• 关键词：小城镇污水  脱氮

• 基金项目：国家十五科技攻关项目(No.2003BA808A17-02-02)

• 周健
• 重庆大学三峡库区生态环境教育部重点实验室, 重庆 400045

• 李志刚
• 重庆大学三峡库区生态环境教育部重点实验室, 重庆 400045

• 龙腾锐
• 重庆大学三峡库区生态环境教育部重点实验室, 重庆 400045

• 姜文超
• 重庆大学三峡库区生态环境教育部重点实验室, 重庆 400045

• 杨涛
• 重庆大学三峡库区生态环境教育部重点实验室, 重庆 400045

• 摘要：采用新型一体化多级生物膜反应器处理高氮小城镇污水,在反应器中实现了高效的同步硝化反硝化脱氮,同时采用多点进水方式解决了脱氮低碳源问题.试验结果表明,在温度20℃,有机负荷(COD)为0.85kg·m^-3·d^-1、氮负荷为0.27kg·m^-3·d^-1、HRT为9h、分点进水条件下,可使进水COD为320mg·L^-1,TN为97mg·L^-1,NH₄

• Abstract：Anew type of integrated multistage biofilm reactor was developed for municipal wastewater treatment in small cities and towns. In the experimental study, simultaneous nitrification and denitrification for nitrogen removal was accomplished with high efficiency. By multipoint feeding, the low carbon source problem was also solved. The experimental conditions were: temperature 20℃, organic loading 0.85kg·^-3·d^-1, and nitrogen loading 0.27 kg·^-3·d^-1using a HRT of 9 h and multipoint feeding. When the COD, TNand NH₄⁺-Nwere 320 mg·L^-1, 97 mg·L^-1 and 84 mg·L^-1, respectively, the quality of the effluent was 16 mg·L^-1 COD, 19.1 mg·L^-1 TNand 6.86 mg·L^-1 NH₄⁺-N, which is compliant with national class Ⅰ Beffluent standards.

• Key words：municipal wastewater of small-sized cities and towns  nitrogen removal

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