1. Industry-Specific Requirements for Drainage Geonet

Selecting a drainage geonet for industrial applications requires a deep understanding of the unique stresses in each environment. Two high-demand sectors—metal smelting and aquaculture—illustrate the distinct criteria that procurement teams must evaluate.

Metal Smelting & Mining Tailings

In non-ferrous metal smelting tailings pond projects, the drainage geonet is part of a critical anti-seepage system. The material must withstand acidic or alkaline leachates, constant UV exposure, and high mechanical loads. It must be used with geomembrane and drainage geonet (61922) to form a reliable composite liner. Special requirements include high chemical resistance, UV resistance, and long service life. The drainage capacity should be customizable—typically ≥50 L/min/m to ≥120 L/min/m (61693)—to handle rapid evacuation of seepage. Additionally, compressive resistance is paramount; a 10% strain compressive strength of ≥500 kPa to ≥830 kPa is common for these projects.

Aquaculture Ponds

For aquaculture pond anti-seepage systems, the drainage geonet functions to prevent water seepage (61911). It must be used with geomembrane and drainage geonet (61913). Special requirements for this scenario include non-toxic, UV resistant, fish-friendly, and long service life properties (61915). The system operates continuously (24/7) and must not release harmful substances into the water. A high-strength polypropylene composite drainage geonet (61624) with a high drainage capacity (≥50–120 L/min/m) is often specified to maintain pond stability and water quality.

2. Supplier Selection Criteria: 3 Essential Capabilities

3. Case Study: Gold Mine Tailings Pond in Uzbekistan

A major mining and smelting engineering project in Uzbekistan required 900,000 m² of drainage geonet for seepage prevention in a gold mine tailings pond basin. The project demanded a solution that could withstand aggressive chemical conditions and provide reliable drainage over a 70-year design life. The supplier—Haoyang Environment Co., Ltd.—delivered an innovative 3D composite drainage network combining a textured geomembrane with a high-strength polypropylene geotextile. The textured geomembrane was produced on a five-layer co-extrusion blow molding line with integrated online double-sided texturing equipment. Using a high-temperature and high-pressure air jet process, the rough surface structure is formed in the molten state, creating a molecular-level bond with the substrate. This approach reduces production energy consumption by 25% and avoids thermal aging risks associated with secondary processing. The result: the project moved beyond a single-product sales model to a full-chain service system encompassing material supply and on-site installation, perfectly meeting the customer's needs for gold mine tailings pond seepage control (case 716).

4. Key Points for Buyer-Supplier Collaboration

• Define Industry Standards Early – Clearly specify whether ASTM, EN, or GOST standards apply. For example, a CE mark under EN 13249:2016 may be required for EU-funded infrastructure, while GOST certificates are mandatory for EAEU projects. Request certified test reports for tensile strength, compressive strength, and drainage capacity.
• Conduct On-Site Survey – Soil chemistry, groundwater composition, and load conditions vary greatly. A supplier that offers on-site support (61604, 61383) can help determine the optimal product configuration—e.g., acid and alkali resistant grade vs. standard grade.
• Verify After-Sales and Emergency Protocols – Confirm the supplier’s ability to provide rapid technical support and replacement materials. A manufacturer with a 3000 ton monthly capacity and 10–30 day lead time (61384) can adapt to urgent project changes. Quality control based on 100% testing (61514, 61597) ensures that every roll meets the specified parameters before shipment.

By evaluating suppliers against these criteria—industry experience, certifications, and harsh-environment design—procurement teams can secure drainage geonet that performs reliably over decades in metal smelting and aquaculture applications.