UNITED NATIONS WORLD FOOD PROGRAMME (WFP) Ethiopia Country Office would like to invites interested and qualified bidders for supply, Installation and Commissioning of Reverse Osmosis (RO) Desalination System at Semera WFP Premises, Afar Region, Ethiopia
REQUEST FOR EXPRESSION OF INTEREST
UNITED NATIONS WORLD FOOD PROGRAMME (WFP)
Ethiopia Country Office
REQUEST FOR EXPRESSION OF INTEREST (EOI)-No.ET-EOI-003-2026
For Supply, Installation and Commissioning of Reverse Osmosis (RO) Desalination System at Semera WFP Premises, Afar Region, Ethiopia
Closing on 13 July at 12:00 hrs
1. BACKGROUND
The World Food Programme (WFP) Ethiopia Country Office intends to procure the supply, installation, and commissioning of a Reverse Osmosis (RO) water treatment plant/Desalination system to provide potable water for operational use at its Semera WFP compound.
The source water is from a drilled borehole, characterized by elevated salinity and dissolved contaminants requiring advanced treatment.
2. OBJECTIVE
The objective of this Expression of Interest (EOI) is to identify qualified and experienced suppliers capable of delivering a complete water treatment system that meets operational and potable water quality requirements.
3. TECHNICAL REQUIREMENTS & PROJECT SPECIFICATIONS
3.1 Customer Requirements
The Client requires the supply, installation, and commissioning of a 3 m³/hr Reverse Osmosis (RO) system to meet operational needs.
The requirement is based on the water analysis report from the College of Technology & Built Engineering dated 28 January 2026, and applicable site conditions. (Review Annex 2)
A comprehensive and updated water analysis shall be conducted prior to final system design and order confirmation.
The system shall be designed to produce potable water in accordance with WHO Drinking Water Guidelines.
3.2 Site Conditions
The available water analysis indicates that the following parameters exceed acceptable limits:
|
Parameter |
Unit |
Result |
Limit |
|
TDS |
Ppm |
3,900 |
<1000 |
|
Calcium |
Ppm |
245 |
<150 |
|
Copper |
Ppm |
3.21 |
<2 |
|
Conductivity |
µS/cm |
5,900 |
<1,500 |
|
Chloride |
Ppm |
380 |
<250 |
3.3 Indicative Treatment Process
The treatment process is expected to include, but not be limited to:
· Filtration
· Reverse Osmosis (RO)
· Disinfection
Suppliers are encouraged to propose optimized solutions based on their technical expertise.
3.4 Indicative System Overview
The system configuration may include:
· Raw water abstraction from borehole and storage in a raw water tank
· Pre-treatment using a multimedia (glass media) pressure filter to remove turbidity and suspended solids
· Chemical dosing (antiscalant) to prevent membrane scaling
· Reverse osmosis system for removal of dissolved salts, heavy metals, and contaminants
· Post-treatment disinfection (chlorination) prior to storage in treated water tank
3.5 Key Equipment (Indicative)
The system is expected to include, but not limited to:
· Centrifugal transfer/booster pump ( ~1.6 kW indicative)
· Automatic multimedia (glass media) pressure filter (approx. 900 mm diameter)
· Reverse osmosis plant (3 m³/hr capacity)
· Chemical dosing systems
· Disinfection unit
· Cleaning-in-place (CIP) system
· Associated piping, valves, and control systems
Final equipment selection and system design shall be proposed by the supplier based on verified design data.
3.6 Indicative System Overview
The system configuration may include
· Raw water abstraction from borehole and storage in a raw water tank
· Pre-treatment using a multimedia (glass media) pressure filter to remove turbidity and suspended solids
· Chemical dosing (antiscalant) to prevent membrane scaling
· Reverse osmosis system for removal of dissolved saits, heavy metals, and contaminants
· Post-treatment disinfection (chlorination) prior to storage in treated water tank
3.7 Indicative System Layout
3.8 Key Equipment High Level Specification
The key equipment is summarized below. Specifications are indicative and describe principal characteristics.
