Journal Article

A novel horizontal subsurface flow constructed wetland planted with Typha angustifolia for treatment of polluted water

Aboagye, Dominic, Gaballah, Mohamed S., Barakat, Khouloud M., Abdelwahab, Ola

2020

Overview

Rapid population growth and urbanization has put a lot of stress on existing water bodies in most developing countries such as the Marriott Lake of Egypt. Three constructed wetland configurations including Typha angustifolia planted with enhanced atmospheric aeration by using perforated pipes networks (CWA), planted without perforated pipe network (CWR), and a control non-planted and without perforated pipes wetland (Control) were used in the study. Changes in physicochemical properties and microbial community over four seasons and hydraulic loading rate (HLR) (50, 100, 200, 300, and 400 L day −1  m −1 ) were monitored using influent from Marriott Lake in Egypt. Overall, the removal performance followed the sequence CWA>CWR>control . Turbidity removal of 98.4%; biochemical oxygen demand (BOD 5 ) removal of 83.3%; chemical oxygen demand (COD) removal of 95.8%; NH 3 -N removal of 99.9%; total nitrogen (TN) removal of 94.7%; NO 3 − -N and NO 2 − -N increased; total P (TP) removal of 99.7%, Vibrio sp. of 100%, Escherichia coli 100%; total bacterial count of 92.3%; and anaerobic bacteria reduction of 97.5% were achieved by using CWA. Seasonal variation and variation in HLRs had significant effect on performance. The modified planted CWA system enhances the removal of pollutants and could present a novel route for reducing the cost associated with integrating artificial aeration into wetlands.

• Publisher: Springer Berlin Heidelberg,Springer Nature B.V
• Subject: Aeration / Ammonia / Anaerobic bacteria / Aquatic Pollution / Artificial aeration / Artificial wetlands / Atmospheric Protection/Air Quality Control/Air Pollution / Biochemical oxygen demand / Biological Oxygen Demand Analysis / Chemical oxygen demand / constructed wetlands / Construction planning / Developing countries / E coli / Earth and Environmental Science / Ecotoxicology / Egypt / Environment / Environmental Chemistry / Environmental Health / Environmental science / Escherichia coli / Hydraulic loading / Lakes / LDCs / Load distribution / Loading rate / microbial communities / Microorganisms / Nitrogen / Nitrogen dioxide / Physicochemical properties / Pipes / plate count / Pollutant removal / Pollutants / Population growth / Research Article / seasonal variation / Seasonal variations / subsurface flow / total nitrogen / Turbidity / Typha angustifolia / Typhaceae / Urbanization / Vibrio / Waste Disposal, Fluid / Waste Water Technology / Wastewater treatment / Water Management / Water pollution / Water Pollution - analysis / Water Pollution Control / Water Purification / Waterborne diseases / Wetlands