Electrocoagulation treatment of peat bog drainage water containing humic substances.
V Kuokkanen, T Kuokkanen, J Rämö, U Lassi
文献索引:Water Res. 79 , 79-87, (2015)
全文:HTML全文
摘要
Electrocoagulation (EC) treatment of 100 mg/L synthetic wastewater (SWW) containing humic acids was optimized (achieving 90% CODMn and 80% DOC removal efficiencies), after which real peat bog drainage waters (PBDWs) from three northern Finnish peat bogs were also treated. High pollutant removal efficiencies were achieved: Ptot, TS, and color could be removed completely, while Ntot, CODMn, and DOC/TOC removal efficiencies were in the range of 33-41%, 75-90%, and 62-75%, respectively. Al and Fe performed similarly as the anode material. Large scale experiments (1 m(3)) using cold (T = 10-11 °C) PBDWs were also conducted successfully, with optimal treatment times of 60-120 min (applying current densities of 60-75 A/m(2)). Residual values of Al and Fe (complete removal) were lower than their initial values in the EC-treated PBDWs. Electricity consumption and operational costs in optimum conditions were found to be low and similar for all the waters studied: 0.94 kWh/m(3) and 0.15 €/m(3) for SWW and 0.35-0.70 kWh/m(3) and 0.06-0.12 €/m(3) for the PBDWs (large-scale). Thus, e.g. solar cells could be considered as a power source for this EC application. In conclusion, EC treatment of PBDW containing humic substances was shown to be feasible. Copyright © 2015 Elsevier Ltd. All rights reserved.
相关化合物
相关文献:
2015-07-01
[Environ. Toxicol. Chem. 34 , 1588-96, (2015)]
Hygroscopic growth and water uptake kinetics of two-phase aerosol particles consisting of ammonium sulfate, adipic and humic acid mixtures. Sjogren S, et al.
[J. Aerosol Sci. 38(2) , 151-71, (2007)]
Phase transitions and hygroscopic growth of aerosol particles containing humic acid and mixtures of humic acid and ammonium sulphate. Badger CL, et al.
[Atmos. Chem. Phys. 6(3) , 755-68, (2006)]
Adsorption of heavy metal ions onto insolubilized humic acid. Seki H and Suzuki A.
[J. Colloid. Interface Sci. 171(2) , 490-4, (1995)]