Jamaica - Design and construction services.

Description

K-FACTOR WWTPs REHABILITATION & UPGRADING PROGRAMME (Phase 1) and will be funded by the National Water Commission Design - Build (and Operate) Works for the Rehabilitation and Upgrading of 3 NWC WWTPs located in Parish of St. Catherine (namely: Claremont, Nightingale and Old Harbour Villas WWTPs)

The Claremont Wastewater Treatment PlantThe Claremont Wastewater Treatment Plant is found in Claremont Heights community in the north eastern suburbs of the Old Harbour township, in the parish of St. Catherine. It is located at approximate Latitude 17° 56'57.18"N and Longitude 77°06'25.50"W.The existing treatment facility consist of 2 types of treatment process one being an oxidation ditch type process system (Claremont WWTP #1) on one parcel of land and a neighbouring parcel comprising a pond system (Claremont WWTP #2). The combined capacity of the system is believed to have an average capacity of 610 m3/day which serves the Claremont Heights, Old Harbour Glades and other neighbouring communities.EXISTING SYSTEMThe system which is now in operation consists of an Oxidation Ditch Activated Sludge Secondary Treatment Plant plus a set of polishing ponds for tertiary treatment. The modules include:1. One (1) Oxidation ditch with three (3) rotor aerator.2. Two (2) clarifiers.3. Three (3) sludge drying beds and a storage bin.4. A chlorine contact chamber5. A sludge conveyance system including pumping station6. Four polishing ponds for tertiary treatmentSection V Works Requirements 132RfP K8-Kfactor Wwtps Rehabilitation & Upgrading Programme (Phase 1) Page 132Design - Build (and Operate) Works for the Rehabilitation and Upgrading of 3 NWC WWTPs (St. Catherine)ICB: NWCECP/K8-WWTPP1/DBWOK/2022/227. Discharge into earthen drainFUTURE PLANSThe location of the facility precludes any immediate need for the expansion of the facility.The facility requires rehabilitation and upgrading works for it to meet the national effluent standards prescribed by our regulators, NEPA (as per their Sludge and Wastewater Regulations 2013).Areas of works to be considered at this facility will included but not limited to the following should the same treatment system type (oxidation ditch) is to be considered:- Repairs/Rehabilitation/Upgrade improvement to buildings on the compound and consideration of mini-lab station.- Rehabilitation/Replacement of perimeter fence system on mechanical plant section (Claremont WWTP #1) where the main entrance is located (on Dolpin Way)- Refurbishment / Replacement of Standby Generator- Replace inlet pumps and motors and refursbish and improve inlet pump station- Service sludge pumping station, replacing sludge pumps- Replacement of scraper unit on both clarifiers- Rehab and improve sludge drying beds- Install new submersible pumps (with guides) plus lifting equipment (for maintenance)- New instrumentation to be installed in pump sump (pump control I protection)- Install new pump discharge pipe work (to existing channel)- Replace isolation penstocks in inlet chamber (to allow isolation of sewage flow to each pump)- Replace existing inlet channel with new structure (concrete). This is to include twin channels, new manual bar racks and grit channel (manual).- Install screening and new flume and measurement instrumentation.- Clean existing pump station and remove any solids build-up / foreign objects.- Remove all existing equipment (pumps) and make good any repairs- Install new aerators and mixers.- Install new instrumentation for monitoring and control.- Clean existing oxidation ditch (vacuum tanker/ pump) - all grit and sludge to be removed from bottom of tank- Refurbish or replace existing outlet weir and make good.- Refurbish safety systems (Hand railing etc)..- Discharge line from oxidation ditch to clarifiers to be checked and replaced if required (including isolation valves to each clarifier if more than one unit)- Clean existing tank to ensure there is no built up solids or any other items in base of tank.- New submersible Return Activated Sludge Pumps (RAS) to be installed in each clarifier with mounting system.- New suction pipe to base of hopper cone.- Replace/ repair/ make good bridge and hand railing etc.- New discharge sludge pipe to be installed from each RAS pump to RAS sludge distribution chamber and from RAS distribution chamber to oxidation tank inlet- New flow meter installed in RAS line to plant inletSection V Works Requirements 133RfP K8-Kfactor Wwtps Rehabilitation & Upgrading Programme (Phase 1) Page 133Design - Build (and Operate) Works for the Rehabilitation and Upgrading of 3 NWC WWTPs (St. Catherine)ICB: NWCECP/K8-WWTPP1/DBWOK/2022/22- New RAS/WAS distribution chamber constructed.