Compost Leachate Mixing Assembly With Venturi Dosing

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Solution Overview

Problem

Existing composters do not provide a convenient way to collect and utilize leachate, a nutrient-rich liquid byproduct of the composting process, which is typically discarded as waste.

Innovation Solution

A compost leachate distribution device comprising a composting chamber, leachate collection chamber, and mixing arrangement with dosing means to control the flow of leachate, allowing for the collection, mixing, and distribution of leachate as a fertilizer or weed treatment.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If leachate is collected and stored in existing composters, then leachate can be utilized as fertilizer, but the composter structure becomes complex and requires additional components

Engineering Contradiction:

Improveleachate utilization capabilityVSAvoidcomposter structure

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent combines the leachate collection chamber, mixing chamber, and distribution system into a single integrated bottle assembly that can be placed within existing composter structures. This merging approach allows leachate utilization functionality to be added without requiring complex modifications to the composter itself, resolving the contradiction between versatility and device complexity.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The bottle assembly serves multiple functions: collecting leachate from the composter, mixing it with water, and distributing it for use as fertilizer or weed treatment. This multi-functional design enables leachate utilization while maintaining a simple, compact structure that can be easily integrated into various composter types.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Productivity

If leachate is mixed with water for distribution, then leachate can be efficiently utilized, but additional mixing components and water supply connections are required

Engineering Contradiction:

Improveleachate distribution efficiencyVSAvoidmixing arrangement

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The mixing arrangement is designed to be self-regulating, using the flow of water itself to create mixing action through venturi effects and turbulence. The dosing means automatically controls the rate of leachate addition based on water flow conditions, eliminating the need for complex mechanical dosing mechanisms or external control systems.

Inventive Principle:

Principle #25Self-service

3Measurement precision

If dosing means is added to control leachate flow rate, then leachate application precision is improved, but the mixing arrangement becomes more complex

Engineering Contradiction:

Improveleachate flow rate controlVSAvoidmixing arrangement

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The patent replaces complex mechanical dosing mechanisms with a passive dosing system that uses fluid dynamics principles. The venturi mixer and water flow characteristics automatically regulate leachate addition rate, achieving precise dosing control without mechanical moving parts or complex control systems.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

4Volume of moving object

If a compact leachate collection system is designed, then space is saved, but access for cleaning and maintenance becomes difficult

Engineering Contradiction:

Improvecollection system sizeVSAvoidcleaning accessibility

Core Design Contradiction:

Volume of moving objectVSEase of operation

Solution Approach 1:

The leachate collection system is designed as a removable, separable bottle assembly that can be easily detached from the composter structure. This segmentation allows the collection chamber to be compact during operation while providing easy access for cleaning and maintenance by simply removing the bottle from its mounting position.

Inventive Principle:

Principle #1Segmentation

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

Enables efficient collection and distribution of leachate for use as a fertilizer and/or weed treatment, providing a compact and efficient system for generating, collecting, and distributing compost leachate.

Implementation Method 1

The leachate mixing arrangement may comprise a venturi mixing tube provided between the first inlet and the outlet of the mixing chamber and a dip tube providing a fluid path from the leachate collection chamber to the venturi mixing tube, wherein the venturi mixing tube and the dip tube act as said dosing means. It will be appreciated that as water flows through the venturi tube pressure in a constriction of the venturi will reduce which will serve to suck fluid out of the leachate collection chamber.

Methodology Applied

Scientific EffectVenturi effect: Venturi Effect

Data Source

PatentUS12473241B2Compost leachate distribution devices

Publication Date: 2025.11.18 EXEL INDUSTRIES

AI summary

A compost leachate distribution device includes a composting chamber for receiving material to be composted and a leachate collection chamber for collecting, via a leachate fluid path, leachate generated during composting in the composting chamber. The device has a leachate mixing arrangement a first inlet for receiving a flow of water, a mixing chamber to which the first inlet leads for mixing water with leachate to form a water/leachate mix and an outlet leading from the mixing chamber to the exterior for exit of the water/leachate mix, wherein the leachate mixing arrangement has dosing means for controlling a rate of flow of leachate from the leachate collection chamber into the mixing chamber.