Pilot Study on Advanced Treatment of Wastewater Produced by Pressurized Coarse Coal Gasification

DOI

10.2991/icaees-15.2015.174How to use a DOI?

Keywords

wastewater treatment, pressurized coarse coal gasification, advanced treatment, ozonation, pilot scale

Abstract

A Pilot study on advanced treatment of wastewater produced by pressurized coarse coal gasification was done in a coal chemical plant. The feasibility of catalytic ozonation, UV/O3, and Fenton process in the advanced treatment of wastewater produced by pressurized coarse coal gasification process was studied and catalytic ozonation was proved to be a good choice with high COD removal (55%). Furthermore, a two-stage advanced treatment process combined with advanced oxidation processes (AOPs) and biological aerated filter (BAF) was proposed to meet the requirement of ultrafiltration-reverse osmosis (UF-RO) wastewater reuse system. It was found that catalytic ozonation showed the advantage in the first stage oxidation while UV/O3 process showed the advantage in the second stage oxidation. Ultimately, we developed the interesting catalytic ozonation-BAF-UV/O3-BAF process and the effluent met the UF-RO requirement of COD<50 mg/L, which opened a new and efficient channel for pressurized coarse coal gasification wastewater treatment.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

Download article (PDF)

TY  - CONF
AU  - Jingzhi Zhang
AU  - Linlin Xing
AU  - Jiane Zuo
AU  - Anping Jiang
AU  - Kai Wang
PY  - 2015/07
DA  - 2015/07
TI  - Pilot Study on Advanced Treatment of Wastewater Produced by Pressurized Coarse Coal Gasification
BT  - Proceedings of the 3rd International Conference on Advances in Energy and Environmental Science 2015
PB  - Atlantis Press
SP  - 940
EP  - 945
SN  - 2352-5401
UR  - https://doi.org/10.2991/icaees-15.2015.174
DO  - 10.2991/icaees-15.2015.174
ID  - Zhang2015/07
ER  -