不同异位发酵床垫料的粪污处理能力比较研究

Comparative Study on Fecal Disposal Capacity of Different Heterotopic Fermentation Mattresses

为了比较不同垫料的猪粪水消纳能力,本试验利用微生物异位发酵床技术,以锯末和稻壳为垫料,比较分析不同垫料配比的发酵工艺、发酵产物的理化性质及粪污消纳能力的差异。结果表明:在垫料含水量为70%的情况下,各垫料均能正常发酵。垫料温度整体呈先升高后降低的趋势,各垫料的55℃以上高温期均维持了20天以上,其中稻壳垫料的最高温度达到了69.5℃。垫料发酵过程中为弱碱性,随着发酵时间的增加,不同垫料的有机碳含量变化均不大,但氮含量不断减少,磷和钾含量有所上升。锯末垫料的粪污消纳能力是稻壳垫料的2倍,锯末比稻壳更适合用做发酵床的垫料。

To compare the absorption capacity of pig manure with different bedding materials, in this experiment, based on the technology of microbial heterotopic fermentation bed, the difference of fermentation technology, physicochemical properties of fermentation products and the ability to absorb feces between sawdust and rice husk were compared and analyzed. The results showed that under the condition of bedding moisture content of 70%, all the beddings could ferment normally. The temperature of bedding material increased first and then decreased, and the high temperature period above 55℃ of each cushion maintained for more than 20 days, the highest temperature of rice husk cushion reached 69.5℃. The pH value in the fermentation process of bedding material was weak alkaline, with the increase of fermentation time, the organic carbon content of different bedding materials did not change much, but the nitrogen content decreased continuously, and the phosphorus and potassium content increased. The sawdust cushion was more suitable as a bedding material for fermentation bed than rice husk, since its pig manure absorption capacity was twice of that of rice husk cushion,.