Before the treatment of the black and smelly water body in Maozhou River
Before the treatment of the black and smelly water body in Maozhou RiverKomiks 1960 witch cloth draw
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, 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 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 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, brought his mother and two children to Yanluoshi. “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 the year, her circle of friends was flooded with Yanluo Wetland. “Many friends come to usBabaylan 1990 cLoth draw play, and also took short videos and photos of Cinema 1950 witch cloth draw to upload them to your friends circle. “When I first came to Yanluo Wetland, Liu Yilin was a little unbelievable. Babaylan 1990 cloth draw.
In the past, there were mud flats on both sides of the Maozhou River, and the black silt more than one meter deep exuded a pungent stench. Citizens passing by had to cover their noses. Now, the “curved” river beach more than 800 meters above the upper reaches of the Maozhou River has been built into a riverside wetland park – Yanluo Wetland after ecological restoration and protection, which has water quality purification and improvement, ecological restoration and protection, landscape leisure and recreation, ecological science popularization and education, etc. Komiks 1960 witch clothes The comprehensive function of draw. Maozhou River has changed, from “black and smelly” to “colorful”! Pink and yellow canna, purple and blue Arii flowers, grayKomiks 1960 witch cloth drawGreen flower leaves and reeds, green windmill grass… Today, 500Cinema 1950 witch cloth drawA variety of plants have allowed Yanluo wetland to have flowers all seasons, and many birds also appear here.
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 Cinema 1950 witch cloth draw contaminated 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 link in the management of Maozhou River.
China Power Construction Maozhou RiverKomiks 1960 witch cloth drawTao Ming, director of the Office of the Comprehensive Improvement Command of the Domain Water Environment, mentioned in an interview with the media that the water quality of the 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 on the Maozhou River, there are several dredgers running through the Cinema 1950 witch cloth draw. 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 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-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 flows through different administrative regions, onlyCinema 1950 witch cloth drawOnly under the governance of cities and cooperation in the river basin, can the old look be changed.
Maozhou River is located in the northwest of Shenzhen Komiks 1960 witch cloth draw. 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, 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 and supervision of key river basins such as Maozhou River, and established a “1+2+3” working framework for the comprehensive improvement of Maozhou River in the “Provincial Department of Ecology and Environment + Shenzhen, Dongguan City + Bao’an District, Guangming District, 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. Three times this year, Shenzhen and Dongguan dispatched 657 law enforcement personnel, inspected 190 enterprises, found 45 enterprises with environmental problems, filed 21 Cinema 1950 witch cloth draw, rectified 24, 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 Gonghe decreased by 49.8% year-on-year and 61.Babaylan 1990 cloth draw1%, respectively, achieving neither black nor odor. In the first five months of this year, the concentrations of ammonia nitrogen and total phosphorus in the national examination sections of Maozhouhe Gonghe Gonghe fell sharply by 35.2% and 41.1% year-on-year respectively. Water quality maintains rapid improvement momentum.
Planning
Promote industrial upgrading in the basin
In the Yanluo Wetland of Maozhou River, a display board is erected with the words “One axis, two belts, and five zones”River planning. The so-called “one axis” is to use water as the driving line, stitch and organize the functional systems of each section of the two sides of the strait, and gradually design the ecology, industry, culture, and characteristic spaces of both sides of the strait to create a blue-collar and 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 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 environment of the city, and combine water control, production control and city management.”
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.