Product Overview: Column-point geomembrane for sewage pits is a heavy-duty liner with cylindrical column points, designed to provide waterproofing and drainage for underground sewage storage facilities. Made of reinforced HDPE, it offers high compressive strength to withstand soil pressure and the weight of sewage, while the column points create a gap for the drainage of groundwater, preventing membrane bulging.
Application Scenario: Used for lining residential septic tanks, commercial sewage pits, and rural decentralized sewage treatment facilities. It effectively prevents sewage leakage, protecting groundwater and soil from contamination. The column-point design allows for efficient drainage of surrounding groundwater, avoiding damage to the liner caused by hydrostatic pressure. It is resistant to corrosion from sewage and septic tank chemicals, ensuring long-term use.
Key Advantages: ① Column-point structure drains groundwater, reducing hydrostatic pressure on the liner; ② High compressive strength withstands soil pressure and sewage weight; ③ Resistant to sewage, septic tank chemicals, and biological degradation; ④ Easy to install in underground sewage pit environments; ⑤ Non-toxic and complies with environmental protection standards for sewage treatment.