The purification of wastewater through the use of the plants (phytoepuration) was used in different areas and under various climates; it was tested successfully for organic pollution, for the elimination of phosphorus pollution, nitrogen pollution, metals, and for the destruction of the pathogenic germs. This study reports the monitoring of purifying performances of three plants, which show a good acclimatization in arid climate: Typha latifolia, Juncus effusus and Cyperus papyrus. The monitoring was carried out during one year from December to November in the southern Algeria. The experimental pilot set-up consists of four plastic barrels capacity of 130 L, filled from the bottom upwards to 45 cm thickness by gravel and 10 cm by sand, with opening located at 5 cm below the sand to avoid any overflow of water. Three barrels were planted with young stems of the studied species with the coverage of 36 stems/m², and the fourth barrel remained unplanted to serve as reference object. 30 L of wastewater which have undergone primary treatment at the purification station of Kouinine (north the town of El-Oued) was supplied to each barrel once a week. The flow occurred by percolation through the substrate. The residence time of water is 5 days. Treated water is recovered by a tap placed in bottom of the barrel. With the three tested plants, very satisfactory outputs were obtained for particulate and organic pollution, where the decrease rates of reached 96% for suspended matter (SM), 89% for the Chemical Oxygen Demand (COD), and 87% for the Biological Oxygen Demand (BOD₅). The elimination of nitrogen and phosphorous pollution resulted in decreasing rates of 94% for nitrates and 95% for orthophosphates. The planted bed of Juncus effusus gives the best outputs for the elimination of organic and nitrogen pollution. However, the planted bed of Cyperus papyrus is the most appropriate for the phosphorous pollution. In addition, the elimination of the organic pollutants decreases in summer; never the less the output of purification remains higher than 68% for all seasons.

中文翻译：

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干旱气候下香蒲，杜鹃，纸莎草的净化性能：季节变化的影响

通过在不同地区和不同气候下使用植物来净化废水（植物净化）。已成功测试了有机污染，消除磷污染，氮污染，金属以及破坏病原菌的能力。这项研究报告了对三种植物的净化性能的监测，这三种植物在干旱气候下表现出良好的适应性：香蒲，Jun叶草和莎草纸莎草。。监测从12月至11月在一年中的阿尔及利亚南部进行。试验性的先导装置由四个容量为130 L的塑料桶组成，从底部向上填充砾石至45厘米厚，由沙子填充10厘米，开口位于沙子下方5厘米处，以避免水溢出。在三个桶中种植了所研究物种的幼茎，覆盖率为36茎/ m ²，第四个枪管仍未植入以用作参考对象。每周一次将30 L经过Kouinine净化站（位于El-Oued镇北部）的初级处理的废水供应到每个桶中。流动是通过渗滤穿过基材而发生的。水的停留时间为5天。通过放置在桶底的水龙头回收处理过的水。在这三个经过测试的工厂中，颗粒物和有机物污染的产出非常令人满意，其中悬浮物（SM）的降低率达到96％，化学需氧量（COD）的降低率达到89％，生物氧的降低率达到87％需求（BOD ₅）。消除氮和磷污染导致硝酸盐减少94％，正磷酸盐减少95％。种植床Juncus effusus为消除有机和氮污染提供了最佳的输出。但是，莎草纸莎草的种植床最适合磷污染。此外，夏季消除有机污染物的情况有所减少。各个季节的净化产量始终保持在68％以上。