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Construction of 1.50 mm HDPE geomembrane in biogas digester of aquaculture farm

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  • Description
  • Construction of 1.50 mm HDPE geomembrane in biogas digester of aquaculture farm

    Construction process of black film biogas digester:
    Excavation - > Embedded Pipeline - > Excavation and Anchorage Ditch - > Black Film Laying - > Water Testing at the Bottom of Black Film Biogas Pool - > Top Film Laying - > Anchorage Ditch Backfilling

    A. Process flow: (construction of pond)

    A black-film biogas digester is constructed in the farm. The location of the biogas digester depends on the specific conditions of the farm.
    Technical engineers are required to dig the pool before it is built and excavate along the laid size.
    The shape of biogas digester should be rectangular, and the slopes around the digester should be flat and uniform.
    Anchor hook is excavated at 1 m edge of biogas digester, which is 1 m wide and 1 m deep. It is used to fix the bottom membrane and the top membrane to prevent wind blowing.

    Construction of 1.50 mm HDPE geomembrane in biogas digester of aquaculture farm


    B. Process Flow: (Pipeline Laying)

    After digging the biogas digester, blind hooks are excavated according to the actual situation of the site, and intake pipe, outlet pipe, slag discharge pipe and exhaust pipe are laid.

    C. Process flow: (bottom film laying)

    The bottom membrane of biogas digester is laid with 1.20 mm thickness HDPE anti-seepage film, which is 50M long and 6M wide.
    It has good anti-corrosion, moisture-proof, anti-leakage, anti-aging, anti-ultraviolet and so on.
    It can be used barely, and the service life of the material can reach 20-30 years.
    Before laying the bottom membrane, it is necessary to check whether it is damaged or broken, and cut HDPE anti-seepage film according to the actual topographic size of the site.
    Lay anti-seepage film in sequence, and the laid anti-seepage film should be compacted with sand bags to prevent being blown up by the wind.

    Construction of 1.50 mm HDPE geomembrane in biogas digester of aquaculture farm



    D. Process Flow: (Top Film Laying)

    The top membrane of biogas digester is laid with 1.5mm thick black film (the performance is the same as that of the bottom membrane).
    HDPE anti-seepage film is cut according to the actual topographic size of the site and laid sequentially to cover the whole biogas digester.
    After the top film is laid, the welded bottom film and the top film are embedded in the anchorage ditch and fixed.

    Construction of 1.50 mm HDPE geomembrane in biogas digester of aquaculture farm
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