复合厌氧折流板反应器-廊道式人工湿地系统运行效果

该文采用复合厌氧折流板反应器-廊道式人工湿地（Combined Anaerobic Baffled Reactor and Corridor Constructed Wetland，简称CABR-CCW）系统进行生活污水处理试验，系统分析了CABR-CCW系统的COD去除效果、脱氮除磷效果及水生植物在人工湿地系统中的作用。监测了2006年4月到2007年1月期间复合系统的运行效果，结果显示：CABR-CCW系统稳定运行后，污水日处理量为5 m3，HRT约为50 h，夏秋季CODCr平均去除率为78.9%，NH3-N平均去除率为89.29%；在不改变日处理量的情况下，冬季CODCr平均去除率约56.6%，NH3-N去除率下降幅度较大，但保持在47%以上。由于CCW采用了煤渣、页岩等高吸附磷的基质，磷去除率始终保持在83.6%以上，夏秋季由于CCW水生植物吸收，去除率高达92.3%，表明磷的去除主要依靠CCW基质的吸附，而且基质吸附能力仍未达到饱和，但已表现出下降趋势。廊道式人工湿地水生植物的长势对NH3-N的去除有显著影响，对磷的去除效果影响不大。

Operational efficiencies of combined anaerobic baffled reactor and corridor constructed wetland system for domestic wastewater treatment

The operational efficiencies of combined system with anaerobic baffled reactor and corridor constructed wetland (CABR-CCW) for domestic wastewater treatment，including CODCr removal, ammonia removal, phosphorus removal and the role of the plants, were analyzed in this paper. The results revealed that the average removal rates of CODCr and ammonia (NH3-N) of CABR-CCW were 78.9% and 88.55%, respectively, in summer and autumn with HRT (hydraulic retention time) of about 50 hours. However, the average removal rate of CODCr was 56.6%, and that of NH3-N remained above 47%, without changing the daily treatment capacity. The removal rate of phosphorus remained above 83.6%, and 92.3% in summer as a result of the absorption of the plants in CCW due to the use of special substrate such as cinder and shale. So the removal of phosphorus mostly attributed to the adsorption of substrate of CCW. The adsorption capability of substrate did not reach saturation, but the data showed a downtrend. The effect of the plants in CCW is remarkable to NH3-N removal, but unremarkable to phosphorus removal.