1. Chemical Spray Tower for Organic Waste Gas Treatment and Deodorization

This system leverages the solubility of pollutants in organic waste gases within the spray liquid or their chemical reactivity with substances in the spray liquid to transfer organic pollutants from the gas phase to the liquid phase. For acidic or alkaline organic waste gases, alkaline or acidic spray liquids can be employed respectively for neutralization and absorption. For instance, sodium hydroxide solution can be used to absorb carboxylic acids from acidic organic waste gases.

The spray tower is equipped with packing materials. As organic waste gases pass through the packing layer, the surface of the packing adsorbs some organic pollutants, thereby increasing the gas-liquid contact area and contact time, which enhances treatment efficiency. This system is effective in treating a variety of organic waste gases, achieving removal rates of up to 90% or more for pollutants that are highly water-soluble or readily react with the spray liquid.

Technical Advantages

• High treatment efficiency
• Broad applicability
• Simple operation
• High safety

Applicable Scenarios

• Suitable for various organic waste gases generated in workshops within industrial parks

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2. Activated Carbon Adsorption for VOC Waste Gas Treatment

Activated carbon adsorption equipment primarily utilizes the adsorptive properties of porous solid adsorbent activated carbon to effectively remove organic pollutants and odors from industrial waste gases. Activated carbon possesses a highly developed microporous structure and a vast specific surface area (typically ranging from 500 to 1500 m²/g), which allows it to adsorb VOC molecules into its pores via van der Waals forces without the need for chemical reactions.

Once the adsorption capacity is saturated, VOCs can be released through methods such as high-temperature steam desorption or vacuum desorption, thereby regenerating the activated carbon. This process also concentrates the waste gas for subsequent treatment, such as catalytic combustion. Adsorption systems often employ multi-stage series or parallel configurations, integrated with online monitoring systems to ensure continuous operation and automatic switching.

Technical Advantages

• Low initial investment and operational costs compared to combustion or biological methods, making it particularly suitable for small and medium-sized enterprises.
• High flexibility, as it can be used standalone or in combination with other technologies (e.g., adsorption-catalytic combustion, adsorption-condensation recovery) to handle waste gases of varying concentrations and compositions.
• No secondary pollution, with the regenerated activated carbon being reusable.
• Rapid system startup, ideal for intermittent production conditions.

Application Scenarios

• Paint spraying workshops
• Chemical and pharmaceutical industries
• Printing and packaging facilities
• Odor control in sewage treatment plants