Oman’s proposed new sewage treatment plant (STP) project, estimated to cost about $100 million, has attracted tenders from three global firms, a report said, adding that the bids are currently under evaluation.

The plant in Misfah in Bausher Wilayat will cater to sewage transported by bowser trucks long after much of Muscat has been connected to a world-class sewerage collection system, added the Oman Observer report.

Bids have been received Spanish-based global integrated water technology specialist Abeima - which has submitted the lowest bid - Suez Environment and CCC and from India-based multinational VA Tech Wabag, the report said.

The successful bidder will secure a contract to design, build and operate the tanker STP at Misfah, which is expected to start operations by the end of 2018.

Haya Water (Oman Wastewater Services Company), a wholly government-owned entity, is building a state-of-the-art sewerage collection and treatment system covering much of Muscat Governorate at a cost of around RO2 billion ($5 billion).

According to plans drawn by Haya Water, the STP will have a capacity of 32,000 cu m per day with an expansive tanker queuing area to accommodate up to 74 tankers at a time.

The facility will also come with 48 tanker discharge bays equipped with flow meters and online quality monitors, the report said.

At the downstream end of the facility, a pipeline will be installed to carry treated effluent to Haya Water’s storage tanks at Al Ansab located some 14 km away.