Ashghal has honoured the contractor working on the massive Doha West Sewage Treatment Works Project (Extension 5) for achieving 2 million man-hours without loss time injuries.

The ceremony was held at Ashghal’s headquarters, where Drainage Networks Projects Department manager and senior engineer Khaled Saif al-Khayarein presented the certificate of honour to the representatives of the project contractor Suez – Marubeni joint venture.

The Doha West Sewage Treatment Works in Al Sailiya is one of the most important treatment works projects in the country. The plant started with a capacity of about 20,000 cubic meters a day. However given the growth in the country's population it was expanded several times until its capacity reached 175,500 cubic metres per day after the fourth extension. The plant currently receives approximately 200,000 cubic metres per day.

A station to receive sewage tankers was built with a capacity of about 50,000 cubic metres per day to replace Al Karaana Lagoon, which required a fifth extension to increase the plant’s capacity to 280,000 cubic metres per day.

The contractor started working on the extension project in the Second quarter of the last year and it is expected to be completed in the penultimate quarter of 2017.

The fifth extension includes secondary treatment works, system for treating and drying sludge and three-stage filtration process. It also includes the development of an advanced system to disinfect treated water in a way that does not harm the surrounding nature.

The project will also include building a pumping station for treated water.