TY - JOUR
T1 - Improvement of anaerobic biological treatment effect by catalytic micro-electrolysis for monensin production wastewater
AU - Wu, Suqing
AU - Qi, Yuanfeng
AU - Fan, Chunzhen
AU - Dai, Bibo
AU - Huang, Jungchen
AU - Zhou, Weili
AU - He, Shengbing
AU - Gao, Lei
N1 - Funding Information:
The study was supported by the Science and technology project of Zhejiang Province (No. 2015F50059); The National Natural Science Foundation of China (No. 51378306 and No. 51478262 ); Shanghai Jiaotong University ‘Chenxing Plan (SMC-B)’; Shandong provincial environmental protection industry projects for technology research and development (No. SDHBYF-2012-12).
Publisher Copyright:
© 2016 Elsevier B.V.
PY - 2016/7/15
Y1 - 2016/7/15
N2 - Monensin discharged with the animal wastes and wastewater can cause harmful effect to the environment and human health. In this study, catalytic micro-electrolysis (CME) reactor filled with novel catalytic-ceramic-filler was utilized as pretreatment to improve the anaerobic biological treatment effect for the real monensin wastewater. The CME reactor as a possible pretreatment process had satisfactory effect, with 98.44% of monensin residue and 37.07% of chemical oxygen demand (COD) removals at the optimum hydraulic retention time (HRT) of 3.0 h and dissolved oxygen (DO) of about 1.5 mg L-1. Subsequently, as the secondary biological treatment, the Up-FLOW Anaerobic Sludge Blanket (UASB) reactor treatment effect was greatly improved by the CME pretreatment, with approximately 80% of COD removal at the optimum organic loading rate (OLR) of 3.5 kg m-3 d-1, which had higher methane yield (about 0.33 m3 kg-1 COD-1) and lower volatile fatty acids (VFA) concentration (about 300 mg L-1) than that of the UASB reactor without pretreatment. Finally, an activated sludge (AS) reactor was utilized as the last biological treatment and the coupled CME-UASB-AS system had high COD and chroma removal (about 98% and 95%, respectively), the final effluent (COD and chroma of about 200 mg L-1 and 40, respectively) with no residual monensin met the national discharged standard, which provided a reliable system for the practical monensin production wastewater treatment.
AB - Monensin discharged with the animal wastes and wastewater can cause harmful effect to the environment and human health. In this study, catalytic micro-electrolysis (CME) reactor filled with novel catalytic-ceramic-filler was utilized as pretreatment to improve the anaerobic biological treatment effect for the real monensin wastewater. The CME reactor as a possible pretreatment process had satisfactory effect, with 98.44% of monensin residue and 37.07% of chemical oxygen demand (COD) removals at the optimum hydraulic retention time (HRT) of 3.0 h and dissolved oxygen (DO) of about 1.5 mg L-1. Subsequently, as the secondary biological treatment, the Up-FLOW Anaerobic Sludge Blanket (UASB) reactor treatment effect was greatly improved by the CME pretreatment, with approximately 80% of COD removal at the optimum organic loading rate (OLR) of 3.5 kg m-3 d-1, which had higher methane yield (about 0.33 m3 kg-1 COD-1) and lower volatile fatty acids (VFA) concentration (about 300 mg L-1) than that of the UASB reactor without pretreatment. Finally, an activated sludge (AS) reactor was utilized as the last biological treatment and the coupled CME-UASB-AS system had high COD and chroma removal (about 98% and 95%, respectively), the final effluent (COD and chroma of about 200 mg L-1 and 40, respectively) with no residual monensin met the national discharged standard, which provided a reliable system for the practical monensin production wastewater treatment.
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U2 - 10.1016/j.cej.2016.03.140
DO - 10.1016/j.cej.2016.03.140
M3 - Article
AN - SCOPUS:84962150397
SN - 1385-8947
VL - 296
SP - 260
EP - 267
JO - Chemical Engineering Journal
JF - Chemical Engineering Journal
ER -