做王者荣耀代练赚钱吗:翻译成英语文章,急!谢谢
来源:百度文库 编辑:高考问答 时间:2024/04/27 23:20:20
关键词:有效微生物EM 投药量 最佳投药量 COD 最佳运行时间
This article (divine intervention) processes the school area sanitary sewage through effective microorganism EM the condition experiment preliminary study EM processing sanitary sewage effect. The experimental result indicated that, Under normal temperature (18 ℃ ~ 25 ℃),Controls PH in 7.0 ~ 8.0, pairs 3 to throw dose 1/10000, 3./1 million, 5./1 million, throws dose 5/10000, 1./1 million processing effect throws the dose 3./1 million processing effect to be bad, best throws the dose is 3./1 million; In the treating processes the sewage COD value is first lengthens along with the process time but has obvious reducing, after reduces period of time (to move 2h), the COD value all suddenly presents the rise tendency, after rises again period of time (to move 4h), the COD value starts to drop. After moves 6h, COD achieves the most background. After the treating processes best running time is normal operation 6h.