一、禽畜场办沼气的必要性和可行性。随着城乡人民生活水平的提高,我国食品构成已发生明显变化:奶、肉、蛋的需求量不断上升,城乡集体或个体的养鸡场、乳牛场、养猪场也逐渐增多。这些禽畜场的规模大小不等,少至几百头(只),多至数万头。在饲养过程中排出大量粪 First, the poultry farm to do the necessity and feasibility of biogas. With the improvement of people’s living standards in both urban and rural areas, the composition of food in our country has undergone obvious changes: the demand for milk, meat and eggs is on the rise. The number of chicken farms, dairy farms and pig farms in urban and rural areas is also gradually increasing. These poultry farms vary in size from as few as 100 (only) to as many as tens of thousands of heads. In the breeding process excretion of large amounts of manure