Gangue hills with fragrant flowers and fruits, green tree-lined mining trails, and coal mining subsidence areas with shallow bottom... If it weren't for the towering well towers and rotating sky wheels, it would be hard to imagine that this is a coal mine that has been mining for 45 years.
This is Shandong Energy Nantun Coal Mine. Nantun Mine is guided by the concept of green ecological development, adheres to the simultaneous progress of resource development and environmental governance, strengthens the construction of green mines, and reaps Jinshan and Yinshan in the protection of green waters and green mountains.
Panoramic Photo of Nantun Industrial Plaza
Nantun Mine successfully passed the 2019 national green mine selection, and has been rated as "National Civilized Coal Mine", "Provincial Civilized Unit", "Provincial Enterprise Civilized Unit", "First-Class Safety Production Standardization Coal Mine", etc. Honorary title.
Let every grain of dust have nowhere to escape
It is 1.5 kilometers away from Nantun Mine Office Building to Gangue Hill. Begonia planted on both sides of the road to the gangue hill, the blue fruit floated with green fruit fragrance. It is a world of difference from the dilemma of "gray on a sunny day and mud on two feet in summer.
Changes began in 2016. Nantun Mine invested 4.4 million yuan to renovate the comprehensive dust control project of gangue hill. They trimmed 200000 cubic meters of gangue piled up randomly according to the design requirements, covered more than 20000 cubic meters of loess, and planted grass seeds and lawns. Later, they re-"greening" of the gangue, uncovering the net, discharging the gangue, pushing the gangue, covering the net, reinforcement... The cumulative use of green dust net more than 450000 square meters, reducing dust pollution. This is a microcosm of Nantun Mine's comprehensive measures to "control" the dust and make the mining environment full of vitality.
In order to effectively solve the root causes of dust control and achieve the goal of "producing coal without coal and storing coal without exposing coal", in 2019, Nantun Mine will invest another 30 million yuan to complete the coal yard closure project and build two large coal storage bins and one slime bin to solve the problem of dust pollution in open-air coal yards.
"We have added fog cannons, sprinklers and other facilities in the coal shed to prevent dust from flying out of the coal shed during the loading process. And we have also completely made the dust no longer 'fly' through initiatives such as three-level flushing of coal transport vehicles and complete loading coverage of vehicles in the coal shed '." Sun Yong, secretary of the Party branch of the Coal Quality Shipping Center, said that there are special roads for transportation of coal to avoid concentrated living areas of residents and reduce the impact on the lives and environment of the surrounding people. The ground of these special roads and places is fully hardened, cleaned and watered regularly, and sewer pipes and green belts are built on both sides of the roads, which not only has good dust and dust suppression effects, but also beautifies the surrounding environment.
At the same time, the mine continues to build and improve the dust control and dust suppression sprinkler spray system, and long-term monitoring of productive dust in each production link. All roads in the industrial square are hardened, and the green coverage rate of the industrial square is enhanced to achieve comprehensive hardening and greening. The sprinkler circulates water to reduce dust generation. The transportation system and transportation equipment shall be fully closed to reduce the dust generation. Set up windproof and dust suppression net and car washing station in the waste rock hill, equipped with sprinkler pipe and spray device, and cover the exposed waste rock with dust suppression net cloth to suppress dust generation. And equipped with mobile fog gun vehicles, fixed fog gun vehicles for dust removal operations such as gangue removal operations, coal loading and other dust removal operations sprinkling water, the use of sprinklers to transport gangue road sprinkling dust removal. Underground mining adhere to wet rock drilling, spray, sprinkling and ventilation dilution measures to reduce the dust concentration in underground workplaces......
Let every drop of sewage become a resource
Walking into the mine water purification station, I saw the gurgling clear flow in the sewage treatment pool glowing in the summer sun, and the lush green belt could be seen everywhere, full of vitality.
"This purification station is responsible for the treatment and utilization of mine water. All mine drainage can be raised to the sedimentation tank for purification treatment through the underground pump room. The treatment rate of mine water reaches 100, and the comprehensive utilization rate of treated mine water is also 100.%." Wu Guanghui, deputy director of the mine community service center, said.
