Three years of operation of North America's first nutrient recovery facility

2013 ◽  
Vol 68 (4) ◽  
pp. 763-768 ◽  
Author(s):  
N. Cullen ◽  
R. Baur ◽  
P. Schauer
Keyword(s):  
Phosphorus Content ◽  
Positive Impact ◽  
Treatment Plant ◽  
Full Scale ◽  
Phosphorus Loading ◽  
Nutrient Recovery ◽  
Biological Phosphorus Removal ◽  
Side Stream ◽  
Plant Operations ◽  
Biological Phosphorus

The first full-scale nutrient recovery installation in North America became operational in May 2009 at the Clean Water Service's Durham Advanced Wastewater Treatment Plant in Tigard, Oregon. Recovering ammonia and phosphorus from the dewatering side stream as struvite has a positive impact on plant operations. Significantly reducing the phosphorus recycle lowers the phosphorus loading on the plant, stabilizes biological phosphorus removal, reduces the amount of chemicals needed to remove phosphorus, reduces both the dry tonnes of biosolids generated and the phosphorus content of the biosolids, and provides revenue from the sale of the struvite. To increase struvite production and to decrease struvite potential in the digestion system, the Waste Activated Sludge Stripping To Remove Internal Phosphorus (WASSTRIP™) process was implemented full-scale in summer 2011. Results indicate a potential 60% increase in struvite production is achievable.

Full Scale Experiences with Nutrient Removal at Two Wastewater Treatment Plants in The Netherlands

1993 ◽  
Vol 27 (5-6) ◽  
pp. 343-355 ◽  
Author(s):  
H. Draaijer ◽  
A. H. M. Buunen-van Bergen ◽  
E. van't Oever ◽  
A. A. J. C. Schellen
Keyword(s):  
The Netherlands ◽  
Total Nitrogen ◽  
Wastewater Treatment Plants ◽  
Full Scale ◽  
Biological Phosphorus Removal ◽  
Nitrogen And Phosphorus ◽  
Total N ◽  
Side Stream ◽  
Biological Phosphorus ◽  
Total P

Two full scale projects are described in this paper; these are the Bergambacht wastewater plant (carrousel) and the Terneuzen wastewater plant (Schreiber system). Both plants use a system of intermittent aeration to combine nitrification and denitrification processes. At the Bergambacht plant biological phosphorus removal is carried out by the introduction of the side stream process. At the Terneuzen plant it is carried out by introducing anaerobic periods in the aeration tanks. The objective is to meet the new total nitrogen and phosphorus effluent standards in The Netherlands of resp. 10-15 and 1-2 mg/l. At the Terneuzen wastewater plant the standards could not be reached for total-nitrogen, mainly due to the low BOD to Kj-N ratio of 2:8 in the feed to the aeration tanks. Adjustments are suggested to improve the denitrification rate. At the Bergambacht wastewater plant effluent concentrations of 6 - 7 mg/l total N and 0.3 mg/l total P were achieved.

Optimization of Effluent Phosphorus Control for Al-Aziziah (Wasit) Wastewater Treatment Plant

2015 ◽  
Vol 3 (1) ◽  
pp. 1-8
Author(s):  
Mohammed Siwan Shamkhi
Keyword(s):  
Phosphorus Removal ◽  
Treatment Plant ◽  
Simulation Software ◽  
Stream Line ◽  
Precipitation Process ◽  
Biological Phosphorus Removal ◽  
Side Stream ◽  
Phosphorus Control ◽  
Stream Lines ◽  
Biological Phosphorus

The combination between the enhance biological phosphorus removal EBPR process and chemical phosphorous precipitation process removal from wastewater to avoid the instability of the biological phosphorus removal process due to temperature variation has been simulated and optimized by implementing three different strategies in the GPS-X 5.0 modeling and simulation software (Hydro mantis). The results were demonstrated that the annual consumption of alum for the three different phosphorus control strategies (side stream line dosing only, wastewater line dosing only and dosing at both wastewater and side stream lines) were 290, 80 and 68 tons Alum/year respectively. Therefore, the implement of both wastewater and side stream lines dosing strategy show a better phosphorus removal choice in terms of effluent quality and amount of alum used.

