Long-Term Performance of Constructed Wetlands with Chemical Dosing for Phosphorus Removal

2014 ◽  
pp. 273-292 ◽  
Author(s):  
Gabriela Dotro ◽  
Raul Prieto Fort ◽  
Jan Barak ◽  
Mark Jones ◽  
Peter Vale ◽  
...  
Keyword(s):  
Constructed Wetlands ◽  
Phosphorus Removal ◽  
Long Term Performance ◽  
Term Performance

Full Scale Experience with Tertiary Contact Filtration

1984 ◽  
Vol 16 (10-11) ◽  
pp. 225-239 ◽  
Author(s):  
M Boller
Keyword(s):  
Phosphorus Removal ◽  
Full Scale ◽  
Operating Variables ◽  
Low Phosphorus ◽  
Total Process ◽  
Chemical Conditions ◽  
Long Term Performance ◽  
Term Performance ◽  
Process Combination

The first full-scale contact filtration plant for advanced phosphorus removal in Switzerland was built 1979. In a twelve month investigation, the following design and operational aspects were considered: optimal chemical conditions for phosphorus removal, multimedia filter configuration, long-term performance of the total process combination (which included conventional treatment with simultaneous precipitation and contact filtration), and operating variables as filtration velocity, filter run time and backwash water use. Under optimal conditions, contact filtration provided consistently low phosphorus and suspended solids levels at reasonable cost.

Using constructed wetlands to treat subsurface drainage from intensively grazed dairy pastures in New Zealand

2003 ◽  
Vol 48 (5) ◽  
pp. 207-213 ◽  
Author(s):  
C.C. Tanner ◽  
M. Long Nguyen ◽  
J.P.S. Sukias
Keyword(s):  
New Zealand ◽  
Constructed Wetlands ◽  
Subsurface Drainage ◽  
Organic N ◽  
Nutrient Concentrations ◽  
Start Up ◽  
Catchment Areas ◽  
Long Term Performance ◽  
Term Performance

Performance data, during the start-up period, are presented for constructed wetlands treating subsurface drainage from dairy pastures in Waikato (rain-fed) and Northland (irrigated), North Island, New Zealand. The wetlands comprised an estimated 1 and 2% of the drained catchment areas, respectively. Nitrate concentrations were high in the drainage inflows at both sites (medians 10 g m-3 at Waikato and 6.5 g m-3 at Northland), but organic N was also an important form of N at Waikato (37% of TN). Comparison of wetland inflow and outflow nutrient concentrations showed overall nutrient reductions during passage through the wetlands for NO3-N (34 and 94% for medians, respectively), TN (56 and 33%, respectively), and DRP (80%, Northland only). Median NH4-N (both sites) and DRP (Waikato) concentrations showed apparent increases between the wetland inlets and outlets. However, a mass balance calculated for the 3 month preliminary monitoring periods showed substantial mass removal of DRP (80%) and all measured forms of N (NO3-N 78%, NH4-N 41%, Org-N 99.8% and TN 96%) in the Waikato wetland. Monitoring of these systems needs to be continued through a range of seasons and years to fully assess their long-term performance.

Fine Particle Mass Monitoring with Low-Cost Sensors: Corrections and Long-Term Performance Evaluation

2019 ◽  
Author(s):  
Carl Malings ◽  
Rebecca Tanzer ◽  
Aliaksei Hauryliuk ◽  
Provat K. Saha ◽  
Allen L. Robinson ◽  
...  
Keyword(s):  
Performance Evaluation ◽  
Fine Particle ◽  
Low Cost ◽  
Particle Mass ◽  
Long Term Performance ◽  
Term Performance

Long-Term Performance after Interventional VSD Closure—Single Center Experience in Pediatric and Adult Patients

2020 ◽  
Author(s):  
C. P. Germann ◽  
M. Bergmann ◽  
J. Nordmeyer ◽  
B. Peters ◽  
F. Berger ◽  
...  
Keyword(s):  
Adult Patients ◽  
Single Center ◽  
Single Center Experience ◽  
Long Term Performance ◽  
Term Performance
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