A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Greywater Treatment by Vertical Subsurface Flow Constructed Wetlands Planted with Cyperus Involucratus
In recent decades, constructed wetlands (CWs) have been identified as a cost-effective technique that mimics natural processes in treating wastewater. Reduction of land area requirement while achieving high treatment capabilities is one of the major concerns currently. Therefore, this study evaluated the impact of greenhouse technology on greywater treatment. The experimental setup consists of eight vertical subsurface flow (VSSF) constructed wetland (CW) units planted with emergent macrophyte; Cyperus involucratus (umbrella palm). Each wetland unit is sized 45 × 65 cm (diameter x height), prepared using 8–10 mm gravel as the bed media, and planted with four shoots of umbrella palm, approximately 30 cm high. Then, four wetland units were kept inside a greenhouse, while the remaining four were kept outside the greenhouse. Each wetland unit had been fed with synthetic greywater at a 30 cm/day hydraulic loading rate (HLR). Water quality parameters such as pH, electrical conductivity (EC), five-day biochemical oxygen demand (BOD5), total suspended solids (TSS), total nitrogen (TN), ammonium nitrogen (NH4–N), nitrate nitrogen (NO3–N), total organic carbon (TOC) and Copper (Cu) were measured in water samples that were collected from the influent and effluents of each wetland unit. Further, TN and Cu uptake by umbrella palm with respect to plant growth were monitored throughout the study period. Results showed that VSSF CWs planted with locally available emergent macrophyte; Cyperus involucratus (umbrella palm) found to be efficient in removing BOD5, TSS, Cu and NO3–N from greywater, while NH4–N, TN and TOC, had a considerable removal in both inside the greenhouse (82, 87, 97, 76, 32, 51 and 45%, respectively) and outside greenhouse (82, 85, 97, 60, 48, 53 and 60%, respectively) wetland systems. No significant difference between the two wetland systems was obtained except for NO3–N removal, which showed a higher removal inside the greenhouse wetland system. Similarly, no significant difference in Cu and TN uptake by umbrella palms was observed in VSSF CWs kept inside and outside the greenhouse throughout the study period.
Greywater Treatment by Vertical Subsurface Flow Constructed Wetlands Planted with Cyperus Involucratus
In recent decades, constructed wetlands (CWs) have been identified as a cost-effective technique that mimics natural processes in treating wastewater. Reduction of land area requirement while achieving high treatment capabilities is one of the major concerns currently. Therefore, this study evaluated the impact of greenhouse technology on greywater treatment. The experimental setup consists of eight vertical subsurface flow (VSSF) constructed wetland (CW) units planted with emergent macrophyte; Cyperus involucratus (umbrella palm). Each wetland unit is sized 45 × 65 cm (diameter x height), prepared using 8–10 mm gravel as the bed media, and planted with four shoots of umbrella palm, approximately 30 cm high. Then, four wetland units were kept inside a greenhouse, while the remaining four were kept outside the greenhouse. Each wetland unit had been fed with synthetic greywater at a 30 cm/day hydraulic loading rate (HLR). Water quality parameters such as pH, electrical conductivity (EC), five-day biochemical oxygen demand (BOD5), total suspended solids (TSS), total nitrogen (TN), ammonium nitrogen (NH4–N), nitrate nitrogen (NO3–N), total organic carbon (TOC) and Copper (Cu) were measured in water samples that were collected from the influent and effluents of each wetland unit. Further, TN and Cu uptake by umbrella palm with respect to plant growth were monitored throughout the study period. Results showed that VSSF CWs planted with locally available emergent macrophyte; Cyperus involucratus (umbrella palm) found to be efficient in removing BOD5, TSS, Cu and NO3–N from greywater, while NH4–N, TN and TOC, had a considerable removal in both inside the greenhouse (82, 87, 97, 76, 32, 51 and 45%, respectively) and outside greenhouse (82, 85, 97, 60, 48, 53 and 60%, respectively) wetland systems. No significant difference between the two wetland systems was obtained except for NO3–N removal, which showed a higher removal inside the greenhouse wetland system. Similarly, no significant difference in Cu and TN uptake by umbrella palms was observed in VSSF CWs kept inside and outside the greenhouse throughout the study period.
Greywater Treatment by Vertical Subsurface Flow Constructed Wetlands Planted with Cyperus Involucratus
Lecture Notes in Civil Engineering
Dissanayake, Ranjith (editor) / Mendis, Priyan (editor) / Weerasekera, Kolita (editor) / De Silva, Sudhira (editor) / Fernando, Shiromal (editor) / Konthesingha, Chaminda (editor) / Gajanayake, Pradeep (editor) / Dayarathna, M. N. S. (author) / Weerakoon, G. M. P. R. (author) / Mowjood, M. I. M. (author)
International Conference on Sustainable Built Environment ; 2022 ; Yogyakarta, Indonesia
2023-08-10
15 pages
Article/Chapter (Book)
Electronic Resource
English
Greenhouse conditions , <italic>Cyperus involucratus</italic> , Synthetic greywater , Vertical subsurface flow constructed wetlands Energy , Sustainable Architecture/Green Buildings , Environmental Policy , Sociology, general , Energy Policy, Economics and Management , Building Construction and Design , Sustainable Development , Engineering
Gaseous Fluxes from Subsurface Flow Constructed Wetlands for Wastewater Treatment
| Online Contents | 2005