Contaminations of soil and two Capsicum annuum generations irrigated by reused urban wastewater treated by different reed beds

Almuktar, SAAAN, Abed, SN and Scholz, M ORCID: https://orcid.org/0000-0001-8919-3838 2018, 'Contaminations of soil and two Capsicum annuum generations irrigated by reused urban wastewater treated by different reed beds' , International Journal of Environmental Research and Public Health, 15 (8) , #1776.

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Abstract

Background: In order to save potable water, this study aims to evaluate the contamination of soil and Capsicum annuum L. (chilli) watered with urban wastewater (sewage) pre-treated by various wetland systems.
Methods: The appropriateness of wetland outflow for irrigation when applying reused wastewater with high contamination of minerals and pathogens was assessed. The impact of wastewaters pre-treated by various wetlands on soil and harvest was tested in terms of mineral and biological contamination risk.
Results: The wetlands met the standards for irrigation water for most water quality variables. However, the thresholds for key water quality parameters were significantly (p < 0.05) exceeded. The highest values for total coliforms, ammonium-nitrogen, phosphorus and potassium were 157,072 CFU/100 mL, 8.5 mg/L, 5.0 mg/L, and 7.0 mg/L, respectively. The harvest was moderately polluted only by zinc according to vegetable quality standards (threshold of 50 mg/kg). Zinc concentrations for Filters 2, 4, 6, 7 and 8 were 35.8, 60.6, 65.1, 65.5 and 53.2 mg/kg, respectively. No bacterial contamination was detected.
Conclusions: Treatment of domestic wastewater applying constructed wetlands and subsequent recycling of the treated wastewater for irrigation of crops is a good substitute to the traditional application of drinking water for irrigation purposes.

Item Type:	Article
Schools:	Schools > School of Computing, Science and Engineering
Journal or Publication Title:	International Journal of Environmental Research and Public Health
Publisher:	MDPI
ISSN:	1660-4601
Related URLs:	Publisher
Funders:	Government of Iraq
SWORD Depositor:	Publications Router
Depositing User:	Publications Router
Date Deposited:	06 Sep 2018 08:11
Last Modified:	07 Jun 2019 14:45
URI:	http://usir.salford.ac.uk/id/eprint/48251

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