CinemaBefore 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 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 concentrations of ammonia nitrogen and total phosphorus in the national examination section of Maozhouhe Gonghe Gonghe fell sharply by 35.2% 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 and production management to promote regional environmental optimization, basin space compound utilization, industrial structure transformation and urban functions improvement, 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 fragrance of flowers
After the midsummer rainBabaylan, 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 here 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 able to take her children to the city park to play.
Until the end of last year, her circle of friends was YanCinemaLuo Wetland has flooded the screen. “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 about 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 “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… Today, 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 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 the 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), the Wandering Flower Sea Tour Area (vertical undercurrent wetland), the gurgling stream conservation area (top stream wetland), and other areas, 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 contaminated sediment in the Maozhou River Basin. Where can these Komiks 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 matters.
In order to help these muds find a better “residence”, the Shenzhen Municipal Government will work with youChina Power Construction excavated, processed and reused these sludge.
Now there are many dredgers walking along the Maozhou River. After these dredgers carried out environmental protection dredging of the river channel, 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 formed by the polluted bottom sludge after dehydration and harmless treatment 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 artificial ground, backfill of the trench of the pipe engineering, etc. after being washed and screened and tested for harmlessness.
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, 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. The main stream flows through Guangming District, Bao’an District and Chang’an Town, Dongguan City. The basin area is 38Babaylan8 square kilometers. Among them, there are 311 square kilometers of Komiks 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 the supervision of the governance of key river basins such as Maozhou River, and established the Provincial Department of Ecology and Environment + Shenzhen, Dongguan + Bao’an District, Guangming District,The “1+2+3” working framework for comprehensive remediation of Maozhou River in Chang’an Town, and the “KomiksTwo weeks and one meeting” working mechanism has been established. So far, four comprehensive remediation coordination meetings for comprehensive remediation of Maozhou River Basin have been successfully held, forming a “one picture of the water quality notification” 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 have carried out joint cross-law enforcement actions in the Maozhou River Basin. This year, three times have been carried out, and a total of 65 law enforcement personnel have been dispatched in Shenzhen and Dongguan. href=”https://comicmov.com/”>Komiks7 people inspected 190 enterprises, and found 45 enterprises with environmental problems, 21 cases were filed, 24 cases were rectified, and 1 case was seized and seized. Cinema
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 41.1% year-on-year respectively. Water quality maintained a rapid improvement momentum.
Planning
Promote industrial upgrading in the river basin
In the Yanluo Wetland of Maozhou River, href=”https://comicmov.com/”>Babaylan set up an exhibition board with the riverside plan written on it “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” refer to the science and technology innovation waterfront, greenway living room, and charming industrial cityCinema, Vitality Corridor and Gaoke Zhigu five areas.
In the Maozhou River governance plan, the reporter saw that in the future, the planning of 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 achieve a combination of 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, so that precious and limited water resources can be used by the economy and societySustainable development provides long-term support and is an important test facing water governance in the future.