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$995mn sewage treatment plant opens in Qatar

It is the first sewage treatment plant in Qatar to use advanced treatment techniques such as ultrafiltration and ultra-violet technologies to produce high quality reclaimed water for use for irrigation

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Qatar, Waste management, Waste water, Wastewater, Water treatment, News

Qatar has launched the new Doha north sewage treatment works (STW) with a daily flow capacity of 46,000 cubic meters, the country’s public works authority (Ashghal) has said.

The $995.8mn STW is the first sewage treatment plant in Qatar to use advanced treatment techniques such as ultrafiltration and ultra-violet technologies to produce high quality reclaimed water for use for irrigation.

The plant is located in Umm Salal Ali, 25km to the north of Doha.

Ultrafiltration is an ultra-membrane filtration technique that separates large molecules and small granules from water. The plant also uses ultra-violet technologies for wastewater treatment

The first phase of the project included construction of the main treatment plant to receive and treat sewage, and has been designed to treat up to 245,000 cubic metres of sewage a day, serving a projected population of over 900,000 people by 2020.

STW has started receiving sewage flows from the main pumping station in northern Doha (PS70) in Al Kheesa. The sewage flows are estimated at 46,000 cubic metres a day.

The Doha North STW became operational last December after a year of inspection and testing processes completed by the Civil Defence and other entities, said a statement.

The second phase of the project includes construction of a thermal drying plant (TDP) within Doha North STW. The TDP will process sludge or solid materials generated from the sewage treatment process to dispose them according to international standards for safe disposal.

It will receive and treat sludge generated from Doha North STW and other sewage treatment works in Qatar.

The sludge is dewatered, processed through the thermal dryers to finally produce dried pellets bagged and stored for distribution.

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