摘要
针对城镇污水处理中碳源不足影响系统脱氮能力的问题,分别以乙酸钠、葡萄糖作为外源性碳源,考察其对活性污泥反硝化脱氮能力的影响。研究结果表明:在碳源投加量分别为50,100,200 mg/L条件下,单位(g)NO-3-N去除增量所需乙酸钠/葡萄糖的投加量分别为8.24 g/49.02g、9.62g/22.57g、—/21.07g。乙酸钠可用作城镇污水脱氮除磷过程中的高效外源性碳源,但从污水处理运行经济性来看,需根据系统实际需去除NO-3-N的量,合理确定碳源投加量。
Aimed at the fact that the poor carbon sources of fast biodegradable organics in inflow could affect the denitrification capacity in municipal wastewater treatment plants,sodium acetate and glucose as external carbon sources were added to activated sludge system and their effects on denitrification capacity were studied.The research results demonstrated that external carbon source of sodium acetate and glucose were added by 50,100,200 mg / L respectively,which caused per gram NO3-N removal increment for sodium acetate / glucose were supposed to be added by 8.24g /49.02g、9.62g /22.57g、— / 21.07g.Therefore sodium acetate is considered as a highly effective external carbon source for the municipal wastewater treatment process,and the dosage of sodium acetate as external carbon sources will be determined on the basis of NO3-N removal increment.
出处
《环境工程》
CAS
CSCD
北大核心
2013年第5期127-131,共5页
Environmental Engineering
基金
国家自然科学基金项目(51078192)
国家水体污染控制与治理科技重大专项项目(2012ZX07203-004)
青岛市科技支撑计划项目项目(12-1-3-54-nsh)
中德国际合作课题项目(2012DFG91380)
关键词
生物脱氮
比反硝化速率
碳源
乙酸钠
葡萄糖
bio-denitrification
specific denitrification rate
carbon source
sodium acetate
glucose
