulating or-ganisms(PAOs)分类
资源环境引用本文复制引用
王莉,秦璐,黄梦博,曹瑞,郑兴,王东琦..短程硝化-强化生物除磷序批式反应器处理畜禽养殖废水[J].水资源与水工程学报,2023,34(6):52-60,68,10.基金项目
国家自然科学基金项目(52070156) （52070156）
陕西省留学人员科技活动择优资助项目 （）
陕西省秦创原"科学家+工程师"队伍建设项目(2022KXJ-115) （2022KXJ-115）
