花园宝宝英文版evennumber专利名称：TRICKING FILTER
关于健康的英语手抄报
backbone发明人：YAKUSHIJI KAZUNARI,OOMAE HARUKI 申请号：JP15128780一路平安英文
申请日：19801027
公开号：JPS5775189A
公开日：
19820511
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专利内容由知识产权出版社提供
新目标九年级英语听力>great expectations
periodical
摘要：PURPOSE:To obtain a packing material for trickling filters which are difficult to clog by constituting the trickling filter for wage treatment by packing gravel-like crushed blast furnace slag. CONSTITUTION:The blast furnace slag obtained by cooling slowly the molten slag byproduced from a blast furnace in iron making is crushed. Gravel-like materials 1 of >=5mm. diameters made by this are packed to form a trickling filter. This filter bed is distributed uniformly with microbe membranes and has high adhesive power; therefore, short circuiting with microbes is difficult to occur. Hence, the life of the packing material is extended and the times for exchanging the same are decread.
申请人：NITSUSHIN SEIKOU KK
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