Using aluminum-doped magnetic nanoparticles for total phosphorus removal in poultry processing wastewater

2017 ◽  
Vol 85 ◽  
pp. 103-112
Author(s):  
Robert Cowles ◽  
Marc Zanghi ◽  
Leon Liu ◽  
Jie Xu
Keyword(s):  
Magnetic Nanoparticles ◽  
Total Phosphorus ◽  
Phosphorus Removal ◽  
Poultry Processing

NOVEL TEST FOR TOTAL PHOSPHORUS REMOVAL OPTIMIZATION IN PRIMARY CLARIFIERS

2007 ◽  
Vol 2007 (2) ◽  
pp. 1556-1559
Author(s):  
Marija Peric ◽  
Rumana Riffat ◽  
Sudhir N. Murthy ◽  
Beverley Stinson ◽  
Alan Cassel ◽  
...  
Keyword(s):  
Total Phosphorus ◽  
Phosphorus Removal

Sulphur and phosphorus transformations in wastewater storage and treatment reservoirs in northeast Brazil

2000 ◽  
Vol 42 (10-11) ◽  
pp. 203-210 ◽  
Author(s):  
A. L. Araújo ◽  
R. de Oliveira ◽  
D. D. Mara ◽  
H. W. Pearson ◽  
S. A. Silva
Keyword(s):  
Total Phosphorus ◽  
Phosphorus Removal ◽  
Rest Period ◽  
Pilot Scale ◽  
Point Of View ◽  
Faecal Coliform ◽  
Northeast Brazil ◽  
Organic Loading ◽  
Biological Toxicity ◽  
Who Guideline

Sulphur and phosphorous transformations were studied in two pilot-scale wastewater storage and treatment reservoirs on the basis of four experiments carried out at EXTRABES in northeast Brazil. The reservoirs were fed with the effluent from an anaerobic pond and after filling they were allowed to rest until faecal coliform numbers dropped below 100 cfu/100 ml (10 times below the WHO guideline for unrestricted irrigation). During the filling periods sulphate was reduced to sulphide which reached high values by the beginning of the rest period, decreasing thereafter due to its oxidation, mainly to sulphate. Based on these results a rest period of at least two months is required for sulphide to fall to safe levels from the point of view of biological toxicity. Total phosphorus removal in the reservoirs was low, 9–33%; soluble orthophosphate concentrations remained virtually unchanged, especially when the initial organic loading was high.

scholarly journals Characterizing phosphorus removal in passive waste stabilization ponds in Arctic communities

2016 ◽  
Vol 2 (1) ◽  
pp. 1-14 ◽  
Author(s):  
Jordan J. Schmidt ◽  
Colin M. Ragush ◽  
Wendy H. Krkosek ◽  
Graham A. Gagnon ◽  
Rob C. Jamieson
Keyword(s):  
Total Phosphorus ◽  
Phosphorus Removal ◽  
Organic Phosphorus ◽  
Domestic Wastewater ◽  
The Arctic ◽  
Waste Stabilization Ponds ◽  
Stabilization Ponds ◽  
Waste Stabilization ◽  
Fractionation Analysis ◽  
Arctic Communities

A majority of communities in the Canadian territory of Nunavut rely on passive waste stabilization ponds (WSPs) for domestic wastewater treatment. Little research has been conducted on the treatment performance of these systems. Therefore, in response to impending federal wastewater regulations, a research program was conducted in order to characterize contaminant removal, with phosphorus a contaminant of particular concern. The performance of WSPs in the Arctic communities of Kugaaruk, Pond Inlet, Grise Fiord, and Clyde River was evaluated from 2011 to 2014. Removal of total phosphorus was highly variable, ranging from 24% (Pond Inlet, 2014) to 76% (Grise Fiord, 2011). The average removal efficiency was 44%. Effluent total phosphorus concentrations generally exceeded 7 mg P/L, partly due to elevated raw wastewater concentrations. Over the course of the treatment season (defined as June to September, when the WSP is thawed), limited additional total phosphorus removal was observed. A fractionation analysis of WSP sediments showed that organic phosphorus and phosphorus bound to aluminum and iron were the predominant forms, which provided insight into primary treatment mechanisms. Further studies on these mechanisms are needed in order to optimize Arctic WSP treatment.

Total Phosphorus Removal to Low Levels Through Tertiary Reactive Filtration

2007 ◽  
Vol 2007 (17) ◽  
pp. 1625-1640
Author(s):  
William Leaf ◽  
Bruce Johnson ◽  
Remy Newcombe
Keyword(s):  
Total Phosphorus ◽  
Phosphorus Removal ◽  
Low Levels

scholarly journals Performance Assessment of a Laboratory Scale Prototype Biofiltration System in Tropical Region

2019 ◽  
Vol 11 (7) ◽  
pp. 1947 ◽  
Author(s):  
Andreas Hermawan ◽  
Amin Talei ◽  
Janet Leong ◽  
Mayuran Jayatharan ◽  
Hui Goh ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Total Phosphorus ◽  
Phosphorus Removal ◽  
Temperate Climate ◽  
Root Penetration ◽  
Filter Media ◽  
Study Results ◽  
Tropical Conditions ◽  
Urban Catchments ◽  
Stormwater Retention

Biofiltration systems, as one of the best management practices, have good potentials to improve stormwater quality and hydrology of urban catchments. While biofiltration systems are well-studied in developed countries, the majority of those studies are conducted for temperate climate and there is a lack of lab-scale and field-scale studies on such systems under tropical conditions. This paper focuses on the performance of a lab-scale prototype biofiltration systems in stormwater retention efficiency as well as pollutants removal (including heavy metals and nutrients) from synthetic stormwater reproducing tropical rainfall events. A three-layer sand-based filter media with two different native plants including Pedilanthus tithymaloides and Cyperus alternifolius was selected for this study. Results showed that the system with Cyperus has a better stormwater retention capacity compared to the one with Pedilanthus. In addition, the observed infiltration rate in Cyperus and Pedilanthus were 338 mm/h and 267 mm/h, respectively. The better hydraulic performance in the system with Cyperus was attributed to the deeper and more extensive root penetration of this plant (as deep as 800 mm) compared to Pedilanthus (as deep as 250 mm). While both systems failed to perform well in removing total nitrogen, they performed significantly better in removing total phosphorus (Cyperus and Pedilanthus removed 67.3% and 62.5% of total phosphorus, respectively). The statistical analysis of results showed that the top 100 mm layer of filter media is the main contributor to total phosphorus removal. However, no major differences were observed between the two systems in phosphorus removal. Moreover, both systems were also capable of removing the available heavy metals (i.e., Fe, Cu, Mn, Ni, Pb, and Zn) as the removal efficiencies exceeded 90%, except for Fe (76%). Similar to phosphorus, it was concluded that the top layer is the major contributor to the heavy metals removal. Overall, the biofiltration system using Cyperus was found to be a successful system for operating under tropical conditions.

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