【摘要】 针对秸秆类废弃物厌氧发酵的速度慢以及常规的氨化预处理后物料氨氮含量高影响后续厌氧发酵的问题,提出鸡粪和稻秆混合物氨化预处理工艺,并在稻秆长度10mm及混合物C/N为25:1的条件下,研究氨化温度30℃和35℃对混合物TS降解率、VS降解率、氨氮含量和挥发性脂肪酸的影响。结果表明:鸡粪和稻秆混合物可以取得较好的氨化预处理效果,并可以实现TS和VS的部分降解,而且氨化后产生的挥发性脂肪酸主要以乙酸为主;温度对鸡粪和稻秆混合物氨化预处理具有一定影响,30℃时的氨化预处理各指标均优于35℃。更多还原

【Abstract】 Ammoniation pretreatment technology of chicken manure and rice straw was put forward for the slow speed of anaerobic fermentation of straw waste and for the subsequent anaerobic fermentation influenced by materials still having high levels of ammonia nitrogen after conventional ammoniation pretreatment.The influences of ammoniation temperature at 30℃ and 35℃ respectively on TS degradation rate,VS degradation rate,ammonia nitrogen concentration and VFA of mixture were studied under the condition of rice straw length being 10mm and mixture C/N being 25:1.The results indicated that a better ammoniation pretreatment effect of chicken manure and rice straw could be achieved,TS and VS could be degraded partly and VFA generated after ammoniation was primarily acetic acid;ammoniation pretreatment of chicken manure and rice straw could be influenced by temperature to some degree and the indexes of ammoniation pretreatment at30℃ were all superior to those at 35℃.更多还原