Micro Hydrocyclone Soil Remediation by Particle Size
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Solution Overview
Problem
Conventional soil remediation devices lack efficiency in addressing contamination differences by particle size, leading to inefficient remediation of highly contaminated fine soil, particularly in areas like paddy fields, seaside, and mountain ranges, resulting in high costs and prolonged remediation times.
Innovation Solution
A system utilizing multiple micro hydrocyclones to separate contaminated soil by particle size, including a mill for individualizing soil, a screen for initial separation, multiple micro hydrocyclones for fine separation, a remediating unit for targeted washing, and a filtering unit for process water recycling, which includes coagulation and settlement, and Fe3+-modified activated carbon for contaminant absorption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional soil washing devices remediate all contaminated soil irrespective of particle size, then the remediation process is simple to operate, but the remediation efficiency is low and costs are high
Solution Approach 1:
The invention segments the soil remediation process by particle size using multiple micro hydrocyclones that separate soil into different size fractions (coarse, medium, fine soil). Each fraction is then remediated separately according to its specific contamination characteristics, improving overall efficiency while maintaining operational simplicity through automated separation.
2Device complexity
If conventional soil washing devices treat all soil uniformly, then the device complexity is low, but the remediation time is prolonged
Solution Approach 1:
The device uses multiple micro hydrocyclones arranged in series to segment soil by particle size into distinct fractions. This segmentation allows parallel processing of different soil types, reducing total remediation time while the modular design keeps device complexity manageable.
Solution Approach 2:
The system performs preliminary separation of soil by particle size before the actual remediation process. This preliminary action categorizes soil into coarse, medium, and fine fractions that can be remediated at different rates, preventing time waste on uniformly treating all soil types.
3Ease of operation
If conventional devices remediate all soil regardless of contamination degree, then the process is simple, but the cost is high
Solution Approach 1:
The invention applies local quality by treating different soil fractions with different remediation intensities based on their specific contamination characteristics. Fine soil with high contamination receives intensive treatment, while coarse soil with lower contamination receives less treatment, optimizing resource allocation and reducing overall costs.
Solution Approach 2:
By segmenting soil into particle size fractions, the system enables differentiated remediation strategies for each fraction. This segmentation allows targeted treatment of highly contaminated fine soil while reducing or skipping treatment for less contaminated coarse soil, thereby lowering total remediation costs.
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 approach allows for intensive remediation of highly contaminated soil by particle size, reducing unnecessary remediation of less contaminated soil, thereby lowering costs and time while effectively meeting contamination standards, as demonstrated in the application to farm soil around smelters.
Implementation Method 1
a mill adapted to mix contaminated soil with water and to individualize the soil
Implementation Method 2
a screen adapted to separate the soil introduced from the mill into soil having given particle sizes
Implementation Method 3
a separator adapted to finely separate the soil having particle sizes of less than a given value by particle size from the soil having the given particle sizes separated through the screen
Implementation Method 4
multiple micro hydrocyclones which finely separates the contaminated soil with contaminants like heavy metals by using the multiple micro hydrocyclones in accordance with the contamination degrees of the soil by particle size
Implementation Method 5
a coagulating and settling unit adapted to coagulate and settle the process water for washing discharged from the filtering unit and a portion of the soil finely separated through the separator
Implementation Method 6
coagulate and settle the process water for washing discharged from the filtering unit and a portion of the soil finely separated through the separator
Implementation Method 7
the process water for washing-recycling unit is configured to absorb the contaminants inclusive of arsenic in the process water for washing onto Fe3+-modified activated carbon
Data Source
AI summary
The present invention relates to a system for remediating highly contaminated fine soil using multiple micro hydrocyclones that includes: a mill adapted to mix contaminated soil with water and to individualize the soil; a screen adapted to separate the soil introduced from the mill into soil having given particle sizes; a separator adapted to finely separate the soil having particle sizes of less than a given value by particle size from the soil having the given particle sizes separated through the screen; a remediating unit adapted to wash the finely separated soil introduced from the separator by particle size by means of process water for washing; and a filtering unit adapted to separately discharge the soil washed and introduced through the remediating unit and the process water for washing contained in the soil.