TY - JOUR
T1 - Bathroom wastewater treatment in constructed wetlands with planting, non-planting and aeration, non-aeration conditions
AU - Hyun, Kyounghak
AU - Choi, Joungjoo
AU - Ki, Dongwon
AU - Park, Joonhong
AU - Ahn, Soojeung
AU - Oh, Hyunje
AU - Choung, Youn Kyoo
N1 - Publisher Copyright:
© 2015 Balaban Desalination Publications. All rights reserved.
Copyright:
Copyright 2016 Elsevier B.V., All rights reserved.
PY - 2016/1/8
Y1 - 2016/1/8
N2 - This study aims to examine the treatment of graywater (GW), especially bathroom wastewater, using subsurface-flow constructed wetlands (CWs) in an apartment complex. It analyzed the removal of organic matters and nitrogen, the status of a wetland by depth, and microbial communities under the conditions of aeration and non-aeration at the inlet section, and planting and non-planting. The results of this study show that aeration at the inlet section and planting affect ORP, (Formula presented.) , and nitrogen by water flowing distance and water depth in a wetland. The result of CODcr removal seems to satisfy the Korean standard (below 20 mg/L (CODmn)) of reuse water quality in all three operational conditions. The aeration at the inlet section has the advantages of effectively removing organic matters at the inlet section, thus preventing its clogging, and removing nitrogen through the nitrification. Aeration at the inlet section and planting are expected to have a positive effect on the wetland status and GW treatment. Therefore, aeration at the inlet and planting will be helpful to construct and operate an artificial wetland in residential areas such as a multi-family housing complex. Ammonia-oxidizing bacteria including Nitrosomonas, Nitrosospira, Nitrosococcus and denitrifying or nitrate-reducing bacteria such as Thiobacillus, Achromobacter, Pseudomonas, Micrococcus belong to the classes of β-proteobacteria, γ-proteobacteria, and Actinobacteria. These microbial communities found in this study seem to contribute to nitrogen removal. But, the roles of microbial community in CWs need to be further investigated, both qualitatively and quantitatively.
AB - This study aims to examine the treatment of graywater (GW), especially bathroom wastewater, using subsurface-flow constructed wetlands (CWs) in an apartment complex. It analyzed the removal of organic matters and nitrogen, the status of a wetland by depth, and microbial communities under the conditions of aeration and non-aeration at the inlet section, and planting and non-planting. The results of this study show that aeration at the inlet section and planting affect ORP, (Formula presented.) , and nitrogen by water flowing distance and water depth in a wetland. The result of CODcr removal seems to satisfy the Korean standard (below 20 mg/L (CODmn)) of reuse water quality in all three operational conditions. The aeration at the inlet section has the advantages of effectively removing organic matters at the inlet section, thus preventing its clogging, and removing nitrogen through the nitrification. Aeration at the inlet section and planting are expected to have a positive effect on the wetland status and GW treatment. Therefore, aeration at the inlet and planting will be helpful to construct and operate an artificial wetland in residential areas such as a multi-family housing complex. Ammonia-oxidizing bacteria including Nitrosomonas, Nitrosospira, Nitrosococcus and denitrifying or nitrate-reducing bacteria such as Thiobacillus, Achromobacter, Pseudomonas, Micrococcus belong to the classes of β-proteobacteria, γ-proteobacteria, and Actinobacteria. These microbial communities found in this study seem to contribute to nitrogen removal. But, the roles of microbial community in CWs need to be further investigated, both qualitatively and quantitatively.
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U2 - 10.1080/19443994.2014.997991
DO - 10.1080/19443994.2014.997991
M3 - Article
AN - SCOPUS:84952298628
VL - 57
SP - 709
EP - 717
JO - Desalination and Water Treatment
JF - Desalination and Water Treatment
SN - 1944-3994
IS - 2
ER -