厨余发酵液与乙酸钠、葡萄糖脱氮性能的比较  

Comparison between fermentation liquid of food-waste and sodium acetate,glucose on denitrification potential

作　　者：程喆[1] 王晓昌[1] 张永梅[1] 李玉友[2] 乔宁[1] 

机构地区：[1]西安建筑科技大学环境与市政工程学院,西安710055 [2]日本东北大学环境科学研究院

出　　处：《环境工程学报》2015年第1期362-366,共5页Chinese Journal of Environmental Engineering

基　　金：国家自然科学基金资助项目(51178376)

摘　　要：通过与乙酸钠、葡萄糖对比,利用批式实验方法对厨余发酵液作为反硝化碳源的脱氮性能进行了研究。在不同COD/N条件下,对3种碳源的反硝化NOx--N去除率进行了比较,研究发现,当COD/N=6.5时,厨余发酵液可以满足反硝化对电子供体的要求,其反硝化潜能PD=0.146 g NOx--N/g COD。然后,在COD/N=5.0条件下,利用动力学方程对反硝化过程进行分段模拟,发现厨余发酵液组在Ss降解阶段的比反硝化速率为7.44 mg NO-x-N/(g VSS·h),其整个反硝化阶段的比反硝化速率是乙酸钠组的0.77倍,是葡萄糖组的2.1倍,结果表明,厨余发酵液可以作为快速降解碳源用于反硝化脱氮。Batch experiments were carried out to investigate the denitrification capacity of fermentation liquid of food-waste by comparison with sodium acetate and glucose. Rates of NOx--N reduction were compared under different COD / N ratios. It was found that,as electron donor,food-waste could meet the demand of dinitrification when the COD / N was 6. 5,with PD= 0. 146 g NOx--N / g COD. Kinetic equations were used to simulate each phase of dinitrification under COD / N = 5. 0,results showed that NUR achieved to 7. 44 mg NO-x-N /( g VSS·h) at the Ss metabolic phase for food-waste. And specific denitrification rate of food-waste was 0. 77 times of sodium acetate and 2. 1 times of glucose. So food-waste can be classified into readily organic substances.

关 键 词：厨余发酵液 葡萄糖 乙酸 反硝化潜能 反硝化速率 C/N 

分 类 号：X703.1[环境科学与工程—环境工程]