| Description: |
- The Manitoba Water Services Board requests your proposal for the supply and related support services for the Treatment Equipment Supply and Piloting for the RM of Macdonald Water Treatment Plant (WTP) Upgrades to be located in the RM of Macdonald, Manitoba, Canada.
- Upon the completion of a review of proposals received, it is the intent of the MWSB to pre-select the successful Proponent and incorporate it into the Construction Contract for the RM of Macdonald WTP Upgrades project.
- The overall Construction Contract will be for the RM of Macdonald WTP Upgrades which is anticipated to be tendered in the May of 2024 and awarded to a Construction Contractor if project is within budget.
- The Supply Contract referred to in this RFP concerns the supply of equipment and services for a Membrane Water Treatment System to be installed at the WTP in Sanford, Manitoba, as part of the RM of Macdonald WTP Upgrades project. The equipment will include UF Membrane equipment, Reverse Osmosis Membrane equipment, Greensand Filter equipment, and ancillary items necessary for a fully
functional treatment package, as further described in this RFP.- The Work under the Supply Contract will be performed in two phases, as further described in this RFP:
- Phase 1: PART A1 Shop Drawings and PART A2 Pilot Testing Work
- Phase 2: PART B Equipment Supply and PART C Commission and Performance Testing Work
- MWSB will award the successful Supplier both Phase 1 and Phase 2 work for the agreed to pricing. The Supplier will only proceed with Phase 1work with the initial award of the Supply Contract. The Supplier will then proceed with Phase 2 work only when a Novation Agreement has been signed and the Supply Contract has been transferred to the Construction Contractor.
- The equipment supplied under the Supply Contract will be field installed by others under the Construction Contract. The Supplier shall provide supervisory personnel to witness, coordinate, and provide all necessary instructions to ensure satisfactory off-loading, storage and installation on site and testing and commissioning of the equipment supplied. The Construction Contractor will provide all necessary labour and equipment to off-load, position and install the equipment under the supervision of the Supplier.
- Project timelines are:
- Anticipated date of award and signing of Supply Contract to successful Proponent is:
- February 9, 2024
- This triggers the commencement of Phase 1 Works for Part A1 and A2.
- Part A2 Piloting is to take place as soon as possible. The pilot equipment should be ready to be on site within 30 days of award of the Supply Contract. It is critical to pilot during coldest water conditions.
- Anticipated date of award of Construction Contract to Construction Contractor, and execution of Novation Agreement is:
- August 1, 2024
- This triggers the commencement of Phase 2 Works for Part B and C.
- Total Project Completion with UF/RO and Greensand Filter commissioning complete is anticipated to be:
- Conceptual Interim Delivery Targets during construction (may change based on actual Construction Contractor Schedule):
- Completion of the WTP expansion foundation (prior to superstructure erection) that would be ready for placement of the UF Stainless Steel Tankage Equipment and Filter Vessels is anticipated to be March 2025.
- Existing WTP area ready for placement of new RO train skid(s) will be ready for installation after March 2025.
- Completion of the WTP Upgrades and plant expansion that would be ready for the remainder of the UF, RO and Greensand equipment installation is anticipated to be July 2025.
- The existing WTP utilizes UF/RO treatment of surface water for the reduction of hardness and organics. The facility is challenged with manganese fouling of membranes and frequent replacement of UF membranes. The RO by-pass flow ranges from 0% to 10% to be able to add some stability back to finished water, but elevated manganese limits the by-pass amount.
- The WTP utilizes GE 1500 Series UF Zeeweed installed in 2010 (new modules in 2023). The intent is to completely replace these skids with a new reinforced immersed UF membranes based on the Zeeweed 500D design or equivalent membranes in new stainless steel tanks (or other module arrangement). There are currently two (2) 48 module UF trains, each rated for 46 L/s.
- Life expectancy of the UF models has been 2-3 years before replacement, and life expectancy of the RO elements has been 5 years before replacement. The reinforced immersed UF membranes like the Zeeweed 500D elements are expected to provide a more robust element for cleaning as well as a longer warranty (10 year pro-rated) to improve life expectancy and reduce lifecycle costs.
- The WTP utilizes GE Low Energy Reverse Osmosis equipment for organics and hardness removal and were also installed in 2010 (new elements installed in 2023). There are currently two (2) RO trains with each rated for 30 L/s permeate flow at 75% recovery. Each skid has 138 elements in a 15:8 array.
- The existing plant was designed to produce 72 L/s with 60 L/s permeate flow and 12 L/s RO by-pass flow. The by-pass flow has generally been eliminated due to elevated dissolved manganese post UF.
