Water Quality and Distribution Uniformity in Drip/Trickle Irrigation Systems

1998 ◽  
Vol 70 (4) ◽  
pp. 355-365 ◽  
Author(s):  
Antonina Capra ◽  
Baldassare Scicolone
Keyword(s):  
Water Quality ◽  
Trickle Irrigation ◽  
Irrigation Systems ◽  
Distribution Uniformity

scholarly journals Chemical treatment to unclogg dripper irrigation systems due to biological problems

2008 ◽  
Vol 65 (1) ◽  
pp. 1-9 ◽  
Author(s):  
Túlio Assunção Pires Ribeiro ◽  
José Euclides Stipp Paterniani ◽  
Christiane Coletti
Keyword(s):  
Chemical Treatment ◽  
Water Distribution ◽  
Irrigation System ◽  
Trickle Irrigation ◽  
Irrigation Systems ◽  
Before And After ◽  
Excellent Method ◽  
Distribution Uniformity ◽  
Two Sectors ◽  
Frequent Problem

Many producers use drippers for trickle irrigation systems for flower production in the field and in protected environments. A frequent problem in this type of irrigation system is the clogging of drippers, which is directly related to water quality and filtering system efficiency. The objective of this study was to conduct an experimental investigation to evaluate the efficiency of using nitric acid and sodium hypochlorite to unclogg drippers due to the use of water with high algae content. The evaluation was conducted in six, 4216 m² greenhouses, each with two sectors comprised of ten spaces or lines, totaling 12 sectors of a dripper irrigation system in a rose producing property of Holambra, State of SP, Brazil. Chemical and physical analyses and the bacteriological count in water were carried out in the three water sources that supply the irrigation system to check the factors causing the clogging. Evaluations were carried out on water distribution uniformity in all sectors before and after chemical treatment in order to evaluate efficiency. The treatment improved water distribution uniformity and a lead to a reduction in the coefficient of variation (CV) for dripper flow in all sectors. There was a good correlation between CV and the water distribution uniformity index. Therefore, this is an excellent method to be used to unclogg drippers due to biological problems.

scholarly journals PORTABLE SAND FILTER FOR SMALL DRIP IRRIGATION SYSTEMS

Irriga ◽  
2018 ◽  
Vol 21 (1) ◽  
pp. 90
Author(s):  
Cleomar Ferreira de Oliveira ◽  
Marconi Batista Teixeira ◽  
Adriana Ramos ◽  
Renato Moreira da Silva ◽  
Pedro Henrique Pinto Ribeiro ◽  
...  
Keyword(s):  
Water Quality ◽  
Flow Rate ◽  
Drip Irrigation ◽  
Low Cost ◽  
Maximum Flow ◽  
Head Loss ◽  
Effective Control ◽  
Trickle Irrigation ◽  
Irrigation Systems ◽  
Sand Filter

PORTABLE SAND FILTER FOR SMALL DRIP IRRIGATION SYSTEMS  CLEOMAR FERREIRA DE OLIVEIRA1; MARCONI BATISTA TEIXEIRA2*; ADRIANA RAMOS3; RENATO MOREIRA DA SILVA4; PEDRO HENRIQUE PINTO RIBEIRO5 E JOSÉ ANTÔNIO FRIZZONE6 1 Engenheiro Agrônomo, Prof. Dr. IFMinas Gerais - Campus Muzambinho, MG.2 Engenheiro Agrônomo, Prof. Dr. IFGoiano - Campus Rio Verde, GO. *E-mail: [email protected] Engenheira Agrônoma, Profa. Dra. Universidade Estadual de Santa Cruz – Ilhéus, BA.4 Engenheiro Agrônomo, Doutor, Departamento de Engenharia de Biossistemas, LEB - ESALQ/USP, Piracicaba - SP.5 Tecnólogo em Irrigação e Drenagem, Doutorando, Departamento de Engenharia Rural, UNESP/FCA, Botucatu, SP.6 Engenheiro Agrônomo, Prof. Titular, Departamento de Engenharia de Biossistemas, LEB - ESALQ/USP, Piracicaba - SP.  1 ABSTRACT Filters in drip irrigation systems are fundamental to ensure effective control of water quality and to reduce clogging of emitters. Current study aims at constructing a low cost portable sand filter for small localized irrigation systems (up to 1.0 ha) and at determining its head loss due to flow. Tests were carried out in the Hydraulic Laboratory of Biosystems Engineering Department of Agriculture School “Luiz de Queiroz”, University of São Paulo. Magnetic-induction Conaut Krohne model IFS 4000 w/6 with IFC 090 D signal convert of discharge, reading range between 0 and 90 m3.h-1 and 99% precision, was used for flow rate measurements. Pressure loss at each observation point was determined indirectly by two differential pressure gauges with a mercury column. A set of 20 flow readings was performed in three replications. Results showed that maximum filter discharge complied with ASAE guidelines and the cost of materials for manufacture of the filter was U$ 382.15. Linear mathematical model adequately describes the loss of pressure of the sand filter due to flow variation. Rates of minimum and maximum flow recommended range between 0.0257 m3.h-1 and 0.556 m3.h-1, and thus may satisfy small trickle irrigation projects. Keywords: Filtration, water quality, head loss, flow rate.

The Accuracy of Distribution Uniformity Test under Different Moving Irrigation Systems

2018 ◽  
Author(s):  
Abdelmoneim Zakaria Mohamed ◽  
Troy Robert Peters ◽  
Abid Sarwar ◽  
Don McMoran
Keyword(s):  
Irrigation Systems ◽  
Uniformity Test ◽  
Distribution Uniformity

scholarly journals Modification of water application uniformity among closed circuit trickle irrigation systems

2010 ◽  
Vol 01 (01) ◽  
pp. 1-9 ◽  
Author(s):  
Hani A.-G. Mansour ◽  
Mohamed Yousif Tayel ◽  
Mohamed A. Abd El-Hady ◽  
David A. Lightfoot ◽  
Abdel-Ghany Mohamed El-Gindy
Keyword(s):  
Closed Circuit ◽  
Water Application ◽  
Trickle Irrigation ◽  
Irrigation Systems

Problems Associated with Particulate Matter in Water Reuse for Agricultural Irrigation and Their Prevention

1986 ◽  
Vol 18 (9) ◽  
pp. 185-195 ◽  
Author(s):  
A. Adin
Keyword(s):  
Water Quality ◽  
Drip Irrigation ◽  
Distribution System ◽  
Water Reuse ◽  
Sprinkler Irrigation ◽  
Water Quality Monitoring ◽  
Chemical Precipitation ◽  
Surface Irrigation ◽  
Irrigation Systems

Methods of irrigation are reviewed, including surface irrigation, sprinkler irrigation and drip irrigation, and the problems of these systems with regard to the quality of the water used are described. Surface irrigation does not suffer much from water quality problems, but both sprinkler irrigation and drip irrigation systems are more affected, the main problem being clogging of pumps, pipes and orifices. Clogging is usually due to a combination of suspended matter, chemical precipitation and biological growth. Current solutions through water treatment, and associated problems with this, are described, with examples given of typical strainers and filters. The key to the solution of clogging problems is a proper match between water quality of the source and within the distribution system, and the type ot treatment to be used, therefore, proper water quality monitoring is recommended. Direct granular filtration is the most preferaDle treatment process for drip irrigation systems.

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