Struggling with Scaling in High-Hardness Water? EDR Might Be the Answer

For many industrial water systems, scaling and fouling remain persistent challenges—especially when treating high-hardness or complex feedwater. Conventional membrane processes often require intensive pretreatment and frequent cleaning.

Electrodialysis Reversal (EDR) offers a different approach.

By periodically reversing electrode polarity, EDR helps limit scale formation and maintain stable performance over time—making it a practical solution where reliability and water recovery are critical.

At Lanran, we design and supply ion exchange membranes and EDR systems tailored for industrial water treatment, helping clients optimize performance under real operating conditions.

Where EDR fits:
🔹Industrial water reuse under scaling-prone conditions
🔹Brackish water desalination
🔹Pre-concentration before evaporation
🔹Process water treatment in power and chemical industries

What you can expect from EDR:
1️⃣ More tolerant to feedwater variability than pressure-driven membrane processes
2️⃣ Reduced scaling tendency enabled by periodic polarity reversal
3️⃣ Water recovery is typically above 80%, depending on system design
4️⃣ Adjustable desalination performance (approx. 50–90%) to meet process requirements
5️⃣ Limited selective removal of organic components

If scaling is limiting your system performance, it may be time to consider an alternative approach.

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