- Consideration for xisting sludge pumps and chamber to be removed- Consideration for existing sludge beds to be refurbished with new under drains and gravel/ sand and inclusion of new sludge beds to be constructed of to statisfy the sludge requirements if beds are the chosen technology. Will require new sludge line to be installed from the RAS distribution chamber (new) to the both the existing and new sludge beds Actuated de-sludge valve to be installed in (new waste sludge line) and flow meter. Liquor from drying beds to be returned to inlet pump station - this will most likely require a new pipeline to be installed and depending on hydraulics, a small liquor return pump (and sump)- New disinfectant dosing system to be installed including eductor, gas vacuum regulators and dosing pipe work.- Small new building to house the above equipment to be constructed.- New weir chamber to be built on discharge side of contact tank with connection (upstream /downstream) to existing effluent discharge pipe. Isolation valve to be installed in existing effluent pipe to divert flow to new chamber (or by-pass for future flow meter maintenance)- New flow meter in effluent discharge line (magflow) after new weir chamber- Existing contact tank baffle walls to be raised as required- New PLC system to be installed for monitoring and control of the plant with integral HMI and communications module (SCADA systems, etc.)- New MCC panel to be installed with new starters for all equipment- All new cabling for any new equipment described also needs to be run.- New generator system with automatic mains fail changeover to be installed- Lighting systems to be replaced.- Remove foliage from around ponds and discharge point area- Raise pond embankments and berms as required- Lining of ponds with at least 60 MIL (1.5 mm) HDPE, black, smooth, geomembrane liner material- Perimeter fencing of ponds area- Possible inclusion of reedbed systemThe Nightingale Wastewater Treatment PlantPREAMBLEThe Nightingale Grove Sewage Treatment Plant is located in Gutters area of St. Catherine at Latitude 17056’47.88” N and Longitude 77003’57.13” W. It serves approximately 1330 residents and treats all the sewage generated from the Nightingale Grove Housing Scheme.EXISTING SYSTEMArea Occupied - 3300 m2Section V Works Requirements 134RfP K8-Kfactor Wwtps Rehabilitation & Upgrading Programme (Phase 1) Page 134Design - Build (and Operate) Works for the Rehabilitation and Upgrading of 3 NWC WWTPs (St. Catherine)ICB: NWCECP/K8-WWTPP1/DBWOK/2022/22Treatment Process and ModulesThe system which is now in operation is an Oxidation Ditch Activated Sludge Secondary Treatment Plant consisting of:1. One (1) Oxidation ditch with one (1) rotor aerator.2. One (1) clarifier.3. One (1) Chlorination system4. Three (3) sludge drying beds and a storage bin.5. A chlorine contact chamber6. A sludge conveyance system7. Discharge into earthen drainThe existing capacity is 380,000 litres per day (380 m3/d)FUTURE PLANSThe plan of works being provided by the contractor should include plan for the future expansion of the system.The facility requires rehabilitation and upgrading works for it to meet the national effluent standards prescribed by our regulators, NEPA (as per their Sludge and Wastewater Regulations 2013).For the treatment facility to meet the current national effluent standards additional modules are likely required to be constructed. There is adequate space for the construction of these modulesAreas of works to be considered at this facility will included but not limited to the following should the same treatment system type (oxidation ditch) is to be considered:- Repairs/Rehabilitation/Upgrade improvement to buildings on the compound and consideration of mini-lab station.- Rehabilitation/Replacement of perimeter fence system- Replace existing inlet channel with new structure (concrete). This is to include twin channels, new manual bar racks and grit channel (manual).- Isolation stop gates (manual) to be installed to allow isolation of either channel for cleaning- Install new flume and measurement instrumentation- Remove all existing channel and make good any repairs- Install new aerators and mixers.- Install new instrumentation for monitoring and control.