活性污泥作用下固体碳源释碳及脱氮性能比选  

Comparison and Characteristics of Carbon Releasing of Solid Carbon Source and Nitrogen Removal under the Effect of Activated Sludge

作　　者：孙凤海[1] 刘昱迪 方远航 傅金祥[1] 唐婧[1] 张旭[2] 

机构地区：[1]沈阳建筑大学市政与环境工程学院,辽宁沈阳110168 [2]东北大学设计院有限公司,辽宁沈阳110004

出　　处：《沈阳建筑大学学报（自然科学版）》2017年第1期111-118,共8页Journal of Shenyang Jianzhu University：Natural Science

基　　金：国家水体污染控制与治理科技重大专项(2014ZX07202-011)

摘　　要：目的研究不同固体碳源在活性污泥作用下的释碳特性,优选出释碳性能良好的反硝化碳源种类,进而解决低碳氮比污水脱氮效果不佳的问题,并实现农业废弃物的资源化利用.方法采用室内静态试验,以玉米芯(有皮玉米芯和无皮玉米芯)、大豆壳、稻秆为外加固体碳源,通过比较各固体碳源沉降性、碳源浸泡液可生化性、及活性污泥作用下的水解释碳特性,优选出释碳品质良好,适宜作为反硝化外加碳源的固体碳源.结果有皮玉米芯和稻秆可在7 d和4 d内完全去除50 mg的硝酸盐氮,在浸泡过程中水解产生的累积葡萄糖质量浓度占COD释放量的37.11%和24.62%.结论有皮玉米芯和稻秆的释碳品质较大豆壳更佳,更适宜作为外加碳源应用于反硝化脱氮研究.The characteristics of carbon releasing of kinds of solid carbon source under the effect of activated sludge were studied. Optimal selection of suitable carbon source was gotten. It could solve the problem which led to poor effect on nitrogen removal of sewage. And it could achieve the utilization of agricultural waste. Corncob （including corncob with epidermis and corncob without epidermis）, soybean hull and rice straw were prepared and used as solid carbon source for denitrifying bacteria by a static test. This paper focused on the settle ability of carbon source, biodegradability and the carbon releasing characteristics of carbon soakage liquid were investigated and compared. The optimal and high quality carbon releasing of carbon source would be selected. It was demonstrated that systems using corncob with epidermis and rice straw could remove 50 mg of nitrate nitrogen after 7 d and 4 d. Glucose releasing accounted for 37.11% and 24.62% of COD under the effect of activated sludge. They were more suitable for carbon source because of high quality and the moderate release capacity than soybean hull.

关 键 词：固体碳源 释碳特性 可生化性 反硝化 

分 类 号：X703[环境科学与工程—环境工程]