Pay more attention to the public account: environmental protection water treatment
Not long ago, the expansion project of the third phase of the sewage treatment plant in the south of Shenyang was commissioned, and after the project was officially completed, the total design treatment capacity of the sewage treatment plant in the south of Shenyang reached 1.3 million m³/d. So, do you know all about these million-ton sewage treatment plants in China?
01
Shanghai Zhuyuan Sewage Treatment Plant
Treatment capacity: 3.4 million m³/d (2.2 million m³/d in the first three phases, 1.2 million m³/d in the fourth phase)
Main process: AAO process
Operating unit: Shanghai Chengtou Water Group
Design unit: Shanghai General Institute of Urban Construction Design and Research
Effluent standard: Class A
Water operation time: June 2020 (upgrading and transformation of the first and second plants) 2024 (fourth phase plan time)
Total investment: 3.96 billion yuan, 1.155 billion yuan (upgrading and transformation), 10 billion yuan (phase IV)
The first and second sewage treatment plants in Zhuyuan, Pudong New Area, were built in 2017, and the first and second sewage treatment plants in Zhuyuan, Pudong New Area, Shanghai, adopted the more advanced sewage treatment technology AAO+ advection sedimentation + high-efficiency sedimentation + deep bed sand filtration, with a design scale of 2.2 million m³/d and an early daily treatment scale of 2.2 million m³/d, including 1.7 million m³/d of Zhuyuan No. 1 Sewage Treatment Plant and 500,000 m³/d of Zhuyuan No. 2 Sewage Treatment Plant, which were designed by Shanghai Urban Construction Design and Research Institute. The project investment is nearly 3,960,879,200 yuan.
As one of the three major sewage areas in the central city of Shanghai, the Zhuyuan sewage area covers an area of about 335 square kilometers and serves a population of about 6 million people. After the completion of the project, the mixed water of dry flow sewage and rain and sewage transferred from the central urban area will be treated to meet the needs of matching the trunk transmission capacity with the terminal treatment capacity.
The construction content of the fourth phase of the Zhuyuan Sewage Treatment Plant includes a new sewage treatment plant with a scale of 1.2 million m³/d, a sludge dewatering and drying plant with an average scale of 120 tDS/d (peak scale of 180 tDS/d), and an inlet and outlet water main pipe of the sewage treatment plant with a total length of about 5.1km and a pipe diameter of φ4000~3000mm, etc., with a construction cost of about 7 billion yuan and a total investment of more than 10 billion yuan.
After the completion of the project, the total treatment capacity of Zhuyuan Sewage Treatment Plant will reach 3.4 million m³/d, ranking first in Asia and top five in the world, which will improve the quality of the coastal water environment of the Yangtze River Estuary in Shanghai, consolidate the water environment treatment effect in the central urban area, and effectively promote the protection of the Yangtze River.
02
Shanghai Bailonggang Sewage Treatment Plant
Treatment capacity: 2.8 million m³/d
Main process: AAO process
Operating unit: Shanghai Chengtou Sewage Treatment Co., Ltd
Design unit: Shanghai Municipal General Institute
Effluent standard: Class A
Water operation time: 1999
Total investment: 7.089 billion (upgrading and transformation)
Shanghai Bailonggang Sewage Treatment Plant is located in the east of Heqing Town, Pudong New Area, east of the Yangtze River, west of Suitang River, north of Zhangjiabang, south of the current vacant land, north of the north of the open space, north to the south of the length of about 2.2~2.5km, east to west width of about 1.0~1.4km, a total area of 254.37hm2.
Bailonggang Sewage Treatment Plant was built in 1999 and is an important part of the second phase of Shanghai's sewage treatment project. When it was first built, it was a pretreatment plant with a scale of 1.72 million m³/d, with coarse and fine grids and grit tanks, which were discharged into the Yangtze River after removing suspended garbage and sand. In September 2008, after upgrading and expansion, the treatment scale and standard were improved, and the service area includes Minhang, Xuhui, Huangpu and Pudong along the area.
The service area of Bailonggang is about 1060k㎡. As the world's third largest manufacturer in Asia. The designed daily treatment capacity of Bailonggang Sewage Treatment Plant is 2.8 million m³/d, and the effluent implements the (GB18918-2002) "Pollutant Discharge Standard for Urban Sewage Treatment Plants" Class A discharge standard, with an annual sewage treatment volume of about 1.1 billion m³ and an annual COD reduction of more than 280,000 tons, accounting for about one-third of Shanghai's emission reduction, making great contributions to the reduction of water pollutants in Shanghai.
