[photopress:zones_Wuhan_economic_dev_zone.jpg,full,alignright]Wuhan Economic-Technological Development Zone has installedÂ a wastewater treatment plant thatÂ 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 operationÂ 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