Removal of organic substances and oxidation of ammonium nitrogen by a down-flow hanging sponge (DHS) reactor under high salinity conditions

被引：40

作者：

Uemura, Shigeki ^{[1
]}

Suzuki, Saori ^{[2
]}

Abe, Kenichi ^{[3
]}

Kubota, Keiichi ^{[3
]}

Yamaguchi, Takashi ^{[3
]}

Ohashi, Akiyoshi ^{[4
]}

Takemura, Yasuyuki ^{[5
]}

Harada, Hideki ^{[5
]}

机构：

[1] Kisarazu Natl Coll Technol, Dept Civil Engn, Chiba 2920041, Japan

[2] Nippon Steel Kankyo Engn Co Ltd, Chiba 2920838, Japan

[3] Nagaoka Univ Technol, Dept Environm Syst Engn, Niigata 9402188, Japan

[4] Hiroshima Univ, Dept Social & Environm Engn, Hiroshima 7398527, Japan

[5] Tohoku Univ, Dept Civil Engn, Aoba Ku, Sendai, Miyagi 9808579, Japan

来源：

BIORESOURCE TECHNOLOGY | 2010年 / 101卷 / 14期

关键词：

Down-flow hanging sponge reactor; Salinity; Phenol; Ammonium nitrogen; Coke-plant wastewater; SEWAGE-TREATMENT SYSTEM; COMBINATION; NITRITE; UASB;

D O I：

10.1016/j.biortech.2010.02.040

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

A down-flow hanging sponge (DHS) reactor, constructed by connecting three identical treatment units in series, was fed with highly saline artificial coke-plant wastewater containing 1400 mg L-1 of phenol in terms of chemical oxygen demand (COD) and 500 mg-N L-1 of ammonium nitrogen. The COD was removed by the 1st unit, achieving 92% removal at an average COD loading rate of 3.0 kg-COD m(-3) d(-1) for all units, with oxidation of ammonium nitrogen occurring primarily in the two downstream units. Microbial assays of the different units of the reactor revealed greater numbers of nitrifying bacteria in the 2nd and 3rd units than in the 1st unit, corresponding with the observed ammonium oxidation pattern of the reactor. These findings suggest that a succession of microflora was successfully established along the OHS. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：5180 / 5185

页数：6

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