Membrane Element Suppliers by QILEE

Product Overview

QILEE’s Membrane Element Suppliers (BWRO series) are aromatic polyamide composite reverse osmosis membrane elements engineered for brackish groundwater and surface water treatment. Available in common 8-inch element sizes (AG-BWRO-8040 and AG-BWRO-4040), they deliver high salt-rejection RO performance for industrial and municipal desalination and purification systems.

Product Features

- Very high salt rejection (stabilized ~99.6%, minimum ~99.5%).

- High permeate flow (AG-BWRO-8040: ~10,500 GPD / 39.7 m3/d; AG-BWRO-4040: ~2,500 GPD / 9.5 m3/d).

- Low operating pressure and energy-efficient design (max pressure 600 psi / 4.14 MPa).

- Excellent fouling resistance and easy cleanability; stable long-term performance.

- Wide chemical and operational tolerance: continuous pH 3–10, short-term cleaning 1–13, max operating temperature 45 °C; feed SDI limit 5; low free chlorine tolerance (0.1 mg/L).

- Optimized membrane surface and spacer configuration for even flow, low pressure drop, and improved cleaning.

Product Value

QILEE membranes provide reliable, consistent production of high-quality permeate while lowering lifecycle costs through reduced energy use, extended membrane life, and easier maintenance. They support compliance with strict industry water quality requirements, minimizing process disruption and downtime in critical applications.

Product Advantages

- Robust structural design and advanced composite membrane chemistry for long-term stability and high rejection under challenging feed conditions.

- Optimized hydrodynamics (spacer and surface design) that reduce fouling propensity, improve cleaning effectiveness, and lower pressure drop.

- Compatibility with standard 8" pressure vessels and widely used system configurations for straightforward retrofits and scale-up.

- Proven performance across diverse operating conditions and industrial demands.

Application Scenarios

- Electronics & power: ultrapure and boiler feed water for sensitive processes.

- Municipal water: drinking water production, groundwater/surface water desalination, and tap-water improvement.

- Chemical & pharmaceutical: process and formulation water requiring consistent, high-quality feed.

- General industry and specialized uses: wastewater reuse and recycling, water concentration, steel, thermoelectric, petrochemical plants, and other industrial water treatment needs.