scholarly journals Identity and Ecophysiology of Uncultured Actinobacterial Polyphosphate-Accumulating Organisms in Full-Scale Enhanced Biological Phosphorus Removal Plants

2005 ◽  
Vol 71 (7) ◽  
pp. 4076-4085 ◽  
Author(s):  
Yunhong Kong ◽  
Jeppe Lund Nielsen ◽  
Per Halkjær Nielsen
Keyword(s):  
Phosphorus Removal ◽  
Treatment Plant ◽  
Full Scale ◽  
16S Rrna Genes ◽  
Rrna Genes ◽  
Fish Analysis ◽  
Enhanced Biological Phosphorus Removal ◽  
Biological Phosphorus Removal ◽  
Polyphosphate Accumulating Organisms ◽  
Biological Phosphorus

ABSTRACT Microautoradiography combined with fluorescence in situ hybridization (MAR-FISH) was used to screen for potential polyphosphate-accumulating organisms (PAO) in a full-scale enhanced biological phosphorus removal (EBPR) plant. The results showed that, in addition to uncultured Rhodocyclus-related PAO, two morphotypes hybridizing with gene probes for the gram-positive Actinobacteria were also actively involved in uptake of orthophosphate (Pi). Clone library analysis and further investigations by MAR-FISH using two new oligonucleotide probes revealed that both morphotypes, cocci in clusters of tetrads and short rods in clumps, were relatively closely related to the genus Tetrasphaera within the family Intrasporangiaceae of the Actinobacteria (93 to 98% similarity in their 16S rRNA genes). FISH analysis of the community biomass in the treatment plant investigated showed that the short rods (targeted by probe Actino-658) were the most abundant (12% of all Bacteria hybridizing with general bacterial probes), while the cocci in tetrads (targeted by probe Actino-221) made up 7%. Both morphotypes took up Pi aerobically only if, in a previous anaerobic phase, they had taken up organic matter from wastewater or a mixture of amino acids. They could not take up short-chain fatty acids (e.g., acetate), glucose, or ethanol under anaerobic or aerobic conditions. The storage compound produced during the anaerobic period was not polyhydroxyalkanoates, as for Rhodocyclus-related PAO, and its identity is still unknown. Growth and uptake of Pi took place in the presence of oxygen and nitrate but not nitrite, indicating a lack of denitrifying ability. A survey of the occurrence of these actinobacterial PAO in 10 full-scale EBPR plants revealed that both morphotypes were widely present, and in several plants more abundant than the Rhodocyclus-related PAO, thus playing a very important role in the EBPR process.

The Concept of Phosphorus Storage Capability and its Implications for Design of Systems for Enhanced Biological Uptake of Phosphate

1991 ◽  
Vol 23 (4-6) ◽  
pp. 577-584 ◽  
Author(s):  
Movva Reddy
Keyword(s):  
Steady State ◽  
Phosphorus Removal ◽  
Phosphorus Content ◽  
Phosphorus Loading ◽  
Activated Sludge Process ◽  
Biological Phosphorus Removal ◽  
Biological Uptake ◽  
Cell Residence Time ◽  
Biological Phosphorus ◽  
Phosphorus Storage

At steady state, the activated sludge process incorporating an anaerobic zone in the process train will have a fixed maximum phosphorus storage capabil ity. The maximum phosphorus storage capability can be related to the maximum phosphorus content the process sludge can incorporate. Data are presented showing that, as long as the sludge phosphorus content value does not exceed the maximum phosphorus content value, the phosphorus removal efficiency of the enhanced biological phosphorus removal process will be independent of the influent phosphorus loading and steady state net sludge yield or mean cell residence time.

