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 “river with the most serious pollution in the Pearl 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 became the first river chief in the province 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 Maohe Gonghe National Examination Sections decreased significantly by 35.2% and 41.1% year-on-year respectively.
The old rotten river beaches and smelly waterCinema 1950 witch cloth draw ditch has now become a wetland park and a greenway 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. “Komiks 1960 witch cloth drawWe often come to play recently when the weather is good.” Liu Yilin said that she has lived in Bao’an District for more than 8 years, and used to be Komiks 1960 witch cloth draw can only take her children to the city park to play.
Until the end of last year, her circle of friends was flooded with YanBabaylan 1990 clothes drawLuo WetlandBabaylan 1990 clothes draw. “Many friends came to the wetland to play, and they also took short videos and photos.Komiks 1960 witch cloth draw. clothes draw spread to friends circle. “When I first came to Yanluo Wetland, Liu Yilin was a little unbelievable.
In front of Babaylan 1990 cloth draw, there were mud flats on both sides of the Maozhou River. The black mud more than one meter deep exuded a pungent stench, and passers-by had to cover his nose. Now, the “month-shaped” river beach more than 800 meters on the upper reaches of the Maozhou River passes through the ecological Cinema 1950 witch clothes The restoration and protection have been built into a riverside wetland park – Yanluo Wetland, which has comprehensive functions such as water purification and improvement, ecological restoration and protection, landscape leisure and recreation, ecological science popularization and education.
Maozhou River has changed, from “black and smelly” to “colorful Cinema 1950 witch cloth drawcolor”! Pink yellow canna, purple-blue Zheli, gray-green flower leaves and reeds, verdant windmill grass… Nowadays, more than 500 plants have enabled Yanluo Wetland to have flowers in all seasons, and many birds also appear here.
The roots of these plants are still hidden. “The growth of the planted in the wetland parkBabaylan 1990 clothes Most of the things 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 ecological purification science popularization area (pretreatment), Wandering Flower Sea Tour Area (vertical undercurrent wetland), Gambling stream conservation area (top flow wetland) and other areasAfter 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 to? 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 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 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 Maozhou River No. 1, China Power Construction Maozhou River, located on the bank of Maozhou River. According to Zhai Deqin, deputy chief engineer of Cinema 1950 witch cloth draw Water Environment Governance Technology Co., Ltd., turning these silt into waste into treasure 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 of the digging 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, which flows through different administrative regions, can only be transformed into a new look under the city 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. The area of Komiks 1960 witch cloth draw is 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. There are long-term draws of the out-of-synchronization of the main and tributary rivers, segmented governance, and fragmented construction. In order to change this situation, the Guangdong Provincial Department of Ecology and Environment took the lead in the supervision of the governance and supervision of Maozhou River and other key river basins, 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, and found that there were environmental problems in 45 enterprises, including 21 cases, 24 cases were filed, and 1 case was seized and seized.
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 national examination sections of Maozhouhe Gonghe Gonghe fell sharply by 35.2% and 41.1% year-on-year respectively. Water qualityMaintain rapid improvement 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” 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 charming blocks such as ecology, industry, culture, 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. 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 in the future, Cinema 1950 witch cloth draw‘s 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.”
Water is the source of life. How to make the relationship between people and water reach a harmonious state, so as to make precious and limited water resources Draw provides long-term support for the sustainable development of the economy and society, and is an important test facing water governance in the future.