Feasibility of using tuberose (P. tuberosaL.) in horizontal subsurface flow constructed wetland for heavy metal removal from domestic wastewater

2015 ◽  
Vol 35 (1) ◽  
pp. 125-132 ◽  
Author(s):  
Mohini Singh ◽  
Rajeev K. Srivastava
Keyword(s):  
Heavy Metal ◽  
Constructed Wetland ◽  
Metal Removal ◽  
Heavy Metal Removal ◽  
Subsurface Flow ◽  
Domestic Wastewater ◽  
Subsurface Flow Constructed Wetland ◽  
Horizontal Subsurface Flow

Performance Evaluation of the Horizontal Subsurface Flow Constructed Wetland with Ipomoea Aquatica Plant for Rural Domestic Wastewater Treatment

2014 ◽  
Vol 1073-1076 ◽  
pp. 965-969 ◽  
Author(s):  
Ahmed Mohammed Osman ◽  
Xi Wu Lu
Keyword(s):  
Removal Efficiency ◽  
Constructed Wetland ◽  
Growth Parameters ◽  
Subsurface Flow ◽  
Operation Time ◽  
Domestic Wastewater ◽  
System Operation ◽  
Ipomoea Aquatica ◽  
Subsurface Flow Constructed Wetland ◽  
Horizontal Subsurface Flow

In this study, the performance treatment of horizontal subsurface flow constructed wetland (HSFCW) was evaluated. The HSFCW built as a tertiary treatment process after the biological reactors to improve the effluent quality. The HSFCW system was operated with different hydraulic loading rates (HLRs) ranged from 0.15 to 0.333 m3/ (m2.d) to assess their influence on removal efficiency. During the system operation time, the average temperature was ranged of 22.3 to 31.2 °C and pH ranges was 7.3 – 8.1. The Ipomoea aquatica (Chinese spinach) planted into HSFCW system and the growth parameters during the experimental operation observed. The Ipomoea aquatica growth parameters such as the plant height, a fresh and dry weights were monitored and measured. The influent and effluent of chemical oxygen demand (COD), ammonium nitrogen (NH4-N), total nitrogen (TN) and total phosphorus (TP) were examined. The removal efficiency for all parameters showed decreased with an increase in HLR from 0.15 to 0.333 m3/ (m2.day). The results demonstrated that the average removal efficiency of the COD, NH4-N, TN and TP during system operation is 52.9%, 64.6%, 58.2% and 72.8% respectively. These results confirm that the HSFCW has a good efficient in treatment and can be used for the nutrients and organic matter removal from the domestic wastewater.

Ibuprofen and Naproxen removal from domestic wastewater using a Horizontal Subsurface Flow Constructed Wetland coupled to Ozonation

2019 ◽  
Vol 135 ◽  
pp. 89-97 ◽  
Author(s):  
Juan Camilo Lancheros ◽  
Carlos Arturo Madera-Parra ◽  
Aracelly Caselles-Osorio ◽  
Wilmar Alexander Torres-López ◽  
Ximena María Vargas-Ramírez
Keyword(s):  
Constructed Wetland ◽  
Subsurface Flow ◽  
Domestic Wastewater ◽  
Subsurface Flow Constructed Wetland ◽  
Horizontal Subsurface Flow

Phosphate and ammonium removal by constructed wetlands with horizontal subsurface flow, using shale as a substrate

1997 ◽  
Vol 35 (5) ◽  
pp. 95-102 ◽  
Author(s):  
A. Drizo ◽  
C. A. Frost ◽  
K. A. Smith ◽  
J. Grace
Keyword(s):  
Phragmites Australis ◽  
Constructed Wetlands ◽  
Constructed Wetland ◽  
Metal Removal ◽  
Heavy Metal Removal ◽  
Subsurface Flow ◽  
Ammonium Removal ◽  
Ammonium N ◽  
Horizontal Subsurface Flow ◽  
P Removal

The objective was to investigate the performance of constructed wetlands with horizontal subsurface flow, using shale as a substrate, in removal of phosphate (P) and ammonium (N) from sewage. Shale was selected on the basis of its physico-chemical properties and its potential for P removal, investigated in an earlier study. A laboratory-scale constructed wetland system (CWS) employing horizontal subsurface flow was set up in a greenhouse, with and without Phragmites australis (reeds), and its capacity for simultaneous phosphate and ammonium removal from a synthetic sewage was monitored over a period of ten months. Both the planted and unplanted systems showed an extremely high P removal of 98–100% over the whole period of investigation. Ammonium N was also completely removed in the planted tanks, whereas in the unplanted ones the rates of removal varied between 40 and 75%; removal of nitrate N varied between 85 and 95% in planted and between 45 and 75% in unplanted tanks. pH, Eh and temperature did not differ significantly among planted and unplanted tanks, but the inlet Eh was correlated with P removal (r2 = 0.73; p < 0.05). The presence of Phragmites australis contributed significantly (p < 0.05) to P and N removal. In addition the plants showed excellent growth (up to 2 m in the first year), with good root and rhizome development, and showed potential for heavy metal removal. It was concluded that the shale-based system (which uses a readily available material) shows promise as a substrate for constructed wetland systems.

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