Introducing biological phosphorus removal in an alternating plant by means of control: a full scale study

2006 ◽  
Vol 53 (4-5) ◽  
pp. 133-141 ◽  
Author(s):  
C. Rosen ◽  
P. Ingildsen ◽  
T. Guildal ◽  
T. Munk Nielsen ◽  
M.K. Nielsen ◽  
...  
Keyword(s):  
Control System ◽  
Nitrogen Removal ◽  
Control Strategy ◽  
Phosphorus Removal ◽  
Treatment Plant ◽  
Full Scale ◽  
Biological Phosphorus Removal ◽  
Fully Integrated ◽  
Biological Nitrogen ◽  
Biological Phosphorus

In this paper, a control strategy for introducing enhanced biological phosphorus removal (EBPR) in an alternating plant designed for enhanced biological nitrogen removal (EBNR) is presented. Alternating aerobic and anaerobic conditions to promote EBPR are provided by controlling the phases of the operational cycle, instead of a separate anaerobic volume. By utilising the control schemes already built in the STAR® control system for nitrogen removal, the control strategy is fully integrated in the system. The control system relies on on-line measurements of nitrogen (ammonia and/or nitrate) and orthophosphate. The control strategy has been implemented in full-scale operation at the Avedøre wastewater treatment plant in Denmark and the results show clear indications of success. The control strategy has operated robustly for several months with a 60% decrease in use of precipitation chemicals.

Biological Phosphorus Removal Characteristics in a Full-Scale Unitank Wastewater Treatment Plant

2012 ◽  
Vol 610-613 ◽  
pp. 1696-1700
Author(s):  
Zhen Zhou ◽  
Wen Rui Shao ◽  
Can Xing ◽  
Zheng Li ◽  
Peng Qiong Guan ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Wastewater Treatment Plant ◽  
Treatment Plant ◽  
P Uptake ◽  
Full Scale ◽  
Biological Phosphorus Removal ◽  
Release Process ◽  
Oxidation Reduction ◽  
P Content ◽  
Biological Phosphorus

The biological phosphorus (P) removal characteristics of a full-scale Unitank wastewater treatment plant (WWTP) were investigated by field survey, model analysis and sludge P content determination. In the Unitank WWTP, oxidation-reduction potential (ORP) reached the lowest value of -17 mV and the highest value of 130 mV at the end of anoxic/anaerobic stage and aerobic stage, respectively. The anaerobic P release process could be fitted by first-order kinetics with rate constant of 3.52 h-1, while the maximum aerobic P uptake rate was 3.31 mgP/(L•h). The measured sludge P content in the Shidongkou WWTP was 15.4±2.1 mgP/gSS, significantly lower than that in full-scale AAO WWTPs.

Modelling and control strategy testing of biological and chemical phosphorus removal at Avedøre WWTP

2006 ◽  
Vol 53 (4-5) ◽  
pp. 105-113 ◽  
Author(s):  
P. Ingildsen ◽  
C. Rosen ◽  
K.V. Gernaey ◽  
M.K. Nielsen ◽  
T. Guildal ◽  
...  
Keyword(s):  
Control Strategy ◽  
Phosphorus Removal ◽  
Control Strategies ◽  
Treatment Plant ◽  
Full Scale ◽  
Operational Experience ◽  
Biological Phosphorus Removal ◽  
To Come ◽  
And Control ◽  
Biological Phosphorus

The biological phosphorus removal process is often implemented at plants by the construction of an anaerobic bio-p tank in front of the traditional N removing plant configuration. However, biological phosphorus removal is also observed in plant configurations constructed only for nitrogen removal and simultaneous or post-precipitation. The operational experience with this “accidental” biological phosphorus removal is often mixed with quite a lot of frustration, as the process seems to come and go and hence behaves quite uncontrollably. The aim of this work is to develop ways of intentionally exploiting the biological phosphorus process by the use of instrumentation, control and automation to reduce the consumption of precipitants. Means to this end are first to calibrate a modified ASM2d model to a full-scale wastewater treatment plant (WWTP), including both biological and chemical phosphorus removal and a model of the sedimentation process. Second, based on the calibrated model a benchmark model is developed and various control strategies for biological phosphorus removal are tested. Experiences and knowledge gained from the strategies presented and discussed in this paper are vital inputs for the full-scale implementation of a control strategy for biological phosphorus removal at Avedøre WWTP, which is described in another paper. The two papers hence show a way to bridge the gap from model to full implementation.

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