Continuous Fertigation System for Micro-Irrigation Plugging
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Solution Overview
Problem
Micro-irrigation systems are prone to plugging due to the sensitivity to water quality and the inclusion of fertilizers, leading to uneven distribution of water and nutrients, and are often limited to using pure water sources, while conventional fertigation methods result in unbalanced nutrient availability and increased costs due to high concentrations of nutrient-extraneous materials.
Innovation Solution
A method and system for continuous fertigation using a potassium-nutrient feedstock composed of potassium hydroxide and a mineral acid, such as sulfuric acid, which are intermixed in the irrigation system to provide a high-dilution environment, reducing nutrient-extraneous materials and maintaining consistent nutrient availability, and are automatically controlled to maintain optimal concentrations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If fertilizers are added to micro-irrigation systems, then nutrient delivery to crops is improved, but plugging of emitters occurs due to insoluble salt formation and particulate deposition
Solution Approach 1:
The patent changes the chemical parameters of the fertilizer solution by controlling pH and using chelating agents to keep nutrients in soluble form. This prevents the formation of insoluble salts that cause plugging, while still delivering adequate nutrient quantities to crops through the micro-irrigation system
Solution Approach 2:
The patent introduces chelating agents as intermediary substances that bind with metal ions (calcium, magnesium, manganese) to prevent them from forming insoluble precipitates. These chelates act as mediators between the fertilizer nutrients and the irrigation water, allowing nutrient delivery without plugging
2Quantity of substance
If conventional fertilizers with high NPK content are used, then crop nutrient requirements are met, but nutrient-extraneous materials increase costs and cause plugging
Solution Approach 1:
The patent extracts only the essential NPK nutrients from conventional fertilizer formulations, delivering them through irrigation water at lower concentrations. By separating the nutrient delivery function from the bulk fertilizer material, the system eliminates nutrient-extraneous materials while maintaining adequate nutrient supply to crops
Solution Approach 2:
The patent creates a simplified version of conventional fertilizer by dissolving essential nutrients in irrigation water. This liquid copy of fertilizer delivery eliminates the need for solid fertilizer formulations with their associated extraneous materials, reducing both cost and plugging risk
3Productivity
If micro-irrigation systems use refined emitters for precise water delivery, then water distribution efficiency is improved, but sensitivity to water quality and fertilizer additives increases
Solution Approach 1:
The patent applies beforehand cushioning by adding corrosion inhibitors and chelating agents to the irrigation water before it reaches the emitters. These protective substances cushion the refined emitter components against the harmful effects of fertilizer chemicals and water quality variations, preventing plugging and fouling
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach drastically reduces the cost of fertilizer application, minimizes plugging issues in micro-irrigation systems, and ensures uniform nutrient availability throughout the crop cycle, reducing the need for frequent fertilizer applications and maintaining efficient water distribution.
Implementation Method 1
The potassium-nutrient feedstock is comprised of a plurality of feedstock raw materials, and such raw materials generate an exotherm upon intermixing with each other
Data Source
AI summary
An agricultural fertigation method includes the continuous introduction of concentrated raw materials into a high-dilution irrigation-water environment whereby the stream of flowing irrigation water dampens the resultant dissolution and reaction exotherms. A system wherein raw materials are efficiently continuously fed to the irrigation system main line or a side-arm reactor efficiently implements the method.