TY - JOUR
T1 - Application of novel catalytic-ceramic-filler in a coupled system for long-chain dicarboxylic acids manufacturing wastewater treatment
AU - Wu, Suqing
AU - Qi, Yuanfeng
AU - Fan, Chunzhen
AU - He, Shengbing
AU - Dai, Bibo
AU - Huang, Jungchen
AU - Zhou, Weili
AU - Gao, Lei
N1 - Funding Information:
The study was supported by Program for New Century Excellent Talents in University ( NCET-11-0320 ); The National Natural Science Foundation of China ( 51378306 ); Shanghai Jiaotong University ‘Chenxing Plan (SMC-B)’; Shandong Provincial Environmental Protection Industry Projects for Technology Research and Development ( SDHBYF-2012-12 ).
Publisher Copyright:
© 2015 Elsevier Ltd.
PY - 2016/2/1
Y1 - 2016/2/1
N2 - To gain systematic technology for long-chain dicarboxylic acids (LDCA) manufacturing wastewater treatment, catalytic micro-electrolysis (CME) coupling with adsorption-biodegradation sludge (AB) process was studied. Firstly, novel catalytic-ceramic-filler was prepared from scrap iron, clay and copper sulfate solution and packed in the CME reactor. To remove residual n-alkane and LDCA, the CME reactor was utilized for LDCA wastewater pretreatment. The results revealed that about 94% of n-alkane, 98% of LDCA and 84% of chemical oxygen demand (COD) were removed by the aerated CME reactor at the optimum hydraulic retention time (HRT) of 3.0 h. In this process, catalysis from Cu and montmorillonites played an important role in improving the contaminants removal. Secondly, to remove residual COD in the wastewater, AB process was designed for the secondary biological treatment, about 90% of the influent COD could be removed by biosorption, bio-flocculation and biodegradation effects. Finally, the effluent COD (about 150 mg L-1) discharged from the coupled CME-AB system met the requirement of the national discharged standard (COD ≤ 300 mg L-1). All of these results suggest that the coupled CME-AB system is a promising technology due to its high-efficient performance, and has the potential to be applied for the real LDCA wastewater treatment.
AB - To gain systematic technology for long-chain dicarboxylic acids (LDCA) manufacturing wastewater treatment, catalytic micro-electrolysis (CME) coupling with adsorption-biodegradation sludge (AB) process was studied. Firstly, novel catalytic-ceramic-filler was prepared from scrap iron, clay and copper sulfate solution and packed in the CME reactor. To remove residual n-alkane and LDCA, the CME reactor was utilized for LDCA wastewater pretreatment. The results revealed that about 94% of n-alkane, 98% of LDCA and 84% of chemical oxygen demand (COD) were removed by the aerated CME reactor at the optimum hydraulic retention time (HRT) of 3.0 h. In this process, catalysis from Cu and montmorillonites played an important role in improving the contaminants removal. Secondly, to remove residual COD in the wastewater, AB process was designed for the secondary biological treatment, about 90% of the influent COD could be removed by biosorption, bio-flocculation and biodegradation effects. Finally, the effluent COD (about 150 mg L-1) discharged from the coupled CME-AB system met the requirement of the national discharged standard (COD ≤ 300 mg L-1). All of these results suggest that the coupled CME-AB system is a promising technology due to its high-efficient performance, and has the potential to be applied for the real LDCA wastewater treatment.
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U2 - 10.1016/j.chemosphere.2015.11.024
DO - 10.1016/j.chemosphere.2015.11.024
M3 - Article
C2 - 26619310
AN - SCOPUS:84953791619
SN - 0045-6535
VL - 144
SP - 2454
EP - 2461
JO - Chemosphere
JF - Chemosphere
ER -