摘要
以福建某电镀厂镀镍废水为研究对象,采用Fenton耦合铁碳微电解技术对其进行处理,考察了铁投加量、铁碳质量比、初始pH值及H_(2)O_(2)投加量对COD_(Cr)去除率的影响,通过响应面法优化工艺条件,建立二次多项式预测模型,分析各因素间的交互作用,并检验模型的准确性。结果表明,各因素对COD_(Cr)去除率的影响显著性排序为:初始pH值>H_(2)O_(2)投加量>铁碳质量比>铁投加量;当铁投加量为40 g·L^(-1)、铁碳质量比为0.8、初始pH值为4.0、H_(2)O_(2)投加量为30 mmol·L^(-1)时,COD_(Cr)去除率为78.2%,与预测值(78.9%)基本吻合,说明采用响应面法优化得到的工艺条件准确可靠。
Taking nickel plating wastewater from an electroplating plant in Fujian as a research object,we treated it by Fenton-coupled iron-carbon micro-electrolysis technology,and investigated the effects of iron dosage,iron-carbon mass ratio,initial pH value,and H_(2)O_(2)dosage on COD_(Cr) removal rate.Moreover,we optimized the process conditions by response surface methodologies,and established a quadratic polynomial prediction model to analyze the interaction among various factors.Meanwhile,we tested the accuracy of the model.The results show that the order of significance of each factor on the COD_(Cr) removal rate is as follows:initial pH value>H_(2)O_(2)dosage>iron-carbon mass ratio>iron dosage.When the iron dosage is 40 g·L^(-1),the iron-carbon mass ratio is 0.8,the initial pH value is 4.0,and the H_(2)O_(2)dosage is 30 mmol·L^(-1),the COD_(Cr) removal rate reaches 78.2%,which is basically consistent with the predicted value(78.9%).It is shown that the process conditions optimized by response surface methodologies are accurate and reliable.
作者
赵瑾
姜天翔
王勋亮
成玉
曹军瑞
ZHAO Jin;JIANG Tianxiang;WANG Xunliang;CHENG Yu;CAO Junrui(Tianjin Institute of Seawater Desalination and Comprehensive Utilization,Ministry of Natural Resources,Tianjin 300192,China)
出处
《化学与生物工程》
CAS
北大核心
2024年第1期63-68,共6页
Chemistry & Bioengineering
基金
中央级公益性科研院所基本科研业务费专项资金项目(K-JBYWF-2021-QR07)。
关键词
FENTON
铁碳微电解
响应面法
电镀废水
Fenton
iron-carbon micro-electrolysis
response surface methodology
electroplating wastewater
