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August 23, 2013

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City lays largest sewage pipeline

Shanghai will have the country’s largest waste water pipeline ready by the end of 2014 that will greatly boost the city’s ability to transport and process sewage water.

The pipeline, in suburban Pudong’s Chuansha area, will also serve the Disneyland Theme Park which is expected to open in 2015, as well as the downtown industrial and residential sewage, people involved with the project said.

The existing pipelines that connect to the Bailonggang Sewage Plant — Asia’s largest — is unable to manage the rising volume that poses a threat to the Huangpu River.

“Still we face many challenges as the new pipeline will be laid below the Maglev line, jet fuel pipes that connect the Pudong International Airport and some creeks,” said Yang Yi, an engineer with the builder, Shanghai Urban Construction Group.

Keeping an eye on subsidence and cracks on the pipes will be their main focus, Yang said.

The tagging of pipe tunnel duct pieces with Radio Frequency Identification Device (RFID) technology will help in collecting data about leaks, cracks and subsidence, which will then be passed on to the engineers for analysis, precaution and necessary adjustments, the company said yesterday.

The 3.3 billion yuan pipeline project is expected to be in operation by the end of next year, as demanded by the state-owned operator, Shanghai Sewerage Co.

The existing pipes can handle about 1.72 million cubic meters per day, but in peak seasons, like in July, the volume reaches more than 1.9 million cubic meters a day.

Shanghai’s sewage disposal capacity is expected to increase by 800,000 cubic meters per day — equivalent of 355 standard size swimming pools, or more than 10 percent of the city’s current capacity — when the second phase of the Bailonggang Sewage Plant starts operations later this year.

The new pipes, which is 4 meters in diameter, can transport up to 2.2 million cubic meters a day.

It will eventually increase the capacity of the Bailonggang Sewage Plant  to up to 2,800,000 cubic meters per day. 



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