作　　者： ; ; ; (尹立新）; (李慧莉）;

机构地区： 韩山师范学院

出　　处： 《环境工程学报》 2014年第6期2386-2392,共7页

摘　　要： 以色度、浊度、悬浮物浓度、电导率及金属离子浓度为检测指标,研究进水pH、混凝剂种类与投量、沉降时间及重金属捕捉剂对陶瓷电镀废水的处理效果,探讨陶瓷电镀废水处理的适宜操作条件及工艺组合。实验表明,陶瓷电镀废水的组合处理工艺:调整废水pH为一级处理,投加PAC的混凝沉降法为二级处理,投加重金属捕捉剂为三级处理;先调节废水pH至9,投加50 mg/L的PAC,再投加20 mg/L重金属捕捉剂,此时废水的色度降至10倍,浊度降至16 NTU,悬浮物浓度降至210 mg/L去除率达到95.1%,各金属离子浓度也明显降低,处理出水的悬浮物达到《污水综合排放标准》(GB8978-1996)的三级标准,其他各指标均达到《电镀污染物排放标准》(GB21900-2008)。 Chromaticity and turbidity,suspended solid concentration,conductivity and metal ion concentration act as tested indexes,and the effects of influent pH,type of coagulant and dosage,settling time and heavy metal capturing agent on the ceramics electroplating wastewater treatment were studied,so the suitable operating conditions and combination of technology on ceramic electroplating wastewater were explored. The experiments show the combination of ceramic electroplating wastewater treatment technology. Adjusting wastewater pH acted as primary treatment,coagulation and sedimentation method of dosing PAC acted as secondary treatment, and casting heavier metal capture agent acted as a tertiary treatment. The wastewater pH was adjusted to 9 first, 50 mg/L of PAC was added,then,20 mg/L of the heavier metal capture agent was added,the colority of wastewater fell to 10 times,turbidity fell to 16 NTU,suspended solids concentrations was down to 210 mg/L, and its removal rate reached 95. 1%. The metal ion concentration was significantly reduced,the effluent suspended solids met Standard of Sewage Comprehensive Discharge(GB8978-1996) Standard of level Ⅲ,other indexes met the Electroplating Pollutants Discharge Standard(GB21900-2008).

关 键 词： 陶瓷电镀废水 混凝沉降 重金属捕捉剂

领　　域： [环境科学与工程]