As a city at the mouth of the Yellow River, Dongying City in Shandong Province shoulders an important historical mission in the ecological protection of the Yellow River Basin.
In order to protect the ecological beauty of the last stop of the Yellow River, Dongying continues to promote precise gas control, systematic water control, comprehensive soil control, and standardized waste control.
In 2019, Dongying ranked first in the evaluation of the effectiveness of pollution prevention and control battles in Shandong Province. In 2020, the province's comprehensive evaluation of the city's ecological environment scores tied for the first in Shandong Province.
"In Dongying, it is not easy to be a little green!" said Lu Yufeng, director of the Landscaping Center of Dongying District, Dongying City. Dongying District, which was once a land of retreat from the sea, is mainly composed of saline-alkaline soil, with an average salt content of more than 17‰ and green plants. The growth environment is harsh.
"Every year you plant trees but you don't see trees, and there are more electric poles than trees." This place was once known as the "Great Northern Wilderness" of Shandong.
In order to "safe home" for the green plants, Dongying District implemented saline-alkali soil improvement in accordance with local conditions, and adopted large-scale replacement of green soil in saline-alkali areas with low survival rates to better and quickly change the soil salinity status and create a Land conditions conducive to the growth of landscaping plants.
Also, a complete watering system is formed by installing water supply pipelines, sprinkler irrigation and water intake valves to ensure water pressure for greening and increase the survival rate of seedlings.
Driving on Lushan Road, which was opened to traffic this year, the scenery along the route is dizzying.
In the past three years, Dongying District has constructed and renovated 53 parks and amusement parks, including Gengjing Park and Cultural Park, building and renovating more than 9.55 million square meters of green area, and adding more than 8.28 million square meters of green area.
According to Lu Yufeng, Dongying District, relying on roads, wetlands, water systems, and green spaces, has invested more than 3.5 billion yuan in the past five years, implemented 30 high-standard landscaping and landscape projects, constructed 71 green roads, upgraded 78 tree-lined roads, etc., and strived to create integrated safety Travel, leisure and entertainment are integrated, unique "urban landscape around residents".
Walking in the Guangli River Wetland Park in Dongying City, the blue sky and green space contrast each other.
What is surprising is that in this greenery, lake and water, there is a crude oil production unit with an annual output of more than 100,000 tons-Sinopec Shengli Oilfield Xianhe Oil Production Plant Liuhu Oil Production Management Zone.
“Oil extraction in the park is too demanding, and there can be no trace of oil pollution on the polished rod.” Facing the high environmental protection standards, Wang Dehua, who has worked in Shengli Oilfield for 31 years, has adapted to it for a while.
"It is not to build the oil production management area into a tourist area, but to use the high-standard green oil production of the tourist area." Wang Dehua said, they focused on the construction of a management area of "underground efficient oil extraction, sightseeing and tourism above ground", and promoted quality improvement and standard improvement. Refresh the background color of the green development of Shengli Oilfield.
Recently, as the 38th photovoltaic power station of Shengli Oilfield was completed and put into operation in Luyuan Management Area of Lusheng Company, the single-day power generation of the oilfield photovoltaic power generation project reached 156,000 kWh, which is equivalent to the daily power consumption of 1,500 pumping units. Save 19.27 tons of standard coal.
"The difficulty in developing new energy projects in the oilfield is to build a'green energy' model suitable for oil and gas production scenarios." said Li Jingying, manager of the Shengli Oilfield New Energy Development Center. The scene has multiple new energy modes such as the efficient utilization mode of waste heat resources in the station and warehouse, the combined supply mode of geothermal heating and cooling in the production and office areas of the mining area, and the "light and heat +" alternative mode of heat for oil and gas production.
Annual green power generation of 120 million kWh and waste heat utilization of 2.22 million GJ... As one of my country's important petroleum industry bases, Shengli Oilfield, a major oil and gas producer, is undergoing a new energy transition.
