Performance optimization of two-stage constructed wetland-microbial fuel cell system for the treatment of high-concentration wastewater
In: Environmental science and pollution research: ESPR, Band 30, Heft 23, S. 63620-63630
ISSN: 1614-7499
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In: Environmental science and pollution research: ESPR, Band 30, Heft 23, S. 63620-63630
ISSN: 1614-7499
In: Water and environment journal, Band 35, Heft 3, S. 902-912
ISSN: 1747-6593
AbstractIn order to promote the decomposition of pollutants, potassium peroxodisulphate (PDS) has been added to a gas‐liquid dielectric barrier discharge (DBD) reactor with rod plate configuration for processing tetracycline (TC) wastewater. The effects of applied voltage, PDS dose, discharge gap, initial pH and TC concentration are discussed. The results show that the addition of PDS can significantly improve the removal efficiency of TC, the kinetic constant and the energy utilization of DBD. Compared with DBD treatment alone, the removal efficiency of TC (80 mg/L) can be increased by 45.5% after adding 0.6 g/L PDS. The TC removal efficiency increases with the increase of applied voltage and the decrease of TC concentration and discharge gap. The PDS dose has an optimal value. Weakly alkaline conditions are conducive to the removal of TC. Inorganic ions (Cl− and
) have a significant effect on removing TC. The overall findings suggest an effective method to remove organic pollutants in wastewater.