Sodium formate from waste alkali liquor was analyzed by perchloric acid nonaqueous titration instead of potassium permanganate method, which caused larger deviation.
采用高氯酸非水滴定法分析废碱液中的甲酸钠，代替了误差较大的高锰酸钾法。
The method using soluble calcium salt for regeneration of waste electroless nickel plating liquor, in which the lactic acid used as complexing agent and hypophosphite used as redcing agent is studied.
研究了采用可溶性钙盐对以乳酸为络合剂，次磷酸盐为还原剂的失效化学镀镍溶液的再生。
Waste sulphuric acid liquor is used as raw material to produce polymer iron sulfate in a reaction vessel after concentration.
利用硫酸酸洗废液作为原料，经浓缩后在反应釜内生产聚合硫酸铁。
The PCB wastewater of Dajin Electronic Co. , Ltd is divided into washing wastewater, organic wastewater with high concentration, complexed wastewater, concentrated acid waste liquor etc.
本文介绍的达进电子有限公司PCB废水分为：清洗废水、高浓有机废水、络合废水、浓酸废液等废水。
Three flocculation systems, acid precipitation, PAC-CPAM, and PACS-CPAM were introduced to treat the waste liquor from twin-screw extrusion pulping respectively.
介绍了采用酸析絮凝、聚合氯化铝与聚丙烯酰胺（PAC-CPAM）絮凝、聚硫氯化铝与聚丙烯酰胺（PACS-CPAM）絮凝处理双螺旋挤压法制浆废液。
Three flocculation systems, acid precipitation, PAC-CPAM, and PACS-CPAM were introduced to treat the waste liquor from twin-screw extrusion pulping respectively.
介绍了采用酸析絮凝、聚合氯化铝与聚丙烯酰胺（PAC-CPAM）絮凝、聚硫氯化铝与聚丙烯酰胺（PACS-CPAM）絮凝处理双螺旋挤压法制浆废液。
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