Removal of multicomponent VOCs in off-gases from an oil refining wastewater treatment plant by a compost-based biofilter system |
| |
Authors: | Dan Wu Chunyan Zhang Changjun Geng Li Hao and Xie Quan |
| |
Institution: | (1) Chemical Engineering Laboratory, Faculty of Sciences, University of La Coru?a, Alejandro de la Sota, 1, 15071 La Coru?a, Spain;(2) Department of Chemical Engineering, Indian Institute of Technology Madras, Chennai, 600036, Tamilnadu, India |
| |
Abstract: | Waste gases from oil refining wastewater treatment plants are often characterized by the presence of multicomponent and various
concentrations of compounds. An evaluation of the performance and feasibility of removing multicomponent volatile organic
compounds (VOCs) in off-gases from oil refining wastewater treatment plants was conducted in a pilot-scale compost-based biofilter
system. This system consists of two identical biofilters packed with compost and polyethylene (PE). This paper investigates
the effects of various concentrations of nonmethane hydrocarbon (NMHC) and empty bed residence time (EBRT) on the removal
efficiency of NMHC. Based on the experimental results and practical applications, an EBRT of 66 s was applied to the biofilter
system. The removal efficiencies of NMHC were within the range of 47%–100%. At an EBRT of 66 s, the average removal efficiency
of benzene, toluene, and xylene were more than 99%, 99%, and 100%, respectively. The results demonstrated that multicomponent
VOCs in off-gases from the oil refining wastewater treatment plant could be successfully removed in the biofilter system,
which may provide useful information concerning the design criteria and operation of full-scale biofilters. |
| |
Keywords: | |
本文献已被 万方数据 SpringerLink 等数据库收录! |
|