In recent years, biosorption is an emerging technology to remove metals from solution, with its rich source of raw materials, low cost and no secondary pollution.
生物吸附法是近年来新兴的一种水处理方法，有原料来源丰富，成本低，无二次污染等特点。
Finally, on the basis of investigation, the prevention and control of pollution for the secondary area of water source were studied and discussed.
最后，在调研基础上对二级保护区的污染防治工程规划工作进行研究和探讨。
Chlorine containing plastics (polyvinyl chloride) in municipal waste are a major source of corrosion and secondary pollution in municipal solid waste incinerators.
存在于城市生活垃圾中的含氯塑料（如PVC等）是造成垃圾焚烧电站设备腐蚀和二次污染的主要因素。
The utility model has the advantages of high efficiency, simple structure, energy saving, water source saving and no secondary pollution, and dust removing efficiency can reach 98 %.
本实用新型效率高、结构简单、节省能源和水源，无二次污染。除尘效率可达98%。
The utility model has the advantages of high efficiency, simple structure, energy saving, water source saving and no secondary pollution, and dust removing efficiency can reach 98 %.
本实用新型效率高、结构简单、节省能源和水源，无二次污染。除尘效率可达98%。
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