The Clogging Capacity of Reclaimed Wastewater: A New Quality Criterion for Drip Irrigation

1991 ◽  
Vol 24 (9) ◽  
pp. 123-131 ◽  
Author(s):  
B. Teltsch ◽  
M. Juanico ◽  
Y. Azov ◽  
I. Ben Harim ◽  
G. Shelef
Keyword(s):  
Water Quality ◽  
Water Potential ◽  
Irrigation Water ◽  
Drip Irrigation ◽  
Quality Criterion ◽  
Additional Parameter ◽  
Reclaimed Wastewater ◽  
Irrigation Systems ◽  
Particle Content ◽  
Water Quality Criterion

The paper proposes a new water quality criterion for the evaluation of the water potential to clog screen filters which protect drip irrigation systems. This additional parameter is required by the increasing use of reclaimed wastewater for drip irrigation. A filtrability test which simulates actual clogging processes is used to analyze reservoirs receiving different portions of reclaimed wastewater (0 to 100 %) and the use of fish to reduce the particle content of water. The study demonstrates the suitability of the filtrability test to measure and analyze the clogging capacity of irrigation water, and the possibility to reduce clogging problems by proper reservoir management.

Should there be an Aquatic Life Water Quality Criterion for Conductivity?

2011 ◽  
Vol 2011 (2) ◽  
pp. 554-565
Author(s):  
S.P. Canton ◽  
R.W. Gensemer ◽  
G.D. DeJong ◽  
C.F. Wolf ◽  
S.M. Pargee ◽  
...  
Keyword(s):  
Water Quality ◽  
Quality Criterion ◽  
Water Quality Criterion ◽  
Aquatic Life

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.

Site-specific marine water-quality criterion for cyanide

2000 ◽  
Vol 19 (9) ◽  
pp. 2323-2327 ◽  
Author(s):  
Kevin V. Brix ◽  
Rick D. Cardwell ◽  
Douglas G. Henderson ◽  
Arnold R. Marsden
Keyword(s):  
Water Quality ◽  
Quality Criterion ◽  
Marine Water ◽  
Water Quality Criterion ◽  
Site Specific

scholarly journals DESENVOLVIMENTO DE OBSTRUÇÕES EM GOTEJADORES E EFICIÊNCIA DO CONTROLE USANDO DOIS TIPOS DE ÁCIDOS

Irriga ◽  
2007 ◽  
Vol 12 (2) ◽  
pp. 185-191
Author(s):  
Manoel Januário da Silva Júnior ◽  
José Francismar de Medeiros
Keyword(s):  
Water Quality ◽  
Hydrochloric Acid ◽  
Irrigation Water ◽  
Drip Irrigation ◽  
Variation Coefficient ◽  
Irrigation Water Quality ◽  
Randomized Design ◽  
Before And After ◽  
Completely Randomized Design ◽  
And Control

desenvolvimento de obstruçõesEM GOTEJADORES e eficiÊnciado controle usando dois tipos de ácidos  Manoel Januário da Silva Júnior1; José Francismar de Medeiros21Departamento de Engenharia Rural, Escola Superior de Agricultura "Luiz de Queiroz", Universidade de São Paulo, Piracicaba, SP,  [email protected] de Ciências Ambientais, Universidade Federal Rural Do Semi-Árido,  Mossoró, RN  1 RESUMO Em irrigação localizada a qualidade da água é fundamental para o desempenho dos emissores. Uma conseqüência é a obstrução que reduz a uniformidade de emissão. Assim, os objetivos deste trabalho foram estudar o efeito da qualidade da água sobre o desenvolvimento de obstruções, bem como testar a eficiência de dois tipos de ácidos no controle dessas obstruções. O experimento foi instalado no delineamento inteiramente aleatorizado, no esquema fatorial 4x2 com duas repetições. Os tratamentos foram quatro tipos de água e dois ácidos (nítrico e clorídrico). Foi feita uma avaliação do sistema antes e outra após a acidificação. Para cada tratamento foram calculados a vazão, o coeficiente de variação de fabricação e a uniformidade de emissão. A qualidade da água de irrigação não influenciou a vazão, o coeficiente de variação de fabricação e a uniformidade de emissão. O uso de ácido nítrico e clorídrico foi eficiente no controle de obstruções. O uso do ácido clorídrico fica limitado a águas com menores teores de bicarbonatos. UNITERMOS: Gotejamento, qualidade de água, uniformidade de emissão, acidificação  SILVA JÚNIOR, M. J. da; MEDEIROS, J. F. de. DEVELOPMENT OF DRIPPER CLOGGING AND CONTROL EFFICIENCY USING TWO TYPES OF ACIDS  2 ABSTRACT In drip irrigation water quality is fundamental for emitter performance. Clogging is a consequence that reduces emission uniformity. Thus, this paper aimed to study water quality effect on the development of clogging and efficiency of acid types in clogging control. The experiment was installed in a completely randomized design with a 4x2 factorial scheme and two replications. The treatments were four types of water and two acids (nitric and hydrochloric). System evaluations were made before and after the acidification. For each treatment the following were calculated:  flow, manufacturer’s variation coefficient and emission uniformity. Water quality did not affect flow, manufacturer’s variation coefficient and emission uniformity. The use of nitric and hydrochloric acids was efficiency on clogging control. The use of hydrochloric acid is limited to waters with low bicarbonate levels. KEYWORDS: Drip irrigation, water quality, emission uniformity, acidification

