Around water, gas, soil, ecology, pollution sources and other factors, more than 28,000 monitoring points have been built in Sichuan, and the monitoring of ecological environment is more ＂alert and cl

"Chengdu decided to start the yellow warning of ozone heavy pollution weather at 0: 00 on March 6, 2023 …" On March 5, the day before the warning started, Chengdu issued the warning information of heavy pollution weather. By taking emergency control measures, Chengdu regained an excellent day-March 6, the air quality was good. Accurate and efficient early warning relies on the ecological environment monitoring network.

At present, around water, gas, soil, ecology, pollution sources and other factors, Sichuan has built more than 28,000 monitoring points, achieving full coverage of monitoring points in cities, counties, cities and major tributaries, with basically complete elements and more "hearing and seeing" in ecological environment monitoring.

Four transformations

● The transition from manual to automatic.

The number of automatic stations in our province has increased from 296 to 2,634, an increase of nearly 8 times compared with 2015, basically achieving full coverage of urban environmental air and surface water quality automatic stations in cities and counties of the province.

● Change from extensive to precise.

In terms of ambient air quality, county-level cities have monitored three indicators every month for five days, four times a day and six indicators every time at the beginning of the Thirteenth Five-Year Plan.

In terms of water environmental quality, it has been monitored once a month from the beginning of the Thirteenth Five-Year Plan to six times a day now, and 109 items of water quality in drinking water sources have been fully monitored and analyzed.

In the aspect of coordination of measurement and management, high-tech means such as radar rover and unmanned aerial vehicle are used to carry out mobile navigation of pollutants, accurately draw "pollution map trajectory" and quickly and accurately lock pollution sources.

● Transition from decentralized closure to integrated linkage.

Eco-environmental departments and meteorological departments should cooperate with each other, establish a data sharing mechanism for eco-environmental monitoring, and gradually realize the effective integration, interconnection and mutual sharing of data on environmental quality, pollution sources and ecological quality monitoring, so as to evaluate the eco-environmental quality more objectively and predict the development trend more accurately.

● Change from status quo monitoring to comprehensive prediction and early warning.

At the beginning of the "Thirteenth Five-Year Plan", our province did not have the ability to forecast water quality. After five years of construction, it can now forecast the fine cross-section of key river basins in the next three days and the trend water quality forecast in the next seven days.

How to monitor? Build a network to achieve full coverage of monitoring points in cities, counties, cities and major tributaries.

In the Key Laboratory of Atmospheric Research of Super Station on the sixth floor of Chengdu Research Institute of Environmental Protection, a large number of monitoring data such as inorganic elements, carbon components and VOCs are displayed here on a big screen. These monitoring data come from around-the-clock monitoring instruments and high-performance computers that operate continuously in the laboratory.

"This is the atmospheric particulate matter and photochemical sub-station, which is what our major usually calls a super station." Rowena, an engineer from Chengdu Academy of Environmental Sciences, told the reporter. Following Rowena to the roof of the laboratory, the reporter saw the sampling tube of the monitoring instrument. Rowena introduced that the sampling tube will sample the air like a needle, and then deliver it to the monitoring instrument for analysis after successful sampling. "These sampling and monitoring equipment are open all year round, which not only realizes real-time monitoring of 6 parameters of ambient air, but also realizes monitoring and analysis of more than 150 air pollutant indicators including volatile organic compounds." Rowena said.

In the laboratory, the reporter found that many monitoring indicators were recorded in detail by time or in the form of curves or images. What help do these images and curves have to air pollution prevention and control?

Lei Yi, deputy director of the Department of Ecology and Environment, gave the answer: these curves and images with different colors actually hide various "signs" of air pollution changes, and the causes of air pollution can be interpreted from them, which is also the difference between super stations and conventional automatic monitoring stations. According to Lei Yi, the super station can capture more and smaller pollution factors, including more than 150 indicators. By "blood test" for the atmosphere, the "cause" of air pollution can be clearly identified, so as to "prescribe the right medicine" and achieve refined control.

Without the strong support of monitoring data, the "foundation" of the battle against pollution will be unstable, and the super station is only a microcosm of the construction of Sichuan ecological environment monitoring network. The reporter learned that around water, gas, soil, ecology, pollution sources and other factors, Sichuan has built more than 28,000 monitoring points. Among them, there are nearly 25,000 environmental quality monitoring points, more than 100 ecological quality monitoring points and more than 3,000 pollution source monitoring points. Basically completed the three-year goal and task of the province’s ecological environment monitoring network construction, and achieved full coverage of monitoring points in cities, counties, cities and major tributaries, with basically complete elements.

What’s the effect? Four changes to make ecological environment monitoring smarter and more efficient.

