Effluent quality and reuse potential of domestic wastewater treated in a pilot-scale hybrid constructed wetland system

2015 ◽  
Vol 156 ◽  
pp. 115-120 ◽  
Author(s):  
Selma Ç. Ayaz ◽  
Özgür Aktaş ◽  
Lütfi Akça ◽  
Nur Fındık
Keyword(s):  
Constructed Wetland ◽  
Domestic Wastewater ◽  
Pilot Scale ◽  
Effluent Quality ◽  
Wetland System

An evaluation of pollutant removal from secondary treated sewage effluent using a constructed wetland system

1995 ◽  
Vol 32 (3) ◽  
pp. 87-93 ◽  
Author(s):  
P. R. Thomas ◽  
P. Glover ◽  
T. Kalaroopan
Keyword(s):  
Constructed Wetland ◽  
Control Cell ◽  
Oxygen Demand ◽  
Pilot Scale ◽  
Pollutant Removal ◽  
Sewage Effluent ◽  
Effluent Quality ◽  
Treated Sewage ◽  
Wetland System ◽  
Treated Sewage Effluent

Pilot scale investigations were carried out to examine the pollutant removal efficiency of a constructed wetland receiving secondary treated sewage effluent. Four constructed wetland cells were established, three of them planted with either Schoenoplectus validus, Juncus ingens or both species of macrophytes, and the fourth serving as an unvegetated control cell. Although there was a significant improvement in the effluent quality during the initial ten month period of monitoring, results to date have not indicated any overall trend for pollutant removal by a particular plant species. Biochemical oxygen demand and chemical oxygen demand removals averaged between 71-75% while suspended solids removals were around 85% in the macrophyte cells. Ammonia reductions were in the range 17-24% but better nitrate reductions between 65-80% were obtained. Phosphorus removal has been low (13%) in all four of the wetland cells and bore hole samples have shown no groundwater contamination with nitrogen or phosphorus from the wetland system to date.

scholarly journals Behavior of Zinc in a Constructed Wetland System Receiving Domestic Wastewater

2010 ◽  
Vol 8 (3) ◽  
pp. 231-237 ◽  
Author(s):  
Kaoru ABE ◽  
Akihito OOKUMA ◽  
Michio KOMADA ◽  
Sunao ITAHASHI ◽  
Kennji BANZAI
Keyword(s):  
Constructed Wetland ◽  
Domestic Wastewater ◽  
Wetland System

Effect of wastewater depth to the performance of short-term batching-experiments horizontal flow constructed wetland system in treating domestic wastewater

2020 ◽  
Vol 20 ◽  
pp. 101106 ◽  
Author(s):  
Fayeq Abdel Hafez Al-Ajalin ◽  
Mushrifah Idris ◽  
Siti Rozaimah Sheikh Abdullah ◽  
Setyo Budi Kurniawan ◽  
Muhammad Fauzul Imron
Keyword(s):  
Constructed Wetland ◽  
Domestic Wastewater ◽  
Horizontal Flow ◽  
Short Term ◽  
Wetland System

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

Enhanced reduction of excess sludge and nutrient removal in a pilot-scale A2O-MBR-TAD system

2011 ◽  
Vol 63 (8) ◽  
pp. 1547-1556 ◽  
Author(s):  
J. S. Ventura ◽  
S. Seo ◽  
I. Chung ◽  
I. Yeom ◽  
H. Kim ◽  
...  
Keyword(s):  
Organic Carbon ◽  
Nutrient Removal ◽  
Domestic Wastewater ◽  
Pilot Scale ◽  
Excess Sludge ◽  
E Coli ◽  
Effluent Quality ◽  
Cryptic Growth ◽  
A2o Process ◽  
Sludge Production

In this study, a pilot scale anaerobic-anoxic-oxic (A2O) process with submerged membrane (MBR) in the oxic tank was coupled with thermophilic aerobic digestion (TAD) reactor and was operated for longer than 600 days to treat real domestic wastewater. Regardless of the varying conditions of the system, the A2O-MBR-TAD process removed MLSS, TCOD, BOD, TN, TP, and E. coli about 99%, 96%, 96%, 70%, 83%, and 99%, respectively. The additional TP removal of the system was due to the precipitating agent directly added in the oxic reactor, without which TP removal was about 56%. In the TAD reactor, receiving MLSS from the oxic tank (MBR), about 25% of TSS and VSS were solubilized during 2 days of retention. The effluent of the TAD reactor was recycled into the anoxic tank of A2O-MBR to provide organic carbon for denitrification and cryptic growth. By controlling the flowrate of wasting stream from the MBR, sludge production decreased to almost zero. From these results, it was concluded that the A2O-MBR-TAD process could be a reliable option for excellent effluent quality and near zero-sludge production.

Comparison of nitrogen elimination rates of different constructed wetland designs

2011 ◽  
Vol 64 (5) ◽  
pp. 1122-1129 ◽  
Author(s):  
Eriona Canga ◽  
Sara Dal Santo ◽  
Alexander Pressl ◽  
Maurizio Borin ◽  
Guenter Langergraber
Keyword(s):  
Constructed Wetland ◽  
Elimination Rate ◽  
Domestic Wastewater ◽  
High Strength ◽  
Pilot Scale ◽  
Synthetic Wastewater ◽  
Main Layer ◽  
Average Value ◽  
In Series ◽  
Nitrogen Elimination

In this paper the nitrogen elimination rates of different constructed wetland (CW) designs reported in literature are compared with those obtained for outdoor and indoor 2-stage vertical flow (VF) systems. The outdoor system is located about 150 km west of Vienna. Both stages are planted with Phragmites australis and the system has been operated for 4 years continuously. During this period the average value of the nitrogen elimination rate was 3.30 g N m−2 d−1. The indoor system comprises three parallel operated 2-stage VF systems and is located in the technical lab hall at BOKU University. The design of the indoor system resembles the outdoor system. However, there are a few differences: (1) the indoor systems are not planted, and (2) different filter media have been used for the main layer of the first stages. With the indoor system the highest nitrogen elimination rate achieved was 2.24 g N m−2 d−1 for the system with zeolite and impounded drainage layer. Similar results have been found in France for treating raw wastewater with VF and horizontal flow (HF) beds in series with nitrogen elimination rates of 1.89 and 2.82 g N m−2 d−1 for differently designed HF beds. The highest nitrogen elimination rates of 15.9 g N m−2 d−1 reported were for pilot-scale VF CWs treating high-strength synthetic wastewater (total nitrogen of 305 mg L−1 in the influent) in Thailand. It has been shown that the outdoor two-stage VF CW system has one of the highest nitrogen elimination rates of CWs treating domestic wastewater.

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