At LPE, we bring you advanced electro membrane technologies (EDI/EDR/ED/ED/BPED) that uses the power of electricity to separate, recover, or purify charged substances—without relying on harsh chemicals. These technologies are ideal for industries seeking high-performance ion removal, green acid/base generation, or ultrapure water production.
We support customers from concept to commissioning with four core technologies:
Electro-membrane Applications in Water Treatment and Process Liquid Solutions Offered by LPE:
Electro membrane processes use DC electrical current to drive ions through ion-exchange membranes. Instead of using pressure (like RO) or chemicals (like ion exchange resins), the electric field selectively moves cations and anions across the membranes—leaving purified water or concentrated products behind.
It’s a smart, continuous, and often chemical-free process—designed for high purity, energy efficiency, and minimal waste.
Unlike pressure-driven membrane processes, ED separates ions based on electrical charge rather than molecular size, making it particularly suitable for brackish water treatment, partial demineralization, and controlled TDS adjustment. Water quality can be precisely managed by adjusting electrical operating parameters, allowing flexible and energy-efficient operation at low to moderate salinity levels.
What it does best:
Bipolar Electrodialysis (BPED) is an advanced form of electrodialysis that incorporates bipolar membranes in combination with cation- and anion-exchange membranes. Under an applied electric field, bipolar membranes split water molecules into hydrogen ions (H⁺) and hydroxide ions (OH⁻). This mechanism enables the direct generation of acids and bases from salt solutions, without the need for chemical reagents.
In a typical BPED system, dissolved salts are converted into their corresponding acid and base streams (e.g., NaCl into HCl and NaOH). This makes BPED particularly attractive for applications involving acid and caustic recovery, chemical reuse, and waste minimization. By regenerating chemicals on-site, BPED helps reduce fresh chemical consumption, wastewater discharge, and overall operating costs.
What it does best:
Electrodeionization (EDI) combines ion-exchange resins, ion-exchange membranes, and an applied electric field to remove dissolved ionic species from water. Unlike conventional ion exchange systems, EDI operates without chemical regeneration, using electricity to continuously regenerate the resins in situ.
EDI is especially well suited for applications requiring high-purity and ultrapure water, where stable conductivity, low silica, and minimal operational intervention are critical. The absence of chemical regeneration eliminates the handling of acids and caustics and reduces wastewater generation.
What it does best:
