Implementation of Odour Control Systems for Nuisance-free and Public Friendly Environment in Qatar

Abstract

The Public Works Authority (Ashghal) is contributing to the development of Qatar with the construction of first class, sustainable infrastructure with a high degree of public acceptance by utilizing best international practices. Pumping stations and sewage treatment works are traditionally constructed at the outskirts of cities, as they are generally associated with odour nuisance; however, as the cities are expanded, the facilities become part of the urban fabric and their operation becomes an issue of concern for nearby residents. To address this public concern, Ashghal has for its sewer infrastructure adopted odour emission limits as stringent as 0.5ppbV of hydrogen sulphide (H2S) and 0.5ouE/m3 of odour concentration, which are lower than recognisable levels by humans. Moreover, on the way to FIFA World Cup Qatar 2022™, Ashghal decided to install environmentally friendly and sustainable biological treatment units followed by activated carbon filters to ensure a nuisance-free environment at the existing Doha South Sewage Treatment Works (DS-STW) and the new Doha South Terminal Pump Station (DS-TPS). This paper presents methodologies for determining odour levels in existing and new units, available odour treatment technologies, and the selected treatment schemes for the above projects.