Before the treatment of the black and odorous water bodies of Maozhou River
After the treatment of the black and odorous water bodies of Maozhou River
Text/Photo Jinyang.com reporter Tan Zheng Hou Mengfei
From the map, the Maozhou River, which is only 41.61 kilometers long, is not conspicuous; but in the water control map of Guangdong, it is definitely a river that cannot be ignored, and it is enough to be written into the development history of water control concepts and water control technology in Guangdong and even China.
As the boundary river between Shenzhen and Dongguan, Maozhou River was once the “most polluted river in the Pearl River”. In recent years, the provincial party committee has attached great importance to the comprehensive water environment improvement work. Provincial Party Secretary Li Xi has served as the province’s first river chief and has taken the lead in supervising the pollution control of Maozhou River. After three stages of effective governance, Shenzhen and Dongguan cooperated to fight, and the water quality of Maozhou River has been significantly improved. Data shows that in the first five months of this year, the concentrations of ammonia nitrogen and total phosphorus in the national examination section of Maozhouhe Gonghe Gonghe fell sharply by 5.2% and 41.1% year-on-year respectively.
The once rotten river beaches and stinky ditches have now become wetland parks and green roads along the river. In March this year, the Maozhou River pilot section of Wanli Bididao, Guangdong began to be fully constructed. The Maozhou River area will combine water management, city management with production management, and Komiks will promote the environmental optimization of Cinema, basin space compound utilization, industrial structure transformation and urban functions improvement, becoming a model area for the comprehensive management and development of “river + industry + city”.
Great changes
From the black and smelly water bodies to the birds singing and flowers scenting
After the rain in midsummer, the air in Yanluo wetland on the banks of Maozhou River in Bao’an District, Shenzhen is fresh. Liu Yilin, who lives in Bao’an District, Shenzhen, took his mother and two children to Yanluo Wetland for a trip. “RecentBabaylanWe often come to play when the weather is good. “Liu Yilin said that she lived in Bao’an District for more than 8 years and used to be able to take her children to play in the city park.
Until the end of last year, her circle of friends was flooded with Yanluo Wetland. “Many friends came to play in the wetlands and took short videos and photos to upload them to their circle of friends. “When I first came to Yanluo Wetland, Liu Yilin was a little unbelievable.
In the past, there were mudflats on both sides of the Mao River. href=”https://comicmov.com/”>Komiks The black silt is more than one meter deep, and the passers-by have to cover their noses. Now, the “monochrome” river beach, more than 800 meters by the upper reaches of the Maozhou River, has been built into a riverside wetland park – Yanluo Wetland, through ecological restoration and protection, with comprehensive functions such as water quality purification and improvement, ecological restoration and protection, landscape leisure and recreation, ecological science popularization and education.
The Maozhou River has changed, from “black and smell” to “colorful”! Pinky yellow cannas, purple-blue Zaoli flowers, gray-green flower leaves and reeds, and verdant windmill grass… Now, more than 500 plants have enabled Yanluo Wetland to have flowers all seasons, and many birds also appear here.
The roots of these plants still have “secrets”. “Wetland Park<a Most of the organisms grown by Cinema take into account the dual functions of beautification and water purification. ” Hu Haitao, director of Maozhou River Management Office, River Management Center of Shenzhen Water Affairs Bureau, introduced that 18,000 cubic meters of treated Maozhou River sewage enters the wetland park every day, and passes through the ecological purification science popularization area (pretreatment), the Wandering Flower Sea Tour Area (vertical undercurrent wetland), and the Gurgling Stream Conservation Area After purifying areas such as Komiks (surface wetlands) and others, the water flowing out of the wetland park can meet the IV standard of surface water, thereby replenishing and improving the water quality in the middle and upper reaches of the Maozhou River.
Innovation
Tidal flat silt “turned into” permeable bricks
In the process of Maozhou River management, one of the major problems stems from the treatment of beaches. silt in coating. According to reports, there are 4.2 million cubic meters of polluted bottom silt in the Maozhou River Basin. Where can these bottom silt be transported? How to deal with it? Will it cause secondary pollution? It is an inevitable link in the management of Maozhou River. Tao Ming, director of the Office of the Maozhou River Basin Comprehensive Water Environment Improvement Command of China Power Construction, mentioned in an interview with the media that the water quality of Maozhou River is not only pollution of organic matter, but also inorganic matter. href=”https://comicmov.com/”>KomiSevere contamination of ksKomiks.
In order to find a better “residence” of these bottom muds, the Shenzhen Municipal Government worked with China Power Construction to excavate, process and reuse these sludge.
