ass日本风韵熟妇pics男人扒开女人屁屁桶到爽|扒开胸露出奶头亲吻视频|邻居少妇的诱惑|人人妻在线播放|日日摸夜夜摸狠狠摸婷婷|制服 丝袜 人妻|激情熟妇中文字幕|看黄色欧美特一级|日本av人妻系列|高潮对白av,丰满岳妇乱熟妇之荡,日本丰满熟妇乱又伦,日韩欧美一区二区三区在线

The small and medium-sized scale pig farm in China has problems such as low efficiency of collection and utilization of manure, lack of corresponding processing equipment. Aerobic composting is an effective technology for the treatment and reuse of solid organic wastes in the form of organic fertilizer. The rapidly high temperature aerobic composting process and experiment were determined by calculating the amount of manure generation and collection, combined with the pig existing infrastructure on a scale farm with 2000 pigs. Then the equipment was verified in this pig farm. The results showed that 60% of the daily production wastes was solid manure which was about 1.2t and the main structure covered an area of 485.5m2 in which equipment covered an area of 13.2m2. The total nitrogen loss rate, total phosphorus loss rate and total potassium loss rate during the rapid aerobic compost process was 8.3%, 1.7% and 0, respectively. In addition, the moisture content of compost was 43% and the death rate of lumbricoid egg was 100%. Also, the number of fecal coliforms was less than 3CFU/g. These indicated the compost reached the standard of harmless hygiene in relevant industries. The average daily energy consumption of the fermentation tank was 63.5kW·h/d under the environmental conditions of 10~25℃. The adoption of this technical mode and equipment can realize daily cleaning, in situ treatment, timely conversion and return it to the field, which provided technical and equipment support for the harmless utilization of feces in small and medium-sized pig farms.