Nickel and Total Phosphorus Removal Characteristics According to ORP and pH Operating Conditions in the BPC Unit Process for Plating Wastewater

2020 ◽  
Vol 21 (6) ◽  
pp. 453-457
Author(s):  
Byung-Gil Jung ◽  
Seung-Won Lee ◽  
Kwon-Gam Yun ◽  
Jin-Hee Jeong ◽  
Young-Ik Choi
Keyword(s):  
Total Phosphorus ◽  
Phosphorus Removal ◽  
Operating Conditions ◽  
Unit Process ◽  
Plating Wastewater

Performance of family-size sequencing batch reactor and rotating biological contactor units treating sewage at various operating conditions

2000 ◽  
Vol 41 (1) ◽  
pp. 97-104 ◽  
Author(s):  
J.C. Akunna ◽  
C. Jefferies
Keyword(s):  
Total Phosphorus ◽  
Sequencing Batch Reactor ◽  
Batch Reactor ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Ammonia Nitrogen ◽  
Operating Conditions ◽  
The Other ◽  
Rotating Biological Contactor ◽  
Effluent Quality

Field trials were carried out using two types of package units designed for the treatment of domestic sewage from individual households. One of the units was a commercially available rotating biological contactor (RBC) system. The other was a newly developed sequencing batch reactor (SBR) system. Trials were carried at the site of a local sewage treatment plant where degritted raw sewage from a combined sewerage network was fed to the two units for a period of four months. Both units produced good effluent quality, well below 20/30 (BOD/SS) during steady-state performance. However, shorter start-up time was observed with the SBR unit together with better effluent quality (up to BOD<10 mg/l and SS<15 mg/l). Furthermore, the SBR unit produced effluents with ammonia nitrogen and total phosphorus levels of 3 mg/l and 2 mg/l respectively, for influent levels that varied from 20 to 60 mg N-NH3/l and from 15 to 17 mg/l of total phosphorus. On the other hand, significant nutrient removal did not seem tohave occurred in the RBC unit. During testing to meet the requirements of British Standard (BS 6297), it was observed that the SBR can tolerate shockloads and periods following zero flow better than the RBC unit.

Phosphorus and Nitrogen Removal from Sewage by Modified Honeycomb Cinder

2013 ◽  
Vol 726-731 ◽  
pp. 2931-2935
Author(s):  
Qi Bin Liang ◽  
Yun Gen Liu ◽  
Kun Tian
Keyword(s):  
Nitrogen Removal ◽  
Phosphorus Removal ◽  
Contact Time ◽  
Low Cost ◽  
Ammonia Nitrogen ◽  
Domestic Sewage ◽  
Operating Conditions ◽  
Optimal Conditions ◽  
Batch Experiments ◽  
Adsorption Capacities

The study aimed at phosphorus and nitrogen removal by honeycomb cinder modified with Zinc chloride (ZnCl2). By bench-scale batch experiments, honeycomb cinders with different modification time and ZnCl2 dosage were modified and its adsorption capacities were evaluated by methylence blue as the adsorbate. Under the optimal modification conditions, large amount modified honeycomb cinders were prepared to remove the phosphorus and nitrogen from domestic sewage, which different operating conditions of honeycomb cinders dosage, and contact time were considered. The results show that removal efficiencies of total phosphate (TP), orthophosphate (PO43-P), total nitrogen (TN) and ammonia nitrogen (NH4+-N) could reach 89.9%, 96.7%, 18.9% and 23.3% under the optimal conditions, respectively. Modified honeycomb cinders might be an effective and low cost adsorbent for phosphorus removal.

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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