COLIFORM BACTERIA REMOVAL FROM SEPTIC WASTEWATER IN A PILOT-SCALE COMBINED CONSTRUCTED WETLAND SYSTEM

2012 ◽  
Vol 11 (10) ◽  
pp. 1873-1879 ◽  
Author(s):  
Bilal Tuncsiper ◽  
Selma C. Ayaz ◽  
Lutfi Akca
Keyword(s):  
Constructed Wetland ◽  
Pilot Scale ◽  
Coliform Bacteria ◽  
Wetland System ◽  
Bacteria Removal

scholarly journals Enhancement of rhizocompetence in pathogenic bacteria removal of a constructed wetland system

2019 ◽  
Vol 79 (2) ◽  
pp. 251-259 ◽  
Author(s):  
Marwa Ben Saad ◽  
Myriam Ben Said ◽  
Isabel Sanz-Sáez ◽  
Olga Sánchez ◽  
Jordi Morató ◽  
...  
Keyword(s):  
Constructed Wetland ◽  
Pathogenic Bacteria ◽  
Active Role ◽  
Pilot Scale ◽  
Salmonella Typhi ◽  
Inactivation Kinetics ◽  
Cultivable Bacteria ◽  
Wetland System ◽  
Kinetics Of ◽  
Bacteria Removal

Abstract The main goal of the present study was to enhance the rhizobacterium potential in a horizontal subsurface flow constructed wetland system planted with Phragmites australis, through environmentally friendly biological approaches. The bioinoculation of antagonist bacteria has been used to promote higher rhizosphere competence and improve pathogenic bacteria removal from wastewater. The experiment was performed both with single and sequential bioinoculation. The results showed that strain PFH1 played an active role in pathogenic bacteria removal, remarkably improving inactivation kinetics of the pathogenic tested bacterium Salmonella typhi in the plant rhizosphere. The single bioinoculation of selected bacteria into the rhizosphere of P. australis improved the kinetics of S. typhi inactivation by approximately 1 U-Log10 (N/N0) (N is the number of viable cultured bacteria at time t, N0 is the number of viable and cultivable bacteria at time t0) compared to the control. By a series of multi-bioinoculations, the enhancement of pathogenic bacteria reduction compared to the inhibition rate in the pilot-scale control was of 2 U-Log10(N/N0). These findings suggested that this strain represents a promising candidate to enhance water purification in constructed wetlands.

Treatment of oil and grease in produced water by a pilot-scale constructed wetland system using biogeochemical processes

Chemosphere ◽  
2014 ◽  
Vol 103 ◽  
pp. 67-73 ◽  
Author(s):  
Michael J. Pardue ◽  
James W. Castle ◽  
John H. Rodgers ◽  
George M. Huddleston
Keyword(s):  
Constructed Wetland ◽  
Produced Water ◽  
Pilot Scale ◽  
Biogeochemical Processes ◽  
Oil And Grease ◽  
Wetland System

Effect of recirculation on organic matter removal in a hybrid constructed wetland system

2011 ◽  
Vol 63 (10) ◽  
pp. 2360-2366 ◽  
Author(s):  
S. Ç. Ayaz ◽  
N. Findik ◽  
L. Akça ◽  
N. Erdoğan ◽  
C. Kınacı
Keyword(s):  
Organic Matter ◽  
Constructed Wetland ◽  
Suspended Solids ◽  
Flow System ◽  
Pilot Scale ◽  
Surface Flow ◽  
Small Communities ◽  
Anaerobic Reactors ◽  
Wetland System ◽  
Anaerobic Pretreatment

This research project aimed to determine the technologically feasible and applicable wastewater treatment systems which will be constructed to solve environmental problems caused by small communities in Turkey. Pilot-scale treatment of a small community's wastewater was performed over a period of more than 2 years in order to show applicability of these systems. The present study involves removal of organic matter and suspended solids in serially operated horizontal (HFCW) and vertical (VFCW) sub-surface flow constructed wetlands. The pilot-scale wetland was constructed downstream of anaerobic reactors at the campus of TUBITAK-MRC. Anaerobically pretreated wastewater was introduced into this hybrid two-stage sub-surface flow wetland system (TSCW). Wastewater was first introduced into the horizontal sub-surface flow system and then the vertical flow system before being discharged. Recirculation of the effluent was tested in the system. When the recirculation ratio was 100%, average removal efficiencies for TSCW were 91 ± 4% for COD, 83 ± 10% for BOD and 96 ± 3% for suspended solids with average effluent concentrations of 9 ± 5 mg/L COD, 6 ± 3 mg/L BOD and 1 mg/L for suspended solids. Comparing non-recirculation and recirculation periods, the lowest effluent concentrations were obtained with a 100% recirculation ratio. The effluent concentrations met the Turkish regulations for discharge limits of COD, BOD and TSS in each case. The study showed that a hybrid constructed wetland system with recirculation is a very effective method of obtaining very low effluent organic matter and suspended solids concentrations downstream of anaerobic pretreatment of domestic wastewaters in small communities.

Performance of a hybrid pilot-scale constructed wetland system for treating oil sands process-affected water from the Athabasca oil sands

2017 ◽  
Vol 102 ◽  
pp. 152-165 ◽  
Author(s):  
Andrew D. McQueen ◽  
Maas Hendrikse ◽  
Daniel P. Gaspari ◽  
Ciera M. Kinley ◽  
John H. Rodgers ◽  
...  
Keyword(s):  
Constructed Wetland ◽  
Oil Sands ◽  
Pilot Scale ◽  
Athabasca Oil Sands ◽  
Wetland System
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