EDIpure Advanced
High ionic removal, Advanced and Plug-and-play.
Our EDIpure Advanced Continuous Electrodeionization (CEDI) systems based on the LXM-X module are designed and manufactured to further purify reverse osmosis product water to ultra pure or high purity water (0.055 – 0.5 µS/cm). These pre-engineered and ready-to-run CEDI systems are fully factory acceptance tested to significantly reduce installation and start-up costs and are available in a range from 0.22 to 7.67 m3/h. The outstanding design and use of Ionpure’s® patented continuous electrodeionization technology ensures high reliability, minimizes maintenance and eliminates use of regeneration chemicals.
Technology
How it works.
The water passing through the product compartments is deionized to pure water, while the rest of the water is flowing into the reject compartments. This water takes away concentrated salts and small amounts of gases formed on the electrode surfaces. The reject water exiting the CEDI system is typically re-used and mixed with the RO feed water in a vented break tank.
Control & Construction
EDIpure Advanced systems are skid mounted and include a sophisticated control system based on standard PLC / HMI interface and all necessary instrumentation for a reliable and continuous operation. The control system allows easy integration of feature options and auxiliary communication via Ethernet, Modbus or Profibus. Piping is available in PP-H, PVC or Stainless Steel. These CEDI systems are specifically designed for high ionic removal including weakly charged ions like silica, boron and CO2 (up to 18 MOhm.cm).
CEDI technology features:
- Continuous process, constant product water quality
- Low operating costs, electricity only
- Environmentally friendly, no regeneration chemicals
- High system recovery up to 95%
- Typically the reject water is recirculated upstream RO
- 1000’s systems installed worldwide
Unique system design
CEDI system highlights
The CEDI feed water line, in PP-H piping, infrared (IR) welded, is equipped with a manual feed valve and CIP connection. The feed water line splits into a feed water stream and a concentrate water stream. The feed water (90–95%) is purified in the product compartments of the CEDI module. The concentrate stream (5–10%) collects ions in the reject compartments to be discharged as reject water. The feed water line has a 3-part union connection.
The CEDI feed water and concentrate water streams are continuously monitored and safeguarded by flow and pressure instruments. Ultrasonic Flow Meters are installed for enhanced flow measurement accuracy, compact design and maintenance-free operation. The ultrasonic flowmeter in the concentrate water stream is a smart valve that automatically adjusts the flow to maintain a constant recovery rate and compensate for hydraulic variations.
All components are mounted on a SST304 skid, supported by leveling feet for easy positioning.
Open cable trays safely route wiring to the electrical control cabinet. The CEDI module contains 3-part union hydraulic connections for quick assembly and disassembly of the water lines. The nearest SST instrument at the inlet of the CEDI module is grounded for safety.
Product water and reject water flow from the CEDI module. Both streams – the purified product water and the concentrated reject water – are continuously monitored and safeguarded by conductivity, temperature, and pressure instruments. Sampling points and CIP connections are included, and the nearest SST instrument at the outlet of the CEDI module is grounded for safety.
The CEDI product water line is equipped with a diaphragm valve for flow and backpressure control.
A throttle valve is installed in the CEDI reject water line to maintain the required pressure balance (0.1–0.5 bar) between the two streams. Optional product-to-tank and product-to-drain valves can be installed to ensure that only product water within the required specifications enters the product tank.
The Siemens HMI Unified Operator Panel is an advanced graphical touchscreen interface for intuitive system operation and monitoring of operational data. The CEDI operation is displayed as clear and well-organized P&ID, with all relevant screens and parameters easily accessible. The Siemens S7-1500 series PLC supports ethernet communication (Profinet or Modbus) for optional connection to a master PLC or DCS system.
The electrical cabinet is an easily accessible, ventilated, and lockable unit with an IP54 rating, housing the power supply, PLC and all electrical controls and connections. The HMI Unified Panel is mounted on the electrical cabinet door and is easily accessible to the operator. The main power switch and CEDI system CE plate are located on the side.
Performance & Dimensions and weight
Optional System Components
Feed isolation valve
Product and product to drain valves
Experience, expertise and attention
We believe there are only a few companies in the world to rival what we do.
Thanks to our extensive experience in EDI solutions for power, pharmaceuticals, hemodialysis, petrochemicals and microelectronics applications, we developed essential insights into the technology and how it meets specific requirements ‘in the field’. This is reflected in the quality of training, service and validation we provide. So why not contact us? Our advice is free!