用于提升回流污泥或带渣质废水，能起到轴流泵所不及的作用。
For promotion of sludge or slag backflow qualitative wastewater, can play the role that less reliable.
通过选择适宜溶剂，对一步酶法提取阶段所得渣质进行二步溶剂提取，达到充分提取有效成分的目的。
The residue from enzyme-based step can be further extracted in the second solvent-based step by selecting proper solvent in order to extract effective component sufficiently.
采用渣柱法和熔化率法两种不同的测试方式进行了碳质材料与保护渣熔化速度的关系研究。
The slag column method and the melting ratio method were used to show the relationship between the carbon materials added and the melting rate of fluxes.
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