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不同发酵条件对饲料固态发酵效果的影响
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作者 贺宝云 刘世杰 +4 位作者 张明钧 李楠 卢红梅 强莉 战余铭 《养殖与饲料》 2024年第7期32-36,共5页
[目的]为研究不同发酵环境下饲料固态发酵效果的影响,优化发酵饲料固态发酵工艺。[方法]试验在室温10℃以下(平均室温5℃)分为温水启动发酵和冷水启动发酵2个组别,每个组别各2个重复;同时以常规标准发酵方法(在发酵房温度恒温30℃发酵7 ... [目的]为研究不同发酵环境下饲料固态发酵效果的影响,优化发酵饲料固态发酵工艺。[方法]试验在室温10℃以下(平均室温5℃)分为温水启动发酵和冷水启动发酵2个组别,每个组别各2个重复;同时以常规标准发酵方法(在发酵房温度恒温30℃发酵7 d后转入室温)作为对照组。分别检测料温、水分、pH、乳酸、乙醇、活菌数及感官观察等。[结果]发酵15 d时,对照组的水分绝对增长值明显高于其他3组,温水发酵的提高2.06百分点;对照组的pH已降到5.48,温水发酵包内的pH为5.92,其他3组的均在6.1以上;对照组的乳酸含量为9.48 g/kg,其他3组的均低于2.5 g/kg。[结论]在低温情况下,温水启动发酵明显优于冷水启动发酵;无论是温水启动发酵还是冷水启动发酵,即使延长发酵时间,也无法达到设定出库标准。 展开更多
关键词 发酵饲料 温水启动 冷水启动 室温 发酵效果
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Condensate Polishing System for PWR Nuclear Power Plant 被引量:4
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作者 A.L. Wang C.Y. Zhang +1 位作者 Y.Q. Yang L.L. Yin 《Journal of Energy and Power Engineering》 2011年第10期999-1004,共6页
In this paper, operation characteristic of condensate polishing system is studied during startup, based on generator blowdown limit, given limit ion concentration in condensate during condenser leakage. Further give c... In this paper, operation characteristic of condensate polishing system is studied during startup, based on generator blowdown limit, given limit ion concentration in condensate during condenser leakage. Further give conclusion about condensate polishing system configuration and operation requirement: full flow condensate polishing system (CPS) is necessary to the units cooled by sea water, and it is better that one or two series put in service during normal operation other than all of them in hot standby. While continuous condensate tube leakage is 256 L/h, the units cooled by fresh water will be shutdown immediately, for this level leakage, whichever condensate polishing system capacity is 50% (30%) or 100%, action level 2 will be preformed, so 50% (30%) is enough for fresh water cooled units. 展开更多
关键词 Condensate polishing system water quality operation.
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