Using the latest up-to-date technologies in treating the raw sewage it receives from Doha North main pumping station (PS70), the Doha North Sewage Treatment Works (STW) is considered as one of the major strategic projects in Qatar. The facility produces high quality treated effluent for non-potable use, such as irrigation for public parks and landscaped areas, reducing the reliance on drinking water supply.
As Part of the Project, the Public Works Authority (Ashghal) takes the initiative, the first of its kind in Qatar, to grow up to 95,000 trees over approximately 12 square kilometers, within the buffer zone surrounding the plant. Different types of trees, some of them were brought from different parts of the world, which are appropriate to the desert environment, will be planted; reeds and shrubs will be cultivated and an artificial lake will be established. Currently, approximately 40,000 trees have been planted, while the rest is supposed to be installed by the second quarter of 2017. This extensive landscaping that is being implemented for the first time in Qatar surrounding the treatment plant helps to increase vegetation in the country.
Once the planting process within the landscaped area is completed, the desert area surrounding Doha North STW will be transformed into a man-made forest. Trees have been carefully selected as they do not consume water in large quantities, and a variety of flowering trees were planted to line the entrance roads to the STW. After the construction of the permanent roads leading to the Treatment Works and the vegetation reach the required size, the possibility to open the landscaped area to the public to enjoy the greenery and watch the types of trees will be studied. Whenever it is opened, the visitors can watch the artificial lake that was created as part of the beautification and landscaping works around the station, where high quality treated water is pumped into it.
Phase one of the works is designed for a peak capacity to treat wastewater of up to 244,000 cubic meters per day and will serve a projected population of over 900,000 (in the year 2020). This modern facility features advanced biological treatment processes as well as ultra-filtration membrane, which separates large particles and small granules from the water, and then it uses ultra-violet technologies to produce high quality reclaimed water for re-use, such as treated effluent for non-potable use. In addition, the facility is equipped with a Thermal Drying Plant that processes the wastewater sludge, generated during the treatment process, to pellets for safe disposal, all in accordance with international standards. The facility is also the first to have the comprehensive odour control system to minimize the impact on the surrounding environment.
The state-of-the-art treatment plant is located in the Umm Slal Ali area which lies to the north of Doha. The catchment extends to Umm Slal area, 25 km north of Doha and includes Al Kheesa, Al Khariatiyat, Al Duhail and the Pearl and Lusail developments to the east. It noteworthy that Doha North Sewage Treatment Plant was completed in December 2015, and it was in full operation after it had all inspection and testing needed by all concerned entities and authorities in July 2016. The final completion of all landscaping and beautification works in the area surrounding the STW will be completed by the Contractor by the second quarter of 2017.
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