Case Sharing
By choosing Pulang Membrane Technology, you will receive innovative, reliable, and customized membrane technology solutions. With our technical strength, unique system design, and rich industry experience, we are committed to providing customers with high-quality service and significant value enhancement.
China Coal Certain Coal Mine 150 m³/h Mine Water Zero Liquid Discharge Treatment System
Project Overview
Centered around the goals of "produced water reuse + concentrated water resource utilization," the front section uses tubular membranes and RO to obtain desalinated water reusable in production, while the back section performs softening—tubular membrane—nanofiltration salt separation—GTRO high-multiplier concentration followed by evaporation crystallization on RO concentrated water, achieving orderly salt disposal and a ZLD closed loop.
Technical Specifications
· Wastewater Type: Mine wastewater
· Process Adopted: PEK Tubular Membrane + RO + Softening + PEK Tubular Membrane + Nanofiltration Salt Separation + GTRO Concentration + Evaporation Crystallization
· Treatment Capacity: 150 m³/h
· Completion/Operation: 2020-06
Performance Highlights
· PEK tubular membrane softening produced water: Total hardness <50 mg/L, total silicon <20 mg/L; RO single-pass recovery rate ≥90%
· NF salt separation ratio: NaCl side Na₂SO₄:NaCl ≥1:60; Na₂SO₄ side Na₂SO₄:NaCl ≥10:1
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