Ashghal's D-Line project to pump 22.5mn m3 treated wastewater annually

Around 22.5mn cubic metres treated wastewater will be pumped annually through the Treated Sewage Effluent Transmission Main and Pumping Station (D-Line) project by the Public Works Authority (Ashghal).According to an official statement, Ashghal continues to implement the project which will transfer treated wastewater from the Doha South Sewage Treatment Works in Nuaija area to the Seasonal Storage Lagoons.This is with the aim of balancing the deficit and surplus of the treated sewage water and achieving its optimal use.Eng. Abdulrahman Mohamed al-Sulaiti, head of the Treatment Plants Projects and Treated Water Networks Section in the Drainage Networks Projects Department, said that the project is part of Ashghal’s efforts to benefit from treated wastewater and encourage efficient and sustainable consumption of water resources.This is in line with the sustainable development objectives and the Qatar National Environment and Climate Change Strategy, which includes reusing 100% of treated wastewater by 2030."Ashghal pays great attention to reusing treated wastewater as part of its efforts to preserve the environment noting that the project will pump approximately 22.5mn cubic metres of treated wastewater annually,” he noted.Eng. Walid al-Ghoul, project manager at Ashghal’s Drainage Networks Projects Department, said the project will balance the deficit and surplus of treated wastewater (treated sewage effluent, TSE) by storing the surplus during winter months to be reused during the summer when demand for TSE is high to supply feed farms with irrigation water, and thus reducing the use of groundwater."The D-Line project also aims to supply the Ghadeer Feed Farms with irrigation water during the summer, and will meet the expected future demands of additional feed farms such as Hassad farms in Al Rakhiya and others,” he explained.The D-Line project consists of a 65km TSE transmission pipeline that runs at a depth of approximately 2.5-5.5m underground.This starts at the existing Doha South Sewage Treatment Works (STW) and is to be laid along the main service route of Salwa Road passing through the Rakhiya farms and surrounding areas and up to the TSE Storage Lagoons where excess treated wastewater is stored.The project includes the construction of a pumping station with a capacity of 120,000 cubic metres/day which will pump the TSE flow from the Doha South STW to the seasonal storage lagoons.This is in addition to the mechanical, electrical and related equipment works.The treated sewage transmission pipelines are equipped with advanced automation technology and systems for monitoring, controlling and leak detection.The D-Line project comes in line with Qatar’s objectives in the field of environmental sustainability and its efforts to preserve the environment and water resources for future generations, as part of the Third National Development Strategy 2024-2030.