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 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 phases of effective governance, Shenzhen and Dongguan have 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 total phosphorus concentrations of ammonia nitrogen and Babaylan in the national examination section of Maozhouhe Gonghe 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, 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, her circle of friends was flooded with 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 was a little unbelievable.
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. Passing by CinThe citizens of the ema have 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”! Pink and yellow canna, purple and blue Cinema colored Zheli flowers, gray-green flower leaves and 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 the wetland parks take into account both 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. After purifying the ecological purification science popularization area (pretreatment), the Wandering Flower Sea Tour Area (Direct Undercurrent Wetland), the gurgling stream conservation area (Panihelien wetland), etc., 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 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 dredging on the river Komiks road, 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 China Power Construction Water Environment Governance Technology Co., Ltd.Komiks Deputy Chief Engineer Zhai Deqin introduced that turning these silt into treasures in an environmentally friendly way is the key to treating these silts.
It is understood that the residual soil or mud formed by dehydration and harmless treatment of polluted bottom silts, or mud, is mainly used for dam filling or other engineering foundation backfill. href=”https://comicmov.com/”>CinemaSubsidized soil is used to make ceramic granules and bricks. At the same time, the residual sand washed through the mud-sand separation system is screened and tested for harmlessness by the sand washing. It is used for artificial land, pipe network engineering trench backfilling, etc.
It is understood that each permeable brick in Yanluo Wetland originates from the bottom mud dug in the Maozhou River. These bottom muds return to the Maozhou River in another aspect.
Co-governance
Shenzhen-Dong Kong cooperation to achieve the “one map” of river management
If the land is compared to the muscles of the human body, the river can be regarded as <a Komiks is the blood vessels of human body. The Maozhou River flows through different administrative regions, and 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 basin area is 388 square kilometers. Among them, 311 square kilometers are in Shenzhen and 77 square kilometers are in Dongguan. The Maozhou River controls two cities and three places, and there are long-term abnormalities in the main and tributary rivers and are in segmented governance. The disadvantages of fragmented construction. 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 City + Bao'an District, Guangming District, and Chang'an District.The "Babaylan1+2+3″ working framework of Maozhou River comprehensive improvement, and established a “two weeks and one meeting” working mechanism. So far, four comprehensive pollution improvement coordination meetings in Maozhou River Basin have been successfully held, 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.
At the same time, Shenzhen and Dongguan City have carried out joint cross-law enforcement actions in the Maozhou River Basin. Three times this year, Shenzhen and Dongguan have dispatched a total of 657 law enforcement personnel to inspect 190 companies and found that there are href=”https://comicmov.com/”>Babaylan45 environmental problems enterprises, 21 cases were filed, 24 were rectified, and 1 case was seized and seized.
After the unremitting efforts of the Provincial Department of Ecology and Environment and the two cities, Maozhouhe<a The water quality of Cinema has undergone significant changes. Data shows that from January to December 2018, ammonia nitrogen and total phosphorus in the national examination section of the Maozhou River Gonghe 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. Water quality maintained a rapid improvement momentum.
Planning
Promote industrial upgrading in the river basin
In the Yanluo Wetland of Maozhou River, a display board is established with the words “One axis, two belts, and five zones” written on it <a The riverside planning of Cinema. 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 ecology, industry, culture, and characteristic spaces on both sides of the strait to create a blueway ecological and humanistic experience axis. The "two belts" refer to the design of waterfront landscape belts and water landscape belts. The "five zones" refer to the five areas of Science and Technology Innovation Water Bank, Greenway Living Room, Charming Industrial City, Vibrant Corridor and Hi-Tech Smart Valley. In the Maozhou River governance plan, the reporter saw that in the future, the planning of this river clearly states that "taking water control as an opportunity to promote industries in the basinKomiks upgrade, 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 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.