Request for Quotes (RFQ) is an invitation to suitably experienced suppliers interested in being engaged for Supply of Lime Silo at the Te Marua Water Treatment Plant.

The Te Marua water treatment plant requires an upgrade to increase capacity to 140 ML/d, improve redundancy and resilience, and continue to meet the requirements of the Drinking-Water Standards for New Zealand 2005 (Revised 2018) (DWSNZ). This will be achieved by the installation of a new dissolved air floatation (DAF) system and increasing the capacity of the existing chemical dosing and solids-handling systems. The lime storage and dosing at the Te Marua Water Treatment Plant will be upgraded to achieve the increased capacity. The upgrade includes the provision of a new lime silo to replace the existing lime silo which needs to be removed.

This contract is for the supply of a new painted 40 tonnes lime silo complete with ancillary equipment and silo restraint / support components. Also included is the design of the silo foundations. The Respondent shall allow for work with Wellington Water’s Design Consultant for design of connections between the silo and existing plant.

The lime silo shall be delivered to the Te Marua WTP site for installation by the Site Installation Contractor. The installation of all compressed air supply and lime transfer pipework connecting the new lime silo with the existing lime hoppers will be carried out by the Site Installation Contractor under separate contract.