三结合式沼气系统具有“占地小、组合优、外形美”的特点。其结构是:地下建沼气池,其上建太阳能拱棚暖圈,连接男女分厕,瓷便器式厕所。一般每套造价2400元左右。一、沼气池建造工艺沼气池规划在宅院一角,连接奶牛圈,建在地下,深度2米,直径2.7米,壁厚15～18厘米。1.池型:西北农 Three combined biogas system has the characteristics of “small footprint, excellent combination, beautiful appearance”. Its structure is: to build underground digesters, which built on the solar arch warm circle, connecting men and women to the toilet, porcelain toilet. Generally cost 2400 yuan each set. First, the digester construction process Digester planning corner of the house, connecting the cow ring, built in the ground, a depth of 2 meters, a diameter of 2.7 meters, wall thickness of 15 to 18 cm. 1. Pool type: Northwest farmers