The pre-treatment stage includes a Automatic Multimedia (Glass Media) Pressure Filter to reduce turbidity and suspended solids before RO processing. The filter uses graded glass media to ensure efficiency and durability.
|
Reverse Osmosis Plant |
|
|
Reverse Osmosis (RO) is a process in which purified water (permeate) is produced from the feed water via the rejection of 95%-98% organic and inorganic constituents by a semi- |
|
|
permeable membrane system. The RO system separates the incoming feed stream into two effluent streams: |
|
|
The permeate (treated water) passes through Reverse Osmosis membranes and thus contains greatly reduced quantities of mineral salts and organics for use typically (>96% of the |
|
|
rejection ratio). A ratio of per-meate to feed water gives the system recovery. |
|
|
The concentrate (reject water) is the stream that passes tangentially across the membrane surface and thus retains the impurities separated from the permeate stream. A minimum flow of concentrate is necessary to keep members from 'fouling due to the removed mineral salts and organic contents. The pre-treatment stage of the water treatment plant shall entail the use of a Automatic Multi-media (Glass Media) Pressure Filter to reduce the turbidity and suspended material in the raw water before feeding into the reverse osmosis plant. The filters are charged with fine glass media of different grades to ensure filtration efficiency and Increased longevity before recharge. |
|
4. SCOPE OF WORK
4.1 Supplier Responsibilities
The successful supplier shall be responsible for:
· Detailed system design and engineering
· Supply of complete equipment and materials
· Installation and integration of all system components
· Testing and commissioning
· Performance verification
· Provision of technical documentation (including as-built drawings and warranties)
· Supply of initial spare parts and consumables
· Training of operators and system handoveron
4.2 Client Responsibilities
The Client shall be responsible for:
· Provision of accurate project and site data
· Preparation of installation site and ensuring accessibility at all times
· Provision of utilities (water, power, access)
· Civil works, Including foundations and drainage (backwash/washout pipelines)
· Designation of personnel for training and handover
5. ELIGIBILITY CRITERIA
Interested suppliers shall meet the following requirements:
· Proven experience in supply and installation of reverse osmosis systems
· Demonstrated completion of similar projects (minimum 2-3 references)
· Adequate technical and engineering capability
· Availability of local technical support and after-sales service
· Compliance with applicable quality and safety standards
6. DELIVERY & IMPLEMENTATION
· Estimated delivery period: 8-12 weeks
· Installation and commissioning to be carried out by qualified personnel
· Final acceptance subject to successful testing, performance verification and warranty submission.
7. IMPORTANT NOTES AND CONDITIONS
· The system design is based on preliminary water analysis and may require adjustment upon detalled analysis
· Treated water quality shall be verified during commissioning
· The system shall achieve potable water quality in accordance with WHO standards under proper operation conditions
· Consumables such as membranes and chemicals shall require periodic replacement, and replacement schedules shall be provided
· Delivery shall be carried out using appropriate equipment (e.g., crane truck), and suppliers shall ensure safe offloading procedures
· Installation may involve drilling, welding, and mechanical works as required
8. SUBMISSION REQUIREMENTS
Interested suppliers shall submit
· Company profile
· Experience and references of similar projects
· Technical capability statement
· Proposed technical approach
· Relevant certifications and accreditation
9. SUBMISSION DEADLINE
· EOI submissions must be received on or before: 13 July 2026, 12:00 hrs (East Africa Time)
10. METHOD OF SUBMISSION OF DOCUMENTS
Vendors interested in participating in the prequalification process are requested to express their interest and submit the required qualification documents to WFP via email at addisababa.procurement@wfp.org.
Please ensure that the email subject line clearly indicates: The EOI reference number: ET-EOI-003-2026, and the project title: "Supply, Installation and Commissioning of Reverse Osmosis (RO) Desalination System in Semera WFP Premises, Afar Region, Ethiopia". This will facilitate efficient tracking and follow-up the responses by WFP.
11. DISCLAIMER
This request for Expression of Interest (EOI) is issued for prequalification purposes only and does not constitute a solicitation.
WFP reserves the right to accept or reject any submission, and to cancel the process at any time without incurring any liability.
