With the rapid development of Tanzania's mining industry, many coastal mining sites are facing serious freshwater shortages, high water transportation costs, and unstable water supplies. To meet the demands of ore processing, equipment cleaning, and domestic water supply, Zhongnuo Water Treatment designed and manufactured an 18 m³/h Containerized Seawater Reverse Osmosis (SWRO) System for a large mining company in Tanzania.

The system adopts advanced Seawater Reverse Osmosis (SWRO) technology combined with an Energy Recovery Device (ERD) to convert seawater into high-quality freshwater suitable for industrial production and drinking water applications. The complete system is integrated into a 40HQ container, pre-assembled and factory-tested, allowing rapid installation and commissioning while minimizing civil construction costs.

Industry: Mining Industry
Country: Tanzania
Feed Water: Seawater
Feed TDS: Approximately 35,000 ppm
Capacity: 18 m³/h
Product: Containerized SWRO Desalination System
Application: Ore Processing, Equipment Cleaning, Dust Suppression, Drinking Water, Domestic Water
The customer operates a large coastal mining site in Tanzania where freshwater resources are extremely limited. The company previously relied on water trucking, resulting in high operating costs and an unstable water supply. They required a reliable desalination solution capable of providing continuous freshwater for both production and domestic use.

• Treating high-salinity seawater (TDS >35,000 ppm)
• Providing a stable output of 18 m³/h for 24/7 operation
• Rapid deployment at a remote mining site
• Reducing operating costs through energy-efficient design
• Corrosion resistance in harsh marine environments using SUS316L, FRP vessels, and UPVC/PVC piping.

Seawater  ->  Seawater Intake Pump  ->  Raw Water Tank  ->  Raw Water Pump  ->  Multi-media Sand Filter  ->  Chemical Dosing System  ->  5μm Cartridge Filter  ->  High Pressure Pump  ->  Seawater Reverse Osmosis (SWRO)  ->  Energy Recovery Device (ERD)  ->  Desalinated Water Tank  ->  UV Sterilizer  ->  0.22μm Precision Filter  ->  Fresh Water Tank  ->  Industrial Water / Drinking Water / Production Lines

The complete desalination plant is integrated into a 40HQ ISO container, including pretreatment, high-pressure SWRO system, ERD, post-treatment, UV sterilization, PLC automatic control, and online monitoring. It offers plug-and-play installation, fast transportation, high reliability, remote maintenance, and fully automatic operation.
Suitable for Mining, Oil & Gas, Island Water Supply, Coastal Industry, Construction Camps, and Military Camps.

Seawater Intake Pump – Seawater intake
Raw Water Tank – Raw water storage
Raw Water Pump – Water transfer
Multi-media Sand Filter – Suspended solids removal
Chemical Dosing System – Antiscalant and chemical dosing
5μm Cartridge Filter – Fine filtration
High Pressure Pump – RO operating pressure
SWRO Membrane – Desalination
Energy Recovery Device – Energy saving
UV Sterilizer – Disinfection
0.22μm Precision Filter – Final filtration
PLC Control System – Automatic operation

• Salt rejection ≥99.5%
• Removes salts, chlorides, heavy metals, suspended solids, organic matter, and bacteria.
• ERD reduces energy consumption by approximately 20–40% depending on operating conditions.
• Fully automatic PLC control with online monitoring, auto flushing, alarms, conductivity, pressure and level monitoring.
• Containerized design for fast transportation and installation.
• Marine-grade corrosion-resistant materials.

✓ Stable freshwater production of 18 m³/h

✓ 24/7 continuous operation

✓ Salt rejection ≥99.5%
✓ Reduced freshwater transportation costs
✓ Reliable industrial and domestic water supply
✓ Lower maintenance costs
✓ Improved mining productivity

Customer Feedback: 'The containerized SWRO system greatly improved our water supply reliability while significantly reducing operating costs.'

1. Why choose SWRO instead of BWRO?
SWRO is specifically designed for seawater with TDS above 35,000 ppm.

2. What are the benefits of ERD?
It recovers hydraulic energy and reduces overall energy consumption.

3. Can the system produce drinking water?
Yes, after UV sterilization and final filtration, subject to local regulations.

4. Is it suitable for remote mining sites?
Yes. The containerized design enables rapid deployment.

5. What maintenance is required?
Routine filter replacement, CIP membrane cleaning, and inspection of pumps and valves.

6. What is the membrane lifespan?
Typically 3–5 years with proper pretreatment.

7. Can capacity be customized?
Yes, from 1 m³/h to over 1,000 m³/h.

8. Which industries can use it?
Mining, Oil & Gas, Islands, Resorts, Ports, Construction Camps, Military Bases, and Municipal Water Supply.

With over 23 years of experience in industrial water treatment, Zhongnuo Water Treatment provides customized RO, UF, EDI, SWRO, BWRO, and containerized water treatment systems to customers in more than 100 countries.

• 23+ Years of Experience
• 20+ Professional Engineers
• Customized Solutions
• ISO-Certified Manufacturing
• Containerized Water Treatment Systems
• Complete EPC Service
• 24/7 Technical Support
• OEM & ODM Available