期刊
DESALINATION AND WATER TREATMENT
卷 52, 期 37-39, 页码 6894-6903出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/19443994.2013.823353
关键词
Pre-denitrification system; Nitrification; Moving bed biofilm reactor; Recycle ratio; Coal gasification wastewater
资金
- National High Technology Research Development Plan (863) of China [2007AA06A411]
A lab-scale sequential anoxic moving bed biofilm reactor (ANMBBR) and aerobic moving bed biofilm reactor (AEMBBR) for pre-denitrification system were used to treat real coal gasification wastewater. Removal efficiencies of COD, phenols, thiocyanate (SCN-), ammonium ( [GRAPHICS] -N), and total nitrogen (TN) were investigated at different recycle ratios, and then NaHCO3 was added into the inlet of the AEMBBR to promote nitrification. Maximal removal efficiencies of COD, phenols, and SCN- were 84.2, 88, and 99.9% at a recycle ratio of 3.0, respectively. [GRAPHICS] -N and TN removal efficiencies could achieve 97.4 and 78.2% with the addition of NaHCO3 (3 g NaHCO3 per day). Concentrations of [GRAPHICS] -N and [GRAPHICS] -N were always below 0.2 mg/L in the effluent of the ANMBBR. [GRAPHICS] -N accumulation could be observed in the effluent of the AEMBBR after adding NaHCO3.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据