Open AccessWet Oxidation Treatment of Waste Activated Sludge of a Pharmaceutical Factory
Author(s) -
Pengfei Guo,
Xu Zeng,
Guodong Yao,
Yangyuan Zhou,
Jianfu Zhao
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/735/1/012068
Subject(s) - waste management , activated sludge , hazardous waste , chemical oxygen demand , mixed liquor suspended solids , environmental science , wet oxidation , oxidation process , chemistry , pulp and paper industry , sewage treatment , wastewater , engineering
As the development of pharmaceutical industry, large amounts of sludge was produced, which is a hazardous waste with high environmental risks and high disposal fees. In this study, the wet oxidation treatment of pharmaceutical sludge was investigated. The effects of the reaction parameters on the process performance were discussed, such as reaction time, temperature, initial oxygen supply and catalysts. The results illustrated that the highest removal rate of volatile suspended solids (VSS) and the total chemical oxygen demand (COD) removal rates could reach up to 60.7% and 91.3% separately under 260°C with initial oxygen pressure 1.0 MPa and the reaction time 60 min. Thus, the wet oxidation process provides an economical and feasible alternative for the industrial activated sludge treatment, especially for the pharmaceutical sludge.