Beach Sand Sanitization Using Lime Mixing and Ventilation

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Solution Overview

Problem

Current methods for sanitizing beach sand are inefficient in removing small pollution components and biodegradable products like algae, often deplete the sand during removal, and are costly and time-consuming, especially when trying to address algae and microorganisms.

Innovation Solution

A method involving scattering a layer of lime on the sand, mechanically mixing it, and optionally repeating the process, followed by mechanical ventilation to effectively sanitize and remove pollutants, including small and biodegradable items like algae, without depleting the sand.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-generated harmful factors

If earth-moving machines with front buckets are used to remove pollution from sand, then pollution removal capability is improved, but sand depletion and beach erosion worsen

Engineering Contradiction:
Improvepollution removal capabilityVSAvoidsand depletion
Core Design Contradiction:
Object-generated harmful factorsVSLoss of substance

Solution Approach 1:

The invention extracts and removes only the harmful pollutants (algae, organic matter, microorganisms) from the sand while leaving the sand itself intact. This is achieved through selective removal mechanisms that differentiate between contaminant particles and sand particles, thereby eliminating pollution without depleting the beach sand resource.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The invention applies different treatment qualities to different components in the sand mixture. Pollutants receive intensive treatment (removal, neutralization, or stabilization) while the sand particles receive minimal or no treatment, preserving the sand structure and preventing erosion. This localized quality approach ensures targeted pollution removal without affecting the overall sand mass.

Inventive Principle:
Principle #3Local quality

2Reliability

If mechanical mixing with lime is applied to sanitize sand, then sanitation effectiveness is improved, but treatment time and complexity worsen

Engineering Contradiction:
Improvesanitation effectivenessVSAvoidtreatment time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The invention applies lime to the sand before final drying and stabilization steps, allowing the chemical sanitization process to begin in advance. This preliminary action enables the lime to react with and neutralize organic pollutants and microorganisms during the mixing and initial drying phases, reducing the overall treatment time required to achieve effective sanitation.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The invention maintains continuous useful action throughout the treatment process by combining multiple functions in sequential operations. The lime application, mechanical mixing, and drying phases overlap and continue simultaneously, ensuring that sanitation treatment is constantly applied without interruption. This continuous action maximizes treatment efficiency and reduces total processing time.

Inventive Principle:
Principle #20Continuity of useful action

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 method allows for rapid and cost-effective sanitation of large beach areas by eliminating pollutants and biodegradable products, including small items that cannot be mechanically removed, while preventing erosion and making beaches safe for bathing.

Implementation Method 1

scattering on the sand to be treated at least one first layer of lime

Methodology Applied
Scientific EffectChemical neutralization: Oxidation

Implementation Method 2

mechanically mixing said sand treated with said lime

Methodology Applied
Scientific EffectMechanical mixing: Stirring

Implementation Method 3

mechanically ventilating said sand treated with said lime

Methodology Applied
Scientific EffectMechanical ventilation: Aeration

Data Source

PatentUS11844871B2Method for sanitizing the sand of a beach or of a strand
Publication Date: 2023.12.19 FASSA
  • US11844871B2 patent drawing
  • US11844871B2 patent drawing
  • US11844871B2 patent drawing

AI summary

A method for sanitizing the sand of a beach or strand, comprising a step of scattering on the sand to be treated at least one first layer of lime, followed by a step of mechanical mixing of the sand treated with the lime. It is then optionally possible to repeat the two preceding steps to then move on to a step of mechanical ventilation of the sand treated with the lime.