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当前位置: 首页 > 文章 > 猪粪沼液贮存过程中养分变化 农业环境科学学报 2012 (12) 2493-2499
Position: Home > Articles > Changes of Nutrients in Anaerobically Digested Slurry of Pig Manure During Storage Journal of Agro-Environment Science 2012 (12) 2493-2499

猪粪沼液贮存过程中养分变化

作  者：
吴华山;郭德杰;马艳;常志州
单  位：
江苏省农业科学院农业资源与环境研究所
关键词：
猪粪沼液;贮存;养分;变化
摘  要：
为实现沼液养分有效利用与管理,研究了规模化养猪场沼液在不同季节、不同方式贮存条件下,沼液中COD、pH、TN、TP、TK等变化,结果表明:贮存90d后,沼液中TN、TP、TK含量分别减少了67.22%～84.31%、59.70%～93.45%、35.27%～80.25%,COD下降了24.78%～42.96%;贮存期内铵态氮含量持续下降,至60d后基本保持稳定,90d后4个处理铵态氮减少了75.35%～89.71%,硝态氮含量增加了3～6倍。比较不同季节,在贮存期前60d内,夏秋季的COD浓度以及TN、TP、NH+4-N下降幅度高于冬春季,而在贮存60d后,冬春季贮存沼液中TN、TP、NH+4-N下降幅度显著高于夏秋季;沼液加盖贮存,在前期可减少沼液中TN、TP、NH+4-N量的下降,但贮存90d时,其贮存方式对TN、TP、NH+4-N量变化的影响已不明显。试验结果为沼液的存放和农田施用提供了重要参数。
译  名：
Changes of Nutrients in Anaerobically Digested Slurry of Pig Manure During Storage
作  者：
WU Hua-shan,GUO De-jie,MA Yan,CHANG Zhi-zhou(Institute of Agricultural Resources and Environment,Jiangsu Academy of Agricultural Sciences,Nanjing 210014,China)
关键词：
anaerobically digested pig slurry;storage;nutrient;change
摘  要：
Changes of COD and nutrients content in anaerobically digested slurry(ADS) of pig manure produced from large biogas plant are monitored during 90-day storage under different conditions to achieve its effective utilization and management of nutrients The results showed that the contents of total N(TN),total P(TP),total K(TK) and COD decreased by 67.22%～84.31%,59.70%～93.45%,35.27%～ 80.25% and 24.78%～42.96%,respectively.The ammonium-N content decreased constantly in the 60-day storage time and remained stable in the next 30 days.The ammonium-N concentration reduced by 75.35% ～89.71% while the nitrate content increased by 4 ～6 folds after storage for 90 days.During the first 60 days,the decrement of concentration of COD,TN,TP,TK,ammonium-N and nitrate was more signif-icant in Summer-Autumn than those of in Winter-Spring.However,the reduction of T-N,T-P and ammonium-N contents were more signifi-cant in Winter-Spring than those of in Summer-Autumn 60 days later.The ADS stored in sedimentation pond covered by lid lessened the de-creasement of TN,TP and ammonium-N contents during the early period of storage.No significant differences on the changes of TN,TP and ammonium-N contents of ADS in sedimentation pools covered or uncovered were found after 90 days of storage.The above-results provided important information for reasonable storage and application of ADS.

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