With the continuous advancement of the transformation of rain and sewage mixing in Shanghai, the treatment of black and odorous water bodies, and the functional adjustment of the sewage treatment plant in the service area, the water inflow of the Bailonggang Sewage Treatment Plant is increasing day by day. It is urgent to expand the Bailonggang Sewage Treatment Plant again to ensure that the effluent is stable and up to standard, and to reduce the water pollution of the Yangtze River.
The Bailonggang Sewage Treatment Plant Expansion Phase III Project is located at the existing sludge landfill in the Bailonggang Sewage Treatment Plant area, and the project content mainly includes three parts:
(1) Treatment and disposal of 800,000 tons (about 80% water content) of sludge in the current sludge landfill of Bailonggang Sewage Treatment Plant;
(2) a new wastewater treatment facility with a capacity of 700,000 m³/d;
(3) New sludge treatment and disposal facilities with a scale of 112tDS/d and related supporting facilities.
According to the "Feasibility Study Report on the Expansion of the Third Phase of Bailonggang Sewage Treatment Plant", the total investment is 682261 million yuan, of which the project cost is 606068 million yuan, the other construction costs are 437.04 million yuan, and the preparatory cost is 324.89 million yuan.
03
Hangzhou Qige Sewage Treatment Plant
Treatment capacity: 1.5 million m³/d (400,000 m³/d in the first phase, 200,000 m³/d in the second phase, 600,000 m³/d in the third phase, 300,000 m³/d in the fourth phase)
Main process: AAO process (phase I), inverted AAO process (phase II), improved AAO process (phase III), AAO+ deep bed filter (phase IV)
Operating unit: Hangzhou Water Affairs Group
Design unit: China Municipal Engineering North China Design and Research Institute Co., Ltd
Effluent standard: Class A
Water operation time: August 2003 (phase I), September 2005 (phase II), June 2012 (phase III), September 2019 (phase IV)
Total investment: 720 million yuan (phase I), 420 million yuan (phase II), 1.8 billion yuan (phase III), 1.418 billion yuan (phase IV)
Hangzhou Qige Sewage Treatment Plant Project is one of the "Five Ten Billion Yuan" projects in Zhejiang Province, with a total investment of over 4.3 billion yuan in the fourth phase and a designed daily treatment scale of 1.5 million m³/d. Qige Sewage Treatment Plant is the largest urban domestic sewage treatment plant in Hangzhou, which is responsible for more than 95% of the domestic sewage treatment capacity in the main urban area of Hangzhou.
The Qige Sewage Treatment Plant is mainly responsible for sewage treatment in the northern area of Hangzhou and Xiasha Economic Development Zone. The main treatment equipment of the sewage treatment plant is divided into the first, second, third and fourth phases, of which the first phase of the project has a sewage treatment capacity of 400,000 m³/d, the second phase of the project has a sewage treatment capacity of 200,000 m³/d, the third phase has a sewage treatment capacity of 600,000 m³/d, and the fourth phase of the project has a sewage treatment capacity of 300,000 m³/d, with a total treatment capacity of 1.5 million m³/d.
The four phases of the project are all using the mature AAO+ deep bed filter technology. The staff also introduced to us the advantage of the process is that compared with the traditional tiled sewage treatment plant, the main process treatment of the semi-buried sewage treatment plant is concentrated in a semi-buried double-layer box, the treatment unit is highly integrated, interlocking, and the pool is buried deep underground, which greatly saves urban land; The strong closure of the buried box, supplemented by the advanced biological deodorization system, effectively controls the odor emission and improves the environment of the sewage plant.
04
Shenyang South Sewage Treatment Plant
Treatment capacity: 1.3 million m³/d (600,000 m³/d in the first phase, 200,000 m³/d in the second phase, 500,000 m³/d in the third phase)
Main process: AAO process
Operating unit: Shenyang Zhenxing Environmental Protection Co., Ltd
Design unit: China Municipal Engineering Northeast Design and Research Institute Co., Ltd
Effluent standard: Class A
Water operation time: October 2013 (phase I), December 2019 (phase II), end of 2021 (phase III estimated)
Total investment: 1.35 billion yuan (phase 1 and 2), 1.2 billion yuan (phase 3)
Shenyang South Sewage Treatment Plant is a key project in the construction of ecological city in Shenyang. The treatment capacity of the Shenyang South Sewage Treatment Plant is 600,000 m³/d in the first phase and 200,000 m³/d in the second phase. The expansion project of the third phase of the southern sewage treatment plant will be implemented in 2020, which lasted 14 months, with a total investment of 1.2 billion yuan, a land area of 23.2hm2, and a design treatment capacity of 500,000 m³/d. Sewage transferred from the old town of Tiexi District.
