潮汐流人工湿地污水强化处理研究进展  

PROGRESS AND PROSPECTS OF POLLUTED WATER TREATMENT OF TIDAL FLOW CONSTRUCTED WETLAND

作　　者：柳明慧[1] 吴树彪[1] 鞠鑫鑫[2] 鲁其敏 陈理[1] 董仁杰[1] 

机构地区：[1]中国农业大学工学院 [2]中国农业大学水利与土木工程学院,北京100083

出　　处：《水处理技术》2014年第5期10-15,共6页Technology of Water Treatment

基　　金：国家自然科学基金项目(51308536);高等学校博士学科点专项科研基金(20130008120018)

摘　　要：人工湿地系统床体中的氧环境及湿地床体的复氧能力是决定有机物与氨氮去除的主要因素,直接影响湿地对污染物的净化效果及正常运转。作为一种新型强化人工湿地,潮汐流人工湿地可以通过潮汐运行过程中床体浸润面变化产生的孔隙吸力将大气氧吸入床体,进而明显提高了湿地床的氧传输量和污染物的净化效果。相比于传统的人工湿地,潮汐流人工湿地的复氧能力可达450 g/(m2·d),远高于传统的潜流型人工湿地和曝气型人工湿地(≤100g/(m2·d))。对潮汐流人工湿地的复氧机理和影响因素、污染物的去除机理进行了分析研究,并对潮汐流人工湿地的研究和应用现状、存在的问题进行了总结。结果表明,潮汐流人工湿地适合处理较高浓度污水,并可以应用于北方寒冷地区的污水中污染物的去除,且去除效果明显优于潜流等传统的人工湿地,具有较好的应用及发展前景。Capacity of re-oxygenation of constructed wetlands （CWs） has a great impact on the degradation of organic matter and ammonia nitrogen, playing a decisive role on the purifiCation and the function of the CWs. Tidal flow constructed wetlands （TFCWs）, as a newly developed type of enhanced CWs, can inhale the oxygen from the atmosphere into matrices by small holes generated during infiltration surface changing in the process of tide operation, which improves the capacity of oxygen transfer of wetland bed and the purification effect of contaminant. Compared to the traditional CWs, the capacity of oxygen supply can reach up to 450 g/（m^2·d） in TFCWs, which is much higher than that of the subsurface flow CWs and the aerated CWs （ ≤ 100 g/（m^2·d））. This paper analyzes the principle of the oxygen supply the influence factors of TFCWs, and study on the principle of contaminant degradation which also sum the researches, application status and existing problems ofTFCWs. TheresultindicatesgoodperformanceofTFCWsonhandlinghigh concentrations ofwastewater. In addition, the contaminant removal efficiency of the TFCWs which is more suitable for the north cold area is better than that of any other traditional CWs, which predicts a bright prospect of this technology in dealing with wastewater.

关 键 词：潮汐流 人工湿地 复氧机理 氨氮去除 

分 类 号：X703[环境科学与工程—环境工程]