Introduction: Hebei Xianhe Environmental Protection Technology Co., Ltd., the first listed company in China's environmental monitoring instrument industry, undertook the national “urban air quality monitoring system project”; in 2000, it successfully developed China's first air quality monitoring system and passed the identification. After 10 years of continuous technological innovation, the first phase has a mature PM2.5 monitoring technology. The measuring principle of this instrument is based on the current mainstream technology of beta ray method, and the product performance has reached the level of similar foreign products.
The State Council recently released the newly revised "Ambient Air Quality Standard" and added "PM2.5" monitoring indicators. On March 5, Premier Wen Jiabao pointed out at the fifth session of the Eleventh National People's Congress that when it did a work report on the government, China will carry out monitoring of fine particles and other items in key regions such as the Beijing-Tianjin-Hebei region, the Yangtze River Delta and the Pearl River Delta as well as municipalities and provincial capitals this year. .

With the development of PM2.5 monitoring, how is the technical reserve and production capacity of domestic instruments? What is the next step in the development of air pollution monitoring technology? The author visited the first listed company in China's environmental monitoring instrument industry and the first company in China to achieve continuous local air quality automatic monitoring system - Hebei Xianhe Environmental Protection Technology Co., Ltd.

The particle monitoring research and the first air monitoring system in China have been talking about the development of domestic particulate monitoring. It is necessary to start with the development of China's first air quality monitoring system. In 1999, Xianhe Environmental Protection undertook the ninth five-year major equipment development plan project organized by the State Economic and Trade Commission and other departments—the project of urban air quality monitoring system; in 2000, Xianhe Environmental Protection successfully developed China’s first air quality with full independent intellectual property rights. The monitoring system passed the appraisal, and the product reached the international advanced level, filling the gap in the domestic technology. This includes PM10 monitoring particle monitoring instrument, equipped with different cutters to measure TSP, PM10, PM2.5.

With the successful development of China's first air quality monitoring system, environmental protection is the core technology of particulate monitoring. So far, there have been more than 10 years of technology accumulation. As of now, SST already has 1,000 air quality monitoring stations nationwide. The experience of particle monitoring equipment spreads across the rivers and rivers, and the product technology is improving day by day. This series of products won the second prize of national scientific and technological progress in 2007 and was awarded the national independent innovation product in 2009. In 2010, it passed the national environmental protection certification in the first batch. It is also the foundation of PM2.5 monitoring technology.

In 2003, the pioneering environmental protection and Japan Green Blue Co., Ltd. conducted technical cooperation, carried out product upgrades of the air quality monitoring system according to Japanese technical standards, reached the requirements of Japan's environmental monitoring and evaluation, and comprehensively improved the overall performance of the instrument.

PM2.5 monitoring began with the task of undertaking the national 863 project. Because of the technology and industrialization basis of particle monitoring, in 2002, Hebei Xianhe Environmental Protection Technology Co., Ltd., Tsinghua University, and Anhui Institute of Optics and Mechanics of the Chinese Academy of Sciences jointly undertook the 863 program “Atmospheric Fineness”. The topic of continuous particle monitoring technology and equipment plays an important role in enhancing the independent innovation capability of China's PM2.5 monitoring and giving full play to the leading role of high technology in leading the development of the monitoring business, and has thus emerged from the China road of PM2.5 monitoring. In this topic, the first to undertake the "Atmospheric fine particle sampling technology and equipment" project, independently developed a multi-channel PM2.5 sampler, is still used in Tsinghua University.

On December 13, 2005, the topic of “Continuous Monitoring Technology and Equipment for Atmospheric Fine Particles” passed the on-site inspection and acceptance of the “863” Program Office of Resources, Environment and Technology in Beijing. This project developed a three-channel PM2.5 chemical species sampler and a new seven-stage impact sampler with independent intellectual property rights, and conducted field operations in Beijing, Chongqing, and Ningbo, achieving a high level of technology. This topic also developed the first single-particle fine-particle time-of-flight mass spectrometer with independent intellectual property rights in China, which can measure aerosol particle size and major chemical components online.

In 2006, Xianhe Company and China National Environmental Monitoring Center cooperated to study the key technology of the beta ray particle monitoring system, the quality control program of the calibration film, solved many problems in the preparation of the calibration film, deformation and quality assurance, and ensured the automatic monitoring of particles. The accuracy of the instrument calibration film enables the key technology of the calibration film to have perfect quality assurance control.

