传统与短程反硝化的影响因素及特性研究  

Study on the Affecting Factors and Characteristics of Conventional Denitrification and Short-cut Denitrification

作　　者：张小玲[1] 彭党聪[1] 王志盈[1] 

机构地区：[1]西安建筑科技大学环境与市政工程学院,陕西西安710055

出　　处：《中国给水排水》2002年第9期1-3,共3页China Water & Wastewater

基　　金：国家自然科学基金资助项目 (5 98780 4 2 )

摘　　要：分别研究了传统反硝化中硝酸盐氮负荷、COD N、pH值对反硝化速率及效率的影响 ,得出传统反硝化时最大硝酸盐氮负荷为 0 .0 8kg (kgMLSS·d) ,合适的COD N为 6～ 7,适宜的pH值为 7.5～ 8。对分别以NO-3 和NO-2 为初始基质的反硝化速率进行的对比试验结果表明 ,在温度为 2 5℃、pH值为 7、基质浓度 <30 0mg L时以NO-2 为初始基质的反硝化速率较快 ,但当基质浓度 >30 0mg L后反而是以NO-3Study was made respectively on the influences of nitrate nitrogen loading, COD /N ratio and pH value on the rate and efficiency of conventional denitrification. The result showed that in the conventional denitrification, the maximum nitrate nitrogen loading can reach 0.08 kg/(kgMLSS·d) with the proper COD /N ratio of (6～7)∶1 and the optimal pH value of 7.5～8. The comparative study on the denitrification rate by using NO - 3 and NO - 2 as initial substrates indicated that at temperature of 25 ℃, pH value of 7, and substrate concentration < 300 mg/L, more rapid denitrification rate can be achieved based on NO - 2 of substrate; whereas at substrate concentration > 300 mg/L, the denitrification rate is faster based on NO - 3.

关 键 词：传统反硝化 短程反硝化 COD/N PH值 污泥 

分 类 号：X703.1[环境科学与工程—环境工程]