Simultaneous removal of COD, thiocyanate, cyanide and nitrogen from coal process wastewater using fluidized biofilm process

被引：38
作者：
Jeong, YS
Chung, JS [1 ]
机构：
[1] Pohang Univ Sci & Technol, Sch Environm Sci & Engn, Pohang, South Korea
[2] Pohang Univ Sci & Technol, Dept Chem Engn, Pohang, South Korea
来源：
PROCESS BIOCHEMISTRY | 2006年 / 41卷 / 05期
关键词：
biofilm; coal process wastewater; cyanide; fluidized-carriers; nitrogen removal; thiocyanate;
D O I：
10.1016/j.procbio.2005.12.010
中图分类号：
Q5 [生物化学]; Q7 [分子生物学];
学科分类号：
071010 ; 081704 ;
摘要：
Simultaneous removal of chemical oxygen demand (COD), thiocyanate (SCN), cyanide (CN), ammonia (NH4+-N) and total nitrogen (TN) from coal process wastewater was investigated using fluidized biofilm process at a laboratory scale and commercial scale. In the laboratory scale tests, the removal efficiencies of COD, SCN, CN, ammonia and TN were 97, 99, 99, 99 and 93%, respectively, at 1.0 day of hydraulic retention time (HRT) and 3.4 kg m(-3) day(-1) of COD loading. A commercial wastewater treatment plant with 3.4 day of HRT was revised to the fluidized biofilm process with anoxic-oxic-anoxic-oxic (AOAO) reactors arrangement. The results in the revised commercial plant were similar to those in the laboratory test. (c) 2005 Elsevier Ltd. All rights reserved.
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页码：1141 / 1147
页数：7
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