Department of Civil Engineering, Jamia Millia Islamia, New Delhi, India.
Department of Geography, LADES, FLSH-M, Hassan II University of Casablanca, Mohammedia, Morocco.
J Environ Manage. 2020 Aug 1;267:110627. doi: 10.1016/j.jenvman.2020.110627. Epub 2020 May 6.
Hospital wastewater are a lurking threat to environment and human health security for any given moment of time owing to its complexity and high vulnerability to cause disease outbreak. Though there are a number of treatment process for wastewater., there is a high need for employing cost-efficient and sustainable method of treatment. Hence a pilot scale horizontal surface flow Constructed Wetland (HSFCW) coupled with Tubesettler was installed at New Delhi, India (February to may 2019). This study reports comparative pollutants removal from hospital wastewater using Constructed Wetlands and associated tubesettler dosed with Hospital wastewater. A pilot scale CW system was used for treating 10m/day of hospital wastewater. The system was tested for 3 Months to evaluate its performance for removing pollutants from the wastewater. The HSFCW coupled with tubesettler achieved over all removal efficiency of 94% (COD), MLSS (97%), TSS (98%), BOD (96%), Phosphate (79%). However, process of nitrification was not observed and accumulation of Nitrate up to 197% was observed. The study concluded that it may be due to the presence of pharmaceuticals and other elements present in hospital wastewater. This conclusion was based on the fact that Alkalinity increased by 52% in effluent and pH value also exhibited an average increase of 12%. Further research studies are required to investigate effect of pharmaceutical originating from hospital on treatment efficiency, to incorporate anaerobic setup to complete denitrification-nitrification process and also to determine efficiency of thermophilic, mesophilic, and psychrophilic bacteria with respect to climate and temperature.
由于其复杂性和极易引发疾病爆发，医院废水随时都对环境和人类健康安全构成潜在威胁。尽管有许多废水处理工艺，但仍非常需要采用经济高效且可持续的处理方法。因此，在印度新德里安装了一个带有 Tubessetter 的水平表面流人工湿地（HSFCW）的中试规模装置（2019 年 2 月至 5 月）。本研究报告了使用人工湿地和投加医院废水的相关 Tubessetter 从医院废水中去除污染物的比较。采用中试规模的 CW 系统处理 10m /天的医院废水。该系统经过 3 个月的测试，以评估其从废水中去除污染物的性能。HSFCW 与 Tubessetter 结合的去除效率达到了 94%（COD）、97%（MLSS）、98%（TSS）、96%（BOD）、79%（磷酸盐）。然而，未观察到硝化过程，硝酸盐积累高达 197%。研究得出的结论是，这可能是由于医院废水中存在药物和其他元素。这一结论基于以下事实，即出水中的碱度增加了 52%，pH 值也平均增加了 12%。需要进一步的研究来调查医院废水来源的药物对处理效率的影响，以纳入厌氧装置完成反硝化-硝化过程，并确定在气候和温度方面，嗜热、中温和嗜冷细菌的效率。
