垂直流人工湿地中两种大型植物处理生活污水的效果评价

IF 0.5 4区 化学 Q4 CHEMISTRY, ANALYTICAL
Khemissi Yahiaoui, Toufik Masmoudi, Mansoura Benakcha
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引用次数: 0

摘要

人工湿地是一种工程系统,旨在利用新兴的大型植物、土壤和微生物种群的自然功能,从原始废水中去除多种污染物,通过改善废水质量来减少环境恶化,增加水的可用性。为了在阿尔及利亚,特别是在气候干旱的撒哈拉地区实际开发人工湿地,对当地可用的大型植物物种(芦苇和金合欢)进行了试验。为评价该干旱区各大植物特别是金合欢与对照相比的处理效果,试验为期3个月(2月、3月和4月),未处理水每月初测量一次,处理水每10天测量一次。因此,本文的主要目的是评价两种水生植物芦苇和金合欢在干旱气候条件下去除生活污水污染物的性能。研究发现,这两种水生植物对废水的处理效果非常显著。总体结果表明,处理前后记录的pH值均低于阿尔及利亚排放标准和世界卫生组织(WHO)标准的限值(8.5)。处理后的水所记录的电导率(EC)值大大超过处理前的值。与金合欢过滤器(1.97 mg/L)相比,芦苇生长床的氧浓度最高(4.29 mg/L),甚至高于原始废水(1.28 mg/L)。所得结果还表明芦苇对生物需氧量(BOD5)的去除率最高(97%). Additionally, it showed superior removal efficiency for total nitrogen (TN) (89%) and total phosphorus (TP) (99.65%) in domestic wastewater samples, compared to the Acacia plant, which exhibited removal rates of 95.26, 96.79, 87.7, and 99.38% for the same parameters, respectively. The unplanted bed (no plants), on the other hand, showed lower removal efficiencies of 91.58, 95.46, 72.60, and 95.50% for the same parameters, respectively. The higher performance in removing TN after wastewater treatment may be due to the absorption of nitrates (\({\text{NO}}_{3}^{ - }\)) and ammonium (\({\text{NH}}_{4}^{ + }\)) by macrophyte plants for the growth of their tissues. On the other hand, total suspended solids (TSS) removal, the Acacia filter showed the greater removal percentage compared to that found via the Phragmite australis bed and unplanted filter respectively.
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Efficacy Evaluation of Two Plant Macrophytes in a Vertical Flow Constructed Wetland for Domestic Wastewater Treatment

Efficacy Evaluation of Two Plant Macrophytes in a Vertical Flow Constructed Wetland for Domestic Wastewater Treatment

Constructed wetlands are engineered systems, constructed and designed to employ the natural functions of emerging macrophytes, soils, and microbial populations to remove multiple contaminants from raw wastewater to reduce environmental deterioration and increase water availability by improving the wastewater quality. To practically develop artificial wetlands in Algeria and especially in the Saharan zone with an arid climate, locally available macrophyte species (Phragmites australis and Acacia) were tested. To evaluate the treatment efficiency of each macrophyte and especially Acacia in this arid region compared to the control, the experiments were carried out for 3 months (February, March, and April) with measurements taken at the beginning of each month for untreated water and every 10 days for treated water. Therefore, the main objective of this review article is to judge the performance of two aquatic plants (Phragmites australis and Acacia) regarding the domestic wastewater pollutants removal under arid climate conditions. It was found in the work that the wastewater treatment efficacy of the two aquatic macrophytes was very remarkable. The overall results show that the pH values recorded before and after treatment are lower than the limit values of Algerian discharge standards and the World Health Organization (WHO) standards (8.5). The electrical conductivity (EC) values recorded in treated water strongly exceed those before treatment. The bed grown with Phragmite australis achieves the highest oxygen concentration (4.29 mg/L) as compared to the Acacia filter (1.97 mg/L) and even to raw wastewater (1.28 mg/L). Obtained findings also indicated that Phragmites australis donated the upmost achieving the highest removal rate for biological oxygen demand (BOD5) (97%). Additionally, it showed superior removal efficiency for total nitrogen (TN) (89%) and total phosphorus (TP) (99.65%) in domestic wastewater samples, compared to the Acacia plant, which exhibited removal rates of 95.26, 96.79, 87.7, and 99.38% for the same parameters, respectively. The unplanted bed (no plants), on the other hand, showed lower removal efficiencies of 91.58, 95.46, 72.60, and 95.50% for the same parameters, respectively. The higher performance in removing TN after wastewater treatment may be due to the absorption of nitrates (\({\text{NO}}_{3}^{ - }\)) and ammonium (\({\text{NH}}_{4}^{ + }\)) by macrophyte plants for the growth of their tissues. On the other hand, total suspended solids (TSS) removal, the Acacia filter showed the greater removal percentage compared to that found via the Phragmite australis bed and unplanted filter respectively.

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来源期刊
Journal of Water Chemistry and Technology
Journal of Water Chemistry and Technology CHEMISTRY, APPLIED-CHEMISTRY, ANALYTICAL
自引率
0.00%
发文量
51
审稿时长
>12 weeks
期刊介绍: Journal of Water Chemistry and Technology focuses on water and wastewater treatment, water pollution monitoring, water purification, and similar topics. The journal publishes original scientific theoretical and experimental articles in the following sections: new developments in the science of water; theoretical principles of water treatment and technology; physical chemistry of water treatment processes; analytical water chemistry; analysis of natural and waste waters; water treatment technology and demineralization of water; biological methods of water treatment; and also solicited critical reviews summarizing the latest findings. The journal welcomes manuscripts from all countries in the English or Ukrainian language. All manuscripts are peer-reviewed.
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