N → same as deposition
Using waste slag of aluminum factory to synthesize cordierite is a way for comprehensive deposal and reusing the waste.
本课题采用铝型材厂工业污泥合成堇青石材料及其应用，属于固体废弃物的综合利用和变废为宝的项目。
Adopting prior and posterior deposal system met the demands of filtrating, removing ammonia, rising oxygen, sterilizing and antisepsis.
采用前、后处理系统来满足过滤、除氨氮、杀菌消毒、增氧等需要。
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