特点与优势
二氧化硅耐受
二氧化硅是不带电荷的分子，因此它仅通过并不会对膜造成影响。
适用性广泛
EDR的灵活性可适应TDS和温度的广泛变化，而不会对工艺或性能造成重大影响。电压调整是所有满足变化的要求。
成本低廉
Water scarcity demands resourceful solutions. High-recovery EDR maximizes water usage, minimizes waste, and lowers operating costs.
更高的浊度
水沿着离子交换膜表面的通道流动，而电使离子盐通过膜，因此它可以处理给水中较高的浊度。
Reduced pretreatment requirements
EDR is an alternative desalination technology that requires less pretreatment than reverse osmosis, while often providing a more robust and reliable operation
应用
Veolia的EDR可用于在不同类型的水中去除带电污染物，如硝酸盐、砷、放射性核素、氟化物、硫酸盐和氯化物。最典型的应用为：
- 用于饮用水的地面和地表苦咸水的淡化
- 从用于灌溉或满足排放要求的三级处理废水中去除 TDS
- Recovery of industrial wastewater in oil & gas extraction, semiconductor facilities, scrubber reclaim and more.
型号
Veolia's EDR has two offering including the MK4 and V Series. Both these systems offer lower operating costs and savings from reduced brine waste.
For drinking water, EDR has lower operating costs than traditional RO when water and wastewater charges exceed $0.20/m3. In drinking water, EDR systems can have up to 40% lower capital cost than an MMF-RO solution.
Also, in wastewater desalination or reuse for irrigation applications, EDR offers lower lifetime cost than MF/UF-RO with up to 50% lower capital cost and 20% lower operating cost, even before water savings associated with higher recovery.
