Justification for use and structural schemes of water intake-purification facilities in drip irrigation systems

Purpose: development of justification for the feasibility and possibility of application and structure schemes of filtering water intakes for water intake from canals, its preliminary purification and supply to drip irrigation systems. Materials and Methods. During development of justification, general and specific scientific methods of analysis and synthesis of information on the advantages and disadvantages of filtering water intakes were used, and during the development of their designs, technologies of research design were used. Results and Discussion. It has been found that filtering water intakes can simultaneously perform the functions of water intake, trash barriers, fish protection and purification facilities. Structural flexibility and simplicity of performance, environmental friendliness, multifunctionality and high technical and economic indicators are the basic characteristics that made it possible to substantiate the feasibility of their application as water intake and treatment facilities for drip irrigation systems. As a result of the research, at the level of inventions, structural schemes of water intake structures with inlets equipped with filter panels with bottom and slope locations were developed. The water intakes provide for the arrangement of catchment and water storage containers, ensuring the water collection seeped through the filter panels and its subsequent drainage into the water conducting stream. The water intake structures provide for the possibility of selective water intake from the least polluted horizons of the water flow. The problematic issues of the use of filtering water intakes are noted in terms of the need to create a developed water intake front and periodic flushing or replacement of filtering panels. Conclusions. The feasibility of using water intake purification facilities, providing water intake from water sources and its preliminary treatment for the needs of drip irrigation systems, has been substantiated, as well as filtering water intakes designs recommended for the arrangement and use in drip irrigation systems are proposed.

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FILTERING INTAKE WITH SCREEN FILTER OF FILTERING PANELS FOR DRIP IRRIGATION SYSTEMS INTAKE

Ecology and water management ◽

10.31774/2658-7890-2021-3-2-87-98 ◽

2021 ◽

Author(s):

V. N. Shkura ◽

◽

A. S. Shtanko ◽

Keyword(s):

Water Intake ◽

Drip Irrigation ◽

Water Surface ◽

Irrigation System ◽

Lower Surface ◽

Water Withdrawal ◽

Preliminary Treatment ◽

Irrigation Systems ◽

Water Jets ◽

Water Cleaning

Purpose: development of the filtering water intake design of water intake purification facilities intended for preliminary treatment and water supply to drip irrigation systems. Materials and Methods. The disadvantage of the known designs of filtering water intake structures is their clogging with suspensions in the water withdrawn from water sources. To eliminate this drawback in the design of water intakes equipped with filtering panels, it is proposed to use a device that protects the filter elements from contamination by covering their surface with a mesh cloth. Results. The proposed device provides for installing and moving screen filter over the surface of the filtering panels, removing it from water, cleaning or replacing it. The removal of the screen filter or perforated fabric from the canal up the slope is carried out by a lifting mechanism with the winding of the fabric onto the drum. Moving the fabric overlapping the filtering panels down the slope is carried out using a ballast rod equipped with a pair of wheels when the screen is released by the winding mechanism. The screen is cleaned from the pollutants accumulated on it above the water surface in the canal by a washing device, which provides for the use of water jets supplied to the lower surface of the web under pressure. The design allows the replacement of a clogged or damaged screen. Conclusions: the proposed design of the filtering intake with a device protecting the filtering panels from debris drawn by the water flow onto their surface increases the reliability of the filtering water intake for water withdrawal from the canal and its preliminary treatment from contaminants before delivering it into the water conduits of the drip irrigation system.

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LAYOUT AND DESIGN SOLUTIONS OF FILTERING WATER INTAKES FROM SHALLOW WATERCOURSES FOR DRIP IRRIGATION SYSTEMS

Ecology and water management ◽

10.31774/2658-7890-2021-3-3-103-120 ◽

2021 ◽

Author(s):

A. S. Shtanko ◽

◽

V. N. Shkura ◽

Keyword(s):

Water Intake ◽

Drip Irrigation ◽

Agricultural Development ◽

Drainage Water ◽

Low Flow ◽

Mountain Streams ◽

Irrigation Systems ◽

Flow Rates ◽

Hydrographic Features ◽

Sand And Gravel

Purpose: development of layout and design schemes for low-flow water intakes, arranged on shallow river and stream watercourses for supplying water to drip irrigation systems. Agricultural development of terraces and floodplains of small foothill and mountain streams actualizes the development of facilities for water intake from them for the purpose of irrigating land. Morphological and hydrographic features, including shallow low-water depths, high flow rates, flow rates variability, saturation with sediments, the presence of underflow and overflow runoff, etc., make water intake from such watercourses difficult and specific. These circumstances predetermine the relevance of water intake structures development corresponding to the specified conditions. Materials and Methods. When developing the layout and design schemes of low-flow water intakes from shallow watercourses, the technologies of exploratory design of engineering systems and structures were used. Results. With regard to the morphometric, hydrological and other conditions of shallow foothill and mountain streams, a water intake with a bottom water intake was adopted for development. The water intake part of headworks is designed in the form of a toe drain, which has under-flow and overflow intake parts that allow water intake from the channel and off-channel water streams. The toe is made of two or three layers of sand and gravel material. Drainage pipes or pipe filters are used as a drainage element. Depending on the conditions of the watercourse, water intakes with transverse, longitudinal and pocket-coastal placement of water intakes are proposed. Conclusion. The layout and design schemes of filtering water intakes from shallow watercourses based on the use of overflow, underflow and combined structures of multilayer drainage water intakes with stream (transverse and longitudinal) and off-channel (pocket-coastal) placement have been proposed and developed.