Underground production water, ground industrial water, greening and dust reduction water, in the face of such a large demand, where does the mine water come from? Nantun Mine achieves self-sufficiency in production water by strengthening the treatment of mine water and domestic sewage.
It is understood that in the production process, Nantun Mine will discharge about 3000 cubic meters of mine water mixed with coal and rock powder every day. In order to strengthen the recycling of water resources, the mine has built a mine with a daily treatment capacity of 11000 cubic meters. Water treatment plant.
Wu Guanghui introduced that the underground high-turbidity water enters the mine water treatment station, and the primary precipitation and water quantity adjustment of the mine water are carried out through the horizontal sedimentation tank and the regulating tank, and then sent to the water purifier room under pressure by the pressurizing pump, and purified by the high-efficiency full-automatic water purifier. The treated water is widely used for underground production of dust prevention water, slurry injection water, coal washing water, cleaning water for coal quality transportation center, etc, the remaining part is transported to Xilin Power Plant for circulating cooling water through the pipe network, realizing "zero discharge" of sewage ".
In the sewage treatment plant, the author saw that the sewage passed through coarse and fine grilles to remove garbage and sundries from the sewage. After filtration, the sewage flowed into the anaerobic zone of the oxidation ditch to exchange nutrients mixed with new water and activated sludge. Organic matter and nutrients would be neutralized here for more than 20 hours, and the originally dirty sewage gradually became clear.
"Here are the ornamental fish we feed. The fish swim freely in the water, which is enough to see how the water quality filtered out in the first process is." Li Lin, deputy director of the mine community service center, said confidently. Subsequently, the sewage passes through the secondary sedimentation tank and the flocculation tank to further precipitate the fine mud in the sewage. Then it passes through the processes of filtering small impurities such as activated carbon, pebbles and quartz sand in the valveless filter tank, flows to the reuse tank for storage and disinfection, and finally reaches the clean water tank.
According to statistics, the Nantun Mine Sewage Treatment Plant can treat about 4 million cubic meters of sewage in one year. The treated sewage is used for flushing toilets in family areas and public toilets, greening and watering, sprinkling water in coal yards to reduce dust, and road surface flushing. A drop of sewage has become a resource.
Let every corner green
"I have worked and lived in Nantun Mine for decades, and I have seen the face of the mine change dramatically step by step. Now, the environment here is as comfortable and pleasant as the city, and I don't want to move to the city." Retired worker Uncle Wang sighed.
Let "green" become the "beautiful business card" of mine development ". Nantun mine always adheres to the green mine development as the starting point and ultimate goal of the work, further improves the environmental quality of the mining area, and strives to improve the "happiness index" of the work and life of the majority of workers' families ".
According to the needs of production and life, different plants are planted in different regions. In front of the office area, trees, flowers and hedges with strong ornamental nature are planted, supplemented by green space to beautify the office environment; On both sides of the main road in the factory area, tall and broad trees suitable for local growth are planted; However, around the coal preparation center, production workshop and other production system buildings with high noise and dust, and around the gangue field, trees with strong dust retention, strong pollution resistance, dense branches and evergreen in all seasons are planted, and with a tree and shrub planting. On the basis of increasing the green area, strengthen the maintenance and management of existing trees, hedges, lawns, etc., and take remedial measures for dead trees and missing plants in the mining area in time. At present, the green area of the whole mine is more than 400,000 square meters, and the green coverage rate of the industrial square is 100. The greening has achieved harmony and unity with the surrounding natural environment.
Continue to carry out in-depth greening, purification, and beautification of mining areas, and sign an agreement with Shandong Chuangyuan Property Management Service Co., Ltd. to centrally remove and dispose of domestic waste to ensure that domestic waste does not spread or leak, and does not cause secondary pollution. By mobilizing employees to participate in environmental sanitation remediation activities, rooted in the awareness of independent care for sanitation, normalized environmental sanitation remediation, and effectively created a clean, clean, orderly, beautiful and civilized living environment in mining areas.
Nowadays, the greening of Nantun mining area has realized the organic combination of "high, medium and low", "point, line and surface", pavilions and pavilions reflect each other, small bridges, flowing water, ponds and other landscapes, and various functional areas have been cleaned, Greening, beautification and lighting, "underground is a factory, well is a garden" has become a true portrayal of the mining environment.
Website Editor: Gong Li
