Treatment of coke wastewater in a sequential batch reactor (SBR) at pilot plant scale |
| |
Authors: | Marañón E Vázquez I Rodríguez J Castrillón L Fernández Y López H |
| |
Institution: | Department of Chemical and Environmental Engineering, Higher Polytechnic School of Engineering, University of Oviedo, 33204 Gijón, Spain. emara@uniovi.es |
| |
Abstract: | Coke wastewater is a highly toxic industrial effluent which is usually treated by a combination of physico-chemical and biological treatments. With the aim of completing prior studies carried out in CSTR, in this work we studied the treatment of coke wastewater in a pilot plant equipped with a 400 L stripping tank, a 350 L neutralization/homogenization tank and a 6 m high 1500 L sequential batch reactor (SBR), controlled by a PLC. Ammonia stripping efficiencies of 96% were obtained for HRT of 66 h. The biological treatment in the SBR led to removal efficiencies of 85% COD, 98% thiocyanate and 99% phenols for HRT of 115 h. Final concentrations in the effluent of 1.8 mg phenols/L, 5.4 mg SCN/L, 206 mg COD/L and 78 mg N-NH(4)(+)/L were obtained. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|