
Underground Type Domestic Sewage Treatment System Biogas Domestic Waste Water Purification FRP Septic Tank. High Strength & Lightweight: Density is 1/4 of steel, strength is 10 times that of rigid PVC, and weight is 1/3 of concrete. Superior Corrosion Resistance: Resistant to acid, alkali, organic solvents, and salts. Excellent waterproof performance. Long Service Life: Aging resistant with a lifespan exceeding 50 years, and some models can last over 70 years. Efficient Sewage Treatment: Three-chamber anaerobic fermentation design achieves twice the decay effect of traditional septic tanks. Small Footprint: Compact size with large effective volume, saving land excavation area and improving land utilization. Easy Installation & Maintenance: Lightweight design allows for quick transport and installation. No power needed and low maintenance cost. High Safety & Flame Retardant: Excellent electrical insulation, non-electromagnetic, and flame propagation rate does not exceed 25. Customizable Options: Surface treatment, cutting, and application can be customized. MOQ is 5 sets.