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 1.61-kilometer-long Maozhou River is not conspicuous; but in the water control map of Guangdong, it is definitely href=”https://comicmov.com/”>Komiks 1960 witch cloth draw A river that cannot be ignored is enough to be written into the 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 improvement of water environment. Cinema 1950 witch cloth drawPeople’s Party Secretary Li Xi served as the province’s first river chief and took 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 ammonia nitrogen and total phosphorus concentrations in the national examination section of the Maozhouhe Gonghe Gonghe Village fell sharply by 35.2% 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 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. “We often come to play when the weather is good recently.” 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, she Cinema 1950 witch clothesDraw‘s circle of friends has been flooded by Yanluo Wetland. “Many friends came to the wetland to play, and they also took short videos and photos to upload to their friends circle.” When they first came to Yanluo Wetland, Liu Yilin had Babaylan 1990 cloth draw and didn’t believe in his eyes.
In the past, there were mud flats on both sides of the Maozhou River, and the black silt more than one meter deep Komiks 1960 witch cloth drawBabaylan 1990 cloth drawThe mud emitted a pungent stench, and passers-by had to cover his nose and walk away. Now, the “curve-shaped” river beach more than 800 meters on the upper reaches of the Maozhou River has been built into a riverside wetland park – Yanluo Wetland after ecological restoration and protection, which has 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 smelly” to “colorful”! Pinky yellow canna, purple-blue Zheli flowers, gray-green flower-leaf reeds, green windmill grass… Nowadays, more than 500 plants have enabled Yanluo Wetland to have flowers all year round, and many birds also appear here.
There are also “secrets” hidden at the roots of these plants. “Most of the organisms planted in wetland parks take into account the dual functions of beautification and water quality purification.” Hu Haitao, director of Maozhou River Management Office of the River Management Center of Shenzhen Water Affairs Bureau, introduced that 18,000 cubic meters of treatment per day are 18,000 cubic meters of Maozhou River sewage after Komiks 1960 witch cloth draw. After purifying the ecological purification science area (pretreatment), the Wandering Flower Sea Tour Area (vertical undercurrent wetland), the gurgling stream conservation area (top flow wetland), and other areas, the water flowing out of the wetland park can meet the standard of surface water Class IV, thereby replenishing and improving the Maozhou River. href=”https://comicmov.com/”>Babaylan 1990 cloth drawmiddle and upper stream water quality.
Innovation
The mud on the tidal flats “turned into” permeable bricks
In the process of Maozhou River management, one of the major problems stems from the treatment of the beach.micmov.com/”>Komiks 1960 witch cloth draw silt in coating. According to reports, there are 4.2 million cubic meters of contaminated bottom silt in the Maozhou River Basin. Where can these bottom silt be transported? How to deal with Cinema 1950 witch cloth Drawing? 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, mentioned in an interview with the media that the water quality of Maozhou River is not only pollution of organic matter, but also severe pollution of inorganic matter.
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 silts.
Now, there are many dredging boats passing through the Maozhou River. After these dredgers carried out environmental protection and dredging of the river, they sent the sludge to the No. 1 bottom sludge treatment plant of China Power Construction Maozhou River located on the bank of Maozhou River through pipelines. According to Zhai Deqin, deputy chief engineer of China Power Construction Water Environmental Management Technology Co., Ltd., turning these sludge into treasures in an environmentally friendly way is the key to treating these sludge.
It is understood that the residual soil or mud cake formed by dehydration and harmless treatment of polluted bottom sludge is mainly used for dam filling or backfill of other engineering foundations. In addition, some of the residual soil is used to make ceramic granules and bricks. In this case, Cinema 1950 witch cloth draw At the same time, the remaining sand washed through the mud and sand separation system, and after being screened and tested for harmlessness, it is used for artificial ground, pipe network engineering trench backfilling, etc.
Komiks 1960 witch cloth drawIt is understood that every permeable brick in Yanluo Wetland originates from the bottom mud dug from the Maozhou River. These bottom muds return to the Maozhou River in another aspect.
Co-governance
Shenzhen-Dong Kong cooperation to achieve a “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 cities and cooperative governance in the basin. The Maozhou River is located in the northwest of Shenzhen. The 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, 3Babaylan 1990 cloth draw 11 square kilometers, 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 of main and tributary rivers. To change this situation, the Guangdong Provincial Department of Ecology and Environment took the lead in carrying out key flows such as Maozhou River. Komiks 1960 witch cloth draw, and established the Provincial Department of Ecology and Environment + Shenzhen City. Draw, Dongguan City + Bao’an District, Guangming District, Chang’an Town” “1+2+3” working framework for comprehensive remediation of Maozhou River, and established a “two weeks and one meeting” working mechanism. So far, four comprehensive pollution remediation coordination meetings have been successfully held in Maozhou River Basin, 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 for work.
Similarly, Shenzhen and Dongguan City have carried out joint cross-law enforcement actions in the Maozhou River Basin. This year, Babaylan 1990 clothes Draw has been carried out three times. Shenzhen and Dongguan have 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 the 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 the Maozhou River Gonghe Gonghe decreased by 35.2% and 41.1% year-on-year respectively. href=”https://comicmov.com/”>Cinema 1950 witch cloth draw%. 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 erected on it with Komiks 1960 witch cloth drawThe riverside planning of “one axis, two belts, 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, culture, and characteristic spaces of the two sides of the strait, creating a blueway ecological and humanistic experience axis. “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 management plan of Maozhou River, the reporter saw that the future planning for this river clearly states, “Take water control as an opportunity to promote industrial upgrading in the basin, accelerate the construction of the pilot section of the Maozhou River Greenway, improve the overall urban environment, and combine water control, production control and city control.” Water is the source of life. How to make the relationship between people 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 an important test facing water governance in the future.