Advanced Oxidation System for Foundry Sand Odor Treatment
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Solution Overview
Problem
Foundries face challenges in effectively treating offensive odors and toxic substances during the sand reclamation process due to high initial investment and operational costs of wet suppression systems, especially in processes like crushing, sieving, and transfer where emissions are dispersed without adequate local exhaust systems.
Innovation Solution
An advanced oxidation system comprising a spray device for hydrogen peroxide, a stirring device for mixing, an ultraviolet irradiation device to activate hydrogen peroxide, and a local exhaust system for collecting dust, which oxidatively decomposes odors and toxins in the sand reclamation process, reducing the need for extensive wet suppression systems across all processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a wet suppression system is installed in each process of sand reclamation, then the treatment effectiveness of offensive odors and toxic substances is improved, but the initial investment cost and operational cost are significantly increased
Solution Approach 1:
The patent combines multiple functions (odor treatment, toxic substance treatment, and dust removal) into a single integrated advanced oxidation system. The system uses a spray device to apply oxidizing agent, a stirring device to mix, and a local exhaust system to remove treated air, replacing the need for separate wet suppression systems in each process step.
Solution Approach 2:
The advanced oxidation system is designed to handle multiple types of emissions (offensive odors, toxic substances, and dust) simultaneously through a single system. The oxidizing agent generated by the system can treat various harmful substances, making the system universally applicable across different process stages without requiring separate specialized systems.
2Object-affected harmful factors
If a wet suppression system is installed in each process of sand reclamation, then the treatment effectiveness of offensive odors and toxic substances is improved, but the installation space requirement is significantly increased
Solution Approach 1:
The patent combines multiple functions (odor treatment, toxic substance treatment, and dust removal) into a single integrated advanced oxidation system. The system uses a spray device to apply oxidizing agent, a stirring device to mix, and a local exhaust system to remove treated air, replacing the need for separate wet suppression systems in each process step.
3Device complexity
If only a dust treatment system is provided in sand reclamation processes, then the system complexity is reduced, but offensive odors and toxic substances are not effectively treated
Solution Approach 1:
The patent changes the chemical parameters of the emissions by introducing an advanced oxidation system that generates strong oxidizing agents. The spray device applies oxidizing agent to the waste material, and the stirring device ensures thorough mixing, transforming the chemical composition to eliminate offensive odors and toxic substances while maintaining system simplicity.
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 system effectively decomposes offensive odors and toxic substances, improving workplace and residential area environments by reducing emissions by over 80% without the need for a separate suppression system in all processes, thereby lowering installation and maintenance costs.
Implementation Method 1
an ultraviolet irradiation device for activating the hydrogen peroxide mixed with the foundry waste to produce radicals
Implementation Method 2
a spray device for spraying a diluted solution of hydrogen peroxide onto foundry waste
Implementation Method 3
a stirring device for mixing the foundry waste with the diluted solution of hydrogen peroxide sprayed thereto
Implementation Method 4
a local exhaust system for collecting dust generated when the foundry waste is mixed with the hydrogen peroxide by the stirring device
Data Source
AI summary
The present invention provides an advanced oxidation system for the treatment of offensive odors and toxic substances of foundry waste, e.g., sand, and a treatment method using the same, which can effectively remove offensive odors and toxic substances produced during a sand reclamation process for reclamation of foundry waste. For this purpose, an advanced oxidation system for the treatment of offensive odors and toxic substances of foundry waste by implementing a spray device for spraying a diluted solution of hydrogen peroxide onto foundry waste; a stirring device for mixing the foundry waste with the diluted solution of hydrogen peroxide sprayed thereto; an ultraviolet irradiation device for activating the hydrogen peroxide mixed with the foundry waste to produce radicals; and a local exhaust system for collecting dust generated when the foundry waste is mixed with the hydrogen peroxide by the stirring device.