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Black film anaerobic biogas digester, HDPE black film anaerobic biogas digester. Its principle of producing biogas is the same as that of traditional biogas digesters, utilizing the HDPE film's waterproofing and leakage prevention characteristics. A layer of HDPE waterproofing membrane is laid in the excavated pit. According to the requirements of the anaerobic fermentation process, inlets and outlets, sludge extraction pipes, and biogas collection pipes are installed inside the pit. The top of the pit is then sealed with an HDPE waterproofing membrane, anchored by a fixed trench around the perimeter, creating an integrated anaerobic fermentation space.
Many points of black film biogas.
1. Large capacity. For example, a biogas digester with a designed capacity of 10,000 cubic meters, the sludge fermentation time exceeds 50 days.
2. Automatic water sludge separation. Utilizing the pressure in the pond, the water pressure pushes the bottom sludge out of the biogas digester, while the upper liquid automatically drains out.
3. Fast construction time. A large biogas digester can be built in just 10 days, allowing for quick generation of benefits.
4. Low construction costs. Construction cost per cubic meter is just one-tenth of traditional biogas digesters.
5. Low operational costs. Routine operation expenses are solely for the electricity used in pumping, with water, sludge, and gas being processed through the biogas pond system itself.
6. User-friendly and easy to maintain. The pool structure is sturdy and resistant to collapse, with easy repair options for any film damage.
7. Fermentation with high gas production. Wastewater remains in the biogas digester for an extended period, maintaining temperatures around 70 degrees Celsius. The COD of wastewater treated in the biogas digester can be reduced by over 90%.
8. High economic benefits. A 10,000-cubic-meter biogas digester produces 2,000 cubic meters of biogas daily, generating approximately 3,600 degrees of electricity, which is roughly equivalent to 1,500 yuan per day.
