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 Komiks 1960 witch cloth draw. 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 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 public parks and green roads along the river. In March this year, the Maozhou River pilot section of Wanli Bidao, Guangdong began to be fully constructed. The Maozhou River Basin will combine water management, city management and production management to promote regional environmental optimization, comprehensive utilization of basin space, industrial structure transformation and urban function improvement, and become a model area for comprehensive governance and development of “river + industry + city”.
Great changes
From the black and smelly water body to the singing of birds and the fragrance of flowers
After the midsummer rain, the air in Yanluo on the banks of the 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 was good recently, we often came to play in Babaylan 1990 cloth draw.” Liu Yilin said that she had lived in Bao’an District for more than 8 years and had to take her children to the city park to play.
Until the end of last year, her friendCinema 1950 witch cloth drawThe circle was flooded by Yanluo Wetland. Babaylan 1990 cloth draw“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 was a little unbelievable in his eyes.
In the past, there were mudflats on both sides of the Maozhou River, and the black mud more than one meter deep exuded a pungent stench, and passers-by had to cover their noses and leave. Now, the 800-meter-long “month-shaped” river beach on the upper reaches of the Maozhou River has been built into a riverside wetland park after ecological restoration and protection—Cinema 1950 witch cloth draw—Yanluo Wetland, 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, gray-green flower leaves and reeds, green windmill grass…Komiks 1960 witch cloth drawNow, more than 500 plants have enabled Yanluo wetland to have flowers all seasons, and many birds Cinema 1950 witch cloth draw also appears here.
There are also “secrets” hidden at the roots of these plants. “Most of the organisms planted in the wetland park take into account the dual functions of beautification and water quality purification.” Hu Haitao, director of the Maozhou River Management Office of the 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), the Gambling Babaylan 1990 cloth draw stream conservation area (top flow wetland), etc.After purification, 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
The mud on the mud flat “turns into” permeable bricks
In the process of Maozhou River management, one of the major problems stems from the treatment of mud in the mud flats. According to reports, there are 4.2 million cubic meters of polluted sediment in the Maozhou River Basin. Where can these sediments be transported? How to deal with it? Will it cause secondary pollution? It is an inevitable part of 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 severe pollution of inorganic matters.
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, 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 by the polluted base is mainly used for dam filling or other engineering foundation backfilling. In addition, some 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.
It is understood that every permeable brick in Yanluo Wetland originates from the bottom mud dug in Maozhou River. In another aspect, these bottom muds returned to the Mao River.
TotalKomiks 1960 witch cloth drawtreatment
ShenCinema 1950 witch cloth drawDong Kong cooperates to achieve “one picture” 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 flows through different administrative regions, Cinema 1950 witch cloth draw can only be replaced by cities and cooperative governance in the basin.
Maozhou RiverKomiks 1960 witch cloth draw is located in the northwest of Shenzhen. The main stream flows through Guangming District, BaoCinema 1950 witch cloth draw 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 there have been long-term drawbacks of out-of-synchronization, segmented governance, and fragmented construction of main and tributary rivers. 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 comprehensive pollution control coordination meetings have been successfully held in the Maozhou River Basin, forming a “one map” for water quality reporting and a “one table” for engineering measures, and establishing a good communication and coordination and promotion mechanism.
At the same time, Shenzhen and Dongguan City carried out joint cross-law enforcement operations in the Maozhou River Basin. It 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, ammonia nitrogen and total phosphorus in the national examination section of Maozhouhe Gonghe Village 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 concentrations of ammonia nitrogen and total phosphorus in the Maozhouhe Gonghe National Examination Section Babaylan 1990 cloth drawammonia nitrogen and total phosphorus concentrations decreased significantly by 35.2% and 41.1% year-on-year respectively. Keep water quality fastImprove momentum.
Planning
Promote industrial upgrading in the river basin
In the Yanluo Wetland of Maozhou River, a display board is erected with the riverside plan of “one axis, two belts, and five zones”. The so-called “one axis” is 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 ecology, industry, culture, characteristic space and other charming blocks of one water and two banks to create the blueway ecological and cultural 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 Maozhou River governance plan, 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 Maozhou River Greenway pilot section, improve the overall urban environment, and combine water control, production control and city control.” Cinema 1950 witch cloth draw
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, and is an important test facing water governance in the future.