scholarly journals Potato Growth Uniformity as Affected by Subsurface Drip and Seepage Irrigation

HortScience ◽  
1997 ◽  
Vol 32 (3) ◽  
pp. 529C-529
Author(s):  
S.J. Locascio ◽  
A.G. Smajstsrla ◽  
D.H. Hensel ◽  
D.P. Weigartner
Keyword(s):  
Plant Growth ◽  
Irrigation Water ◽  
Drip Irrigation ◽  
Tuber Yield ◽  
Potato Production ◽  
Field Studies ◽  
Irrigation Systems ◽  
Seepage Irrigation ◽  
Subsurface Drip ◽  
Potato Growth

Growth and production uniformity of potato (Solanum tuberosum L.) as influenced by conventional seepage irrigation and by subsurface drip irrigation was evaluated in field studies during two seasons in plots 16 rows (18.3 m) wide and 183 m long. Seepage irrigation water was supplied through ditches located on each side of each plot. Drip irrigation water was distributed through buried tubes placed under the beds 6.1 m apart extending the length of the rows. Water application throughout the plots was accomplished more rapidly with the subsurface drip system and water use during the two seasons was 33% less than with the conventional seepage system. Tuber yield during the first season was similar with the two irrigation systems. During the second season, plant growth, tuber development, and tuber yield were sampled on alternate rows beginning on each outside bed, at each end of each plot, and in the middle of the plots. Irrigation method and bed location among the 16 beds had little influence of potato growth and development. With water flow from north to south, plant growth, and tuber yield were significantly higher from potatoes growing at the north end, lowest in the plot center, and intermediate from potatoes growing at the south end. These data indicate that potato production with the two irrigation systems was similar.

scholarly journals Reclaimed Wastewater Quality Assessment for Irrigation and Its Mid-Time Reuse Effects on Paddy Growth and Yield under Farmer Management

2018 ◽  
Vol 12 (1) ◽  
pp. 64-73
Author(s):  
Kami Kaboosi ◽  
Reza Esmailnezhad
Keyword(s):  
Heavy Metals ◽  
Water Quality ◽  
Irrigation Water ◽  
Nitrogen Concentration ◽  
International Standards ◽  
Growth And Yield ◽  
Irrigation Water Quality ◽  
Reclaimed Wastewater ◽  
Fertilizer Application Rate ◽  
Significant Difference

Introduction: Many studies have been conducted on irrigation of upland crops with reclaimed wastewater while there have been a few reports about wastewater reuse for paddies. The majority of irrigation water requirement of paddy field in Bandargaz region (Iran) during the dry season within the last 12 years is dependent on effluent of treatment plant. Accordingly, different water parameters and 12 irrigation water quality indexes and economical- environmental filed management factor (fertilizer application rate) and crop growth and yield were studied in freshwater (FW) and wastewater (WW) filelds. Explanation: Unexpectedly, wastewater and freshwater salinity was less and more than the threshold salinity of paddy (2.0 dS.m-1), respectively and due to the high concentration of chlorine, FW is not suitable for irrigation. Based on almost all of indices and standards for assessing irrigation water quality, WW was significantly better than FW. Conclusion: The average concentration of heavy metals in both FW and WW samples were in the order of Cr˂Cd˂Pb˂Ni. However, results showed that concentration of heavy metals in WW was significantly more than FW. Nevertheless, these were below maximum allowable based on international standards and guidelines. The average nitrogen concentration in the reclaimed wastewater was 11.2 mg.lit-1 that was more than the required nitrogen concentration (7 mg.lit-1). So, a dilution strategy could be adopted when reclaimed water is used. No significant difference was observed in two type farms based on plant height, spike length, and 1000-seed weight, but this factor was significantly effective on seed per spike and seed yield so that they were higher in WW irrigated farms by 12.4 and 10 percent, respectively.

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