Study of the spatial and temporal distribution of accumulated solids in an experimental vertical-flow constructed wetland system

2018 ◽  
Vol 628-629 ◽  
pp. 509-516 ◽  
Author(s):  
Mengyao Yang ◽  
Mingzhi Lu ◽  
Lianxi Sheng ◽  
Haitao Wu
Keyword(s):  
Constructed Wetland ◽  
Temporal Distribution ◽  
Spatial And Temporal Distribution ◽  
Vertical Flow ◽  
Vertical Flow Constructed Wetland ◽  
Wetland System

scholarly journals TREATMENT OF SEPTIC TANK SLUDGE IN A VERTICAL FLOW CONSTRUCTED WETLAND SYSTEM

2017 ◽  
Vol 37 (4) ◽  
pp. 811-819 ◽  
Author(s):  
Cynthia F. Andrade ◽  
Marcos Von Sperling ◽  
Elias S. Manjate
Keyword(s):  
Constructed Wetland ◽  
Septic Tank ◽  
Vertical Flow ◽  
Vertical Flow Constructed Wetland ◽  
Wetland System

Removal of indicator bacteria from municipal wastewater in an experimental two-stage vertical flow constructed wetland system

2003 ◽  
Vol 48 (5) ◽  
pp. 35-41 ◽  
Author(s):  
C.A. Arias ◽  
A. Cabello ◽  
H. Brix ◽  
N.-H. Johansen
Keyword(s):  
Constructed Wetland ◽  
Rate Constants ◽  
Indicator Bacteria ◽  
Vertical Flow ◽  
Faecal Coliforms ◽  
Total Coliforms ◽  
Sedimentation Tank ◽  
Vertical Flow Constructed Wetland ◽  
Wetland System ◽  
Faecal Streptococci

The removal of sanitary indicator bacteria (total coliforms, faecal coliforms, and faecal streptococci) was studied in an experimental constructed wetland system consisting of (1) a 2-m3 three-chamber sedimentation tank, (2) a 5 m2 vertical flow constructed wetland, (3) a filter-unit with calcite aimed at removing phosphorus, and (4) a 10 m2 vertical flow constructed wetland. The indicator bacteria were enumerated before and after each unit of the wetland system during four monitoring episodes with different loading conditions. At a hydraulic loading rate of 520-1,370 mm/d, the first-stage vertical flow beds removed about 1.5 log-units of total coliforms, 1.7 log-units of faecal coliforms and 0.8 log-units of faecal streptococci. In the second stage bed receiving lower loadings both in term of concentration and quantity (260-690 mm/day), the eliminations were lower. It was not possible in the present study to identify any seasonal effects, but no measurements were done during summer. Recycling of treated effluent back to the sedimentation tank did not affect elimination. Area-based rate constants for the vertical flow wetland receiving effluent from the sedimentation tank averaged 3.2 m/d for total coliforms, 3.3 m/d for faecal coliforms and 2.1 m/d for faecal streptococci. The rate constants depended on loading rates. It is suggested that filtration is a major removal mechanism for bacterial indicator organisms in vertical flow constructed wetland systems.

Effects of clogging on hydraulic behavior in a vertical-flow constructed wetland system: A modelling approach

2017 ◽  
Vol 109 ◽  
pp. 41-47 ◽  
Author(s):  
Mengyao Yang ◽  
Mingzhi Lu ◽  
Hongfeng Bian ◽  
Lianxi Sheng ◽  
Chunguang He
Keyword(s):  
Constructed Wetland ◽  
Vertical Flow ◽  
Hydraulic Behavior ◽  
System A ◽  
Vertical Flow Constructed Wetland ◽  
Wetland System ◽  
Modelling Approach

scholarly journals Study of a Novel Vertical Flow Constructed Wetland System with Drop Aeration for Rural Wastewater Treatment

2011 ◽  
Vol 223 (2) ◽  
pp. 889-900 ◽  
Author(s):  
Juan Zou ◽  
Xuesong Guo ◽  
Yunping Han ◽  
Junxin Liu ◽  
Hanwen Liang
Keyword(s):  
Wastewater Treatment ◽  
Constructed Wetland ◽  
Vertical Flow ◽  
Vertical Flow Constructed Wetland ◽  
Wetland System ◽  
Rural Wastewater

Water Budget of Constructed Wetland System with Subsurface Vertical Flow in Sub-Humid Tropical Climate

2015 ◽  
Vol 1 (5) ◽  
pp. 235-242
Author(s):  
Édio Damásio da Silva Júnior ◽  
Rogério de Araújo Almeida ◽  
Elisa Rodrigues Siqueira ◽  
Ábio Roduvalho da Silva
Keyword(s):  
Constructed Wetland ◽  
Water Budget ◽  
Tropical Climate ◽  
Vertical Flow ◽  
Humid Tropical Climate ◽  
Wetland System
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