Pharmaceutical Water Treatment
Ultrafiltration and Reverse Osmosis System for Medicinal Cannabis Production | Paarl, Western Cape, South Africa
PROJECT SUMMARY
Greenchain Group designed and implemented a multi-stage water treatment system for a pharmaceutical cannabis cultivation facility in the Western Cape, South Africa. The project was developed to provide a reliable supply of high-purity process water capable of supporting the strict quality and regulatory requirements associated with medicinal cannabis production.
The solution combines advanced ultrafiltration (UF), inline coagulation and reverse osmosis (RO) technologies to convert variable-quality borehole and surface water into consistent, compliant water suitable for pharmaceutical-grade cultivation processes.
The system remains fully operational and continues to be supported by Greenchain Group through an ongoing Service Level Agreement and preventative maintenance programme.
THE CHALLENGE
Medicinal cannabis cultivation places stringent demands on water quality, consistency and reliability. Water quality directly influences cultivation outcomes, process control and compliance with pharmaceutical manufacturing standards.
The client had experienced recurring operational interruptions associated with an existing imported reverse osmosis system that was unable to consistently achieve the required production volumes or operate within its intended design parameters.
In addition to reliability concerns, the facility required flexibility to operate from multiple water sources. Borehole water served as the primary supply, while surface water needed to remain available as a contingency source during periods of reduced borehole availability.
The differing characteristics of these water sources presented a significant treatment challenge. Elevated suspended solids, colloidal material, iron, manganese and organic matter within the available source waters posed a substantial fouling risk to downstream reverse osmosis membranes and threatened long-term system reliability.
The client required a treatment solution capable of consistently delivering pharmaceutical-grade water while maintaining operational resilience and production continuity.
THE SOLUTION
Greenchain Group undertook a comprehensive water characterisation programme prior to system design. This included water sampling, accredited laboratory analysis, bench-scale testing and treatment simulations to fully understand the behaviour of both source waters under varying operating conditions.
Based on these findings, Greenchain Group developed a fully automated treatment train incorporating primary clarification through coagulation and flocculation, followed by ultrafiltration and reverse osmosis treatment.
The ultrafiltration stage removes suspended solids, colloids, iron, manganese and organic material prior to the reverse osmosis process, protecting membrane performance and improving overall treatment efficiency.
The final reverse osmosis stage produces high-purity water suitable for pharmaceutical cultivation requirements, while the ultrafiltration permeate also provides a valuable secondary water stream for wider operational uses across the facility.
This approach maximises resource efficiency while ensuring that the highest quality water is reserved for the applications that require it most.
Key Outcomes
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Reliable production of pharmaceutical-grade process water.
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Successful treatment of both borehole and surface water sources.
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Improved operational resilience through dual-source water capability.
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Reduced fouling risk and improved reverse osmosis performance.
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Increased treatment reliability and production consistency.
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Delivery of 4,000 LPH ultrafiltration water and 2,500 LPH reverse osmosis water.
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Improved utilisation of treated water across multiple facility applications.
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Ongoing support through a monthly Service Level Agreement.
Technical Highlights
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Multi-stage water treatment system for pharmaceutical applications.
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Inline coagulation and flocculation for primary clarification.
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Ultrafiltration system producing 4,000 litres per hour.
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Reverse osmosis system producing 2,500 litres per hour.
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Designed for borehole and surface water treatment applications.
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Removal of suspended solids, colloids, iron, manganese and organic contaminants.
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Fully automated process control and system operation.
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Ongoing monitoring, preventative maintenance and operational support.
Business Impact
For pharmaceutical and medicinal cannabis producers, water quality is a production input that directly influences compliance, product quality and operational efficiency.
By implementing a treatment process specifically designed around the facility’s water sources and operational objectives, Greenchain Group enabled the client to secure a dependable supply of high-quality process water while reducing operational interruptions and treatment risk.
The combination of flexible source water management, robust pre-treatment and ongoing operational support allows the client to focus on cultivation and production activities with confidence in the reliability of their water infrastructure.
The project demonstrates the importance of designing water treatment systems around actual water chemistry, operational realities and regulatory requirements rather than relying on standardised solutions.
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Facing similar water challenges?
Whether operating in pharmaceutical manufacturing, food production, agriculture or advanced processing industries, water quality can have a direct impact on compliance, product quality and operational continuity. Greenchain Group works with businesses across these sectors to design water treatment systems that support production objectives, improve resilience and provide confidence in long-term water security.