Core Business Areas
Industrial Waste Treatment
Mine Tailings Seepage Control
Lithium Extraction Projects
Hydraulic Infrastructure
Transportation Engineering Protection
Haoyang Environmental Engineering Case Studies
Since its establishment in 2008, Haoyang Environmental Technology Co., Ltd. has participated in numerous national infrastructure and international large-scale projects, covering areas such as water conservancy, transportation, solid waste treatment, mining, tailings dams, anti-seepage systems, and environmental engineering. Below is a collection of representative project cases categorized by type, including project background, solutions, and practical outcomes.
National Infrastructure Projects
South-to-North Water Diversion Project, China
Background: A national strategic water transfer project with extremely high impermeability standards.
Solution: Supplied large-area HDPE geomembranes and composite materials with precision installation control.
Outcome: Achieved long-term zero-leakage in canal systems.
Sanjiang Governance Project, China
Background: Ecological restoration at the confluence of multiple rivers.
Solution: Composite geotextiles and drainage nets to enhance soil stability and isolate pollution.
Outcome: Improved regional water self-purification and ecological resilience.
Daxi High-Speed Railway & Central-Southern Corridor, China
Background: Railway construction through complex terrain with high requirements for subgrade reinforcement and waterproofing.
Solution: Applied needle-punched nonwoven geotextiles, reinforcement geogrids, and geomembranes.
Outcome: Enhanced track structure stability and extended service life.
Mining & Industrial Waste Management
Shengtun Mining Gold Project, Congo
● Background: Acidic solution from heap leaching of gold mines.
● Solution: Corrosion-resistant HDPE membrane with multi-layer drainage system.
● Outcome: Safe operation of leach pad and increased gold recovery efficiency.
Citic Guoan Salt Lake Lithium Project, China
● Background: Export-standard delivery with bilingual documentation, saline-alkali soil.
●Solution: Green, high-strength composite membrane with UV aging resistance.
●Outcome: Successfully passed international technical acceptance.
Ultrafine Fly Ash Disposal, Ningxia Lingwu
● Background: High-flow solid waste requires precise sealing and leachate drainage.
● Solution: Double-layer composite membranes + integrated drainage layers.
● Outcome: Stable and safe operation, serving as a model for regional governance.
Alumina Red Mud Yard, Shandong
● Background: Highly alkaline red mud poses significant leakage risks.
● Solution: Double-layer HDPE geomembranes + GCL (bentonite waterproof blankets) to block seepage.
● Outcome: Achieved leak-free operations and became an industry benchmark.
Gold Mine Tailings, Yunnan
● Background: Expansion of tailings pond containing heavy metals with high risk levels.
● Solution: High puncture-resistant HDPE geomembrane + zoned closure design.
● Outcome: Safe operation of tailings pond exceeding design life.
Phosphogypsum Slag Storage, Sinochem Yunlong
● Background: Phosphogypsum slag can produce acidic leachate.
● Solution: Acid-resistant HDPE geomembrane + integrated drainage system.
● Outcome: Met environmental sealing standards and improved site safety.
International Projects
Liqin Indonesian OBI laterite nickel ore
● Background: Tropical high-temperature and heavy rainfall create complex leach pad environments.
●Solution: Double-rough HDPE membrane + 3D composite drainage network.
●Outcome: Enhanced impact resistance and drainage efficiency.
Indonesia alumina red mud yard seepage prevention project
●Background: Highly alkaline red mud requires high-sealing composite system.
●Solution: Multi-layer structure using HDPE membrane + GCL liner.
●Outcome: Stable impermeable structure, reduced construction cycle by 20%.
Huayou Indonesia laterite nickel ore project
● Background: Nickel slurry in the heap leach site is highly corrosive.
● Solution: HDPE membrane with integrated welding and seepage pressure monitoring.
● Outcome: Improved impermeability and environmental safety.
Shenzhou Technology Congo gold copper cobalt mine
● Background: Tailings contain multi-metal chemical residues.
● Solution: Corrosion-resistant composite membrane with automated on-site welding.
● Outcome: Continuous operation over 6 years with excellent performance.
Congo Gold TFM,KCM copper mine
● Background: High-temperature, corrosive heap leach conditions.
● Solution: Dual-layer membrane with multi-stage gas release and leak detection.
● Outcome: System integrity rate exceeded 99.8%.
Zambia, Congo gold and copper mines
● Background: High-pressure leaching environment requires durable membranes.
● Solution: Thick HDPE membrane + stabilized drainage platform.
● Outcome: 100% acceptance rate in annual performance evaluations.
Lithium extraction project in Mariana Salt Lake, Argentina
●Background: Equipment operation at salt lakes may puncture liners.
●Solution: New puncture-resistant composite membrane with flexible buffer layers.
●Outcome: No liner damage reported, strong operational continuity.
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