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首页> 外文会议>International Conference on Sustainable Energy, Environment and Information Engineering >Spatio-temporal Variation of Nitrogen in River Water and Groundwater Recharged by Recycled Water at Qingyang River
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Spatio-temporal Variation of Nitrogen in River Water and Groundwater Recharged by Recycled Water at Qingyang River

机译：青阳河回收水充电河水和地下水中氮气的时空变化

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Municipal wastewater reclamation and reuse has been an effective way to solve problems of shrinkage and drying up of rivers and lakes. The residual pollutants in recycled water may pose a risk to groundwater. A field study on the spatial and temporal variations concentrations of nitrate, ammonia and chemical oxygen demand (COD) was conducted in Beijing, where recycled water is used to recharge dry rivers. And the effect of a riverbank filtration (RBF) on the nitrogen and organics removal from the Qingyang River was investigated. Water samples from recycled water, river water and groundwater were collected for nitrate, ammonia and COD measurement. The results indicated that river water quality was improved when recycled water was refilled to the river course. The concentration of nitrogen and total phosphorus decreased along the flow directions in the Qingyang River. Higher temperature in summer can promote nitrogen and COD removal in the river. The results indicate that about 63%, 89% and 41% of nitrate, ammonia and COD was removed from the river bank filtration. These results indicate that improving the removal of nitrogen and organics in recycled water and optimizing the management of recharging operation could reduce the risks of nitrogen and organics.
机译：市政污水填海和重用是解决河流和湖泊的收缩问题和干燥的有效方法。再生水中的残留污染物可能对地下水产生风险。对北京进行了硝酸盐，氨和化学需氧量（COD）的空间和时间变化浓度的田间研究，其中回收水用于充电干燥的河流。研究了河岸过滤（RBF）对清阳河氮和有机物的影响。收集来自再生水，河水和地下水的水样用于硝酸盐，氨和COD测量。结果表明，当河流河流进入河流过程时，河水质量得到改善。氮气的浓度和总磷的浓度沿清阳河流的流动方向下降。夏季较高的温度可以促进河流中的氮气和鳕鱼。结果表明，从河岸过滤中除去约63％，89％和41％的硝酸盐，氨和鳕鱼。这些结果表明，改善再循环水中的氮和有机物和优化再充电操作管理可以降低氮气和有机物的风险。

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