Enhanced removal of nitrate using starch/PCL blends as solid carbon source in a constructed wetland

被引：99
|
作者：
Shen, Zhiqiang [1 ,2 ]
Zhou, Yuexi [1 ,2 ]
Liu, Jia [1 ,2 ,3 ]
Xiao, Yu [1 ,2 ,4 ]
Cao, Rong [3 ]
Wu, Fuping [4 ]
机构：
[1] Chinese Res Inst Environm Sci, State Key Lab Environm Criteria & Risk Assessment, Beijing 100012, Peoples R China
[2] Chinese Res Inst Environm Sci, Res Ctr Water Pollut Control Technol, Beijing 100012, Peoples R China
[3] Hebei Univ Engn, Sch Urban Construct, Handan 056038, Peoples R China
[4] Lanzhou Jiaotong Univ, Sch Environm & Municipal Engn, Lanzhou 730070, Peoples R China
来源：
BIORESOURCE TECHNOLOGY | 2015年 / 175卷
基金：
中国博士后科学基金;
关键词：
Denitrification; Solid carbon source; Starch; Constructed wetland; Microbial community; MICROBIAL PRODUCTS SMP; DENITRIFICATION PERFORMANCE; BIOLOGICAL DENITRIFICATION; BIODEGRADABLE POLYMER; ORGANICS REMOVAL; NITROGEN; EXCITATION; DIVERSITY; SUBSTRATE;
D O I：
10.1016/j.biortech.2014.10.006
中图分类号：
S2 [农业工程];
学科分类号：
0828 ;
摘要：
Cornstarch/polycaprolactone (SPCL) blends were prepared and used as external carbon source for biological denitrification in a constructed wetland. The denitrification performances, components of dissolved organic matter (DOM) and microbial diversity were investigated. The results showed that nitrate was removed mainly in the layer filled with SPCL, and the average denitrification rate was 0.069 kg/m(3) d (nitrate removal efficiency was 98.23%). The major component of DOM was polysaccharides which mainly consisted of reducing sugar. Besides, the concentrations of polysaccharides and reducing sugar decreased along the height of the constructed wetland. Therefore, the dissolved organic carbon (DOC) of effluent decreased to 6.54 mg/L. Denitrifying bacteria Bacillus (24.25%) and Thauera (9.36%) were the most abundant genera in the biofilm attached on the surface of SPCL. (C) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码：239 / 244
页数：6
相关论文
共 50 条
  • [21] Nitrate Removal in Horizontal Subsurface Constructed Wetland with Cattail Litter Addition
    Liu, Gang
    Wen, Yue
    Zhou, Qi
    2010 4TH INTERNATIONAL CONFERENCE ON BIOINFORMATICS AND BIOMEDICAL ENGINEERING (ICBBE 2010), 2010,
  • [22] Effect of shunt ratio on nitrogen removal of a constructed wetland system applied external carbon source
    Ping, La-Mei
    Wang, Ning
    Zhao, Zi-Jian
    Sui, Jia-Tong
    Pan, Ling-Yang
    Chu, Gang
    Wang, Zhen
    Zhongguo Huanjing Kexue/China Environmental Science, 2023, 43 (02): : 620 - 630
  • [23] Enhanced nitrate removal efficiency in wetland microcosms using an episediment layer for denitrification
    Fleming-Singer, MS
    Horne, AJ
    ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2002, 36 (06) : 1231 - 1237
  • [24] Enhanced nitrogen removal reliability and efficiency in integrated constructed wetland microcosms using zeolite
    Yue Wen
    Chao Xu
    Gang Liu
    Yi Chen
    Qi Zhou
    Frontiers of Environmental Science & Engineering, 2012, 6 : 140 - 147
  • [25] Enhanced nitrogen removal reliability and efficiency in integrated constructed wetland microcosms using zeolite
    Wen, Yue
    Xu, Chao
    Liu, Gang
    Chen, Yi
    Zhou, Qi
    FRONTIERS OF ENVIRONMENTAL SCIENCE & ENGINEERING, 2012, 6 (01) : 140 - 147
  • [26] The use of microalgal biomass as a carbon source for nitrate removal in horizontal subsurface flow constructed wetlands
    Zhong, Fei
    Huang, Shan
    Wu, Juan
    Cheng, Shuiping
    Deng, Zifa
    ECOLOGICAL ENGINEERING, 2019, 127 : 263 - 267
  • [27] The Effect of Adding Different Amount of Carbon Source on the Nitrogen Removal Efficiency of Subsurface Flow Constructed Wetland
    Ma Xingguan
    Zhao Qiuju
    Wang Lei
    2015 4TH INTERNATIONAL CONFERENCE ON ENERGY AND ENVIRONMENTAL PROTECTION (ICEEP 2015), 2015, : 2071 - 2077
  • [28] Nitrate removal processes in a constructed wetland treating drainage from dairy pasture
    Matheson, Fleur E.
    Sukias, James P.
    ECOLOGICAL ENGINEERING, 2010, 36 (10) : 1260 - 1265
  • [29] Preparation of a New Iron-Carbon-Loaded Constructed Wetland Substrate and Enhanced Phosphorus Removal Performance
    Zhao, Jie
    Gao, Jingqing
    Liu, Junzhao
    MATERIALS, 2020, 13 (21) : 1 - 19
  • [30] Removal of Mercury from Wastewater Using a Constructed Wetland
    Sima, Jan
    Krejsa, Jiri
    Svoboda, Lubomir
    CROATICA CHEMICA ACTA, 2015, 88 (02) : 165 - 169
12345