Urine-Separating Composting Toilet With Full-Level Sensing
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Solution Overview
Problem
Traditional composting toilets require frequent addition of peat moss to absorb urine, leading to rapid filling of the composting chamber and environmental concerns associated with chemical toilets, while lacking effective separation of urine and fecal matter.
Innovation Solution
A composting toilet design that separates urine and fecal matter using a toilet bowl with distinct openings and a urine bottle with a sensor and agitator, along with a composting bin equipped with an agitator handle and ratchet assembly, allowing for bidirectional movement and unidirectional actuation, facilitating easy operation and reducing the need for peat moss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If peat moss is added after each use to absorb urine, then urine absorption is improved, but the composting chamber fills up quickly
Solution Approach 1:
The toilet system is divided into separate functional zones: a first receptacle for feces and a second receptacle for urine. This segmentation allows urine to be collected separately without occupying composting chamber space, eliminating the need to add peat moss to the composting chamber for urine absorption.
Solution Approach 2:
Urine is extracted from the composting process by providing a separate collection receptacle. The urine receptacle is configured to receive urine directly, removing it from the composting chamber where it would otherwise require peat moss for absorption and reduce composting efficiency.
2Object-affected harmful factors
If chemicals are used to mask odor in traditional portable toilets, then odor masking is improved, but environmental harm increases
Solution Approach 1:
By separating urine and feces into different receptacles, the system eliminates the need for chemical odor masks. The separation allows for more effective and environmentally friendly odor management through proper composting of fecal matter without chemical interference.
Solution Approach 2:
The composting toilet system uses natural composting processes to manage odor without requiring external chemical additives. The separation of urine and feces enables the composting process to function naturally, providing odor control through biological decomposition rather than chemical masking.
3Device complexity
If urine and feces are mixed in the same receptacle, then toilet structure is simplified, but composting efficiency decreases
Solution Approach 1:
The toilet system is segmented into separate receptacles for urine and feces. This segmentation improves composting efficiency by preventing urine from interfering with the composting process, while the separate collection makes the system relatively simple to construct and maintain.
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 solution effectively separates and processes human waste, reducing the need for peat moss, improving ease of use, and minimizing environmental impact by automatically indicating when the urine bottle is full and utilizing gravitational forces for drainage, thus enhancing the composting process.
Implementation Method 1
urine falls into a bottle in which the height of the urine can be measured
Implementation Method 2
The drain is formed in a major exterior surface of the bottle adjacent to a rear surface of the bottle, for example. The drain may have a threaded insert configured to receive a drain valve. Advantageously, the drain valve improves the user's ability to drain the bottle, since the drain utilizes gravitational forces to empty the bottle
Data Source
AI summary
A composting toilet assembly has a composting bin with an agitator, a toilet bowl, and a urine bottle. The agitator has an agitator handle configured to actuate the agitator. The agitator may have a ratchet assembly including a hub, a clutch bearing disposed in the hub, and a pair of brass bushings disposed in the hub. The toilet bowl is disposed on the composting bin. The toilet bowl has a main body with a recess. The recess may have a first portion and a second portion with a partition wall. Each of the first portion and the second portion has an opening. The urine bottle is in fluid communication with the bowl. The urine bottle is configured to receive urine. The urine bottle has a drain, a handle, and a sensor. The sensor may have a light and be configured to detect a predetermined urine level in the urine bottle.