Qingyuan City Waste Gas Treatment Case

In a precision manufacturing park in Qingyuan City, we undertook the centralized waste gas treatment of the central workshop and multiple production lines, with a total treatment scale of 1,500 m³/h. The system design is based on the integrated process of "wet scrubbing + plasma deep oxidation + biological filter", which can efficiently remove complex pollutants such as VOCs and ammonia sulfide, with a comprehensive removal rate of ≥95%, stably meeting the first-level standard of Table 2 of the "Comprehensive Emission Standard of Air Pollutants" (GB 16297-1996), and achieving the goal of "full process emission control and zero secondary pollution".

Project Technology Overview

Wet washing pretreatment: using a two-stage spray tower, using a combination of alkali solution and flocculant formula, initially remove dust and acidic gases, and reduce the subsequent plasma load;

Plasma deep oxidation: introducing non-thermal plasma discharge technology, generating highly active free radicals at room temperature, cracking complex organic molecules;

The reactor is designed as a multi-stage discharge chamber to ensure that the airflow reacts evenly in different energy level intervals and improves the treatment stability;

Biofilter antibacterial adsorption: after plasma treatment, the remaining trace biodegradable organic matter enters the biofilter bed;

Functional microbial communities are attached to the multi-layer filter material (ceramsite, biological filler), and deep purification and odor removal are completed under aerobic conditions;

Intelligent operation and maintenance: online monitoring of key parameters such as air volume, concentration, pressure difference, etc., and real-time adjustment of washing cycle, discharge power and biobed aeration through PLC+remote cloud platform;

The process of this project combines physical, chemical, plasma and biological multiple treatment mechanisms, which not only greatly improves the removal efficiency of VOCs and odorous substances, but also realizes low energy consumption (power consumption ≤ 1.2 kWh/m³), low noise operation, and reduces the floor space by 20% compared with traditional catalytic/adsorption systems. Since its commissioning, the system has been stable in operation and easy to maintain, providing a solid guarantee for the optimization of the atmospheric environment quality in Qingyuan City.