Family, today let's talk about the super large sewage treatment plants in China. They are the "invisible heroes" of the city, silently guarding our water environment!
Let's first talk about the Shanghai Zhuyuan Sewage Treatment Plant, which can be called a "giant" in terms of scale! The processing capacity has reached 3.4 million m ³/d, with 2.2 million m ³/d in the first three phases and 1.2 million m ³/d in the fourth phase. The operating unit is Shanghai Urban Investment Water Group, and the design unit is Shanghai Urban Construction Design and Research Institute. The first and second factories completed the upgrading and renovation in June 2020, and the fourth phase will also be put into use in 2024. The total investment of this project is not low, with 3.96 billion yuan used for the first three phases of construction, 1.155 billion yuan spent on upgrading and renovation, and 10 billion yuan invested in the fourth phase. It serves an area of approximately 335 square kilometers and can take care of the domestic sewage of about 6 million people! After completion, the sewage transferred from the central urban area will be treated to perfectly match the mainline transportation capacity and terminal treatment capacity, which will play a huge role in improving the water environment quality near the Yangtze River estuary in Shanghai. It is a "great contributor" to the water environment, ranking first in Asia and among the top five in the world.
Looking at the Shanghai Bailonggang sewage treatment plant again, it is also quite impressive. The processing capacity is 2.8 million m ³/d, using AAO technology, operated by Shanghai Chengtou Wastewater Treatment Co., Ltd., and designed by Shanghai Municipal Engineering Institute. It was put into operation with water supply in 1999, and the upgrading and renovation cost 7.089 billion yuan. It is located on the east side of Heqing Town in Pudong New Area, with a total area of 254.37 hectares. When it was built in early 1999, it was a pre-treatment plant. Later in 2008, it was upgraded and expanded, and the service area was expanded to Minhang, Xuhui, Huangpu, and areas along Pudong, with a service area of about 1060 square meters. It is the third largest factory in the world and the largest in Asia! The annual sewage treatment capacity is about 1.1 billion cubic meters, and the annual COD reduction is over 280000 tons, accounting for one-third of Shanghai's emission reduction, making great contributions to the reduction of water pollutants in Shanghai. And with the development of the city, it is constantly expanding and upgrading, striving to meet the growing demand for sewage treatment.
The Hangzhou Qige Wastewater Treatment Plant is also not to be underestimated. It is one of the "Five Billion" engineering projects in Zhejiang Province, with a treatment capacity of 1.5 million m ³/d. It is divided into four phases: 400000 m ³/d in the first phase, 200000 m ³/d in the second phase, 600000 m ³/d in the third phase, and 300000 m ³/d in the fourth phase. The operating unit is Hangzhou Water Group, and the design unit is China Municipal Engineering North China Design and Research Institute Co., Ltd. From the first phase of water supply in August 2003 to the completion of the fourth phase in September 2019, the total investment exceeded 4.3 billion yuan. It undertakes over 95% of the domestic sewage treatment capacity in the main urban area of Hangzhou, mainly responsible for sewage treatment in the northern region of Hangzhou and the Xiasha Economic Development Zone. The AAO+deep bed filter process used in the fourth phase of the project is very distinctive. Compared with traditional flat sewage treatment plants, the semi buried design allows for high integration of treatment units, saves land, and has strong sealing capabilities. In addition, the advanced biological deodorization system effectively controls odor emissions and improves the surrounding environment.
The Shenyang Southern Sewage Treatment Plant is a key project in the construction of Shenyang's ecological city, with a treatment capacity of 1.3 million m ³/d, divided into Phase I of 600000 m ³/d, Phase II of 200000 m ³/d, and Phase III of 500000 m ³/d. The operating unit is Shenyang Zhenxing Environmental Protection Co., Ltd., and the design unit is China Municipal Engineering Northeast Design and Research Institute Co., Ltd. The first phase was completed in October 2013, the second phase was completed in December 2019, and the third phase was also completed by the end of 2021. The total investment for the first and second phases was 1.35 billion yuan, and the third phase was 1.2 billion yuan. The treatment process adopts an improved AAO process, and the designed effluent water quality meets the national "Pollutant Discharge Standard for Urban Sewage Treatment Plants" Level A standard. The treated effluent is discharged into the Hun River, mainly for the treatment of sewage in the Yuhong New City area of the flood district, Yuliang area of the Tiexi Economic Development Zone, as well as the northern sewage system and the old urban area of Tiexi District, contributing to the improvement of water environment in Shenyang.
The Guangzhou Liede Wastewater Treatment Plant has a designed capacity of 1.2 million m ³/d and adopts an improved AAO process. It is operated by Guangzhou Water Purification Co., Ltd. and designed by Guangzhou Municipal Design and Research Institute. The plant was built in four phases, from the first phase of water supply in November 1999 to the fourth phase of completion in June 2010. It is located to the east of Liede Village, Tianhe District, and on the north bank of the the Pearl River of the South China Bridge. It covers an area of 39hm ², covers most of the central area north of the the Pearl River front channel, serves an area of 141.5 square kilometers, and serves a population of about 2.13 million people. Together with six sewage lift stations, it guards the sewage purification work in this area.
These super large sewage treatment plants are like the "sewage guardians" of the city, working day and night to turn the sewage generated in our daily lives into clean water that meets the standards, and then discharge it back into nature, protecting our rivers, lakes, and seas. They are not only an important component of urban infrastructure, but also a key link in the construction of ecological civilization. With the continuous advancement of technology and the development of cities, we believe that these sewage treatment plants will become increasingly efficient in the future, creating a better living environment for us.
