Effect of treated wastewater irrigation on ornamental plants: Case study of Lantana and Hibiscus, Morocco

• Published in: World water policy 2024-02, Vol.10 (1), p.280-296
• Main Authors: El Khoumsi, Wafae, Essiba, Wiam, Basir, Ikram, Harrouni, Chérif, Redouane, Choukr‐Allah, Bourziza, Rqia
• Format: Article
• Language: English
• Subjects: agronomic performance; Aguas residuales tratadas; drip irrigation; esthetical parameters; Hibiscus; hydraulic performance; Lantana; parámetros estéticos; Región de Souss‐Massa; Rendimiento agronómico; Rendimiento hidráulico; Riego por goteo; Riego por goteo subterráneo; Souss‐Massa region; subsurface drip irrigation; treated wastewater; 农艺性能; 地下滴灌; 处理后的废水; 朱槿; 水力性能; 滴灌; 美学参数; 苏斯‐马萨地区; 马缨丹
• ISSN: 2639-541X; 2639-541X
• DOI: 10.1002/wwp2.12164

In water stressed countries such as Morocco, the use of treated wastewater represents a strategic perspective for sustainable agricultural development. However, technological and management innovations are needed to make it feasible and effective. The main objective of this work is to evaluate the effect of irrigation with treated wastewater compared with fresh water on the growth of two ornamental plants: Rosa Sinensis hibiscus and Lantana Camara. The study also aimed to examine the impact of treated wastewater on the hydraulic performance of different irrigation systems. To carry out this study, irrigation was applied by two irrigation systems: subsurface drip irrigation and surface drip irrigation. Also, two sources of water were compared: treated wastewater from the WWTP of M'zar (tertiary treatment) and well water, each for a duration of 2 months. The results obtained showed that the treated wastewater generally promoted a better development of agronomic parameters such as height, number of branches, leaves, and flowers for both plants. The same observation was also made regarding the esthetical parameter. For the irrigation system effect, the results obtained showed a better development under the subsurface drip irrigation system; thus, the combination of treated wastewater and subsurface drip irrigation provided the best results for both plants. Regarding the hydraulic performance of the irrigation system, no risk of clogging of the distributors was observed in relation to the water quality; the uniformity coefficient and distribution uniformity remained above 90%. It can therefore be deduced that the use of treated wastewater for irrigation of green spaces should be at the heart of water resource mobilization policies. in fact, it represents an excellent alternative for promoting national water management strategies. 摘要 在摩洛哥等缺水国家, “使用处理后的废水”代表了可持续农业发展的一个战略视角。然而, 为了使其可行、有效, 还需要技术创新和管理创新。本研究旨在评价经过处理的废水灌溉(与淡水相比)对两种观赏植物生长的影响, 这两种植物分别为朱槿和马缨丹。本研究还旨在分析处理后的废水对不同灌溉系统的水力性能的影响。为了开展这项研究, 灌溉采用了两种灌溉系统:地下滴灌和地表滴灌。此外, 还对两种水源进行了比较:M'zar污水处理厂处理过的废水(三级处理)和井水, 每种水源的灌溉时间均为2个月。结果表明, 处理后的废水总体上提升了两种植物的农艺参数, 例如高度、枝、叶和花的数量。对于美学参数也进行了相同的观察。对于灌溉系统的效果, 结果显示, 地下滴灌系统的效果更好；因此, 经过处理的废水和地下滴灌的结合为两种植物提供了最佳效果。至于灌溉系统的水力性能, 没有观察到与水质相关的分配器堵塞的风险；均匀系数和分布均匀度保持在90%以上。因此可以推断, 使用处理后的废水进行绿地灌溉应成为水资源动员政策的核心。事实上, 它代表了一项用于促进国家水管理战略的绝佳替代方案。 Resumen En países con escasez de agua como Marruecos, el uso de aguas residuales tratadas representa una perspectiva estratégica para el desarrollo agrícola soste