本powerpoint演示文稿首先简要概述Cr（VI）监管范围。介绍了还原/混凝/过滤（RCF）去除六价铬的示范试验，以及残留物管理和分析。研究结果表明:硫酸亚铁将Cr（VI）浓度从100微克/升降低到100微克/升 15分钟内低于1微克/升； 曝气有效地氧化了大部分亚铁，甚至 6分钟的曝气将亚铁浓度降低到低于 0.08毫克/升； 在没有曝气的情况下运行，会产生过滤废水 铁浓度低于0.03 mg/L； 阴离子聚合物对絮体的形成和反冲洗是有效的 水沉降； 污泥脱水的被动过滤在这方面很有前景 应用和 反冲洗水循环不会对循环流化床产生负面影响 过程包括表格、数字。

This powerpoint presentation begins by providing a brief overview of the Cr(VI) regulatory horizon. Demonstration testing of reduction/coagulation/filtration (RCF) for hexavalent chromium removal is presented, along with residuals management and analysis. Study results indicate: ferrous sulfate reduced Cr(VI) concentrations from 100 ug/L to less than 1 ug/L within 15 minutes; aeration effectively oxidized the majority of the ferrous iron, even 6 minutes of aeration lowered ferrous concentrations to less than 0.08 mg/L; runs conducted without aeration resulted in filter effluent ferrous iron concentrations of less than 0.03 mg/L; anionic polymer was effective in floc formation and backwash water settling; passive filtration for sludge dewatering is promising for this application; and, backwash water recycle did not negatively impact the RCF process. Includes tables, figures.