Seawater Hydroponic System with Filtration and Salt Diffusion Control
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Solution Overview
Problem
Current hydroponic systems lack the capability for large-scale, cost-effective seawater-based cultivation of salt-tolerant plants due to challenges in removing bacteria, waste, and heavy metals from seawater, and existing methods rely on gene modification or complex structures to achieve salt tolerance.
Innovation Solution
A hydroponic system using seawater with a removal unit to filter out bacteria and unwanted substances, including heavy metals, and a cultivation system with a salt diffusion inhibition structure to promote seedling growth using fresh water for rooting and salt water for further development, allowing for stable and efficient seawater-based cultivation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If seawater is used directly for hydroponic cultivation, then the system can operate with simple water supply, but bacteria and unwanted matter in seawater harm plant growth
Solution Approach 1:
The patent extracts and removes harmful components (bacteria, unwanted matter) from seawater using a removal unit while retaining the seawater itself for cultivation. This resolves the contradiction by eliminating the harmful aspects while preserving the beneficial saltwater environment for salt-tolerant plants.
Solution Approach 2:
The removal unit acts as an intermediary between the seawater source and the cultivation system, processing seawater to remove harmful substances before it contacts the plants. This mediator approach maintains system simplicity while protecting plants from harmful factors.
2Adaptability or versatility
If seawater is used for cultivation, then salt-tolerant plants can be grown, but heavy metals and detrimental substances in seawater pose contamination risks
Solution Approach 1:
The removal unit specifically extracts and removes heavy metals and detrimental substances from seawater while preserving the salt concentration needed for salt-tolerant plant growth. This enables safe cultivation of salt-tolerant plants without contamination risks.
Solution Approach 2:
The system converts potentially harmful seawater into a beneficial cultivation medium by removing harmful substances while retaining the salt environment that salt-tolerant plants need, thus transforming a risk into an advantage.
3Adaptability or versatility
If gene modification is used to achieve salt tolerance, then plants can grow in seawater, but gene modification introduces safety and ethical concerns
Solution Approach 1:
Instead of modifying the genetic parameters of plants, the system changes the water parameters by removing harmful substances from seawater. This allows cultivation of naturally salt-tolerant plants in purified seawater, avoiding gene modification while achieving the same adaptability.
4Adaptability or versatility
If complex structures are used to achieve salt tolerance, then plants can be cultivated in seawater, but the system becomes expensive and complicated
Solution Approach 1:
The patent uses a relatively simple removal unit to extract harmful substances from seawater, avoiding the need for complex structures like grafting systems or sophisticated environmental controls. This achieves salt tolerance capability with minimal system complexity.
5Productivity
If large-scale cultivation systems are developed, then mass production is enabled, but the cost and complexity of the system increase
Solution Approach 1:
The removal unit serves multiple functions: removing bacteria, unwanted matter, and heavy metals from seawater. This multi-functionality allows large-scale cultivation with a relatively simple system design, as one unit handles multiple purification tasks that would otherwise require separate systems.
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
Enables large-scale, high-productivity seawater-based hydroponic cultivation while maintaining a simple and low-cost structure, ensuring the growth of salt-tolerant plants without gene modification and avoiding contamination risks.
Implementation Method 1
a removal unit that removes bacteria and unwanted matter from the seawater obtained from the sea
Implementation Method 2
a water supply pump that pumps up, from the sea, seawater having a salinity, a bacteria content and an unwanted matter content that are less than or equal to predetermined threshold values
Data Source
AI summary
A hydroponic system (1) using seawater, wherein seawater (W1) is used for hydroponic cultivation of salt-tolerant plants, including a water supply pump (21) that pumps up, from the sea (S), seawater (W1) having a salinity, a bacteria content and an unwanted matter content are less than or equal to predetermined threshold values; a water tub (30) that stores seawater (W1) pumped up by the water supply pump (21) and accommodates salt-tolerant plants (P) to be cultivated; and a filter (27) that removes bacteria and unwanted matter from the seawater (W1) obtained from the sea (S); wherein the seawater (W1) from which the bacteria and the unwanted matter have been removed by the filter (27) is fed to the water tub (30).