Utilization system of greenhouse gases generated in composting process of agricultural

本研究取得了以下研究成果：(1)为了将堆肥沼气用于生物生产，研制了土壤微生物滤池回收氨氮并将其转化为营养物质的实验系统。系统运行良好，但硫化物等微量气体不能被生物滤池去除，是生长的障碍。垃圾堆肥过程中产生的微量气体通过蜂窝状催化过滤器去除后，可用于农作物种植。(2)以土壤和木屑为对照，对垃圾堆肥过程中产生的微量气体进行了检测。土壤抑制甲硫醇生成的能力高于木屑，但木屑能有效地控制甲硫醚的生成。(3)可供家庭或S…使用的堆肥沼气小型植物栽培系统更多的学前教育受到了考验。堆肥气体被困在水中，并被提供给植物生长基质的土壤。用气相色谱仪和少量土样测定土壤呼吸速率，以区分微生物在土壤脱臭剂中的反应，探讨了供气对土壤菌生长的影响。由于本实验测得的土壤呼吸速率与氢氧化钠法测得的土壤呼吸速率值具有较高的相关性，因此通过调整土量与培养瓶体积的比例，也可以减少土壤采样量，缩短培养时间。(5)通过测定土壤脱臭剂中线虫和微节肢动物相的变化，考察脱臭过程中土壤生物量的变化。随着时间的推移，蚂蚁、甲虫等大型节肢动物逐渐减少，线虫逐渐增多。在土壤除臭剂的封闭系统中，被认为是营养水平最高的物种似乎是刺激性粉虱和田鼠。较少

The following results were obtained by this research.(1) The experimental system which recovers the ammonia and converts the ammonia into the nutrient with the soil and microorganism filter was manufactured experimentally in order to utilize the compost gas in the biological production. The system works well, however, the trace gas such as sulfur compound could not removed by the biofilter and was the barrier to growth. The carbon dioxide in the compost gas could be utilized for crop cultivation after the removing process of the trace gas through the honeycomb type catalytic filter.(2) The trace gas generated in the composting process of the garbage was examined comparing with the moist control material of the soil and the sawdust. The ability of soil to suppress the generation of methyl mercaptan was higher than the sawdust, but the methyl sulfide was controlled with the sawdust effectively.(3) A small-scale plant culture system using the compost gas which can be used in the home or s … More chool education was tested. The compost gas was trapped in the water and it was supplied to the soil of the plant growth media. The possibility in which gas supply is effective on the growth was shown by the experiment of komatsuna cultivation.(4) Shortening method of the soil respiration rate measurement using the gaschromatograph and the little soil sample was examined in order to distinguish the reaction of the biota in the soil deodorizer. Quantity reduction of soil sampling and shortening in culture time were also possible if the ratio between soil quantity and volume of the culture bottle was adjusted because the soil respiration rate measured with this experiment had high correlation with value of the NaOH method.(5) The change of nematode phase and microarthropod phase in the soil deodorizer was measured to examine the soil biomass variation in the deodorization process. Large arthropods such as ant and beetle were decreased, and Nematoda were increased with the progress of day. In the closed system of the soil deodorizer, species regarded as a top of trophic level seemed to be prickle acarine and trombiculid mite. Less