Breaking through a number of key technologies and the first domestic certification of the cutter. After 10 years of continuous technological innovation, the first phase has mature PM2.5 monitoring technology. The measuring principle of this instrument is based on the current mainstream technology of β-ray method, and the product performance has been achieved. The level of similar foreign products.

Xianhe Environmental Protection is committed to the continuous research and technology accumulation of PM2.5 cutting efficiency. The newly developed feature-size PM2.5 cyclone cutter was certified by the Chinese Center for Disease Control and Prevention in December 2011 and is the new standard HJ618-2011 Ambient Air. The PM10 and PM2.5 Determination Gravimetric Method was the first in China to be certified and solved key technical issues such as cutting particle size and geometric standard deviation of the trapping efficiency. It can accurately capture PM2.5 fine particles.

The company also achieved a number of breakthroughs in key technologies. The intelligent heating system has solved the problem of the influence of humidity on particulate matter measurement. The resolution of key technologies such as filter paper strip, calibration film, and constant current system has ensured the accuracy of measurement.

Study the mechanism of ash generation and provide decision support for scientific mitigation. The effect of ash on the extinction of PM2.5 in the atmosphere, meteorological factors are external factors, and atmospheric combined pollution is the main factor. Due to the rapid expansion of the economic scale and the acceleration of urbanization, atmospheric composite pollution in the urban agglomerations and large cities has become increasingly serious. In particular, the integration of regional economies and the transfer of pollutants through the atmospheric circulation between cities have formed a regional Contamination is highly correlated with regional pollution. Therefore, the establishment of regional and composite air pollution monitoring systems and the development of targeted air pollution prevention and control strategies based on data analysis are of great significance to the continuous improvement of atmospheric environmental quality.

Based on this, Xianhe Environmental Protection began to conduct regional air pollution monitoring and early warning research in 2009, and put forward a targeted comprehensive solution for air pollution monitoring. The solution consists of an air quality monitoring instrument and a software analysis system. The air quality monitoring instrument is the basic hardware. Through reasonable deployment, scientifically setting monitoring parameters, and networking with pollution source online instruments, relevant data are transmitted to the software analysis system, with the aid of pollution diffusion. , forecasting and other models, and finally come to the analysis results based on monitoring data, to provide support for leadership decisions.

The system monitors the mechanism of ash generation through the monitoring of complex pollutants in the ambient air, finds out the main influencing factors, controls the particulate pollution in ambient air particles from the source, and proposes pollution prevention measures for atmospheric composite pollutants based on data model analysis. , can achieve the following main effects:

1. It is possible to publish air quality, provide real-time release of city air quality, district air quality, and site air quality. You can view the pollution level distribution and trend trend of the daily mean concentration of certain monitoring parameters and evaluate the pollution situation in real time and accurately.

2. It can carry out forecast and early warning of pollution events. Air pollution is the result of the joint action of pollutants with meteorological conditions and landforms. The system can combine urban pollution source emission conditions, topographic features, and meteorological conditions to predict air pollution and pollution in urban areas. Analyze the trends and trends of pollution, accurately alert for serious pollution incidents, and help to take preventive measures in advance to reduce the generation of serious pollution.

3. Quantitatively assess the source of pollutants in the target area, conduct real-time analysis of the source of the pollution, refine the spatial and temporal distribution of the emission sources, identify the main factors causing the pollution, and calculate the mutual transportation volume in different regions. On the one hand, the relative proportions of contributions from local sources and external sources can be determined, and it is convenient to propose suggestions and plans for macro control of regional joint defense and control. On the other hand, it can conduct traceability of pollution sources, lock polluting enterprises according to the chemical analysis of pollution components, and promote control of polluting enterprises, control them from the source, and increase the pertinence of pollution control.

4. Evaluate the effectiveness of emission reduction, rely on monitoring data, provide comparative analysis before and after emission reduction, evaluate the effect of emission reduction, and achieve a quantitative assessment of the effects of atmospheric management; Meteorological parameters and pollution parameters that can affect visibility Performing a correlation analysis helps to study the causes of the deterioration of visibility, and summarizes the results of governance and continuous improvement.

