Waste water treatment systems Sevilla, Spain The the largest RCTD Reverse Osmosis Plant in Europe was built for a spanish copper mine in Sevilla. The plant consists of ten 40″ container and has a total membrane area of 10.000m².Capacity: 1,4 mio m³/yearModules used:Ultra Filtration: 72,RO1: 144 SP reverse osmosis,RO2: 192 RCTD XL -reverse osmosis using disc tube module technology RCDT module,RO3: 68 RCDT XL -reverse osmosis using disc tube module technology RCDT module