title: Application of novel catalytic-ceramic-filler in a coupled system for long-chain dicarboxylic acids manufacturing wastewater treatment.
abstract: 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.
authors.affiliation: School of Environmental Science and Engineering, Shanghai Jiaotong University, Shanghai 200240, PR China.
authors.forename: Suqing
authors.initials: S
authors.lastname: Wu
authors.affiliation: School of Environmental Science and Engineering, Shanghai Jiaotong University, Shanghai 200240, PR China; Shandong ATK Environmental Engineering Company Limited, Jinan 250101, PR China.
authors.forename: Yuanfeng
authors.initials: Y
authors.lastname: Qi
authors.affiliation: School of Environmental Science and Engineering, Shanghai Jiaotong University, Shanghai 200240, PR China.
authors.forename: Chunzhen
authors.initials: C
authors.lastname: Fan
authors.affiliation: School of Environmental Science and Engineering, Shanghai Jiaotong University, Shanghai 200240, PR China. Electronic address: heshengbing@sjtu.edu.cn.
authors.forename: Shengbing
authors.initials: S
authors.lastname: He
authors.affiliation: Shandong ATK Environmental Engineering Company Limited, Jinan 250101, PR China.
authors.forename: Bibo
authors.initials: B
authors.lastname: Dai
authors.affiliation: School of Environmental Science and Engineering, Shanghai Jiaotong University, Shanghai 200240, PR China.
authors.forename: Jungchen
authors.initials: J
authors.lastname: Huang
authors.affiliation: School of Environmental Science and Engineering, Shanghai Jiaotong University, Shanghai 200240, PR China.
authors.forename: Weili
authors.initials: W
authors.lastname: Zhou
authors.affiliation: School of Environmental Science and Engineering, Shanghai Jiaotong University, Shanghai 200240, PR China.
authors.forename: Lei
authors.initials: L
authors.lastname: Gao
mesh_terms: D000327:Adsorption; D001673:Biodegradation, Environmental; D057919:Biological Oxygen Demand Analysis; D002681:China; D003998:Dicarboxylic Acids / Q000737:chemistry*; D005427:Flocculation; D012722:Sewage / Q000032:analysis / Q000737:chemistry; D014865:Waste Disposal, Fluid / Q000295:instrumentation / Q000379:methods*; D062065:Wastewater / Q000032:analysis*
chemical_list: D003998:Dicarboxylic Acids; D012722:Sewage; D062065:Wastewater
keywords: Adsorption-biodegradation; Catalytic micro-electrolysis; Catalytic-ceramic-filler; Long-chain dicarboxylic acids; Systematic wastewater treatment