Hydroponic Plumbing with Local Buffer to Prevent Cross-Contamination
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Solution Overview
Problem
Current hydroponic systems face inefficiencies due to high flow rates, which lead to challenges in modular growth, nutrient delivery, and increased risk of waterborne diseases, as well as high costs and complexity in plumbing systems.
Innovation Solution
A low flow plumbing system with a global water source, one-way water transport mechanism, and local buffer that decouples water sources to prevent cross-contamination, allowing for on-demand water delivery to growing trays without filtering or dumping, and utilizing robotic transport and gravity flow to reduce water volume and complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If traditional hydroponic systems use high flow rates to deliver water and nutrients, then plants receive adequate water and nutrients, but water usage becomes extremely inefficient and plumbing complexity increases
Solution Approach 1:
The system divides the water delivery into two stages: a high-flow bulk water delivery phase followed by a low-flow nutrient delivery phase. This segmentation allows efficient water transport while reducing overall water consumption and plumbing complexity requirements.
Solution Approach 2:
Water is delivered to the grow tray in advance before nutrients are added. The bulk water delivery prepares the environment by filling the tray and activating the water pump, creating optimal conditions for subsequent nutrient delivery at lower flow rates.
2Reliability
If hydroponic systems recirculate or drain large amounts of water, then unused water is removed to prevent overwatering, but this creates an extremely inefficient watering system
Solution Approach 1:
The system uses plant uptake and evaporation to naturally remove excess water and nutrients from the grow tray, eliminating the need for active drainage or recirculation systems. This self-regulating approach prevents overwatering while maintaining high efficiency.
Solution Approach 2:
The water pump operates in periodic cycles, delivering bulk water initially then switching to low-flow nutrient delivery. This periodic operation allows the system to efficiently manage water levels without continuous high-flow recirculation or drainage.
3Device complexity
If a single global water source is used for all growing trays, then system simplicity is maintained, but cross-contamination between trays cannot be prevented
Solution Approach 1:
The system separates water delivery into a global bulk water source and local individual tray reservoirs. Each tray receives water independently, preventing cross-contamination while maintaining overall system simplicity. The segmentation occurs at the delivery point rather than the source.
Solution Approach 2:
Individual grow trays act as intermediaries between the global water source and the plants. Each tray isolates its water supply, preventing direct connection between trays while still allowing centralized water delivery through the bulk phase.
4Productivity
If high flow rates are used to deliver water and nutrients, then adequate supply to plants is ensured, but the risk of waterborne diseases increases
Solution Approach 1:
The system segments water delivery into bulk water phase and nutrient phase, with each tray isolated during nutrient delivery. This reduces waterborne disease risk while maintaining adequate supply through the two-stage approach.
Solution Approach 2:
The system uses periodic pumping cycles with high flow initially for water delivery, then low flow for nutrients. This temporal separation reduces pathogen spread risk while ensuring adequate water and nutrient supply to plants.
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 solution reduces water usage, lowers costs, enhances flexibility in nutrient delivery, and minimizes the risk of waterborne diseases by ensuring targeted nutrient delivery and isolation of water supplies, resulting in a more efficient and cost-effective hydroponic system.
Implementation Method 1
The local buffer is configured to create a local water source to be used by the growing tray. The local water source is decoupled from the global water source such that cross-contamination of water from the local water source and the global water source is prevented.
Implementation Method 2
water is delivered via gravity flow even in the event of a power loss
Data Source
AI summary
A plumbing system and water transport method. The system includes a global water source, a one way water transport mechanism, a growing tray, and a local buffer. The local buffer separates the global water source and the growing tray to prevent cross-contamination of water. The local buffer also continuously provides water to the growing tray on demand without the need for filtering or dumping of used or excess water. This results in low flow, efficient water transport.