500 LPH Two-Stage RO Dialysis Water System Exported to South Africa
This 500Lph two-stage reverse osmosis dialysis pure water equipment is specially designed for medical institutions, hemodialysis centers and kidney disease treatment units in South Africa, aiming to provide continuous, safe and internationally strict standard-compliant dialysis treatment water. The system takes “dual softening guarantee + dual-stage reverse osmosis (RO) + post-treatment disinfection” as its core process. In response to the extreme control requirements for microorganisms, endotoxins and chemical pollutants in dialysis water, it achieves 24-hour continuous, stable and reliable high-purity water production, fully meeting the strict water quality standards for hemodialysis and related medical applications.
This system is mainly designed around uninterrupted operation and water quality safety
Dual pretreatment and softening unit: In response to the characteristics of high water hardness and large fluctuations in some areas of South Africa, the system is equipped with two softening tanks (one in use and one as backup, alternating regeneration) to ensure that calcium and magnesium ions can be effectively removed at all times and prevent reverse osmosis membrane scaling. In combination with multi-media filters and activated carbon filters, suspended solids, colloids, residual chlorine and organic matter are removed in advance, providing the best and stable feed water conditions for the subsequent reverse osmosis system and ensuring the system operates continuously around the clock without interruption.
Core dual-stage reverse osmosis purification module: It adopts an industrial-grade dual-stage RO design. The water produced by the first-stage RO serves as the feed water for the second-stage RO, achieving deep removal of dissolved solids, ions, and organic matter. The overall desalination rate of the system is stable at ≥99%. This design can efficiently remove harmful substances such as aluminum, chloramine and nitrate that are strictly prohibited in dialysis water. The chemical pollutant indicators of the produced water are far superior to relevant standards such as ISO 13959, AAMI and the European Pharmacopoeia.
Post-treatment and circulation disinfection unit: The RO product water passes through a UV sterilizer to decompose residual chloramines and inactivate microorganisms. Subsequently, ultrafiltration (UF) or endotoxin filters can be configured for deep retention. The pure water delivery adopts a 316L stainless steel circulation pipeline system and integrates an ozone or hot water regular disinfection function to ensure the sterility of the distribution system and prevent the formation of biofilms.
Core processing system
24-hour uninterrupted operation design: The dual softening tank configuration supports automatic switching and staggered regeneration to ensure zero interruption of the softening process. The key pumps and valves are selected as industrial continuous operation models. The RO membrane process and pipeline design take into account both high efficiency and low clogging risk. The system is equipped with a large intermediate water tank and a water supply buffer device to ensure that the dialysis water supply is not affected even during regular maintenance flushing.
The two-stage RO system and materials: The main frame and the pretreatment tank are made of durable 304 stainless steel, while all pipes, storage tanks and interfaces in contact with pure water are made of 316L ultra-low carbon stainless steel, minimizing the risk of ion precipitation and corrosion, and meeting the biocompatibility and hygiene design standards for medical equipment materials.
Fully automatic intelligent control and monitoring: Integrated PLC+HMI fully automatic control system, which can monitor and record key parameters such as influent hardness, conductivity of each grade of produced water, working pressure, flow rate, UV intensity, and disinfection cycle in real time. The system is equipped with functions such as fault early warning, automatic switching of backup equipment, data traceability and remote monitoring. The electrical design is compatible with the South African voltage standard (230V/50Hz) and takes into account the fluctuations of the local power grid. Voltage stabilizing or protection devices can be optionally equipped.
Technical advantages and performance features
The water quality is safe and reliable, meeting the highest standards The produced water strictly meets the standards of ISO 1395:2014, AAMI RD62 and Chinese YY 0572 for hemodialysis water. Key indicators such as bacterial endotoxin ≤0.03 EU/mL, microorganisms ≤0.1 CFU/mL, total chloramine ≤0.1 mg/L, and the content of chemical pollutants is far lower than the limit value.
High availability design ensures continuous treatment: The dual softening and system redundancy design guarantee that the equipment can operate non-stop 24×365 days, greatly reducing the risk of dialysis treatment suspension due to water treatment system failure. It is suitable for dialysis centers with large outpatient volumes.
Intelligent operation and maintenance, economical and durable: Fully automatic operation and regeneration reduce manual intervention. The two-stage RO process improves water resource utilization and reduces wastewater discharge. The durable structure and high-quality materials extend the service life of the equipment and adapt to the diverse climate and environmental conditions in South Africa.Tailored for dialysis safety: The entire system, from design, materials to control logic, is centered around the core goal of “dialysis water safety”, providing full-process water quality assurance from water treatment to transportation, and assisting South African medical institutions in offering safe and reliable dialysis treatment services.