Only one consultancy firm has responded to a request for proposals to oversee the upgrading of the secondary treatment plant at Tubli in Bahrain.

Germany’s P2M Berlin submitted a bid of BD684,235 ($1.8m) to oversee the implementation of Hybacs technology, which is used to process wastewater at the Tubli Water Pollution Control Centre (WWPC).  Bahrain’s Works Ministry is the client on the project.

The project aims to raise the efficiency of the Tubli plant. The UK’s Bluewater Bio has been selected to carry out the upgrade. Its contract, worth BD7.3m, covers the upgrade and expansion of the plant, which currently serves a population equivalent to about 800,000. 

The existing secondary wastewater treatment plant at Tubli was originally designed for a capacity of 200,000 cubic metres a day. However, as a result of the rapid urban development and economic boom in the Bahrain, the plant has become excessively overloaded, causing damage to the ecology of Tubli Bay.

Following the Hybacs upgrade, the treatment capacity of the overall secondary treatment plant will be 300,000 cubic metres a day.