- Clean existing oxidation ditch (vacuum tanker/ pump) - all grit and sludge to be removed from bottom of tank- Refurbish or replace existing outlet weir and make good.- Refurbish safety systems (Hand railing etc)..- Discharge line from oxidation ditch to clarifiers to be checked and replaced if required (including isolation valves to each clarifier if more than one unit)Section V Works Requirements 135RfP K8-Kfactor Wwtps Rehabilitation & Upgrading Programme (Phase 1) Page 135Design - Build (and Operate) Works for the Rehabilitation and Upgrading of 3 NWC WWTPs (St. Catherine)ICB: NWCECP/K8-WWTPP1/DBWOK/2022/22- Clean existing tank to ensure there is no built up solids or any other items in base of tank.- New submersible Return Activated Sludge Pumps (RAS) to be installed in each clarifier with mounting system.- New suction pipe to base of hopper cone.- Replace/ repair/ make good bridge and hand railing etc.- New discharge sludge pipe to be installed from each RAS pump to RAS sludge distribution chamber and from RAS distribution chamber to oxidation tank inlet- New flow meter installed in RAS line to plant inlet- New RAS/WAS distribution chamber constructed.- Consideration for existing sludge pumps and chamber to be removed- Consideration for existing sludge beds to be refurbished with new under drains and gravel/ sand and inclusion of new sludge beds to be constructed of to statisfy the sludge requirements if beds are the chosen technology. Will require new sludge line to be installed from the RAS distribution chamber (new) to the both the existing and new sludge beds Actuated de-sludge valve to be installed in (new waste sludge line) and flow meter. Liquor from drying beds to be returned to inlet pump station - this will most likely require a new pipeline to be installed and depending on hydraulics, a small liquor return pump (and sump)- New chlorine disinfectant dosing system to be installed including eductor, gas vacuum regulators and dosing pipe work.- Small new building to house the above equipment to be constructed.- New weir chamber to be built on discharge side of contact tank with connection (upstream /downstream) to existing effluent discharge pipe. Isolation valve to be installed in existing effluent pipe to divert flow to new chamber (or by-pass for future flow meter maintenance)- New flow meter in effluent discharge line (magflow) after new weir chamber- Existing contact tank baffle walls to be raised as required- New PLC system to be installed for monitoring and control of the plant with integral HMI and communications module (SCADA systems, etc.)- New MCC panel to be installed with new starters for all equipment- All new cabling for any new equipment described also needs to be run.- New generator system with automatic mains fail changeover to be installed- Lighting systems to be replaced.The Old Harbour Villas Wastewater Treatment PlantPREAMBLEThe Old Harbour Villas Sewage Treatment Plant is located in south eastern suburbs of Old Harbour, St. Catherine off the Spanish Town to Old Harbour Main Road, it abuts the Highway 2000 Toll Road at Latitude 17056’11.39” N and Longitude 77005’53.65”W. It serves at least 280 residents and treats all the sewage generated from the Old Harbour Villas Housing Scheme.EXISTING SYSTEMSection V Works Requirements 136RfP K8-Kfactor Wwtps Rehabilitation & Upgrading Programme (Phase 1) Page 136Design - Build (and Operate) Works for the Rehabilitation and Upgrading of 3 NWC WWTPs (St. Catherine)ICB: NWCECP/K8-WWTPP1/DBWOK/2022/22Area occupied – 42,776 m2Treatment Process and ModulesThe system which is now in operation is a Contact Stabilization Pond System consisting of:1. Two (2) Facultative Ponds.2. One (1) Maturation Pond.3. One (1) Polishing Pond.4. A chlorine contact chamberThe existing capacity is 76,000 litres per day (76 m3/d)FUTURE PLANSThe location of the facility precludes any immediate need for the expansion of the facility.The facility requires rehabilitation and upgrading works for it to meet the national effluent standards prescribed by our regulators, NEPA (as per their Sludge and Wastewater Regulations 2013).Areas of works to be considered at this facility will included but not limited to the following should the same treatment system type (oxidation ditch and pond system) is to be considered: Inlet and outlet Flow meters. Preliminary: Manually operated coarse, grit and grease removal. Flow equalization tank hydraulic and organic surges