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畜牧场饲养畜禽的有机废物排放量统计资料表明,每头猪饲喂8个月排粪量为0.8～1.05t;每头羊年排粪量为0.55t;每头牛年排粪量为10t以上,每只鸡(鸭)年排粪量7～10kg。以此为原料生产沼气,其燃烧值为23.03～25.12MJ/m~3,常温发酵池产沼气率为0.2～0.25m~3/d·m~3,人均生活日耗沼气量0.3m~3。沼渣、沼液肥效高,施用方法简便,有利于提高土壤肥力且其养分较丰富,含多种氨基酸和大量矿物质元素,以此繁殖单细胞微生物可作为水产养殖优质饵料和畜牧饲料添加剂。因此,建立以畜牧业开发为核心,以沼气开发为纽带,带动植物性生产的循环利用模式能促进增产增值,变废为宝,在获得较大
The statistical data of organic waste emissions from livestock farms shows that the excreta amount of each pig is 0.8 ~ 1.05t for 8 months and 0.55t per sheep year, and the amount of defecation per cow is 10t Above, each chicken (duck) annual defecation volume 7 ~ 10kg. As a raw material, biogas is produced with a burning value of 23.03-25.12MJ / m 3, biogas production rate of 0.2-0.25m 3 / dm 3 at normal temperature, biogas consumption per capita of 0.3m 3 . Biogas residue and biogas slurry have high fertilizer efficiency and simple application method, which is beneficial to improving soil fertility and rich in nutrients, and contains a plurality of amino acids and a large amount of mineral elements. Breeding single-cell microorganisms can be used as high-quality bait and livestock feed additive in aquaculture. Therefore, the establishment of animal husbandry development as the core, with biogas development as a link, promote the recycling of plant production patterns can promote the value-added, turning waste into treasure, access to larger