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达禹环境-环保百科 当前位置: 达禹环境 > 环保百科 > 农业废弃物厌氧发酵及沼肥利用全过程碳氮变化研究
农业废弃物厌氧发酵及沼肥利用全过程碳氮变化研究
时间 : 2019-03-04 浏览量 : 78

沼气池厌氧消化产沼气技术是农业废弃物无害化处理与资源化利用的重要途径,是促进生态循环农业发展的重要举措12)。十三五期间,我国将以沼气和生物天然气为主要处理方向,基本解决大规模畜禽养殖场粪污处理和资源化问题,大中型沼气工程


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提高物料产气率、保持操作稳定性和沼液质量是提高沼气工程效益的重要因子6。然而,物料在  沼气池厌氧消化过程中会有一些抑制物质,如重金属(Cu,Zn,Cr,Cd,Ni,Pb和Hg等)、盐类(Na,K,Mg,Ca,A等)、氯酚及卤代脂肪族化合物、杀虫剂及抗生素、木质素水解产物等直接抑制物,以及消化过程中产生的挥发性脂肪酸、长链脂肪酸、柠檬烯、硫化物和无机氮等间接抑制物,严重影响产气率及系统稳定性。其中,重金属、盐类和抗生素等物质在猪粪中的含量较高”,很可能成为沼气池厌氧消化过程的抑制物质。将猪粪与秸秆等物料混合发酵是降低单发酵中抑制物质不利影响的有效手段。然而,与  欧洲等国家的大型沼气工程不同,我国养殖场沼气工程发酵原料单一、缺乏原料供应服务0,多原料混合沼气池厌氧消化操作和过程控制对于沼气池厌氧消化原料较为单一的养猪场较难应用。活性炭可用于猪粪沼气池厌氧发酵彩经网,具有减少沼气池厌氧消化启动阶段有机负荷冲击、可吸附抑制性的硫化物、加速产甲烷菌群累积,以及提高猪粪沼气池厌氧消化产甲烷率的作用2。但是活性炭价格昂贵,需从沼气池厌氧消化剩余物中回收再利用才能减少运行成本,操作不便。因此,研究低成本、简便、高效且环保的猪粪沼气池厌氧消化产气率促进方法,对规模猪场沼气工程的实际运行具有迫切的应用价值

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(2)TIANJIAZHUFENZHAOZHASHUIRETANKETIGAOZHUFENZHONGWENZHAOQICHIYANYANGFAJIAO(TS=4%)DEXIAOHUAXIAOLV(T9),SUODUANZHAOQICHIYANYANGXIAOHUADEYANZHIQIDANDUITS=8%DEXITONGZEXIANGFAN。ZHAOZHASHUIRETANYOULIANGDETEXINGSHIHUANJIEZHAOQICHIYANYANGXIAOHUAGUOCHENGZHONGZHONGJIANDAIXIEWUZHIDE  YIZHICUJINWEISHENGWUJIANDEDIANZICHUANDI、TIGAOZHUFENZHAOQICHIYANYANGXIAOHUA  CHANQIHECHANJIAWANDEZHUYAOYUANYIN。


ZHAIZI《ZHONGGUOZHAOQI》2018DIYIQI LIUYE ZHAOLIXIN SHENYUJUN MENGHAIBO


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山东达禹环境工程有限公司已在沼气工程领域深耕十年,有着丰富的行业经验,生产各种沼气设备,承接大中小各种规模的沼气工程,承建黑膜沼气池红泥膜沼气池等各种软体沼气池及双膜气柜、集雨窑等,同时生产加工各类液袋水囊、桥梁预压水袋、森林消防水袋、可拆卸游泳池彩经网等,欢迎新老客户洽谈合作,共谋发展!


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