厨余发酵液作为SBR碳源的脱氮除磷特性  

Characteristics of Nitrogen and Phosphorus Removal in SBR Process with Fermentation Liquid of Food Waste as External Carbon Source

作　　者：何腾[1] 熊家晴[1] 王晓昌[1] 唐嘉陵[1] 

机构地区：[1]西安建筑科技大学环境与市政工程学院西北水资源与环境生态教育部重点实验室,陕西西安710055

出　　处：《中国给水排水》2016年第13期26-30,共5页China Water & Wastewater

摘　　要：为了提高SBR反应器的脱氮除磷性能,利用某校园厨余发酵液作为补充碳源进行生活污水处理试验研究。结果表明,发酵液中含有大量易降解有机物,能在厌氧条件下被微生物快速利用,实现较快的反硝化速率和释磷速率,投加厨余发酵液后,SBR反应器的脱氮除磷效果明显提高,对NH_4^+-N、TN、PO_4^(3-)-P的平均去除率分别达到了98%、78%、85%。试验过程中还发现,释磷和吸磷速率在第一阶段最大,硝化和反硝化速率在三个阶段均较高,但有所差异。进水中的PO_4^(3-)-P主要在第一阶段被去除,而TN主要在第二阶段被去除。Fermentation liquid of food waste （FLFW） from a university was utilized as the external carbon source to improve nitrogen and phosphorus removal efficiency in the SBR process for treatment of domestic sewage. The results showed that the readily biodegradable fractions in FLFW could be utilized by anoxic microorganisms, thus achieving high denitrification and phosphate release rate. After adding the FLFW, the nitrogen and phosphorus removal efficiency in the SBR process was improved obviously. The average removal rates of NHf - N, TN and PO3 addition, the phosphate release and uptake rate were - P were 98%, 78% and 85% respectively. In highest in the first denitrification rates in all stages were high with somewhat difference. The phosphate was removed in the first stage, while the TN was mainly eliminated in the second stage.

关 键 词：厨余发酵液 SBR 释磷速率 反硝化 

分 类 号：X703[环境科学与工程—环境工程]