安徽农业科学2018，Vol.46Issue(11)：180-184,214,6.
江西省规模化养殖场调查及沼液理化性质研究
Investigation of Large-scale Farms and Research on Physical andC hemical Characteristics of Digested Slurry in Jiangxi Province
摘要
Abstract
Aiming at a series of rural environmental pollution problems of the fecal pollution treatment in large-scale farms, taking 8 large-scale farms and field biogas projects in Jiangxi Province as research object, the basic information of farms and biogas projects were obtained, and the atmospheric environment in the farms was monitored.Meanwhile,samples of feed pool, fermenting tank and biogas liquid pool were collected, and the physical and chemical properties of the collected material were detected and analyzed.The results showed that:biogas engi-neering design and construction specifications and facilities were relatively complete,mainly using livestock and poultry manure as raw materi-als, but the feed material TS<3%, with low concentration fermentation.The fermentation temperature was mainly medium temperature fer-mentation.Because of the low temperature in winter,it was difficult to reach the medium temperature fermentation standard(25-40 ℃).The biogas utilization method is single,and there is seasonal difference in biogas production,the biogas production in summer is high,and the gas production in winter is low.The comprehensive utilization of biogas slurry and biogas residue inadequate facilities, and the way of use is not standard.Under the concentration of odor pollutants,the wind direction is higher than the upper wind direction,and winter is higher than that of summer.The daily average values of NH3and H2S concentrations in summer and winter were 0.078 and 0.011 mg/m3, 0.104 and 0.016 mg/m3, respectively, which were all lower than those specified by the state.The pH value of the feed liquid from the feed pool to the biogas slurry tank is between 7.2-7.4, showing neutral and weak alkaline.After anaerobic fermentation, the contents of NH4-N, TN and COD in biogas slurry are >400, >800 and >1 400 mg/L,respectively,the nutrient content is still very high.The results can provide a ref-erence for the healthy operation and development of large-scale farms and biogas engineering.关键词
规模化养殖场/沼气工程/沼气/沼液/理化性质Key words
Large-scale farms/Biogas engineering/Biogas/Anaerobically digested slurry/Physical and chemical characteristics分类
农业科技引用本文复制引用
李生,郑林,张英,陆远鸿..江西省规模化养殖场调查及沼液理化性质研究[J].安徽农业科学,2018,46(11):180-184,214,6.基金项目
江西省重大生态安全问题监控协同创新中心资助项目(JXS-EW-00). （JXS-EW-00）
