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 eye-catching; but in Guangdong’s water control map, 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, the 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 improvement of water environment. 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, KomiksShenzhen and Dongguan jointly fought, and the water quality of Maozhou River has been significantly improved. Data shows that in the first five months of this year, the ammonia nitrogen and total phosphorus concentrations in the national examination section of Gonghe Village, Maozhouhe Gonghe fell sharply by 35.2% and 41.1% year-on-year respectively.
The former razor river beach and stinky ditch have now become wetland parks and green roads along the river. In March this year, the Maozhou River pilot section of Wanli Bidao, Guangdong started construction. The Maozhou River Basin will combine water management, city management with production management, promote regional environmental optimization, comprehensive utilization of basin space, industrial structure transformation and urban functions, and become a model area for comprehensive governance and development of “river + industry + city”.
Great changes
From the black and smelly water bodies to the singing of birds and the fragrance of flowers
After the midsummer rain, 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. “When the weather is good recently, we often come to play with Komiks.” Liu Yilin said that she has lived in Bao’an District for more than 8 years and used to be able to take her children to the city park to play.
Until the end of last year, her circle of friends was flooded with Yanluo Wetland. “veryMany friends came to the wetland to play, and also took short videos and photos to upload them to your friends circle. “When I first came to Yanluo Wetland, Liu Yilin was a little unbelievable.
Cinema‘s eyes were a little unbelievable.
In the past, there were mudflats on both sides of the Maozhou River, and the black silt more than one meter deep exuded a pungent stench. The passing citizens were about to cover their noses and walk. Now, the “curved” river beach more than 800 meters above the Maozhou River has been built into a riverside wetland park through ecological restoration and protection, which has both water quality purification and improvement, ecological restoration and protection, href=”https://comicmov.com/”>Babaylan Landscape leisure and recreation, ecological science popularization and other comprehensive functions.
Maozhou River has changed, from “black and smelly” to “colorful”! Pinky and yellow canna, purple-blue Zaoli flowers, gray-green flower leaves and reeds, verdant windmill grass… Today, more than 500 plants have enabled Yanluo Wetland to have flowers all seasons, and many birds also appear here.
The roots of these plants are still hidden. “Most of the creatures planted in the wetland parks 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. After purifying through the ecological purification science popularization area (pretreatment), Wandering Flower Sea Tour Area (vertical undercurrent wetland), and gurgling stream conservation area (top stream wetland), the water flowing out of the wetland park can meet the IV standard of surface water, thereby replenishing and improving the water quality of the middle and upper reaches of the Maozhou River. Innovating the mud flat silt “turned into” permeable bricks
In the process of Maozhou River management, one of the major problems stems from the treatment of silt in the mud flats. According to reports, Maozhou River Basin is href=”https://comicmov.com/”>Cinema has 4.2 million cubic meters of polluted bottom sludge. Where can these bottom sludge be transported? How to deal with it? Will it cause secondary pollution? It is an inevitable part of the Maozhou River management. Tao Ming, director of the Office of the Maozhou River Comprehensive Water Environment Remediation Command of China Power Construction’s Maozhou River Basin, mentioned in an interview with the media that the water quality of the Maozhou River is not only pollution of organic matter.There is also severe pollution of inorganic substances.
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 sludges.
Now there are many dredgers walking along the Maozhou River. After these dredgers carried out environmental protection and dredging of the river, they sent the sludge through pipelines to the Maozhou River No. 1 subsilt treatment plant of China Power Construction Maozhou River on the bank of the Maozhou River.
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 silts. It is understood that the residual soil or mud cake formed after dehydration and decontamination of the contaminated bottom sludge is mainly used for dam filling or other engineering foundation backfill. In addition, part of the residual soil is used for carbonization of ceramic granules and brick making. 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. Babaylan
It is understood that every permeable brick in Yanluo Wetland originates from the bottom mud dug in the Maozhou River. These bottom muds returned to the Maozhou River with a different appearance.
Co-governance
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, there are 311 square kilometers in Shenzhen and 77 square kilometers in Dongguan. The governance of Maozhou River involves two cities and three places, and has long had the disadvantages of dissynchronization, segmented governance, and fragmented construction of the tributaries. In order to change this situation, the Guangdong Provincial Department of Ecology and Environment took the lead in the supervision of the governance of key river basins such as Maozhou River, and established the “Provincial Department of Ecology and Environment + Shenzhen, Dongguan City + Bao’an District, GuangmingThe “1+2+3″ working framework for comprehensive remediation of Maozhou River in the district and Chang’an Town” was established, and the “two weeks and one meeting” working mechanism was established. So far, four comprehensive remediation coordination meetings for comprehensive remediation of Maozhou River Basin have been successfully held, forming a “one map” for water quality notification and a “one table” for engineering measures, and establishing a good communication and coordination and promotion mechanism.
At the same time, Babaylan Shenzhen and Dongguan City carried out joint cross-enforcement actions in Maozhou River Basin, href=”https://comicmov.com/”>Cinema has been carried out three times this year. Shenzhen and Dongguan have dispatched 657 law enforcement personnel, inspected 190 enterprises, found 45 enterprises with environmental problems, and filed 21 cases. href=”https://comicmov.com/”>Cinema has been restructured 24 companies and seized one case.
After the 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 this year, the ammonia nitrogen and total phosphorus concentrations in the national examination section of Maozhou River Gonghe Gonghe decreased by 35.2% and 4 respectively year-on-year respectively year-on-year respectively. 1.1%. Water quality maintains rapid improvement momentum.
Planning
Promote industrial upgrading in the river basin
In the Yanluo Wetland of Maozhou River, a display board is established with the riverside plan “one axis, two belts and five zones”. The so-called “one axis” means to use water as the driving line, sew and organize the functional systems of each section on both sides of the strait, and gradually design the charming blocks such as ecological, industrial, cultural, and characteristic spaces on both sides of the strait to create a blueway ecological and humanistic experience axis. “Two belts” refer to the design of waterfront landscape belts and water landscape belts. “Five zones” Babaylan refers to five areas: Science and Technology Innovation Water Bank, Greenway Living Room, Charming Industrial City, Vitality Corridor and Hi-Tech Smart Valley.
In the Maozhou River governance plan, the reporter saw that in the future, the planning of this river clearly states that “taking the opportunity of water control in the Cinema River as a way to promote industrial upgrading in the basin, accelerate the construction of the Maozhou River Greenway 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 and make precious and limited water resources provide long-term support for the sustainable development of the economy and society is water governance.com/”>KomiksThe important tests facing the future.