Open AccessStudy on the Wet Oxidation of an Industrial High Concentration Caprolactam Organic Wastewater
Author(s) -
Pengfei Guo,
Li Wang,
Xu Zeng,
Guodong Yao,
Yangyuan Zhou,
Jianfu Zhao
Publication year - 2019
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/384/1/012045
Subject(s) - caprolactam , wet oxidation , wastewater , dilution , chemistry , biodegradation , oxygen , industrial wastewater treatment , limiting oxygen concentration , pulp and paper industry , environmental chemistry , environmental engineering , environmental science , organic chemistry , physics , engineering , thermodynamics
In this study, wet oxidation of an industrial high concentration caprolactam organic wastewater using oxygen gas as an oxidant was investigated. Different experiments were conducted to discuss the effects of the reaction temperature, time, the initial oxygen pressure and dilution ration of raw wastewater, using a batch reactor with COD removal rate as a standard for assessing. Results show that the highest removal rate of COD, 76.6%, was obtained at 250 °C for 30 min with the oxygen pressure 1.7 MPa and dilution ration 10. The biodegradability of the wastewater improved greatly after the wet oxidation process. These results illustrated that wet oxidation with oxygen gas as an oxidant displayed effectively for the pretreatment of high concentration caprolactam organic wastewater.