High-Nitrate Irrigation Water Filtration for Organic Substrate Cultivation
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Solution Overview
Problem
Existing methods for producing water with high nitrate content for organic cultivation are inefficient, leading to nitrate loss during storage and transportation, and result in substrate-grown plant growth that is suboptimal due to insufficient nitrogen supply and microbial contamination of irrigation systems.
Innovation Solution
A method involving the production of water with a stable nitrate content of 5-200 mmol/l by contacting organic matter with ammonification and nitrifying bacteria, followed by membrane separation to remove organic matter, fungi, and bacteria, ensuring the water is substantially free of these contaminants.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If organic liquid with high nitrate content is produced and stored for later use, then plant nutrition can be provided in advance, but nitrate is lost during storage and transportation
Solution Approach 1:
The patent applies preliminary action by producing and storing organic matter (such as animal manure or plant-based organic materials) that will be converted to nitrate in-situ within the irrigation system. This organic matter is prepared in advance and placed in the bioreactor, where it will be converted to nitrate solution only when needed for plant irrigation, eliminating storage losses of the actual nitrate solution.
Solution Approach 2:
The patent uses an intermediary approach by introducing bacteria (nitrifying bacteria such as Nitrosomonas and Nitrobacter) as mediators that convert organic nitrogen compounds into nitrate. These bacteria are introduced into the irrigation water system and continuously convert organic matter into nitrate solution on-demand, ensuring stable nitrate supply without storage losses.
2Quantity of substance
If organic liquid is transported to greenhouse, then plants can receive nitrogen nutrients, but organic matter and micro-organisms accumulate in transport and irrigation systems blocking water flow
Solution Approach 1:
The patent applies the extraction principle by separating the nitrate production function from the irrigation delivery system. Nitrate is produced in-situ within a compact bioreactor integrated into the irrigation system, and only the clear nitrate solution is delivered to plants. This extracts the harmful organic matter and bacteria from the delivery system, preventing accumulation and blockages while maintaining nitrogen supply.
Solution Approach 2:
The patent replaces the mechanical transportation system (pumping and transporting organic liquid through pipes) with a biological conversion system. Instead of mechanically transporting organic matter, the system uses bacterial conversion to produce nitrate in-situ, eliminating the need for complex transport infrastructure and reducing maintenance issues related to blockages.
3Quantity of substance
If organic liquid is transported over long distance, then plants can be fertilized, but nitrate content decreases before reaching plants
Solution Approach 1:
The patent applies preliminary action by preparing organic matter in advance and placing it in the bioreactor, which then converts it to nitrate solution on-demand at the location where plants are growing. This eliminates transport time losses because the nitrate is produced where and when it is needed, rather than being transported from a remote location.
Solution Approach 2:
The patent implements self-service by making the irrigation system self-sufficient in producing its own nitrate solution. The bioreactor continuously converts organic matter into nitrate using bacteria, providing a continuous on-site supply of nitrogen nutrients without requiring external transportation, thereby eliminating losses during transport and ensuring fresh nitrate solution reaches plants immediately.
4Ease of manufacture
If micro-organisms are present in irrigation system, then organic matter can be converted to nitrate, but micro-organisms contaminate the system and block water flow
Solution Approach 1:
The patent applies extraction by separating the bacterial conversion process from the plant irrigation stream. Bacteria are confined to a dedicated bioreactor chamber where they convert organic matter to nitrate, and then only the purified nitrate solution is delivered to plants. This extracts harmful microorganisms from the plant-contacting irrigation water while preserving their useful nitrogen-conversion function.
Solution Approach 2:
The patent uses a physical barrier (membrane or filter) as an intermediary between the bacterial conversion chamber and the plant irrigation system. This intermediary allows passage of dissolved nitrate while blocking bacteria and organic particles, enabling the beneficial bacterial conversion function while preventing microbial contamination of the plant-growing environment.
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
The method achieves stable nitrate content in water, preventing nitrate loss and microbial contamination, suitable for organic cultivation, enhancing plant growth and yield, particularly in substrate-based systems.
Implementation Method 1
contacting water comprising organic matter having at least 100 ppm of nitrogen compounds with ammonification and nitrifying bacteria to obtain water having a nitrate content of between 5-200 mmol/l
Implementation Method 2
Microorganisms, such as fungi and bacteria present in the soil, convert proteins and amino acids into nitrate in a nitrification process
Implementation Method 3
passing the water obtained in step a) through a membrane to separate organic matter, fungi and/or bacteria from the water
Data Source
AI summary
The present invention relates to a method for producing water having a stable high nitrate content, an organic fertilizer comprising the water having a stable high nitrate content thus produced, and use of the water having a stable high nitrate content in a method for the organic cultivating of a plant in a substrate. The present invention further relates to a continuous flow system for supplying plants with the water having a stable high nitrate content.


