CAJ | 학술논문

用煤矸石制备聚合硫酸铝铁（PAFS），研究了铁铝物质的量比、体系pH、聚合时间、聚合温度对PAFS去浊性能的影响，确定了制备PAFS的优化条件：c（Al3＋＋ Fe3＋）＝0．6 mol／L ，铁铝物质的量比为10∶3，体系pH＝0．8，聚合时间7 h ，聚合温度60℃，室温下熟化24 h。用优化条件下制备的PAFS处理洗煤废水，在洗煤废水pH＝8．0、5％ PAFS用量为6 mL／800 mL洗煤废水优化条件下，洗煤废水余浊达20％以下。
용매안석제비취합류산려철（PAFS），연구료철려물질적량비、체계pH、취합시간、취합온도대PAFS거탁성능적영향，학정료제비PAFS적우화조건：c（Al3＋＋ Fe3＋）＝0．6 mol／L ，철려물질적량비위10∶3，체계pH＝0．8，취합시간7 h ，취합온도60℃，실온하숙화24 h。용우화조건하제비적PAFS처리세매폐수，재세매폐수pH＝8．0、5％ PAFS용량위6 mL／800 mL세매폐수우화조건하，세매폐수여탁체20％이하。
The preparation of polymeric aluminum ferric sulfate (PAFS ) using coal gangue and treatment of coal‐washing wastewater were researched .The influence of iron to aluminum ratio , system pH ,polymerization temperature and polymerization time on turbidity removal character of the PAFS were examined .The optimum conditions for preparation of PAFS were determined:c(Al3+ +Fe3+ )=0 .6 mol/L ,ratio of iron to aluminum is 10∶3 ,system pH=0 .8 ,polymerization temperature is 60 ℃ ,polymerization time is 7 h ,and aging time at room temperature is 24 h .Finally ,the coal‐washing wastewater is treated by the prepared PAFS under the optimum conditions ,and the proper conditions are pH of 8 .0 ,the 5% PAFS addition amount of 6 mL for 800 mL wastewater .The wastewater residual turbidity deduces to low er than 20% .