Overview of plastic biodigester
Construction Design of NBP Model
The model is a fixed dome individual (household) biodigesters designed by National Biodigester Program (NBP) based on Deebandoo model from India. The plant is constructed with local materials, bricks, sand, and cement and has an estimated lifetime of 20 years. The technology is suitable for both pig and cattle dung, and households are encouraged (but not forced) to connect a latrine. The total size is ranging from 4m3 to 15m3 depending on family size and resource available. While the material cost is increasing, and average cost of each plant, refer to 4m3, is currently up to 450 USD per plant, and even higher cost of a completed construction in some remote provinces where the construction materials are expensive. The technology is very popular in the provinces around Phnom Penh city as the materials are easy to access by in-land transportation, especially bricks.
Construction Design of EcoSun