control basin. Facilities capable of producing effluent that meet the National Sewage Effluent Discharge Standards (NEPA). If applicable (depending on the technology chosen) return sludge flow meter. Replace existing inlet channel with new structure (concrete). This is to include twin channels, new manual bar racks and grit channel (manual) Isolation stop gates (manual) to be installed to allow isolation of either channel for cleaning Install new flume and measurement instrumentation Remove all existing channel and make good any repairs Install new aerators and mixers. Install new instrumentation for monitoring and control. Clean existing oxidation ditch (vacuum tanker/ pump) - all grit and sludge to be removed from bottom of tank should the proposed design make use of the existing facility Refurbish or replace existing outlet weir and make good. Refurbish safety systems (Hand railing etc).. Discharge line from oxidation ditch to clarifiers to be checked and replaced if required (including isolation valves to each clarifier if more than one unit) Clean existing tanks to ensure there is no built up solids or any other items in base of tanks if proposal causes for reuse. New submersible Return Activated Sludge Pumps (RAS) to be installed in each clarifier with mounting system. (if Activated Sludge systems are proposed) New suction pipe to base of hopper coneSection V Works Requirements 137RfP K8-Kfactor Wwtps Rehabilitation & Upgrading Programme (Phase 1) Page 137Design - Build (and Operate) Works for the Rehabilitation and Upgrading of 3 NWC WWTPs (St. Catherine)ICB: NWCECP/K8-WWTPP1/DBWOK/2022/22 Replace/ repair/ make good bridge and hand railing etc. (where reuse of existing type oxidation ditch treatment system is proposed) New discharge sludge pipe to be installed from each RAS pump to RAS sludge distribution chamber and from RAS distribution chamber to oxidation tank inlet (if proposal considers reuse of the ditch) New flow meter installed in RAS line to plant inlet New RAS/WAS distribution chamber constructed. Consideration for existing sludge pumps and chamber to be removed Consideration for existing sludge beds to be refurbished (if sludge bed systems is the proposed type of sludge treatment) with new under drains and gravel/ sand and inclusion of new sludge beds to be constructed of to statisfy the sludge requirements if beds are the chosen technology. Will require new sludge line to be installed from the RAS distribution chamber (new) to the both the existing and new sludge beds Actuated de-sludge valve to be installed in (new waste sludge line) and flow meter. Liquor from drying beds to be returned to inlet pump station - this will most likely require a new pipeline to be installed and depending on hydraulics, a small liquor return pump (and sump). Disposal/reuse are steps to be considered. The area of sludge handling and disposal/reuse must be carefully considered in developing a solution. Solutions providing economic returns for the Emloyer must be considred. The possibility of using sludge in energy or compost generation should be considered. New weir chamber to be built on discharge side of contact tank with connection (upstream /downstream) to existing effluent discharge pipe. Isolation valve to be installed in existing effluent pipe to divert flow to new chamber (or by-pass for future flow meter maintenance) New flow meter in effluent discharge line (magflow) after new weir chamber Existing contact tank baffle walls to be raised as required (if being reused) New PLC system to be installed for monitoring and control of the plant with integral HMI and communications module (SCADA systems, etc.) New MCC panel to be installed with new starters for all equipment All new cabling for any new equipment described also needs to be run. New generator system with automatic mains fail changeover to be installed Lighting systems to be replaced. Remove foliage from around mechanical plants (and ponds) site and discharge point area Raise pond embankments and berms as required Lining of earthen ponds with at least 60 MIL (1.5 mm) HDPE, black, smooth, geomembrane liner material Perimeter fencing of ponds area Possible inclusion of reedbed system and sand filter systems where appropriate or where design dictates.Section V Works Requirements 138

Opportunity closing date

30 August 2023

Value of contract

to be confirmed

The buyer is happy to talk to

manufacturers, wholesalers, distributors, agents, consultants