Livestock Excrement Fermentation Drying System
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Solution Overview
Problem
The existing methods for treating livestock excrement are inefficient, leading to excess accumulation and high costs, as fermentation does not always progress as expected, and the treatment process generates significant waste and requires expensive equipment.
Innovation Solution
A system utilizing reduced-pressure fermentation drying equipment to store and heat livestock excrement in an airtight container, decomposing organic matter with microorganisms and generating a heat source by combusting the dried product, which reduces volume and treatment costs, and includes a heat source equipment to produce steam without generating waste.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If excrement is piled in a compost shed for conventional treatment, then fermentation can occur, but fermentation progress is unreliable and excess excrement accumulates when fermentation does not progress as expected
Solution Approach 1:
The patent applies parameter changes by controlling temperature, pressure, and oxygen levels in the fermentation tank. The system maintains temperature between 20-40°C, operates under controlled pressure conditions, and regulates oxygen concentration to optimize microbial activity. These controlled parameters ensure reliable and consistent fermentation progress, preventing excrement accumulation that occurs in conventional open composting systems.
2Quantity of substance
If large amounts of excrement are treated, then complete treatment is achieved, but treatment costs increase significantly
Solution Approach 1:
The patent merges multiple functions into a single integrated system. The fermentation tank simultaneously performs fermentation, drying, and concentration functions. The generated heat from microbial activity is reused for drying the excrement, eliminating the need for separate heating and drying systems. This integration reduces overall system complexity and treatment costs while maintaining the ability to handle large volumes of excrement.
3Volume of moving object
If reduced-pressure fermentation drying equipment is used to decompose organic matter, then volume reduction is achieved, but installation space and equipment complexity increase
Solution Approach 1:
The fermentation tank is designed as a multi-functional device that performs fermentation, drying, and concentration in one unit. The system uses the heat generated during fermentation to drive the drying process, eliminating the need for separate heating equipment and drying chambers. This multi-functionality achieves significant volume reduction of excrement while minimizing the installation space and equipment complexity required.
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
This system efficiently decomposes and reduces the volume of livestock excrement, significantly lowering treatment costs, utilizing the dried product as fuel to generate heat while minimizing waste and installation space, and includes a generator to convert heat into electricity, covering part of the system's power consumption.
Implementation Method 1
heat and stir the content under reduced pressure so that the temperature of the waste is within a predetermined temperature range in order to dry the waste by efficiently evaporating water
Implementation Method 2
generates a heat source by combusting the obtained volume-reduced dried product
Implementation Method 3
decomposes organic components of organic matter using microorganisms
Data Source
AI summary
A system for treating excrement of livestock includes: reduced-pressure fermentation drying equipment configured to store excrement of livestock in an airtight container, heat and stir the excrement of livestock under reduced pressure so that a temperature of the excrement of livestock is within a predetermined temperature range, decompose organic components of organic matter using microorganisms, and obtain volume-reduced dried product; and heat source equipment that is provided on a downstream side of the reduced-pressure fermentation drying equipment and generates a heat source by combusting the obtained volume-reduced dried product.