Wuxi water avoiders before new installation

Siemens plans to supply a Membrane Bio-Reactor (MBR) system to the sewage treatment plants at Wuxi New Zone, an industrial development area, to expand its waste treatment capacity.

The MBR system is scheduled for a trial run by the end of 2008. By then, 30,000 cubic meters of sewage will be disposed of every day, thus helping Wuxi heighten urban centralized sewage treatment ratio to 90% by 2010.

As an important water source for a population of 30 million, Taihu Lake was once fouled by industrial wastewater. To clean Taihu Lake, Jiangsu Province is now upgrading the sewage treatment plants in pan- aihu cities.

MBR system will better service sewage treatment for 100 hi-tech enterprises in Wuxi New Zone, of which the sewage to be disposed increases 20-25% year on year.

The MBR system combines membrane technology and traditional sewage treatment technology to greatly cut nitrogen and phosphorus in the water. The treated water can be discharged to river or recycled.

Siemens’ MBR system provided reclaimed water for the Olympic Green, the Beijing Olympic Park.  There is no information as to the way the dignitaries present opened the facility.
Source: Trading Markets

Taihu Lake, Wuxi

Siemens will help Wuxi City in East China’s Jiangsu Province recover the water quality of the Taihu Lake.

Siemens plans to supply a Membrane Bio-Reactor (MBR) system to the sewage treatment plants at Wuxi New Zone, an industrial development area, to expand its waste treatment capacity.

The MBR system is scheduled for trial run by the end of 2008. By then, 30,000 cubic meters of sewage will be disposed every day, thus helping Wuxi heighten urban centralized sewage treatment ratio to 90% by 2010.

As an important water source for a population of 30 million, Taihu Lake was once fouled by industrial wastewater. To clean Taihu Lake, Jiangsu Province is now upgrading the sewage treatment plants.
Source: Trading Markets

Impression of an ecocity

Construction of the transport infrastructure within the 4-sq-km Sino-Singaporean Eco-city start-up area of Tianjin has begun and full construction of the 30 sq. km. city will start next month.

In April, the Chinese and Singaporean governments approved a development plan for the eco-city. It will be the second flagship Sino-Singaporean cooperation project, the first being the Suzhou Industrial Park.

Tianjin eco-city

The green development will help Tianjin, a city of limited resources, in having sustainable development nearby.

The key performance index includes air, water, transport, forestation, energy efficiency and waste management.

It will not, like certain other cities, pursue a ‘zero CO2 emission’.

More than 90% of the traffic in the eco-city will be low-pollution public transport.

The eco-city, which is located 40 km from Tianjin city and 150 km from Beijing, will cover 10 sq km of salt pan, 10 sq km of desert and 10 sq km of watered, but low quality, land.

Located along the Jiyun River in Tianjin’s Hangu district it will have residences, commercial space and factories, all of which will comply with international standards of energy use and environmental protection.
Source: China Daily and Green Leap Forward

[photopress:zones_Wuhan_economic_dev_zone.jpg,full,alignright]Wuhan Economic-Technological Development Zone has installed  a wastewater treatment plant that  appears to be both efficient and energy saving.

Wuhan is one of China’s largest cities (population over seven million) and the capital of Hubei Province. Because Wuhan is located where the Yangtze River and the Han River join, the treatment of municipal and industrial wastewater is of great importance.

The wastewater treatment plant of Wuhan Economic-Technological Development Zone is located in a fast-developing area of the city.

Before the new plant was put into operation, Wuhan’s wastewater treatment percentage totaled only 21%, far from the state requirement of 60% for 2005. All untreated domestic wastewater was discharged directly into the local Taizi Lake.

In the zone the daily wastewater discharge amounted to as much as 40,000 tons.

The water quality of the local Taizi Lake deteriorated to Grade V lower than which you cannot get.

The answer was a plant built by Sanitaire using diffusers with a higher oxygen transfer efficiency and a lower system pressure head loss which together made the cost of the overall aeration system operation  relatively low.

This is but one example of the efforts being made across China to bring the development zones into line with the standard of 60% treatment.
Source: Water Online