Fe微电解法预处理含铜电镀废水的分析.docx

优秀毕业论文 精品参考文献资料 青岛科技大学研究生学位论文 Fe／C微电解法预处理含铜电镀废水的研究 摘要 电镀行业废水水质较复杂，通常含有大量的重金属和螯合物，对人类健康 和环境产生严重威胁。根据青岛某电子有限公司的电镀废水中含有大量Cu2+和 有机物的特点，本实验采用Fe／C微电解．絮凝法、Fe／C微电解．Fenton．絮凝法及 Fe／C微电解．纳米Ti02光催化．絮凝法三种方法处理此电镀废水并对处理结果进 行了比较。 实验结果表明：利用Fe／C微电解．絮凝法时，在初始pH值--4、Fe／C(质 量)=2／1、Fe投加量=609／L、反应时间=60rain时，絮凝出水Cu2+含量由641．78mg／L 降至0．32mg／L，还原率高达99．95％，同时CODc，去除率23．57％。利用Fe／C微 电解．Fenton．絮凝法时，当微电解pH值=3、Fe／C(质量)=1／2、Fe加入量=609／L、 微电解时间=60rain、FentonpH值=6、C(30％m02、=1 2ml／L、絮凝pH值=9．5时， Cu2+还原率为96．24％，CODcr去除率提高至55．20％。利用Fe／C微电解一纳米Ti02 光催化．絮凝法时，Fe／C微电解初始pH值为3、Fe／C质量比为l／1、Fe投加量 为60∥L，反应时间为60min；光催化pH值为3，Ti02加入量为40ml／L，紫外 光照时间60rain，Cu2+去除率达到99．98％，CODCr去除率提高至60％。经过三 种方法的处理，出水Cu2+含量达到山东省半岛流域水污染物综合排放I级标准， CODc，去除率最高可达到60％，为后续的的处理创造了条件。 关键词：Fe／C微电解含铜电镀废水Fenton试剂纳米Ti02  青岛科技大学研究生学位论文 PRETREATMENT OF ELECTRoPLATING WASTEⅥ陷汀ER CoNTAINING COPPER IONS BY Fe／C MICRo ELECTRoLYSIS PROCESS ABSTRACT The component of electroplating wastewater containing a lot of heavy metals and chelates is complex，and causes serious harm to the health of human beings and the environment．According to the characteristics of electroplating wastewater containing hi曲concentration of copper ions and organic matter from an electronic company in Qingdao，iron—carbon micro electrolysis—flocculating，iron-carbon micro electrolysis-Fenton—flocculating and iron-carbon micro electrolysis-nanometer titanium—photocatalysis-flocculating were applied in the pretreatment of wastewater． The experiments results indicated that the concentration of copper ions in electroplating wastewater decreases from 641．78mg／L to 0．32mg／L and the removal efficiency achieves 99．95％when initial pH value 4，Fe／C(quality)2／1，the dosage of Fe 60∥L and the reaction time 60rain by iron—carbon micro electrolysis -flocculating．Pretreatment accomplished 96．24％ of copper ions removal and improved 55．20％of CODcr removal when pH value of micro electrolysis 4，Fe／C (mass)1 12，the dosage of iron 60lg／L，reaction time 60min，pH value of Fenton 6，the dosage of 30％H202 1 2ml／L an