【摘要】：以含鐵裝飾原紙生產(chǎn)廢水污泥為原料,NaClO3為氧化劑,經(jīng)過酸溶和氧化過程,制得了液體聚合硫酸鐵(PFS)絮凝劑。研究了酸溶過程中反應(yīng)溫度及時間對鐵溶出率的影響。以Fe2+含量表征PFS質(zhì)量,考察了NaClO3用量、氧化時間和溫度對PFS質(zhì)量的影響。研究結(jié)果表明,酸溶過程中適宜的反應(yīng)條件為反應(yīng)5 h,反應(yīng)溫度80~90℃;NaClO3氧化制備PFS的適宜條件為:n(NaClO3)∶n(Fe2+)=0.18∶1,反應(yīng)時間3 h。制得的PFS各項指標均符合GB14591—2006中規(guī)定的PFS一級標準要求,PFS對造紙廢水的絮凝效果優(yōu)于市售PFS和PAC,適宜用量為30~45 mg/L;對制藥廢水的絮凝效果與市售PFS無顯著差別,適宜用量為20~30 mg/L。
[Abstract]:Liquid polymerized ferric sulfate (PFS) flocculant was prepared by acid dissolution and oxidation of wastewater sludge from decorative paper with iron as raw material and NaClO3 as oxidant. The effect of reaction temperature and time on iron dissolution rate during acid dissolution was studied. The mass of PFS was characterized by Fe2 content. The effects of NaClO3 dosage, oxidation time and temperature on the quality of PFS were investigated. The results showed that the optimum reaction conditions were 5 h, 80 鈩，

本文編號：2451271