Lysimeter study of Fecal Coliform Transport in Treated Wastewater under Drip Irrigation

Document Type : Research Paper

Authors

1 Former Graduate Student, Faculty of Agriculture, Tarbiat Modares University

2 Associae Professor,Agricultural Engineering and Techology Institute

3 Associate Professor, Faculty of Agriculture, Tarbiat Modares

Abstract

Shortage of fresh water resources is a major worldly concern. Accessibility of water for
irrigation purposes is also one of the most important concerns in arid and semiarid
regions. This is why treated domestic wastewater is thought of as an important water
source. Even following treatment, wastewater may contain a great many kinds of
microorganisms hazardous to humans and environment. Therefore the potential
transmission of pollution is a principle problem associated with the use of treated
wastewater in agriculture. Various irrigation techniques can be employed, associated with
treated wastewater used in agriculture. Accordingly, the present study was conducted on
Fecal Coliform in the wastewater treatment in some laboratory columns of 30 cm
diameter and 60 cm height irrigated, using surface Drip Irrigation (DI) vs Subsurface
Drip Irrigation system (SDI). Samples of the effluent and soil solutions were collected
from each column after each irrigation event. Results revealed that crowds of bacteria
rose in either column. There were no significant differences observed between crowds of
bacteria in the effluents of columns in the two irrigation systems. It was also observed
that contamination in the 15 cm layer, in SDI was lower than that in the DI column.

Keywords

References

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