05
Guangzhou Liede Sewage Treatment Plant
Capacity: 1.2 million m³/d
Main process: improved AAO
Operating unit: Guangzhou Water Purification Co., Ltd
Design unit: Guangzhou Municipal Design and Research Institute
Effluent standard: Class A
Water operation time: November 1999 (phase I), October 2003 (phase II), November 2006 (phase III), June 2010 (phase IV)
The service scope of Liede sewage treatment system has 1 sewage treatment plant and 6 sewage lifting pumping stations. The design scale of the plant is 1.2 million m³/d. The project is located in the east of Liede Village, Tianhe District, on the north bank of the Pearl River of South China Bridge, covering an area of 39hm2, with a total sewage treatment capacity of 1.2 million m³/d, completed in four phases, and at the same time 8 off-site supporting lifting pumping stations, covering most of the downtown areas north of the Pearl River forewaterway, with a service area of 141.5 square kilometers and a service population of about 2.13 million people.
06
Chengdu No. 9 Water Reclamation Plant
Treatment capacity: 1,000,000 m³/d (700,000 m³/d in the first phase, 300,000 m³/d in the second phase)
Main process: AAO process
Operating unit: Chengdu Drainage Co., Ltd. Ninth Reclaimed Water Plant
Design unit: China Municipal Engineering Southwest Design and Research Institute
Effluent standard: "Water Pollutant Discharge Standard for Minjiang and Tuojiang River Basins in Sichuan Province" (DB51/2311-2016)
Water operation time: 2014 (phase I), 2015 (phase II)
Total investment: 1.155 billion (upgrading and transformation)
Chengdu No. 9 Water Reclamation Plant is the largest water reclamation plant in southwest China, with a total design scale of 1 million tons per day, a service area of about 195 square kilometers, and a population of 6 million people. Among them, 300,000 m³/d per day is used as reclaimed water, which is mainly used to replenish water to Qingshui River, Jincheng Lake and other rivers and lakes in Chengdu. The project was completed in two phases, the first phase has a design scale of 700,000 m³/d per day, started in 2011 and was completed and put into operation in 2014, mainly used to build the first and second sewage treatment plants that have been demolished; The second phase of the project, with a design capacity of 300,000 m³/d per day, started construction in 2013 and was completed and put into operation in 2015. At present, the project is being upgraded and will be completed soon.
After the upgrading and transformation of the ninth plant, the treatment capacity remains unchanged, but two new process treatment units will be added, and the most mainstream high-density sedimentation tank + denitrification filter treatment process will be adopted. The three-stage treatment process of multi-mode AAO+long-fiber filter + ultraviolet disinfection/chlorine disinfection was adopted before the upgrading and transformation, and the AAO+ high-density sedimentation tank + denitrification filter + ultraviolet disinfection/chlorine disinfection process was adopted after the upgrading and transformation.
07
Zhengzhou New District Sewage Treatment Plant
Treatment capacity: 1,000,000 m³/d (650,000 m³/d in the first phase and 350,000 m³/d in the second phase)
Main process: AAO process
Operating unit: Zhengzhou Sewage Purification Co., Ltd
Design unit: Shanghai Municipal Design Institute
Effluent standard: Class A; Quasi-Class III water body
Water operation time: May 2016 (phase I) Expected to end 2022 (phase II)
Total investment: 3.456 billion yuan (phase I), 4 billion yuan (phase II)
Zhengzhou New District Sewage Treatment Plant is the first million-ton urban sewage treatment plant in Henan Province, and it is also the largest, most complete and highest standard sewage treatment plant, which undertakes 40% of the sewage treatment capacity of Zhengzhou City, and has sludge treatment and disposal and reclaimed water treatment capacity. The sewage treatment adopts the multi-mode AAO process, the sludge adopts the combined process of medium-temperature anaerobic digestion and sludge thermal drying, and realizes the "intelligence" of operation management through the intelligent control system, precise aeration control system and intelligent dosing system, which minimizes carbon emissions, and plays an important role in Zhengzhou's water pollution control and energy conservation and emission reduction.
The second phase of Zhengzhou New Area Sewage Treatment Plant is located in Yaojia Town, Zhongmu County, covering an area of 389.61 acres, and the service scope includes Wangxinzhuang sewage system, Zhengzhou International Logistics Park system and Zhongmu and Cultural and Creative Park group systems.
The construction content of the project is 350,000 tons/day sewage treatment facilities, the first phase of 650,000 m³/d scale upgrading and transformation, and 1,000 t/d sludge treatment facilities, and the main indicators of effluent meet the class III standard of river surface water. After the completion of the project, it will become the first million-ton sewage treatment plant in the Central Plains, marking a new level of sewage and sludge treatment capacity in Zhengzhou and effectively improving the water ecological environment of Zhengzhou.
