In response to environmental protection, farms are now common to build gas pool, pool black membrane integrating fermentation, gas storage, the anti-seepage film material will be closed, the anaerobic pond is simple in construction is convenient, fast, low cost, simple process, convenient operation maintenance, water retention time is long, digestive methane content more fully, sealed performance is good, impervious membrane material of high tensile strength, anti-aging and strong corrosion resistance, good anti-seepage effect, increasing heat preservation effect is good (using biogas power generation of waste heat, black membrane absorb sunlight), in less quantity of sludge automatic discharge device is installed (bottom), etc. The biogas in determining environmental effect is the bog and decisive. Gas tank impermeable film, but once the biogas tank geofilm leakage, the consequences are more serious. The whole project wasted all the previous work.

So farm biogas pool how to choose geomembrane?

HDPE antiseepage film, choose high quality polyethylene native resin main ingredients for 97.5% of the high density polyethylene, about 2.5% of the carbon black, anti-aging agent, antioxidant, uv absorber, stabilizer and other accessories, with the current international advanced automatic geotechnical production equipment, through three layers co-extrusion technology. All products are based on U.S. standards and ASTM GRI

Testing standard production. The choice of the basement membrane suggested using gb standard 1.0 mm above the anti-seepage film as bottom film, any block of geomembrane demand standard is high, it is recommended to use not less than 1.5 mm of standard American standard of geomembrane, formal standard American standard geomembrane is used blow molding process, rather than individual undesirable businessman now looks very beautiful film calendering process of so-called geomembrane can amount to mark, because the production technology determines the index of the anti-seepage film make sure those goals are met.

In addition, the construction of black film methane should pay attention to the following matters:

1. Do not put weeds, bricks, tiles, stones, etc. into the digester to avoid scraping or blocking the digester

3. The intake of the biogas digester (sewage entering the entrance) should be avoided from branches, plastic bags and other debris entering and causing the intake to be blocked

4. A fence should be set around the digester,100m of methane with a warning sign, fireworks are strictly prohibited, to avoid people other than staff near

5. The normal height of gas cap bulking in the biogas digester is 3-4m. If it is 5m higher, exhaust pipe shall be used for treatment

6. Methane digester 100m to set up a biogas heavy, fireworks and other signs are prohibited

7. The intake of biogas digester (sewage entering the passageway) should avoid branches, plastic bags and other debris to enter and cause the intake to be blocked

8. If the top membrane of the biogas digester is damaged and methane leakage occurs, adhesive materials such as tape should be used to seal the damaged part to avoid methane leakage.