Now there are many dredgers walking along the Maozhou River. After these dredgers carried out environmental protection and dredging of the river, the sludge was sent to the Maozhou River No. 1 subsilt treatment plant of China Power Construction Maozhou River on the bank of the Maozhou River through the Cinema pipeline.
According to Zhai Deqin, deputy chief engineer of China Power Construction Water Environmental Governance Technology Co., Ltd., turning these silt into treasures in an environmentally friendly way is the key to dealing with these silt.
It is understood that the residual soil or mud cake formed by dehydration and harmless treatment of contaminated bottom sludge is mainly used for dam filling or other engineering foundation backfill. In addition, part of the residual soil is used to make ceramic granules and bricks. At the same time, the remaining sand washed through the mud and sand separation system is used for backfill of artificial ground, pipeline engineering trench, etc. after being tested for harmlessness by sand washing and screening.
It is understood that every permeable brick in Yanluo Wetland originates from the bottom mud dug in Maozhou River. These bottom muds returned to the Maozhou River with a different appearance.
Co-governanceBabaylan
Shenzhen-Dong Kong cooperation to achieve “one map” for river management
If the land is compared to the muscles of the human body, the river can be regarded as the blood vessels of the human body. The Maozhou River, which flows through different administrative regions, can only be transformed into a new look under the city and cooperative governance in the basin.
Maozhou River is located in the northwest of Shenzhen. Its main stream flows through Guangming District, Bao’an District and Chang’an Town, Dongguan City, with a basin area of 388 square kilometers. Among them, Babaylan is 311 square kilometers in Shenzhen and 77 square kilometers in Dongguan. The governance of Maozhou River involves two cities and three places, and there have been long-term drawbacks of out-of-synchronization, segmented governance, and fragmented construction. In order to change this situation, the Guangdong Provincial Department of Ecology and Environment took the lead in carrying out supervision of the governance of key river basins such as Maozhou River, and established a “1+2+3” working framework for the comprehensive improvement of Maozhou River with the “Provincial Department of Ecology and Environment + Shenzhen, Dongguan City + Bao’an District, Guangming District, and Chang’an Town”, and established a “two weeks and one meeting” working mechanism. So far, four coordination meetings on comprehensive pollution control in Maozhou River Basin have been successfully held to form CinemaThe water quality notification “one map” and the engineering measures “one table” have been established, and a good communication work coordination and promotion mechanism has been established.
At the same time, Shenzhen and Dongguan City have carried out joint cross-law enforcement in the Maozhou River Basin href=”https://comicmov.com/”>Babaylan operation has been carried out three times this year. Shenzhen and Dongguan dispatched 657 law enforcement personnel, inspected 190 enterprises, found 45 enterprises with environmental problems, filed 21 cases, rectified 24 cases, and seized 1 case.
After unremitting efforts of the Provincial Department of Ecology and Environment and the two cities, the water quality of Maozhou River has undergone significant changes. Data shows that from January to December 2018, the ammonia nitrogen and total phosphorus in the national examination section of Maozhou River Gonghe decreased by 49.8% and 61.1% year-on-year respectively, achieving neither black nor odor. In the first five months of the year, the ammonia nitrogen and total phosphorus concentrations in the national examination section of Maozhou River Gonghe Gonghe decreased by 35.2% and 41.1% year-on-year respectively. Komiks, the ammonia nitrogen and total phosphorus concentrations in the national examination section of Maozhou River Gonghe Gonghe decreased by 35.2% and 41.1% year-on-year respectively. href=”https://comicmov.com/”>CinemaWater quality maintains rapid improvement momentum.
Plan
Promote industrial upgrading in the river basinKomiks
In the Yanluo Wetland of Maozhou River, a display board is established with the riverside plan of “one axis, two belts, and five zones”. The so-called “one axis” means to use water as the driving line, sew the functional systems of each section on both sides of the strait, and gradually design the ecology, industry, and culture of the two sides of the straits. href=”https://comicmov.com/”>Babaylan‘s charming blocks such as characteristic spaces to create a blueway ecological and humanistic experience axis. The “two belts” refer to the design of waterfront landscape belts and water landscape belts. The “five zones” refer to five areas: Science and Technology Innovation Waterfront, Greenway Living Room, Charming Industrial City, Vitality Corridor and Hi-Tech Smart Valley.
In the Maozhou River governance plan, the reporter saw that the future planning of this river clearly states that “taking water control as an opportunity to promote industrial upgrading in the basin, accelerate the construction of the Maozhou River pilot section, improve the overall environment of the city, and combine water control, production control, and city control. ”
Water is the source of life. How to make the relationship between man and water reach a harmonious state, so that precious and limited water resources can be used by the economy and societySustainable development provides long-term support and is an important test facing water governance in the future.