08
Gaobeidian Sewage Treatment Plant
Capacity: 1,000,000 m³/d
Main process: traditional activated sludge method (AO), advanced treatment of reclaimed water adopts the process of "denitrification biological pool + ultrafiltration membrane".
Operating unit: Beijing Urban Drainage Group Co., Ltd
Design unit: Beijing Municipal Engineering Design and Research Institute Co., Ltd
Effluent standard: surface class IV
Water operation time: 1993 in the first phase; Phase II 1999
Total investment: 1.644 billion yuan
On December 24, 1993, the opening ceremony of the first phase of the "Gaobeidian Sewage Treatment Plant" using the activated sludge process was held on the square of the Gaobeidian Sewage Treatment Plant on the bank of the Tonghui River, which marked the successful completion of the largest urban sewage treatment plant in the mainland at that time.
At the beginning of April 1994, the trial operation of sewage treatment was successful, the treatment effect met the design requirements, and the effluent quality exceeded the national discharge standard at that time, and finally realized the expected benefits of the project.
Gaobeidian sewage treatment plant is a key environmental protection project to solve the pollution of Tonghui River, it is the largest sewage treatment plant in China at that time, advanced process equipment, its service scope includes the old city and the eastern suburbs of the industrial zone, with a total area of 96 square kilometers, its completion makes 1/4 of Beijing's urban sewage treatment.
The second phase of the Gaobeidian Sewage Treatment Plant started in 1995 and was completed and put into operation at the end of 1999, expanding the treatment capacity to 1 million m³/d. The project was designed by Beijing Municipal Engineering Design and Research Institute, constructed by Beijing Municipal No. 4 Construction Engineering Co., Ltd., and won the Tien-yow Jeme Civil Engineering Award (1999).
09
Wuhan Beihu Sewage Treatment Plant
Treatment capacity: 800,000 m³/d, 1.5 million m³/d in the long term
Main process: multi-mode AAO+ advanced treatment and high-concentration AAO+MBR
Operating unit: Wuhan Three Towns Industrial Holding Co., Ltd., Wuhan Water Affairs Group
Design unit: Wuhan Municipal Engineering Design and Research Institute Co., Ltd., China Municipal Engineering Zhongnan Design and Research Institute Co., Ltd., Pan-China Construction Group Co., Ltd
Effluent standard: Class A
Water operation time: 2020
Total investment: 4.5 billion yuan (phase I) with a total scale of more than 7 billion yuan
Wuhan Beihu Sewage Treatment Plant is located on the east side of the intersection of Tengfei Avenue and Bajifu Road in Wuhan Chemical New Area, and the Standing Committee of Wuhan Municipal Government agreed to relocate and upgrade the original Shahu, Erlangmiao and Luobuzui Sewage Treatment Plants.
Unlike large-scale sewage treatment plants such as Bailonggang in Shanghai, which are built in multiple phases, the Beihu Sewage Treatment Plant is the largest in China in terms of one-time construction, with a designed treatment capacity of 800,000 m³/d and a long-term treatment capacity of 1.5 million m³/d. The total service area is about 130 square kilometers, and the total service population is about 2.49 million.
10
Stonecutters Island Sewage Treatment Works, Hong Kong
Processing capacity: 1.76 million m³/d
Main process: chemically enhanced primary sewage treatment
Operating Units:/
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Effluent standard:/
Water operation time: 2001 (phase 1), December 2015 (phase 2)
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With a treatment capacity of 1.76 million m³/d, the Stonecutters Island Sewage Treatment Works in Hong Kong, China, uses chemically assisted primary treatment methods and advanced equipment to treat wastewater. Due to its results, the plant is regarded as one of the most efficient facilities in the world for chemically enhanced primary wastewater treatment. The sewage treatment plant was fully put into use in 2001, the dosing agent is ferric chloride and polymer, the treatment process can remove about 80% of the suspended solids and 70% of the BOD in the sewage, the treatment standard reaches SS<55mg/L, BOD5<75mg/L, and the treated effluent will be discharged in the western waters of Victoria Harbour through the deep-sea discharge pipeline.
In addition, in order to purify the harbour and improve the use of sewage and energy, the Stonecutters Island Sewage Treatment Works in Hong Kong has built the first hydroelectric turbine system to generate electricity through the flow of sewage, which can provide a certain amount of hydraulic energy to drive the turbine generator to generate electricity while discharging the purified sewage.