Field Fermentation Device Using Passive Wind Ventilation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Centralized composting sites face challenges in treating decentralized agricultural organic wastes due to high collection, storage, and transportation costs, leading to inefficient material circulation and poor composting quality, especially in maintaining temperature and moisture levels in small fermentation piles.
Innovation Solution
A field in-place film-covering fermentation device comprising a support structure, a microporous polytetrafluoroethylene covering film, and a ventilation structure with a non-power wind cap, electric air valve, and solar power supply, which uses passive air suction to maintain optimal composting conditions without external power, reducing costs and improving composting efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If decentralized organic wastes are treated at centralized composting sites, then processing capacity is improved, but collection, storage and transportation costs increase significantly
Solution Approach 1:
The invention divides the centralized composting system into multiple distributed field fermentation devices. Each device independently handles local organic waste, eliminating the need for centralized collection and transportation while maintaining effective processing capacity at the source.
Solution Approach 2:
The field fermentation device enables self-sufficient composting at the location where organic waste is generated. The device autonomously manages the fermentation process using natural elements (sunlight, wind, rain) without requiring external power or centralized infrastructure, thus eliminating transportation costs.
2Quantity of substance
If small fermentation piles are used for decentralized organic wastes, then collection costs are reduced, but temperature maintenance and moisture regulation become difficult
Solution Approach 1:
The covering film creates a flexible enclosed environment that traps heat and moisture within the fermentation pile. This flexible shell structure maintains optimal temperature and humidity conditions even in small-scale fermentation, eliminating the heat loss problems associated with open or rigid structures.
Solution Approach 2:
The temperature sensing probe continuously monitors the fermentation pile temperature and provides feedback to the control circuit. When temperature drops below the threshold, the system automatically activates the ventilation structure to generate heat through increased aerobic decomposition, thus maintaining optimal temperature conditions.
3Quantity of substance
If small fermentation piles are used for decentralized organic wastes, then transportation costs are reduced, but regulatory redundancy decreases leading to poor composting quality
Solution Approach 1:
The control system continuously monitors temperature and automatically adjusts ventilation to maintain optimal composting conditions. This feedback mechanism ensures reliable composting quality regardless of pile size, preventing the quality issues that arise from manual regulation in small piles.
Solution Approach 2:
The invention replaces manual mechanical regulation of moisture and temperature with an automated control system that uses sensors and electric valves. This substitution ensures consistent, reliable composting quality without requiring expert intervention or complex manual adjustments.
4Quantity of substance
If traditional ventilation methods are used in field fermentation, then oxygen supply is provided, but power consumption and device complexity increase
Solution Approach 1:
The ventilation structure utilizes natural wind and solar power to drive the composting process. The non-power wind cap captures wind energy to rotate the perforated pipe, creating airflow and oxygen supply without requiring external electricity. This self-service approach eliminates power consumption while maintaining effective ventilation.
Solution Approach 2:
The invention replaces traditional motor-driven ventilation systems with a passive wind-powered mechanism. The non-power wind cap converts wind energy into rotational motion that drives the perforated pipe, providing oxygen supply without complex mechanical systems or external power sources.
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 device enables efficient composting of decentralized organic wastes in-place, reducing composting time to 28 days and improving regional ecological environments by achieving high-standard aerobic composting with low costs and enhanced quality.
Implementation Method 1
Vinteral max represents a maximum internal wind speed generated by rotation of the non-power wind cap by an external wind pressure
Implementation Method 2
uses passive air suction to maintain optimal composting conditions
Implementation Method 3
The covering film is made of polytetrafluoroethylene material having a microporous structure with a pore size of 0.2 micrometers (μm)
Implementation Method 4
aerobic bacteria can degrade organic wastes to produce finished organic fertilizer through oxidation, decomposition and absorption of organic substances
Implementation Method 5
aerobic bacteria can degrade organic wastes to produce finished organic fertilizer through oxidation, decomposition and absorption of organic substances
Implementation Method 6
field in-place film-covering fermentation device
Data Source
AI summary
A field in-place film-covering fermentation device is provided. The device includes a support structure, a covering film, and a ventilation structure. The support structure is connected to the covering film through cross-connecting rings on the covering film to form a columnar pile structure. The covering film is in a split configuration to form an upper surface, a lower surface, and a side elevation of the columnar pile structure by cutting. The ventilation structure is fixed in the columnar pile structure. The device can realize the in-place and nearby treatment of organic wastes, improve the material conversion efficiency of agricultural organic wastes in their production area, and promote the improvement of the regional ecological environment.