Treatment of 3,4,5-trimethoxybenzaldehyde and Di-bromo-aldehyde manufacturing wastewater by the coupled Fenton pretreatment and UASB reactor with emphasis on optimization and chemicals analysis

被引：14

作者：

Li, Wei Cheng ^{[1
,2
]}

Chen, Hong ^{[1
,3
]}

Jin, Yong ^{[4
]}

Zhang, Hong ^{[1
]}

Niu, Qigui ^{[2
]}

Qi, Weikang ^{[2
]}

Zhang, Yanlong ^{[2
]}

Li, Yu-You ^{[2
]}

Gao, Yingxin ^{[1
]}

机构：

[1] Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Environm Aquat Chem, Beijing 100085, Peoples R China

[2] Tohoku Univ, Grad Sch Engn, Dept Civil & Environm Engn, Aoba Ku, Sendai, Miyagi 9808579, Japan

[3] Changsha Univ Sci & Technol, Sch Hydraul Engn, Changsha 410004, Hunan, Peoples R China

[4] Henan Univ, Inst Image Proc & Pattern Recognit, Kaifeng 475001, Peoples R China

来源：

SEPARATION AND PURIFICATION TECHNOLOGY | 2015年 / 142卷

基金：

中国国家自然科学基金; 日本学术振兴会;

关键词：

3,4,5-Trimethoxybenzaldehyde and Di-bromo-aldehyde manufacturing wastewater; Fenton; Convex optimization method; GC-MS; FT-IR; UASB; P-CHLOROPHENOL; OXIDATION; DEGRADATION; PEROXIDATION; EFFICIENT; KINETICS; REMOVAL;

D O I：

10.1016/j.seppur.2014.12.013

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

An integrated Fenton-UASB was investigated for the treatment of 3,4,5-trimethoxybenzaldehyde (TMBA) and Di-bromo-aldehyde manufacturing wastewater. A quadratic model for describing the individual and interactive effects of three variables independent variables (pH, concentration of H2O2 and H2O2/Fe2+) affecting COD abatement in Fenton pretreatment was successfully developed by the response surface methodology. The model proposed was further interfaced with the convex optimization method to optimize the variables in that convex optimization method can guarantee global optimization. A substantial increase in the BOD5/COD ratio of the Fenton treated wastewater was observed, allowing sequent biological treatment feasible. The UASB reactor receiving treated effluent was operated continuously with an organic loading rate (OLR) from initial 3.0 g to 24.0 g COD/L/d with a stepwise reduction in hydraulic retention time (HRT) for 160 days. The degradation of organics in Fenton pretreatment and the anaerobic process was further revealed through GC-MS and FT-IR, respectively. The experimental results highlighted that the potential of integrated Fenton-UASB, providing 80.4% COD removal efficiency accompanied with 96.8% and 100% of TMBA and Di-bromo-aldehyde removal efficiency, respectively even when the applied OLR was up to 16.0 g COD/L/d. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：40 / 47

页数：8