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In recent years, as air quality has worsened, the frequency of haze events has increased significantly. These harmful particles can enter the human body without proper protection, leading to a range of health issues such as respiratory diseases, cardiovascular problems, and even impacts on the blood, reproductive systems, and more. Common conditions include pharyngitis, emphysema, asthma, rhinitis, bronchitis, and other inflammatory diseases. Long-term exposure to polluted air can also increase the risk of lung cancer and heart-related problems like myocardial ischemia.
For schools, the impact of smog is especially concerning for children who are still developing. It not only affects their physical health but also poses risks to the well-being of teachers and staff. Poor air quality in school environments can disrupt students' daily lives and learning experiences. Creating a safe, clean, and healthy environment for students is essential, and it requires a systematic, effective, and comprehensive approach to improve campus air quality. Addressing the issue of smog in educational institutions is now urgent and necessary.
**I. Campus Smog Management Implementation Plan**
This initiative utilizes national invention patent technology, "Low-altitude Smog Settlement System and Method in Campus Area (ZL201410226001.8)" and utility model equipment, "Low-altitude Smog Sedimentation Device (ZL201420273203.3)." The system transforms water into ecological-grade negative ions, effectively settling smog particles and creating a clean-air dome over the campus. This ensures a healthier living and learning environment for both students and staff.
**1. System Overview**
The low-altitude smog settlement system consists of several key components: a smog settlement group, a PM2.5 dust monitor, a data acquisition and analysis system, a local automation control system, and a remote monitoring system. The entire system operates automatically, using signals from the PM2.5 monitor to trigger or stop the operation of the smog settlement group. It also generates detailed reports on air quality and energy usage before, during, and after operation. Higher authorities and maintenance centers can remotely monitor the system's performance.
The system is fully automated but allows manual settings and remote control. For instance, it can be programmed to spray 10 minutes before class begins and stop during class time, ensuring students enjoy clean air while resting, exercising, or playing. In good weather, the system retracts and enters a standby mode.
**2. System Components**
1) **Fog Settlement Group**
The smog settlement machine uses high-pressure technology to atomize water into micro-mist particles ranging from 10 to 150 micrometers, which are then sprayed over long distances using a large fan. The spray range extends from 30 to 200 meters, with a swing angle of up to 180° and vertical adjustment from -10° to 45°. The theoretical coverage can reach up to 100,000 square meters. The mist breaks down further in the wind, reaching particle sizes as small as 1 micrometer.
The project selects an 80/100-meter model to manage dust in the campus environment, with smaller models suitable for smaller areas and larger ones used only when necessary due to higher energy consumption. During smog events, the system sprays fine mist to increase humidity and lower temperatures, helping dust settle quickly. A non-toxic surfactant and disinfectant are added to enhance the cleaning effect and suppress airborne viruses.
2) **PM2.5 Dust Monitor**
The system uses an imported PM2.5 dust monitor capable of real-time detection of particles between 1 and 150 micrometers. It wirelessly transmits data to the local control system, which activates or stops the fog settlement group accordingly. The monitor can be fixed or mobile, and even operated via a drone for better coverage.
3) **Data Acquisition and Analysis System**
This system serves as the technical backbone of the entire setup. It collects, analyzes, stores, and forwards data from the monitor to the local control system. It also generates reports on air quality, energy use, and system performance based on user-defined settings.
4) **Local Automation Control System & Remote Monitoring System**
The local automation system acts as the command center, handling electrical control, automation, and equipment status monitoring. The remote monitoring system allows higher management to access real-time data and video feeds, print reports, and ensure seamless operation through wireless or internet connections.
All system statuses are connected to the manufacturer’s unified monitoring center, ensuring reliable after-sales support and stable system performance.
**3. Key Advantages of the System**
- Micro-mist particles as small as 1μm for highly efficient PM2.5 and PM10 removal
- Excellent regional smog settlement effect, creating a clean air environment
- Breaks static wind patterns and creates natural airflow
- Low-altitude water mist promotes dust sedimentation
- Reduces surface temperature and eliminates inversion layers
- Offers multiple control options: automatic, manual, and remote
- Generates detailed reports and supports remote data transmission
- Enables remote monitoring of system performance
- Backed by a centralized after-sales service center for reliable support
**II. Demonstration Case – Machikou Middle School**
Machikou Middle School implemented an outdoor smog treatment project using a trailer-mounted 80-meter-range smog settlement machine. The British CASELLA company and Beijing Testing Center of China Huashen Group participated in field testing. Results showed that the fine water mist method was effective, energy-efficient, and quick to implement, offering a cost-effective alternative to traditional greenhouse-style solutions.
The project also supported outdoor sports, particularly football, by installing a specialized smog settlement machine near the goal. The unit was enclosed in a spherical cover resembling a football, enhancing aesthetics while protecting the equipment and reducing noise. An LCD screen mounted on the tower enabled remote and live football teaching, making it easy to control via a remote.
The data platform collects real-time air quality data and automatically controls the spray system, ensuring optimal air conditions at all times.