Towards the advanced atmospheric composite pollution monitoring technology, providing technical support for environmental monitoring, aiming at the commanding heights of environmental monitoring technology, participating in international environmental monitoring and high-tech competition, striving to achieve simultaneous development, adhering to strategic, forward-looking and forward-looking, is the pioneer environmental protection research and development aims. As a national innovative enterprise and a key high-tech enterprise of the National Torch Plan, it has advanced environmental protection with an industry-leading technical background and positions product research and development in the high-tech R&D of the national environmental strategy.

In 2011, Xunhe Environmental Co., Ltd. undertook 5 national projects and served as the host of two national projects. It also cooperated with the Chinese Academy of Sciences, Tsinghua University, Fudan University, Shanghai Jiaotong University, and the Chinese Academy of Environmental Sciences and many other top domestic universities and research institutes. Jointly assuming the national issues, the company successfully laid the leading position in the company's "12th Five-Year Plan" period in the strategic layout of national environmental protection instrument R&D and industrialization.

Pioneer Environmental Protection attaches great importance to international scientific and technological exchanges and cooperation. It focuses on the research and development of cutting-edge technologies and focuses on the integrated application and industrialization demonstration of international advanced monitoring technologies. Currently, it has established cooperation with relevant companies in various countries and regions and promotes global scope. Strategic cooperation in the field of atmospheric monitoring.

In 2008, Xianhe Environmental Protection signed an agreement with Ecotech Australia, which has 30 years experience in the production of atmospheric monitoring systems, and began a global and in-depth strategic cooperation. Relying on high-quality products, Xianhe Environmental Protection successfully won the bid in 2008 National Pilot Station for Pollution Reduction Special Rural Station and the first batch of quality control station projects organized by the National Environmental Monitoring Center.

In 2009, the company cooperated with Metone Corporation, a world-renowned particle monitoring instrument manufacturer, and represented its PM10 and PM2.5 monitors. This not only marks the establishment of a cooperative relationship between the two companies, but also represents an international high-end environmental monitoring instrument. The arrival of the era of localized quality service.

In 2011, Xianhe, as the chairing unit, and Ecotech Co., Ltd. jointly undertook the task of “automatic pollution monitoring and early warning system for atmospheric air pollution”. This project is the “12. 5” national international science and technology cooperation project. The main goal is to introduce high-precision background air quality. Monitoring instrument technology, the formation of its own trace of automatic pollution monitoring equipment; the introduction of greenhouse gas monitoring technology and turbidimeter monitoring technology, and completed the integration of ash monitoring equipment, its technical level and international advanced technology synchronization. The development of the National Special Project for International Scientific and Technological Cooperation has enabled Xianhe Environmental Protection to enter the national innovation platform for international scientific and technological exchanges, and has also promoted the development of the company's technical cooperation to a higher level.

In conjunction with the development of PM2.5 monitoring work, Xianhe Environmental Protection actively participated in the compilation of the "Ambient Air PM2.5, CO, O3 Monitoring Technical Specifications" standard prepared by the station's quality inspection room, and mainly assumed the "ambient air PM2.5 continuous automatic The establishment of monitoring system installation and acceptance technical specifications was involved in the preparation of the "ambient air PM2.5 continuous automatic monitoring system technical requirements and detection methods" and provided technical support for the development of PM2.5 monitoring work.

Fundraising Project Fundamental Construction, Laying a Foundation for Capacity Expansion Entering the Xianhe Environmental Protection Industrial Park, you can see that a large number of buildings have risen. It is said that this is a listed investment and construction project. Among them, the main body of the new 21,600-square-meter integrated workshop office area has been capped, and part of the workshop's steel framework has been completed. The office area is expected to be put into use in May 2012, and it can be fully put into use in July, and an annual output value of 1.5 billion yuan can be realized after the company reaches production. The expansion of production capacity laid the foundation.

According to reports, the current production facilities in Xianhe have an annual production capacity of 500 sets of air monitoring systems, and the annual production of particulate matter monitors is more than 500 sets. After the new comprehensive workshop is put into use, the annual production capacity will meet the monitoring of the next 5-10 years. Capacity building needs.

The monitoring of PM2.5 is only a means. The key is to monitor it and call on the whole society to act immediately to curb air pollution. This "curative" approach has a long way to go. Xianhe Environmental Protection is committed to the forward-looking research of atmospheric monitoring technology, using PM2.5 monitoring as a new starting point, providing excellent equipment support and strong decision-making support for China's air quality improvement, and making its own way for the public to breathe cleaner air contribution.