Qatar treated sewage water output rises three-fold
The Public Works Authority (Ashghal) is working in coordination with the Standing Committee of Water Resources to use treated waste water as a primary resource for cooling projects.
Qatar’s treated sewage water production has increased three-fold in the past decade, from 55 million cubic meters in 2005 to 169 million cubic meters in 2014. Plans are afoot to use treated wastewater for district cooling plants and construction purposes.
The Public Works Authority (Ashghal) is working in coordination with the Standing Committee of Water Resources to use treated wastewater as a primary resource for cooling projects.
Desalinated water will be a secondary resource to be used temporarily in emergencies and in cases where treated wastewater is not available.
“The purpose of wastewater treatment plants in the country is not only to protect the environment, but also to increase water resources,” Ashghal President Nasser bin Ali Al Mawlawi told a GCC workshop on wastewater treatment on Tuesday.
Ashghal has set design standards for treated water produced from main treatment plants. These include multiple processing stages to reach advanced tertiary treatment levels by means of microfiltration membrane technologies which have higher efficiency than sand filters, reported The Peninsula.
This has been implemented in the West Doha plant (Al Sailiya), the South Doha plant, the Industrial Area plant, and the Doha North new treatment plant.
The technology is also being implemented at Al Thakira treatment plant to produce high-quality treated wastewater for use in non-restricted irrigation.
“For the past 10 years, Ashghal’s production of high-quality treated sewage water has increased from 55 million cubic meters in 2005 to 103 million cubic meters in 2010. In 2014, production of treated wastewater reached about 169 million cubic meters,” Al Mawlawi said.
“In addition to the use of treated wastewater for irrigation and green spaces, the country is moving to expand its use for cooling and construction purposes.”
Ashghal is executing some key sewage water treatment plant projects which are expected to increase the capacity of treatment plants from 183 million cubic meters now to 366 million cubic meters over the next five years. The projects include the Sewage Treatment Plant in Al Thakira, the Fifth Package of the Expansion Works for Doha West Sewage Treatment Plant, the Doha North Sewage Treatment Plant, and the Second Package of Expansion works for Industrial Area Sewage Treatment Plant.
This is in addition to a major Sewage Treatment Plant project in Southern Doha, with a capacity of 500,000 cubic metres per day. The project is part of the Inner Doha Re-sewerage Implementation Strategy.