3) contamination level and type
沾污水平与类型
4) types of groundwater pollution sites
地下水污染场地类型
5) algae sewerage
藻类污水
1.
Using PASS,PFSS they were built with clay as coagulating agents,the effect of floecuiation on algae sewerage treated four coagulating agents was investigated through change of algae sewerage,its turbidity and COD determined.
以硅酸钠、硫酸铝和硫酸铁为原料,采用复合共聚法制备出聚硅硫酸铝(PASS)和聚硅硫酸铁(PFSS),分别以聚硅硫酸铝、聚硅硫酸铁和两者与天然粘土的复配为混凝剂,观察净化处理后的藻类污水颜色的变化以及对溶液浊度、耗氧量(COD)的测定,考察4种混凝剂对藻类污水絮凝效果的优异。
6) two kinds of sewage
两类污水
补充资料：血液有形成分各种类型的血细胞虚线指示中间类型的细胞。
李瑞端绘
[图]
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条