再生水灌溉对绿地土壤及植物影响的研究

我国北方城市缺水问题严重,开发利用再生水用于灌溉是缓解水资源短缺的重要途径,开展再生水灌溉绿地的研究工作,有助于拓宽再生水利用范围,为再生水在绿地灌溉中的推广应用提供依据和指导.该文通过对北京北小河污水处理厂内绿地的实地调查,开展再生水灌溉绿地生态系统的研究,对再生水水质、土壤理化性质、植物生长等进行了系统的研究.结果表明:由于长期灌溉,二级处理水灌溉对绿地土壤和部分植物有一定的影响,可能会影响植物的正常生长,需提高污水处理程度,以使水质适用于绿地灌溉.

Impacts of reclaimed water irrigation on the plants and soil of greenbelt.

Due to lacking water in north China, it is important to explore reclaimed water irrigation. Studying the reclaimed water irrigation in greenbelt not only help to widen the reclaimed water utilization range, but also lay foundation and provide guide for the application and spread of reclaimed water in greenbelt. Based on the spot investigation in Beixiaohe Effluent Treatment Plant, the impact of irrigation on green space ecosystem with reclaimed water was studied in this paper, and the reclaimed water quality, soil characteristics and plants were studied systematically. Results showed that due to the long term irrigation, the soil and plants which were irrigated by the secondary treated water were affected to some extent, ie the secondary treated water may have an impact on plant growth. Therefore, the treatment level of effluent water which is used to irrigate green space should be improved.