[Effect of Recycled Water Irrieation on Heavy Metal Pollution in Irrigation Soil].
Huan Jing Ke Xue
; 37(1): 288-92, 2016 Jan 15.
Article
em Zh
| MEDLINE
| ID: mdl-27078969
ABSTRACT
With acceleration of urbanization, water shortages will become a serious problem. Usage of reclaimed water for flushing and watering of the green areas will be common in the future. To study the heavy metal contamination of soils after green area irrigation using recycled wastewater from special industries, we selected sewage and laboratory wastewater as water source for integrated oxidation ditch treatment, and the effluent was used as irrigation water of the green area. The irrigation units included broad-leaved forest, bush and lawn. Six samples sites were selected, and 0-20 cm soil of them were collected. Analysis of the heavy metals including Cr, Mn, Ni, Cu, Zn, As, Cd and Pb in the soil showed no significant differences with heavy metals concentration in soil irrigated with tap water. The heavy metals in the soil irrigated with recycled water were mainly enriched in the surface layer, among which the contents of Cr, Ni, Cu, Zn and Pb were below the soil background values of Beijing. A slight pollution of As and Cd was found in the soil irrigated by recycled water, which needs to be noticed.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Poluentes do Solo
/
Água
/
Metais Pesados
/
Irrigação Agrícola
/
Reciclagem
País/Região como assunto:
Asia
Idioma:
Zh
Ano de publicação:
2016
Tipo de documento:
Article