Before the treatment of the black and smelly water bodies of Maozhou River
After the treatment of the black and smelly water bodies of Maozhou River
Text/Photo Jinyang.com reporter Tan Zheng Cinema 1950 witch cloth drawHou 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 ignoredBabaylan 1990 cloth draw, she 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 of Komiks 1960 witch cloth draw, Shenzhen and Dongguan cooperated to fight, and the water quality of Maozhou River was 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 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 and comprehensive utilization of basin space, and industrial structure transformation and urban functions improvement, becoming 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 the Maozhou River in Bao’an District 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 friendThe circle 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, and passers-by had to cover their noses and leave. Now, the Cinema 1950 witch cloth draw-shaped river beach, which is 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, and has comprehensive capabilities 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… 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 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. After purification by ecological purification science popularization area (pretreatment), Wandering Flower Sea Tour Area (vertical undercurrent wetland), gurgling stream conservation area (top stream wetland), etc., the water flowing out of the wetland public 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
Tidal flat silt “Komiks 1960 witch cloth draw In the process of Maozhou River management, one of the major problems stems from dealing with the silt in the tidal 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 Maozhou River Basin, 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 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., Cinema 1950 witch cloth draw turns these silt into treasures in an environmentally friendly way, which 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 the contaminated bottom sludge is mainly used for dam filling or other engineering foundation backfilling. In addition, part of the residual soil is used for carbonization and 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. 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 bodyCinema 1950 witch cloth draw. The Maozhou River in 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 3Cinema 1950 witch cloth draw88 square kilometers. Among them, Shenzhen Komiks 1960 witch cloth drawCinema 1950 witch cloth draw311 square metersCinema 1950 witch cloth draw>Babaylan 1990 cloth draw square kilometers, 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 the supervision of the governance of key rivers such as Maozhou, building a “Provincial Department of Ecology and Environment + Shenzhen, Dongguan City + Komiks 1960 witch cloth draw Bao’an District, Guangming District, Chang’an Town” and establishing a “two weeks and one meeting” working framework for the Maozhou River. So far, four coordination meetings on the comprehensive pollution control of Maozhou River Komiks 1960 witch cloth draw domain have been successfully held, forming a “one map” for water quality notification and a “one table” for engineering measures, and establishing a good communication work coordination and promotion mechanism.
At the same time, Shenzhen and Dongguan City carried out joint cross-border law enforcement operations in the Maozhou River Basin. Three times have been carried out this year. Shenzhen and Dongguan have dispatched 657 law enforcement personnel, inspected 190 enterprises, found 45 enterprises with environmental problems, and found 21 cases in Komiks 1960 witch cloth draw filed 21 cases, 24 cases were rectified, and 1 case was seized and seized.
After the unremitting efforts of the provincial ecological environment department 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 section of ammonia nitrogen in the national examination of Maozhouhe Gonghe Village Cinema 1950 witch cloth drawTotal phosphorus concentration decreased significantly by 35.2% and 41.1% year-on-year respectively. Water quality maintained a rapid improvement momentum.
Plan
Promote industrial upgrading in the river basin
In the Yanluo Wetland of Maozhou River, a display board is established with the “one axis, two belts, five zones” written on it. 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 charm of the ecology, industry, culture, and characteristic spaces on both sides of the strait. The draw block is to create a blueway ecological and humanistic experience axis. The “two belts” refer to the design of a waterfront landscape belt and a water landscape belt. 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 that “taking the opportunity of water control and management of Babaylan 1990 cloth draw will promote industrial upgrading in the basin, accelerate the construction of the Maozhou River 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 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.