摘要
In this study, chicken manure and Caragana korshinskii Kom powder were used as the main raw materials with different amounts of biochar added to test four aerobic composting treatment groups A, B, C and D with laboratory composting fermenters and testing apparatus, and new insight into biochar’s nitrogen conservation mechanism was gotten, based on the experimental data and related exploration such as the physical and chemical properties of the final products, the changing interactions among nutrient elements and other elements, and the relationship between substrate degradation and the amount of biochar used as well as the best formula for reducing ammonia emission. The results showed that the proper proportion of the added biochar to the other elements was conducive to less ammonia emission and nitrogen loss during the aerobic composting. The composting effect of Treatment C （biochar at 20%） was the optimal in the test, where in the composting temperature rose the most rapid and the earliest to the maximum temperature 52.5℃, with the least nitrogen loss. An effective, safe and high-quality resource utilization of chicken manure was established through the aerobic composting with reasonable material mixture proportion.
以鸡粪和柠条粉末为主要原料,通过添加不等量的生物炭,利用实验室堆肥发酵桶和检测装置进行了A、B、C、D四组好氧堆肥试验,基于获取的主要理化、NH3、营养元素变化等动态数据,研究了基质降解情况与生物炭用量的关系以及生物炭保氮效果的适宜配比。试验结果表明:添加生物炭有利于鸡粪好氧堆肥过程氨气减排和减少氮素损失;试验中处理C(20%生物炭)的堆肥效果最佳,其堆体升温最快且最先达到最高温度52.5℃,营养氮素损失最少。通过合理物料配比的好氧堆肥形式可以更有效地实现鸡粪安全、优质资源化利用。
基金
Supported by Science and Technology Key Program of Shanxi Province(20150311016-3)~~
