黑膜沼氣池是現在很多養殖場沼氣制取裝置中的一個重要部分，目前在全國已有很多**工程，該技術是2003年引入中國，得到很多養殖場業主的高度評價，本工藝技術產氣量大，花錢少，能有效的降解污水中COD與BOD的濃度，沼氣池首**行開挖建池，底部采用防滲膜鋪設，防滲膜具有很好的防滲效果，不會污染地下水，**部采用黑膜將沼氣池覆蓋進行全密封，明顯減少氣味，保護周圍環境。沼氣可轉化為電能，給豬舍保暖，養殖場照明、做飯等生活用電，做肥料種蔬菜瓜果，沼渣可直接排到魚塘做飼料。

Black film biogas digesters are an important part of many biogas production facilities in aquaculture farms. There are already many * * projects across the country. This technology was introduced to China in 2003 and has been highly praised by many farm owners. This process technology has a large gas production capacity, low cost, and can effectively degrade the concentration of COD and BOD in sewage. The first row of the biogas digester is excavated and built, and the bottom is covered with anti-seepage film, which has good anti-seepage effect and will not pollute groundwater. The * * part is covered with black film for full sealing, significantly reducing odor and protecting the surrounding environment. Biogas can be converted into electricity to keep pig houses warm, provide lighting and cooking electricity for livestock farms, and be used as fertilizer for growing vegetables and fruits. Biogas residue can be directly discharged into fish ponds as feed.

黑膜沼氣池具備建設成本低（每立方設備造價約40-90元），施工方便，建設周期大概30天完工，糞污在密封的沼氣池內停留時間長，使糞污中的**物厭氧得較徹底，消化較充分，出來的水基本能達標，池底設有自動排渣裝置，池內污泥量少，維護管理方便，可減少人力物力，沼氣容積大，產氣量高，能進的糞污比常規的沼氣池多一二十倍，氣柜只能儲存200立方米的沼氣，而黑膜沼氣池則能存儲兩三千立方米的沼氣，還能節省污水處理費和肥料費用等，同時，黑膜沼氣池還能很好地解決混凝土沼氣工程因溫度變化而產生收縮、脹裂引起的滲水、漏水、漏氣問題以及地面式鋼板沼氣工程的鋼板易腐蝕、管道易堵塞、設備易損壞、運行費用高等問題。

The black film biogas digester has low construction costs (about 40-90 yuan per cubic meter of equipment), easy construction, and a construction period of about 30 days. The manure stays in the sealed biogas digester for a long time, making the * * substances in the manure more thoroughly anaerobically digested and the water discharged basically meet the standards. The bottom of the digester is equipped with an automatic slag discharge device, which reduces the amount of sludge in the digester, makes maintenance and management convenient, and can reduce manpower and material resources. The biogas volume is large, the gas production is high, and the amount of manure that can enter is about ten to twenty times more than that of conventional biogas digesters. The gas holder can only store 200 cubic meters of biogas, while the black film biogas digester can store two to three thousand cubic meters of biogas, and can also save sewage treatment and fertilizer costs. At the same time, the black film biogas digester The pool can also effectively solve the problems of water seepage and leakage caused by shrinkage and expansion cracks in concrete biogas engineering due to temperature changes The problem of gas leakage and the corrosion of steel plates, blockage of pipelines, damage to equipment, and high operating costs in ground-based steel plate biogas projects.