Review.Water resources deficit and water engineering

Tarjuelo, J.M.; Jiang, Dejuan; Moreno, M.; Álvarez, José Fernando Ortega

doi:10.5424/sjar/201008s2-1354

Cited by 19 publications

(6 citation statements)

References 49 publications

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“…In countries with an arid and semi-arid climate, groundwater is widely used for irrigation. Groundwater sources represent 45% of cultivated land in the United States, 58% in Iran and 67% in Algeria [9]. This fact frequently leads to the overexploitation of resources.…”

Section: Introductionmentioning

confidence: 99%

AS-Solar, a Tool for Predictive Maintenance of Solar Groundwater Pumping Systems

2021

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Energy for water abstraction limits the viability of some irrigable areas. Increasing efficiency and introducing renewable energy can reduce energy cost. Solar pumping is a widely recognized renewable energy solution. These pumping systems suffer special wear out due to sudden changes and for having working conditions far from the nominal points. Thus, monitoring systems are becoming more frequent for maintenance issues. A new decision support system, named AS-Solar, was developed to perform predictive maintenance. This model permits detecting if the source of the anomaly in the pump performance is the pump, the electrical components (motor, variable frequency drive (VFD) or cables) or the pumping pipe. It demands real-time data from the monitoring system and an accurate simulation model, together with an optimization process that helps in the decision making in predictive maintenance. To validate the developed model, it was applied to a complex case study of a solar pumping system of 40 kWp that abstracts groundwater from nearly 200 m deep. This pumping system has a VFD, two lines of cables up to the pump and aggressive water with slimes, which causes different problems in the pumping system. In this case study, the AS-Solar model shows an acceptable accuracy, with a relative error (RE) of the 2.9% in simulated power and 7.9% in simulated discharge.

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Section: Introductionmentioning

confidence: 99%

AS-Solar, a Tool for Predictive Maintenance of Solar Groundwater Pumping Systems

2021

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“…Irrigation is the prime instrument used to intensify crop production in the areas lacking natural moistening. The deficiency and low quality of irrigation water requires solution to a number of auxiliary issues, and among other things, the use of irrigation water from different sources: reusing drainage and escape water from rice irrigation systems; municipal drains along with industrial effluents -to enhance the efficient utilization of aquatic resources and reduce the environmental impact (Cui et al, 1998;Li, 2001; Oron et al, 1999;Lu, 2000;Tarjuelo et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Agro-Environmental Evaluation of Irrigation Water from Different Sources, Together with Drainage and Escape Water of Rice Irrigation Systems, According to its Impact on Maize

Lykhovyd¹,

Lavrenko²,

Lavrenko³

et al. 2019

J. Ecol. Eng.

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The water supply deficit requires agro-environmental rationale for the use of alternative water sources to feed agricultural crops, viz.: industrial wastes, municipal drains, farm animal waste, drainage and escape water of rice irrigation systems. We analyzed the quality of irrigation water from different sources, with regard to the content of cations, anions, water-soluble salts, power of hydrogen (рН), sodium adsorption ratio (SAR), etc. in it. In the course of the greenhouse trial, we diagnosed its impact on the indicator crop (maize) (Zea mays L.) with its herbage crop stage of 10 leaves, supplied with water of varying quality. We proved the viability of improved drainage and escape water from rice irrigation systems in irrigated agriculture, owing to which maize herbage was diminished, on average, by 5.82%. We verified the negative impact of irrigation water, which contains the effluent disposals of metallurgical production, on croppers-it had contributed to diminishing the watered maize herb, on average, by 39.27%. A correlation analysis of the test data proved the closely interrelated feedback between the maize herbage amount and the content of cations, anions and water-soluble salts in irrigation water (coefficient of correlation r varied between 0.88 and 0.98). The worked-out linear regressive model for maize herbage, based on the content of water-soluble salts in irrigation water, together with SAR index (Y=2342.71-1.82×x 1 +366.78×x 2), affirmed the validity of the pattern, discovered by means of the correlation analysis.

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“…Water is usually considered to be a renewable natural resource. But its improper distribution among the world and increasing demands can make a drastic effect on its availability and lead to significant freshwater scarcity in the nearest future [TARJUELO et al 2010]. Recently conducted scientific studies have predicted increase in freshwater demands up to 80% by 2050 [FLÖRKE et al 2018].…”

Section: Introductionmentioning

confidence: 99%

Assessment of the CROPWAT 8.0 software reliability for evapotranspiration and crop water requirements calculations

Вожегова

Lavrynenko

Коковіхін

et al. 2018

Journal of Water and Land Development

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The results of the study devoted to assessment of accuracy and reliability of the CROPWAT 8.0 software application calculations of the evapotranspiration and crop water requirements are represented in the article.The study was based on the results of the perennial field experiments, conducted during the period from 2012 to 2017 at the irrigated lands of the South of Ukraine with different crops, namely: sweet corn, grain corn, soybean, sorghum. We assessed accuracy of the CROPWAT 8.0 software application by the comparison of the calculated values with the real ones. We determined considerable differences between the calculated crops evapotranspiration values and crops irrigation requirements and the real ones obtained in the field experiments. The difference was the most essential in case of the drip-irrigated sweet corn crop and averaged to 46.05% for evapotranspiration and 89.20% for irrigation water requirements, correspondingly. Overhead sprinkler irrigated crops are likely to be more suitable for accurate evapotranspiration prediction by using the CROPWAT 8.0. The slightest discrepancy between the calculated and actual values of the studied parameters were determined on the overhead sprinkler irrigated grain corn crops, where the differences averaged just to 15.86% for evapotranspiration and 41.63% for irrigation norm. The results of the study gave us an opportunity to conclude that CROPWAT 8.0 software application should not be used without previous calibration and adjustment of the crop coefficients for the concrete agricultural production conditions.

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Review.Water resources deficit and water engineering

Cited by 19 publications

References 49 publications

AS-Solar, a Tool for Predictive Maintenance of Solar Groundwater Pumping Systems

AS-Solar, a Tool for Predictive Maintenance of Solar Groundwater Pumping Systems

Agro-Environmental Evaluation of Irrigation Water from Different Sources, Together with Drainage and Escape Water of Rice Irrigation Systems, According to its Impact on Maize

Assessment of the CROPWAT 8.0 software reliability for evapotranspiration and crop water requirements calculations

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