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In recent years, with the worsening of air quality, the frequency of haze weather has been increasing significantly. When people are not adequately protected, this harmful air can enter the body and cause a variety of health issues, including respiratory diseases, cardiovascular problems, and even affect the blood, reproductive systems, and more. Common conditions such as pharyngitis, emphysema, asthma, rhinitis, and bronchitis can be triggered or worsened by prolonged exposure to smog. Long-term exposure may also lead to serious illnesses like lung cancer and myocardial ischemia.
Schools are particularly vulnerable, as children—still in their developmental stages—are especially susceptible to the harmful effects of smog. The physical and mental well-being of both students and staff is at risk due to poor air quality on campus. Air pollution in educational environments not only affects daily life but also hinders learning. It is essential to create a safe, clean, and healthy space for students, ensuring that they can study and grow in an environment free from harmful pollutants. Addressing campus air quality is urgent, and effective measures must be taken to eliminate smog and improve the atmosphere.
**I. Campus Smog Management Implementation Plan**
The program 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)." This system transforms water into ecological-grade negative ions, effectively settling smog particles and creating a clean-air dome over the campus. This provides a healthier living and learning environment for teachers and students alike.
**1. System Overview**
The low-altitude smog settlement system consists of 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 air quality signals from the PM2.5 monitor to activate or deactivate the smog settlement group. It also generates detailed reports on air quality and energy consumption before, during, and after operation. Remote monitoring allows higher authorities and maintenance centers to track the system's performance in real time.
The system is fully automated but also supports manual settings and remote control. For instance, it can be programmed to spray 10 minutes before class begins and stop during class to ensure students enjoy clean air while resting, exercising, or socializing. In good weather, the system automatically lowers itself into a dormant state.
**2. System Components**
1) **Smog Settlement Group**
This large-scale remote spraying device uses high-pressure technology to atomize water into micro-mist particles ranging from 10 to 150 micrometers. A powerful fan then sprays the mist over distances of 30 to 200 meters. The machine can rotate up to 180 degrees and adjust its angle between -10 and 45 degrees, covering up to 100,000 square meters. The mist is further broken down by wind, reaching a secondary atomization size of 1 micrometer.
For campus use, the 80/100-meter model is typically selected based on the playground area and dimensions. Smaller models like 60/50 are suitable for smaller spaces, while larger models are recommended only for special cases due to higher energy consumption.
During smog events, dust mites float near the ground due to dry and hot conditions. The smog settlement machine sprays a large amount of fine mist, increasing humidity and lowering temperature. The mist adsorbs dust particles, causing them to condense and settle to the ground. A non-toxic surfactant and disinfectant are added to the water to help suppress viruses and reduce dust mites.
2) **PM2.5 Dust Monitor**
The system uses an imported PM2.5 dust monitor capable of real-time monitoring of particles ranging from 1 to 150 micrometers. It wirelessly transmits data to the local control system, which then activates or deactivates the smog settlement group accordingly. The monitor can be fixed or mobile, and even operated via drone for enhanced flexibility.
3) **Data Acquisition and Analysis System**
This system serves as the technical backbone of the entire smog settlement system. It receives and processes data from the PM2.5 monitor, stores it, and forwards it to the local control system. Reports on air quality, energy consumption, and system performance can be generated according to user settings.
4) **Local Automation Control and Remote Monitoring Systems**
The local automation control system acts as the command center, managing electrical control, automation, and equipment status monitoring. The remote monitoring system enables higher authorities to access real-time data and video, print reports, and manage the system remotely through wireless transmission or the internet.
All system operations and component statuses are connected to the manufacturer’s unified monitoring center, ensuring reliable after-sales support and smooth system operation.
**3. Key Advantages of the System**
1) Micro-mist particles up to 1μm, highly efficient in capturing PM2.5-PM10 particulates.
2) Excellent regional smog settlement effect, creating a clean air environment.
3) Breaking static wind patterns and promoting air circulation.
4) Transporting large amounts of water at low altitude to encourage dust settling.
5) Reducing surface temperature and eliminating inversion layers that trap pollutants.
6) Multiple control methods, including full automation, manual intervention, and remote control.
7) Real-time data reporting and remote transmission capabilities.
8) Remote monitoring of system status.
9) Unified after-sales service support for stable operation.
**II. Demonstration Case – Ma Chikou Middle School**
The Ma Chikou Middle School Outdoor Haze Treatment Project involved the deployment of a trailer-mounted 80m-range smog settlement machine for field testing. The British CASELLA company and China Huashen Group Beijing Testing Center participated in the evaluation. The results showed that the fine water mist application was highly effective, energy-efficient, and quick to implement, offering a cost-effective alternative to traditional greenhouse-style solutions.
This system helps improve outdoor sports environments, supporting campus football and other activities. In the Beijing-Tianjin-Hebei region, where smog is frequent, this technology plays a crucial role in protecting students' health.
A specialized version of the smog settlement machine was developed for school football fields. Installed behind the goalposts, the unit features a spherical cover resembling a football, making it visually appealing while protecting the equipment and reducing noise. An LCD screen is mounted on the tower for remote and live football instruction, allowing easy control via remote. The data platform collects real-time air quality data, automatically controlling the spray system to maintain optimal air conditions.
