Multi-Function Shrimp Pond Device for Oxygen and pH Stability
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Solution Overview
Problem
Current shrimp farming technologies face challenges in maintaining optimal dissolved oxygen concentrations and pH levels in shrimp ponds, leading to inefficiencies in oxygen utilization, energy consumption, and waste management, while also causing environmental pollution and health risks.
Innovation Solution
A multi-function device comprising a water flow generator, gas dissolving unit, feeder unit, and controller, along with a siphon system, floating roof, and light system, which integrates sensors and biological agents to manage oxygen and pH levels, and a seaweed-culturing cage to enhance water quality and shrimp growth.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If mechanical oxygen generating systems (air blower and paddle wheel) are used continuously, then dissolved oxygen concentration is maintained, but energy consumption increases significantly
Solution Approach 1:
The patent implements periodic operation of mechanical oxygen generating systems based on real-time dissolved oxygen monitoring. The controller activates air blowers and paddle wheels only when dissolved oxygen falls below threshold values, rather than continuous operation. This periodic action maintains adequate oxygen levels while dramatically reducing energy consumption compared to 24/7 mechanical aeration.
Solution Approach 2:
The system utilizes natural photosynthesis by algae and aquatic plants to generate dissolved oxygen during daytime. By monitoring dissolved oxygen levels and activating mechanical aeration only when natural production is insufficient, the system leverages self-service from biological oxygen production, reducing reliance on energy-intensive mechanical systems.
2Quantity of substance
If air blower and diffusers are used to generate dissolved oxygen, then oxygen is supplied to water, but noise pollution is caused
Solution Approach 1:
Air blowers are operated periodically rather than continuously, activating only when dissolved oxygen monitoring indicates deficiency. This reduces the duration and frequency of noise-generating operations while maintaining adequate oxygen supply, thereby mitigating noise pollution for surrounding communities.
Solution Approach 2:
The system replaces continuous mechanical aeration with biologically-based oxygen production through algae and aquatic plants during daytime. This substitution eliminates the need for continuous operation of noisy air blowers and diffusers, reducing noise pollution while maintaining dissolved oxygen levels through natural photosynthetic processes.
3Quantity of substance
If paddle wheel device is used to mix air into water, then dissolved oxygen increases, but shrimp waste particles are dispersed and difficult to collect
Solution Approach 1:
The patent employs localized aeration strategies where air blowers and diffusers are positioned in specific zones rather than uniform distribution. Paddle wheels are used selectively in areas where waste accumulation needs management. This localized approach allows oxygen injection without excessive dispersion of waste particles across the entire pond, improving waste collection efficiency while maintaining dissolved oxygen levels.
Solution Approach 2:
Paddle wheels are operated periodically to mix water and distribute oxygen only when needed, rather than continuous operation that would constantly disperse waste particles. This periodic mixing allows waste particles to settle in predictable locations between mixing cycles, making them easier to collect with siphon systems while still achieving adequate oxygen distribution.
4Quantity of substance
If mechanical aeration system operates continuously, then dissolved oxygen is maintained at saturation, but oxygen evaporates into air reducing efficiency
Solution Approach 1:
The system incorporates dissolved oxygen monitoring that provides feedback to the controller. When dissolved oxygen reaches or exceeds saturation levels, the controller automatically reduces or stops mechanical aeration operations. This feedback control prevents excessive oxygen generation that would lead to evaporation losses, optimizing oxygen retention in water while maintaining adequate supply for shrimp.
Solution Approach 2:
Mechanical aeration operates periodically based on dissolved oxygen levels rather than continuously. When oxygen levels are sufficient, aeration is paused, preventing oversaturation and subsequent evaporative losses. This periodic operation maintains oxygen within optimal ranges without the waste associated with continuous saturation-level aeration.
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 maintains high dissolved oxygen levels and stable pH, reduces energy consumption, enhances waste management, and promotes shrimp growth, resulting in increased productivity and yield.
Implementation Method 1
gas dissolving unit for dissolving oxygen molecules into the water of shrimp pond
Implementation Method 2
water flow generator for creating water flows in layers with a decreasing volumetric flow rate from the bottom to the surface of the shrimp pond
Data Source
AI summary
Provided are multi-function device for intensive shrimp farming, intensive shrimp ponds using this device and method for operating this pond. The multi-function device of the present invention comprises: water flow generator; feeder unit; gas dissolving unit; sensor and control operating the entire device. The intensive shrimp pond of the present invention comprises at least one multi-function device and has a reasonable operating method that uses algae and microorganisms to keep the DO concentration in the pond always high and the pH in the pond stable in optimal threshold.