- The proposed upgrades will increase plant capacity to 120 L/s with 90 L/s permeate flow from RO and 30 L/s (25%) by-pass around the RO trains. Greensand filters on the by-pass are to address dissolved manganese in this stream.
- Source water for the plant will remain the same, from the La Salle River and stored in raw water impoundment ponds. The main parameters for treatment in the raw water are Hardness, Total Organic Carbon (TOC), manganese and algae.
- At current flows, the raw water impoundment provides over 100 days of retention between the River and the WTP inlet. The large storage volume is prone to reducing manganese to a dissolved state and frequent algae blooms. The pond cells are all continuously aerated to promote mixing.
- Additional details about the treatment equipment included:
- The design intent is to provide four (4) UF trains capable of producing at least 150 L/s continuously for 24 hours per day. The intent is to continuously feed the RO trains 150 L/s and not require any pauses in RO treatment over the day. This is currently conceptualized as four (4) 50 L/s UF trains; where all four trains in operation are producing 41 L/s each, but as a train is taken offline for maintenance cleans or backwashes, the remaining three trains will operate at 50 L/s to maintain continuous 150 L/s flow to RO trains. The UF package will include new CIP and backwash systems, new air systems, and new stainless steel tanks for membrane cassettes. The Supplier will be required to provide a new control package for the UF package, where
the current UF programming is to be abandoned with the upgrades. - The design intent is to supply two (2) new RO trains rated for 30 L/s permeate flow with at least 75 % recovery. Higher recovery rates would be considered and could have higher technical scores. The Supplier will also supply a new RO CIP tank and skid (replacing the existing RO CIP) for the new RO trains AND the existing RO trains. The Supplier will be required to provide a new control package for the RO trains that will include the new RO trains as well as the two (2) existing trains and CIP system. The current RO programming is to be abandoned with the upgrades.
- The design intent is to provide two (2) Greensand filters capable of producing at least 30 L/s total capacity for RO by-pass flow. The Greensand filter package will include electric actuated valves and air scour blower. Backwash pump and all filter face piping will be by Construction Contractor. The Supplier will be required to provide a filter control package for the
Greensand Filters.- Note that this RFP will identify the RO Equipment Supply and Greensand Filter Package Supply as Provisional Items, and the MWSB reserves the right to delete the Provisional Item from the Work and reduce the total Proposal price in order to maintain project budget.
- This RFP is also for the supply of pilot testing with a final pilot summary report. Piloting will be for the treatment package of UF with Greensand filtration on the UF filtrate. RO piloting is not required. The existing RO permeate can be used in creating finished water blend rates. Piloting will include coagulation, flocculation, screening pre-treatment, and required chemical feed systems including oxidation. The pilot equipment and pilot services shall be installed inside the existing Water Treatment Plant. The MWSB will coordinate and pay for the costs of mechanical and electrical connections and the offloading of the pilot equipment into the plant. This is an opportunity to demonstrate performance and efficacy of the UF and Greensand
technology against the Proponent’s written Process Guarantee and stated operation and maintenance requirements.- It is the intent that the pilot testing capture the cold water conditions in the winter 2024 period. Therefore the Supplier must be able to supply the pilot within 30 days of Supply Contract award to have a pilot running in February 2024.
- The successful Supplier shall prepare a detailed set of shop drawings and equipment supply lists for the Engineer to incorporate into the overall design of the RM of Macdonald WTP Upgrades project.
- Time is of the essence for the delivery of Shop Drawings for the timely tendering of this project. Late deliveries may incur liquidated damages.
- It is anticipated that the Supplier will provide a series of Priority Shop Drawings for the Engineer to continue with WTP expansion design. Nonpriority Shop Drawings which are not detrimental to plant design could be submitted at a later date as noted.
- The Supplier will provide a schedule of delivery for Shop Drawings if the packages will be broken up into more than the two noted submissions.
- The new and existing building size is limited, and Proponents must recommend equipment per the specified size constraints to fit in the allocated floor space. The Proponent is encouraged to propose an optimized system that takes the most advantage of floor space.
- The existing treatment equipment will operate during the construction of the new WTP facility expansion. The treatment equipment will be phased in with the new UF membranes going into operation before the existing UF membranes can be removed to make space for other plant upgrades.
- Once the old UF trains are removed, only then can the new RO trains be installed due to current space constraints in the plant.
- A 24-month Process Guarantee will be required under the Supply Contract and shall be proven by formal acceptance of start-up, commissioning, and performance testing period.
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