University of Khartoum

Experimental Model for Hydraulic Evaluation of Drip Emitters Clogging Using Different Water Qualities

Experimental Model for Hydraulic Evaluation of Drip Emitters Clogging Using Different Water Qualities

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Title: Experimental Model for Hydraulic Evaluation of Drip Emitters Clogging Using Different Water Qualities
Author: Damblab, Elham Hassan Mustafa
Abstract: : This study was conducted in the Faculty of Agriculture, University of Khartoum, during the period September 2010 to March 2011. The hydraulic performance of drip emitters was investigated under laboratory conditions using three water qualities (River Nile water, Ground water and Treated wastewater) and three types of emitters (two different pressure compensating emitters and an inline emitter). The performance was evaluated with reference to Christiansen’s uniformity coefficient (Cu%), emission uniformity coefficient (Eu%), percentage of clogging (Pclog%), percentage of discharge reduction (R%) and coefficient of variation of discharge (Cv%). Samples from each water quality were chemically analyzed. The obtained were indicated with reference to FAO water quality standards. The results revealed that the water chemical constituents laid within slight to moderate range according to FAO quality standard except for sodium, which indicated severe level for ground water. The results also showed that the inline type of emitters recorded highly significant (P ≤ 0.05) increase in the reduction of discharge and coefficient of variation of discharge, while ground water showed highest values of Christiansen’s uniformity of coefficient (Cu%) and emission uniformity coefficient (Eu%) with both types of pressure compensating emitters. On the other hand, the River Nile water and the treated waste water revealed significantly high clogging percentage (Pclog%) in comparison with ground water for both pressure compensating emitters, while the inline type of emitters showed lowest values of clogging percentage (Pclog%). The study recommends that water quality and emitter type must be considered as the main factors affecting the performance of drip irrigation systems.
Description: 50 page
URI: http://khartoumspace.uofk.edu/123456789/17164
Date: 2015-11-16


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