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 Tertiary phosphorus removal to extremely low levels by coagulation-flocculation and cloth-filtration

2020 ◽  
Vol 82 (1) ◽  
pp. 131-143 ◽  
Author(s):  
T. Fundneider ◽  
L. Alejo ◽  
S. Lackner
Keyword(s):  
Total Phosphorus ◽  
Phosphorus Removal ◽  
Membrane Filtration ◽  
Soluble Reactive Phosphorus ◽  
Organic Micropollutants ◽  
Synergy Effects ◽  
Coupled Process ◽  
Low Levels ◽  
Reactive Phosphorus ◽  
Solids Removal

Abstract Higher standards in the European Water Framework Directive and national directive demand advanced wastewater treatment for removal of nutrients and organic micropollutants before the discharge into water bodies. Systematic investigations regarding relative dosage and filtration processes for removal of flocculated solids are currently lacking. In this study, the performance of technologies for advanced removal of total phosphorus down to <100 μg/L with pile cloth-filtration (CF) and membrane filtration was verified and synergy effects for the removal of other contaminants were identified. The results show that an over-stoichiometric addition of coagulants of >5 mol Me3+/mol sRP was necessary to achieve soluble reactive phosphorus (sRP) concentrations of <50 μg/L in the effluent. After the coupled process of tertiary phosphorus removal and solids removal, the soluble non-reactive phosphorus (sNRP) concentration regulates the lowest total phosphorus effluent concentration. sNRP is also partially, but not completely, removed by the use of coagulants. CF has proven to be an alternative technology for the removal of phosphorus and total suspended solids below the detection limit.

Saving phosphorus removal at the Henderson NV plant

2012 ◽  
Vol 65 (7) ◽  
pp. 1318-1322 ◽  
Author(s):  
J. Barnard ◽  
D. Houweling ◽  
H. Analla ◽  
M. Steichen
Keyword(s):  
Fatty Acids ◽  
Phosphorus Removal ◽  
Volatile Fatty Acids ◽  
Biological Phosphorus Removal ◽  
Case Histories ◽  
Mixed Liquor ◽  
Removal Process ◽  
Low Levels ◽  
Anaerobic Zone ◽  
Biological Phosphorus

While the mechanism of biological phosphorus removal (BPR) and the need for volatile fatty acids (VFA) have been well researched and documented to the point where it is now possible to design a plant with a very reliable phosphorus removal process using formal flow sheets, BPR is still observed in a number of plants that have no designated anaerobic zone, which was considered essential for phosphorus removal. Some examples are given in this paper. A theory is proposed and then applied to solve problems with a shortage of VFA in the influent of the Henderson NV plant. Mixed liquor was fermented in the anaerobic zone, which resulted in phosphorus removal to very low levels. This paper will discuss some of the background, and some case histories and applications, and present a simple postulation as to the mechanism and efforts at modelling the results.

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.

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