蚯蚓粪对鲜鸡粪发酵后NH_3和H_2S的去除效果

Removal Effect of Vermicompost on NH_3 and H_2S in Leavening of Fresh Chicken Manure( Experiment)

采用锯末与蚯蚓粪作为垫料对鸡粪进行了除臭试验。利用锯末、蚯蚓粪及二者合用分别对鲜鸡粪处理,测定其对NH3和H2S的去除效果,同时观测了锯末与蚯蚓粪处于垫料的不同位置对鸡粪中NH3和H2S的去除效果,并对混合垫料处理后的鸡粪进行了N,P,K质量分数的常规测定。结果显示,蚯蚓粪显著优于锯末对NH3的去除效果,而对H2S的去除效果两者之间差异不显著。锯末垫料中加入蚯蚓粪提高了鸡粪中K的质量分数。表明蚯蚓粪与锯末同时作为垫料使用可以有效地去除鸡粪中的NH3,H2S,改善鸡舍空气质量,同时还可以提高鸡粪中K的质量分数,提高鸡粪在农业生产上的利用价值。

In this paper,we used the mixed sawdust and earthworm dung as litter in the henhouse to deodorize harmful gases. Sawdust,earthworm dung and the mixed sawdust and earthworm dung were used separately to treat chicken manure to study the removal effect of them on ammonia and hydrogen sulfide. On the basis of this,the adsorption effect on ammonia and hydrogen sulfide of mixed sawdust and earthworm dung with different position in the litter also be studied. The contents of nitrogen,phosphorus and potassium in the chicken manure which treated by mixed litter were determined. The result shows that the removal effect of vermicompost on ammonia is more significant compared with the sawdust; There was no significant difference between the removal effect of hydrogen sulfide and hydrogen sulfide; Adding vermicompost in the sawdust litter increased the content of potassium in chicken manure. Therefore,the mixed earthworm dung and sawdust litter can remove NH3,H2 S in chicken manure effectively,and can improve the air quality of the henhouse. At the same time,it can improve the content of potassium in chicken manure,which can improve the utilization value of chicken manure in agriculture.