In the "green upgrade", Shengli Oilfield plans to reach 20% of the direct energy consumption by the end of the "14th Five-Year Plan" period.
"An abnormal environmental quality is detected near the intersection of Dongba Road and Huanghe Road, please go to the site for investigation by law enforcement colleagues." The staff of Dongying Economic and Technological Development Zone Bureau (hereinafter referred to as "Development Zone Bureau") of Dongying City Ecological Environment Bureau according to Lidar monitoring According to the situation, the area with high atmospheric particulate matter value will be checked and deployed, and the polluted area will be discovered as soon as possible.
In recent years, the Development and Zone Bureau has continuously strengthened the fine management of pollution prevention and control, using a variety of environmental supervision "black technologies" to monitor environmental quality, accurately pinpoint sources of pollution, and weave a dense and firm network for the prevention and control of ecological environmental pollution.
"The radar system monitors particulate matter in an area with an optical path radius of 5 kilometers through a plane scan every 60 minutes, analyzes the cause of abnormal points and locates the area where the main pollution source is located. The use of particulate matter lidar equipment will cover the air in the area. The pollution source has a panoramic view, which improves the efficiency of pollution control." Yin Yanfeng of the Development Zone Bureau introduced.
In addition to the particulate matter lidar, the Development Zone Bureau has also introduced a navigation monitoring vehicle equipped with online volatile organic compound analyzers, vehicle-mounted atmospheric sampling systems and other equipment.
"The data is rising, this road is going slower." The staff of the Development and Division Bureau were in the navigation car, staring at the map and data displayed on the computer screen. When they drove to the vicinity of an enterprise, the map trajectory suddenly changed from green. It is light yellow, and the data shows that the concentration of benzene and xylene in the air is abnormally high.
This navigation monitoring vehicle can analyze a variety of organic pollutants such as benzene, alkanes, olefins, etc., to clarify the composition and concentration of the pollutants.
Yin Yanfeng said: “This navigation monitoring vehicle can complete the analysis and detection of multi-component mixed gas in a short time through real-time sampling and simultaneous analysis of air, quickly presenting a picture of the pollution situation, locking problem areas and problem points, and providing information for law enforcement. Strong data support."
Through the application of a series of ecological environmental supervision "black technology", the intelligent level of environmental supervision in Dongying Economic and Technological Development Zone has been continuously improved, helping the blue sky defense war from rough to fine, from plane to three-dimensional, from quantitative change to qualitative change.
"One drainage pipe for a company does not affect each other, and the monitoring is more accurate." In Kangda Environmental Water Co., Ltd., located in Guangrao Economic Development Zone, Dongying City, following the direction of Huang Haijun, deputy director of Le'an Sub-district Office, the reporter looked at The production wastewater from different plant areas is continuously flowing into the inflow buffer tank through 8 water pipelines of varying thickness, where it is treated and discharged up to the standard.
"Each pipeline is equipped with online facilities at the beginning and end, and sampling ports at the end. Samples are monitored from time to time. For the inlet pipes that exceed the discharge standards, the valves will be closed as soon as possible and traced back to the source enterprise." Huang Haijun said Not only that, the inlet pipe is also equipped with a flow meter. Once a company is found to have "reduced" the pollution, the environmental protection department will immediately contact the company for inquiries. This can effectively prevent the company from setting up a secret pipe to discharge the sewage and quickly realize the sewage Traceability management, water quality monitoring and emergency response.
Huang Haijun said that the local area is also stepping up the construction of more than 10 kilometers of above-ground integrated pipe gallery. By incorporating the "one enterprise, one pipe" emergency drainage project into the integrated pipe gallery, supporting the construction of a smart monitoring system, realizing dynamic supervision of all drainage enterprises in the park , Trace back to the source, allowing industrial wastewater management to realize a fundamental transformation from preliminary monitoring to smart control, and from end treatment to source treatment.
(Economic Daily News reporter Wang Jinhu)