Please use this identifier to cite or link to this item: http://krishikosh.egranth.ac.in/handle/1/5810102884
Authors: VISHAL KESHAVRAO CHAVAN
Advisor: DR. P. BALAKRISHNAN
Title: EVALUATION OF CLOGGING MECHANISM IN DRIP IRRIGATION SYSTEM
Language: en
Type: Thesis
Agrotags: null
Abstract: EVALUATION OF CLOGGING MECHANISM IN DRIP IRRIGATION SYSTEM VISHAL KESHAVRAO CHAVAN 2012 P. BALAKRISHNAN (MAJOR ADVISOR) ABSTRACT The suitability of any irrigation system mainly depends upon its design, layout and performance. Due to its merits and positive effects, drip irrigation has become rapidly popular in India Despite its advantages, in drip irrigation system, emitter clogging is one of the major problems which can cause large economic losses to the farmers. Hence a laboratory study was conducted at Research and Development (chemical laboratory) of product development in M/s Jain Irrigation System, plastic park, Jalgaon Maharashtra during 2010-’11 to evaluate the clogging mechanism using clogging test method and adsorption mechanism. As per the clogging test protocol (ISO/TC 23/SC 18/WG5 N4) the clogging test was conduct for two different types of emitter type A (2 Lph) and B (4 Lph). There were four phases with each phase consisting of different clay quantities of different size fractions of the soil. The discharge reductions compared to before clogging test discharge readings in Phases 1 to 4 were 3.00-4.00, 14.50-20.00, 56.00-59.50 and 80.50-82.00 per cent in case of A type emitters and 3.08-4.36, 7.44-10.00, 41.79-44.62 and 56.67-60.76 per cent in B type emitters respectively. In Phase 3 three emitters (30%) each of both A and B types and in Phase 4, six emitters of type A (60%) against four emitters of type B (40%) were clogged. Thus, emitter type A was more susceptible for clogging compared to type B and therefore, the emitter type B was superior. The mean discharge before the acid treatment was 0.36 Lph for emitters type B and 1.53 Lph for emitters type A, which increased to 1.90 Lph (5.28 times improvement) and 3.90 Lph (2.55 times improvement) after the acid treatment respectively. The result indicated that the per cent of clogging were maximum for LLDPE indicating 6.94 to 11.1 per cent from day 1 to day 15 compared to other grinded materials. The minimum per cent clogging was recorded as 1.12 to 3.03 per cent for PVC. This is the first study of adsorption that demonstrated that LLDPE is more susceptible for clogging in drip irrigation system. Keywords: Drip irrigation, Clogging, Emitter type A (2 Lph), Emitter type B (4 Lph) Adsorption, Langmuir and Freundlich, Polymers.
Description: EVALUATION OF CLOGGING MECHANISM IN DRIP IRRIGATION SYSTEM
Subject: Soil and Water Engineering
Theme: EVALUATION OF CLOGGING MECHANISM IN DRIP IRRIGATION SYSTEM
These Type: M.Tech.
Issue Date: 2012-12-10
Appears in Collections:Thesis

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