混凝-絮凝沉淀处理石墨烯废水工艺研究在实验教学中的设计与探索

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Design and Exploration of Study on the Treatment of Graphene Wastewater by Coagulation-Flocculation Precipitation in Experimental Teaching

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表3 上清液金属离子残留情况

组别 处理方式 钙离子含量/(mg∙L−1) 铝离子含量/(mg∙L−1) 铁离子含量/(mg∙L−1) M-1 Ca(OH)2 473.2 N.D. * N.D. M-2 Ca(OH)2 + PAC 468.2 0.51 N.D. M-3 Ca(OH)2 + CPAM 445.4 0.17 N.D. M-4 Ca(OH)2 + PAC + CPAM 447.9 0.005 N.D. M-5 NaOH + Ca(OH)2 294.4 0.66 N.D. M-6 NaOH + Ca(OH)2 + PAC 260.9 0.46 N.D. M-7 NaOH + Ca(OH)2 + PAM 287.2 0.08 N.D. M-8 NaOH + Ca(OH)2 + PAC + PAM 265.1 N.D. N.D.