Customized industrial RO solution for mineral-rich groundwater and stable mining production water supply

Mining operations require a reliable industrial water supply for production, washing, equipment support, and general plant use. In many inland mining areas, groundwater is available but contains elevated dissolved salts, hardness, iron, manganese, and suspended impurities. Without proper treatment, these contaminants can cause scaling, fouling, corrosion, unstable production water quality, and higher maintenance pressure.

To solve these challenges, a mining company in Uganda selected Zhongnuo Water Treatment to design and manufacture a 15 m3/h brackish water desalination system. The customized system treats brackish groundwater through pretreatment, softening, RO desalination, UV sterilization, storage, and distribution to production water points.

The client needed a stable industrial RO brackish water desalination system that could handle mineral-rich groundwater and supply reliable water for mining production use.

◎  Brackish groundwater required desalination

The groundwater contained dissolved salts that could not be solved by simple filtration. RO desalination was required to reduce salinity and improve production water quality.

◎  Iron and manganese increased pretreatment difficulty

Mining-area groundwater may contain iron and manganese, which can foul downstream equipment and affect membrane performance if not removed before RO treatment.

◎  Hardness control was needed before RO

High hardness can create scaling on RO membranes and pipelines. A softening system with brine regeneration was included to protect the RO system and extend operating cycles.

◎  Industrial operation required stable supply

The system needed to deliver 15 m3/h treated water with reliable storage, UV sterilization, and distribution to production water points.

Brackish Groundwater  ->  Raw Water Tank  ->  Raw Water Pump  ->  Multi-media Filter  ->  Manganese Sand Filter  ->  Water Softener  ->  Brine Tank  ->  Security Filter  ->  High Pressure Pump  ->  RO Reverse Osmosis System  ->  Pure Water Tank  ->  UV Sterilization  ->  Water Supply System  ->  Production Water Points

This 15 m3/h brackish water desalination system was designed for a mining company using brackish groundwater as the feed water source. The process integrates mineral removal pretreatment, softening, reverse osmosis desalination, UV sterilization, pure water storage, and final water supply.

Pretreatment for difficult groundwater

The process begins with the Raw Water Tank and Raw Water Pump. The Multi-media Filter reduces suspended solids and turbidity, while the Manganese Sand Filter helps reduce iron and manganese from the groundwater. This pretreatment stage protects downstream softening and RO equipment from fouling.

Softening and membrane protection

The Water Softener reduces hardness before the RO system, helping prevent membrane scaling. The Brine Tank supports regular softener regeneration, ensuring stable hardness removal during continuous industrial operation. The Security Filter captures fine particles before the high pressure pump.

RO desalination and production water supply

The High Pressure Pump sends pretreated water into the RO Reverse Osmosis System, where dissolved salts and impurities are significantly reduced. Treated water is stored in the Pure Water Tank, sterilized by UV, and delivered through the Water Supply System to production water points.

After installation and commissioning, the brackish water desalination system provided the client with a stable treated water source for mining production operations.

· Stable desalinated water output of 15 m3/h for production water use.

· Reduced suspended solids, iron, manganese, hardness, and dissolved salts from brackish groundwater.

· Improved RO membrane protection through multi-stage pretreatment and softening.

· More reliable water supply for mining production water points.

· UV sterilization provided an additional hygienic safeguard before distribution.

· Robust industrial configuration suitable for remote or mineral-rich groundwater applications.

Zhongnuo Water Treatment provides customized industrial RO, brackish water desalination, seawater desalination, ultrapure water, purified water, and wastewater reuse solutions for mining, manufacturing, food, pharmaceutical, agriculture, and municipal applications. Each system is engineered according to feed water quality, production capacity, application needs, and site operating conditions.

· Customized brackish groundwater treatment design for mining and industrial applications.

· Integrated pretreatment, softening, RO desalination, UV sterilization, storage, and distribution.

· Equipment configuration designed for stable operation and membrane protection.

· One-stop support covering process design, manufacturing, installation guidance, commissioning, and technical service.

1. Why is RO used for brackish groundwater?

RO is effective for reducing dissolved salts and many dissolved impurities, making it suitable for industrial brackish water desalination where filtration alone is not enough.

2. Why include a manganese sand filter?

A manganese sand filter helps remove iron and manganese, reducing the risk of fouling and protecting downstream softening and RO equipment.

3. What is the function of the water softener and brine tank?

The softener reduces hardness to help prevent membrane scaling. The brine tank provides salt solution for softener regeneration.

4. Can this system be customized for different mining sites?

Yes. Zhongnuo Water Treatment can customize pretreatment, RO membrane configuration, tank volume, automation level, and distribution design based on groundwater quality and production demand.