The wastewater of hexanolactam (nylon) fiber production in Shijiazhuang Synthetic Fiber manufactory is high concentrated with organic nitrogen compounds.
己酰胺锦纶化纤废水属于高含氮高浓度有机废水。
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It forecast that stormy weather will persist on Monday in parts of Zhangjiakou, Chengde, Tangshan, Baoding, the Xiong'an New Area, Langfang, and Shijiazhuang, the provincial capital, with accumulative precipitation likely exceeding 250 mm in some areas.
据预,口、承德、唐山、保定、雄安新区、廊坊和省会石庄的部分地区将持续暴风雨天气,部分地区累计降水量可能超过 250 毫米。