【作者】 郑蓓； 张小平； 李露； 李跃增；

【Author】 Zheng Bei;Zhang Xiaoping;Li Lu;Li Yuezeng;Central and Southern China Municipal Engineering Design & Research Institute Co.,Ltd;

【机构】 中国市政工程中南设计研究总院有限公司；

【摘要】 交替式间歇曝气移动床生物膜反应器处理低浓度城市污水。聚氨酯海绵填料填充率20%,水温20~32℃,无排泥连续运行205d,考察了不同间歇曝气工况和间歇周期运行模式下反应器对碳氮磷和悬浮物的处理效果。中试试验表明,在单级反应器同一物理空间内能够同步实现碳氮磷和悬浮物的去除过程;间歇曝气工况对COD、总磷和悬浮物的去除无明显影响,对氮的去除影响显著;合适的间歇曝气工况条件可以获得良好的脱氮效果;在进水低碳源条件下,调整间歇周期运行模式,反应器同步硝化反硝化效率可以提高39~45%,脱氮效率得到有效改善;生物除磷过程则一定程度上受到低碳源的抑制。更多还原

【Abstract】 An alternating intermittent aeration sequencing moving bed biofilm reactor was developed for treating low strength municipal wastewater. A pilot plant was operating with 20% filling ratio of polyurethane sponges and a water temperature range of 20 ~ 32℃ during 205 days operation without sludge discharge. The performances of simultaneous removal of carbon,nitrogen and phosphorus and solids separation were investigated under different intermittent aeration conditions and different sequencing batch operation modes in the reactor. The results showed that simultaneous removal of carbon,nitrogen and phosphorus and solids separation was achieved in the same physical space of the single-stage reactor during the period of the operation. Intermittent aeration conditions had negligible effects on performances of COD and TP removal and solids separation,but strong effects on nitrogen removal. Effective removal of nitrogen has been achieved under suitable intermittent aeration conditions adapting to environment. With the change of sequencing batch operation modes, efficiencies of simultaneous nitrification and denitrification have been enhanced by 39 ~ 45%,and the reactor became more efficient on nitrogen removal under the low strength conditions. The results also showed that low carbon resource in influent was a restrictive factor on the performance of biological phosphorus removal.更多还原