ANNEX 1-INDICATIVE BILL OF QUANTITIES
|
No. |
DESCRIPTION |
QTY |
Unit Price Before VAT (ETB) |
Total Price Before VAT (ETB) |
|
PRE-TREATMENT |
||||
|
1 |
Centrifugal Pump, 1.6kW (Equivalent to Davey Dynaflo 6210) |
Pcs |
1 |
|
|
2 |
Automatic High Pressure Multimedia Filter (Glass Media Type-900 mm Diameter) (Equivalent to Dayliff PXD900 Filter) |
Pcs |
1 |
|
|
3 |
Grade 2 Glass Media (Equivalent to Certikin Grade 2) |
Pcs |
32 |
|
|
4 |
Grade 3 Glass Media (Equivalent to Certikin Grade 3) |
Pcs |
16 |
|
|
REVERSE OSMOSIS & DISINFECTION |
||||
|
5 |
Reverse Osmosis System. 3m/hr Capacity Equivalent to Detylitt RO TD52000) |
Pcs |
1 |
|
|
6 |
Chemical Dosing Pump, Automatic (Equivalent to Daylift/ Pcs Seko AML200) |
Pcs |
3 |
|
|
7 |
Antiscalant Chemical-25KGS (Equivalent to Genesys LF) |
Pcs |
1 |
|
|
8 |
Biofilm Removal Agent -25KGS (Equivalent to Genesol 80) |
Pcs |
1 |
|
|
9 |
Chlorine-20KGS (Equivalent to Dayliff Chlorine) |
Pcs |
1 |
|
|
10 |
Chemical Tank-60 Litres |
Set |
3 |
|
|
11 |
CIP Pump |
Pcs |
1 |
|
|
12 |
CIP Tank-170 Litres |
Pcs |
1 |
|
|
13 |
CIP Chemicals |
Set |
1 |
|
|
PIPING, TRANSPORT SERVICE AND INSTALLATION |
||||
|
14 |
Pipes, Fittings and Valves for Installation |
Ls |
1 |
|
|
15 |
Transport and installation |
Ls |
1 |
|
|
|
Sub Total (ETB) |
|
|
|
|
|
Add VAT 15% (ETB) |
|
|
|
|
|
Grand Total (ETB) |
|
|
|
Consumables & Spare Parts- 1
|
No |
Description |
Unit |
Qty |
Unit Rate Before VAT (ETB) |
Total Price Before VAT (ETB) |
|
1 |
RO membrane Set (Compatible with installed RO system) |
Set |
8 |
|
|
|
2 |
Antiscalant Chemical – 25 KGS |
Pcs |
2 |
|
|
|
3 |
Biofilm Removal Agent – 25 KGS |
Pcs |
2 |
|
|
|
4 |
Chlorine – 20 KGS |
Pcs |
2 |
|
|
|
5 |
CIP Chemicals |
Set |
1 |
|
|
|
|
Sub Total (ETB) |
|
|
|
|
|
|
Add VAT 15% (ETB) |
|
|
|
|
|
|
Grand Total (ETB) |
|
|
|
|
ANNEX 2-WATER ANALYSIS REPORT
ቴክኖሎጂና ቢዩልት ኢንቫሮመንት ኮሌጅ
College of Technology & Built Environment
የሲቪል እና ኢንቫይሮመንታል ምህንድስና ት/ቤት
School of Civil & Environmental Engineering
Physical and Chemical Analysis of Water
Source of Sample: Ground Water
Requested by: World Food Programme (WFP) Date of Analysis: Jan 28/2026
|
No |
Parameter |
Before Treat |
After Treat |
|
1 |
T°C |
2.0°C |
20°C |
|
2 |
PH |
7.6 |
7.5 |
|
3 |
Color |
Colorless |
Colorless |
|
4 |
TDS |
3.9 g/I |
3.3 g/l |
|
5 |
Odor |
Odorless |
Odorless |
|
6 |
Conductivity |
5.9 ms/cm |
5.1 ms/cm |
|
7 |
Turbidity |
1.66 NTU |
1.13 NTU |
|
8 |
Acidity |
7 mg/l as ca cos3 |
5 mg/l as ca co3 |
|
9 |
Alkalinity |
10 mg/l as ca c03 |
5 mg/l as ca co3 |
|
10 |
Hardness |
250 mg/l as ca co |
235 mg/l as ca cоз |
|
11 |
Chloride |
380 mg |
320 mg |
|
12 |
Sulfate |
450 mg/l |
400 mg/l |
|
13 |
Phosphate |
0.96 mg |
0.86 mg |
|
14 |
Nitrate |
5.3 mg/l |
2.9 mg/l |
|
15 |
Nitrite |
0.02 mg/l |
0.019 mg/l |
|
16 |
Iron |
0.08 mg/l |
0.07 mg/I |
|
17 |
Managanese |
0.2 mg/l |
0.01 mg/I |
|
18 |
Calcium |
245 mg/l as a ca co3 |
240 mg/I as ca co3 |
|
19 |
Magnesium |
10 mg/l as a ca co3 |
5 mg/I as ca co3 |
|
20 |
Chromium |
0.02 mg/l |
0.01 mg/I |
Tested by ___________________ Approved by __________________
Signature ___________________ Signature ______________________
Login with Google