Geomembrane Lining Systems

2. Material Selection Guide

Primary Membrane Options

Reinforcement Layers

• Geotextile Cushion: 500g/m² needle-punched fabric

• Leak Detection Grid: Conductive layer for 5mm defect detection

3. Chemical Compatibility Performance

Resistance to Common Effluents

✓✓✓=Excellent ✓✓=Good ✓=Limited

4. Installation Protocol

Critical Steps

1. Subgrade Preparation

• Achieve 95% compaction (ASTM D698)

• Remove all particles >6mm

2. Welding Specifications

• Dual-track seams: 25mm width @ 300-350°C

• Seam strength: ≥90% parent material

3. Anchoring System

• 600mm deep perimeter trench with concrete collar

Specialized Techniques

• Pipe Penetrations: Double boot seals with chemical-resistant mastics

• Corners: Pre-fabricated 3D liners with 200% reinforcement

5. Quality Assurance Measures

Inspection Methods

Monitoring Systems

• Real-time Leak Detection: Electrode grids with<1L/hr sensitivity

• Chemical Degradation Sensors: Embedded pH/temperature probes

6. Performance Data

▸ Permeability:<1×10⁻¹² cm/sec (ASTM D5887)
▸ Service Life: 20-30 years in pH 1-12 environments
▸ Stress Crack Resistance: >1500hrs (ASTM D5397)

7. Regulatory Compliance

• EPA 9090: Chemical compatibility testing

• EN 13361: Containment lining standards

• GB/T 17643: Chinese technical code

Title: "Advanced Geomembrane Solutions for Hazardous Liquid Containment"

Innovation Highlights:
✔ Self-Healing Formulations: Microencapsulated repair agents
✔ Smart Lining Systems: IoT-enabled integrity monitoring
✔ Zero-Leak Guarantee: 100% electrical leak detection coverage

Case Study:

• Project: 50,000m³ Acid Waste Pond

• Solution: 2.5mm HDPE + conductive geotextile

• Result: Zero leaks after 5 years of 10% HCl storage