Aquaponic System with Solids Separator and Nitrification Tank
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Solution Overview
Problem
Conventional aquaponic systems experience significant water and waste discharge, which is not fully utilized for plant production, limiting their efficiency and scalability.
Innovation Solution
An aquaponic system that includes a solids separator to separate settleable solids from suspended waste water, a series of tanks for converting waste water into nutrient-rich water through nitrification and degassing, and a substrate-based growth apparatus for utilizing nutrient-rich sludge, minimizing waste and maximizing plant growth.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of substance
If conventional aquaponic raft systems are used, then fish farming and plant production are combined, but water and fish waste are discharged daily without full utilization
Solution Approach 1:
The system recovers and reuses water and nutrients that would otherwise be discharged. The solids separator captures settleable solids, the nitrification tank converts ammonia to nitrate, and the degassing tank removes excess gases, allowing continuous recycling of nutrient-rich water back to the fish tank and hydroponic system, eliminating daily discharge while maximizing plant production.
Solution Approach 2:
The system converts fish waste, which is typically harmful discharge, into beneficial nutrients for plant growth. The nitrification process transforms ammonia (harmful to plants in excess) into nitrate (beneficial nutrient), and the degassing process converts excess dissolved gases into removable bubbles, turning potential harm into plant-friendly nutrient solution.
2Device complexity
If nitrification is performed directly in raft tanks, then the process is simple, but nutrient utilization efficiency is limited
Solution Approach 1:
The system segments the nitrification process into dedicated tanks (nitrification tank and degassing tank) separate from the fish tank and hydroponic system. This segmentation allows each component to perform its specific function optimally: nitrification occurs in controlled conditions in the nitrification tank, gas removal occurs in the degassing tank, and the resulting nutrient-rich water is then applied to plants, maximizing nutrient utilization efficiency.
3Ease of manufacture
If conventional systems discharge waste daily, then maintenance is simple, but material waste occurs
Solution Approach 1:
The system implements continuous recycling of water and nutrients through the solids separator, nitrification tank, and degassing tank. Instead of periodic discharge and refilling, the system maintains continuous circulation and transformation of waste materials into usable nutrients, eliminating material waste while requiring only routine operation of the separation and treatment components.
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 system nearly eliminates water and waste discharge, drastically increasing plant production, allowing for commercial-scale food production and optimizing nutrient availability for diverse crop growth.
Implementation Method 1
a solids separator configured to accept waste water and separate settleable solids from suspended-waste water
Implementation Method 2
Nitrification, a process that generates nitrogen, is conventionally performed directly in the raft tanks
Implementation Method 3
a degassing tank configured to convert the nitrified water to the nutrient-rich water
Data Source
AI summary
High-production, minimal-discharge aquaponic systems and methods. The aquaponic systems separate waste water generated from fish tanks into two flow streams. In the first flow stream, suspended-waste water generated from the waste water is converted to nutrient-rich water and used for hydroponic plant growth. Nutrient-depleted water resulting from the hydroponic plant growth is fed back into fish tanks to continue the cycle. In the second flow stream, settleable solids generated from the waste water is converted to nutrient-rich sludge and used for solid or semi-solid substrate-based plant growth. Excess nutrient-rich water derived from the second flow stream is fed back into the first flow stream, thereby conserving water and nutrients within the system.