The construction of ecological environment monitoring network makes ecological environment monitoring more intelligent and efficient.

"The first is the transition from manual to automatic." According to the relevant person in charge of the Monitoring Department of the Department of Ecology and Environment, after years of construction, the number of automatic stations in our province has increased from 296 to 2,634, an increase of nearly 8 times compared with 2015, basically achieving full coverage of urban environmental air and surface water quality automatic stations in cities and counties of the province. Taking pollution source monitoring as an example, the first and second batches of online monitoring and control systems for pollution sources were piloted in 11 cities to achieve a breakthrough in the new monitoring method of "electricity consumption monitoring". "By remotely querying the electricity consumption of enterprises, we can know whether the pollution control facilities of enterprises are operating normally, and the monitoring tentacles are further extended." The person in charge said.

Realize the transformation from extensive to accurate. "At present, the environmental monitoring method has changed from the previous situation of extensive, low frequency, few indicators and single means." According to the above-mentioned person in charge, in terms of ambient air quality, county-level cities have monitored three indicators for five days a month, four times a day and each time at the beginning of the "Thirteenth Five-Year Plan", and now they have monitored once an hour, monitoring six indicators each time; In terms of water environmental quality, from monitoring once a month at the beginning of the "Thirteenth Five-Year Plan" to monitoring six times a day now, 109 items of water quality in drinking water sources have been fully monitored and analyzed, so that ordinary people can drink clean water and feel at ease; In the aspect of coordination of measurement and management, high-tech means such as radar rover and unmanned aerial vehicle are also used to carry out mobile navigation of pollutants, accurately draw "pollution map trajectory", quickly and accurately lock pollution sources, and make environmental law enforcement targeted.

Realize the transformation from decentralized closure to integrated linkage. The reporter learned that at present, the ecological and environmental departments and meteorological departments have achieved synergy and linkage, established a data sharing mechanism for ecological environment monitoring, and gradually realized effective integration, interconnection and mutual sharing of data such as environmental quality, pollution sources and ecological quality monitoring, so as to evaluate the ecological environment quality more objectively and predict the development trend more accurately. In 2022 alone, the eco-environmental department held 23 consultations with the meteorological department and issued 15 warnings of heavy pollution.

The transition from current situation monitoring to comprehensive prediction and early warning. According to the relevant person in charge of the Monitoring Department of the Department of Ecology and Environment, at the beginning of the Thirteenth Five-Year Plan, our province did not have the ability to forecast water quality. After five years of construction, it is now possible to forecast the refinement of key river basin sections in the next three days and the trend water quality forecast in the next seven days. "It can effectively prevent and control water pollution emergencies and minimize possible losses." The person in charge said. (Reporter Tian Chengchen)

related news

Seven enterprises were selected into the list of provincial benchmark enterprises for energy saving and carbon reduction in 2022.

On March 23, the Ministry of Economy and Information Technology announced the list of provincial-level benchmark enterprises for energy saving and carbon reduction in 2022, and seven enterprises from cement, electrolytic aluminum, chemical industry, steel, ceramics and other industries were selected.

The relevant person in charge of the Department of Economics and Information Technology said that the above industries are high energy-consuming industries, and the energy efficiency level of the selected benchmark enterprises is better than the industry level by increasing energy conservation and carbon reduction in the industrial field. Taking Bazhong CONCH Co., Ltd. as an example, the company has spared no effort in environmental protection investment, persistently treating the source, reducing emissions, reducing consumption, suppressing dust, reducing noise and increasing green, and actively trying the application of new materials, new processes and new technologies in traditional fields, which has changed the production face of the traditional cement industry of "it’s cloudy in sunny days and muddy in rainy days".

Sichuan has set a goal that by 2025, the production capacity of key industries in the industrial sector will reach the benchmark level by more than 30%. The relevant person in charge of the Department of Economic and Information Technology said that relying on benchmarking activities, cities (states) should benchmark advanced practices and experiences, and guide enterprises in key areas to carry out energy-saving and carbon-reducing technological transformation in a scientific and orderly manner and promote energy efficiency. All benchmark enterprises for energy conservation and carbon reduction should actively play a leading role in demonstration, consolidate their achievements, continuously improve the level of energy conservation and carbon reduction, drive the low-carbon transformation and high-quality development of the whole industry, and help realize the peak carbon dioxide emissions in the industrial field as scheduled.

Previously, the Ministry of Industry and Information Technology, the National Development and Reform Commission and the State Administration of Markets jointly released the list of energy efficiency "leaders" enterprises in key energy-using industries in 2022, and two of the seven provincial-level benchmark enterprises in Sichuan were on the list. (Reporter Yan Minfang)