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Identification and Management of Clustered Pellitory (Parietaria praetermissa) in Citrus Groves

EDIS ◽

10.32473/edis-hs1341-2019 ◽

2019 ◽

Vol 2019 (5) ◽

pp. 3

Author(s):

Ramdas Kanissery ◽

Biwek Gairhe ◽

Brent Sellers ◽

Steve Futch

Keyword(s):

Drip Irrigation ◽

Early Summer ◽

Irrigation Systems ◽

Spray Pattern ◽

Citrus Groves ◽

Low Volume ◽

Florida Citrus ◽

Heavy Infestation

In Florida, clustered pellitory is becoming a troublesome weed for citrus, especially from the winter through early summer. Inadequate management of this weed can result in its heavy infestation in tree rows and can interrupt the spray pattern of low-volume drip irrigation systems. This new 3-page publication of the UF/IFAS Horticultural Sciences Department will assist Florida citrus growers with proper identification of clustered pellitory and with adoption of adequate and timely strategies to manage this weed in their groves. Written by Ramdas Kanissery, Biwek Gairhe, Brent Sellers, and Steve Futch. https://edis.ifas.ufl.edu/hs1341

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THE APPLICATION OF WELLBEING RESEARCH TO REGIONAL LEVEL IN LITHUANIA

Proceedings of the 7th International Scientific Conference Rural Development 2015 ◽

10.15544/rd.2015.103 ◽

2015 ◽

Cited By ~ 1

Author(s):

Gintarė VAZNONIENĖ ◽

Bernardas VAZNONIS

Keyword(s):

Social Sciences ◽

Regional Development ◽

Good Practice ◽

Research Problem ◽

Regional Level ◽

Advantages And Disadvantages ◽

Foreign Countries ◽

Analysis And Synthesis ◽

Key Factor ◽

Development Context

In this article the significance of wellbeing research in the regional level in Lithuania has been analyzed, the advantages and disadvantages of the objective and subjective wellbeing research have been evaluated. The results of the analysis of wellbeing research reveal that the wellbeing research in the regional level is poorly amplified, the wellbeing research in the social sciences is not marked, the wellbeing is investigated in other fields not in social sciences or according to the aims of the researher and more often causes and outcomes of social economical inequality for regional development are emphasized. Scientific studies show that wellbeing research can have big influence for shaping the future of regions because it concerns local people, their choices and overall wellbeing of a particular region. Findings from foreign countries good practice disclose that wellbeing is currently widely used as a key factor and trend for the development policy evaluation. Accordingly in this article big attention is drawn to wellbeing research possible effect for policymakers. It can be concluded that wellbeing research should become an important discussion object in the regional development context because it reveals the situation about people overall wellbeing and particular life domains. The main aim of this article is to analyse the importance of wellbeing research to regional level in Lithuania. The research problem of this article is the fact that the poor experience of wellbeing research in Lithuania insufficiently reveals the wellbeing expression and use in the regional level. In the research common research methods like analysis and synthesis of the scientific literature, analysis of documents and comparative analysis have been employed.

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The experience of designing and building of drip irrigation systems in the Krasnodar territory

Prirodoobustrojstvo ◽

10.26897/1997-6011/2018-4-85-88 ◽

2018 ◽

pp. 85-88

Author(s):

A.K. Semerdjian ◽

◽

А.V. Ben ◽

◽

Keyword(s):

Drip Irrigation ◽

Irrigation Systems

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Reinforcement of Recycled Aggregate by Microbial-Induced Mineralization and Deposition of Calcium Carbonate—Influencing Factors, Mechanism and Effect of Reinforcement

Crystals ◽

10.3390/cryst11080887 ◽

2021 ◽

Vol 11 (8) ◽

pp. 887

Author(s):

Chunhua Feng ◽

Buwen Cui ◽

Haidong Ge ◽

Yihong Huang ◽

Wenyan Zhang ◽

...

Keyword(s):

Calcium Carbonate ◽

Global Economy ◽

Low Cost ◽

High Water ◽

Strengthening Mechanism ◽

Recycled Aggregate ◽

Strengthening Effect ◽

Calcium Carbonate Precipitation ◽

Environmental Friendliness ◽

Advantages And Disadvantages

Recycled aggregate is aggregate prepared from construction waste. With the development of a global economy and people’s attention to sustainable development, recycled aggregate has shown advantages in replacing natural aggregate in the production of concrete due to its environmental friendliness, low energy consumption, and low cost. Recycled aggregate exhibits high water absorption and a multi-interface transition zone, which limits its application scope. Researchers have used various methods to improve the properties of recycled aggregate, such as microbially induced calcium carbonate precipitation (MICP) technology. In this paper, the results of recent studies on the reinforcement of recycled aggregate by MICP technology are synthesized, and the factors affecting the strengthening effect of recycled aggregate are reviewed. Moreover, the strengthening mechanism, advantages and disadvantages of MICP technology are summarized. After the modified treatment, the aggregate performance is significantly improved. Regardless of whether the aggregate was used in mortar or concrete, the mechanical properties of the specimens were clearly improved. However, there are some issues regarding the application of MICP technology, such as the use of an expensive culture medium, a long modification cycle, and untargeted mineralization deposition. These difficulties need to be overcome in the future for the industrialization of regenerated aggregate materials via MICP technology.

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