Improving anoxic/aerobic nutrients removal by the enhanced biological phosphorus removal-sulfur autotrophic denitrification (EBPR-SAD) system when treating low C/N ratio municipal wastewater

2017 ◽  
Vol 95 ◽  
pp. 247-261 ◽  
Author(s):  
Haibo Li ◽  
Beihai Zhou ◽  
Zhiyong Tian ◽  
Jianbo Guo ◽  
Huu Hao Ngo ◽  
...  
Keyword(s):  
Phosphorus Removal ◽  
Municipal Wastewater ◽  
Autotrophic Denitrification ◽  
Nutrients Removal ◽  
Enhanced Biological Phosphorus Removal ◽  
Biological Phosphorus Removal ◽  
Biological Phosphorus

The EAWAG Bio-P module for activated sludge model No. 3

2002 ◽  
Vol 45 (6) ◽  
pp. 61-76 ◽  
Author(s):  
H. Siegrist ◽  
L. Rieger ◽  
G. Koch ◽  
M. Kühnl ◽  
W. Gujer
Keyword(s):  
Experimental Data ◽  
Phosphorus Removal ◽  
Pilot Plant ◽  
Municipal Wastewater ◽  
Endogenous Respiration ◽  
Enhanced Biological Phosphorus Removal ◽  
Biological Phosphorus Removal ◽  
Batch Experiments ◽  
Standard Parameter ◽  
Biological Phosphorus

An additional module for the prediction of enhanced biological phosphorus removal is presented on the basis of a calibrated version of ASM3. The module uses modified processes from ASM2d but neglects the fermentation of readily degradable substrate. Biomass decay is modeled in the form of endogenous respiration as in ASM3. The glycogen pool and biologically induced P-precipitation is not taken into account. The module was systematically calibrated with experimental data from various batch experiments, a full-scale WWTP and a pilot plant treating Swiss municipal wastewater. A standard parameter set allowed all data to be simulated.

Experience with phosphorus removal and sludge handling and disposal in Flanders

2005 ◽  
Vol 52 (4) ◽  
pp. 19-25
Author(s):  
D. Bixio ◽  
I. Boonen ◽  
C. Thoeye ◽  
G. De Gueldre
Keyword(s):  
Phosphorus Removal ◽  
Municipal Wastewater ◽  
Wastewater Treatment Plants ◽  
Municipal Wastewater Treatment ◽  
Enhanced Biological Phosphorus Removal ◽  
Biological Phosphorus Removal ◽  
Key Factor ◽  
Municipal Wastewater Treatment Plants ◽  
The Impact ◽  
Biological Phosphorus

The way excess sludge must be disposed of is a key factor in the choice of the appropriate phosphorus removal technique at municipal wastewater treatment plants. In Europe the ongoing trend of tightening the sludge spreading rules called for a serious reduction of its agricultural utilisation and the expansion of the (co-)incineration disposal route, which led to a shift towards more sophisticated sludge handling techniques. This paper illustrates the impact of different sludge handling techniques on the performance of chemical and enhanced biological phosphorus removal at municipal WWTPs. The main conclusion is that although enhanced biological phosphorus removal is particularly sensitive to the problem of return liquors from sludge treatment processes indirect dewatering and anaerobic stabilisation cannot be discarded altogether when considering its implementation.

scholarly journals Global warming readiness: Feasibility of enhanced biological phosphorus removal from wastewater at 35°C

2021 ◽  
Author(s):  
Guanglei Qiu ◽  
Yingyu Law ◽  
Rogelio Zuniga-Montanez ◽  
Yang Lu ◽  
Samarpita Roy ◽  
...  
Keyword(s):  
Phosphorus Removal ◽  
Municipal Wastewater ◽  
Feeding Strategy ◽  
Full Scale ◽  
Carbon Uptake ◽  
Rrna Gene ◽  
Enhanced Biological Phosphorus Removal ◽  
Biological Phosphorus Removal ◽  
Biological Phosphorus ◽  
P Removal

AbstractRecent research has shown enhanced biological phosphorus removal (EBPR) from municipal wastewater at warmer temperatures around 30°C to be stable in both laboratory-scale reactors and full-scale treatment plants. In the context of a changing climate, the feasibility of EBPR at even higher temperatures is of interest. We operated two lab-scale EBPR sequencing batch reactors with alternating anaerobic and aerobic phases for over 300 days at 30°C and 35°C, respectively, and followed the dynamics of the communities of phosphorus accumulating organisms (PAOs) and competing glycogen accumulating organisms (GAOs) using a combination of 16S rRNA gene metabarcoding, quantitative PCR and fluorescent in-situ hybridization analyses. Stable and nearly complete P removal was achieved at 30°C; similarly, long term P removal was stable at 35°C with effluent PO43−-P concentrations < 0.5 mg/L on half of all monitored days. Diverse and abundant Ca. Accumulibacter amplicon sequence variants were closely related to those found in temperate environments, suggesting that EBPR at this temperature does not require a highly specialized PAO community. The slow-feeding strategy used effectively limited the carbon uptake rates of GAOs, allowing PAOs to outcompete GAOs at both temperatures. Candidatus Competibacter was the main GAO, along with cluster III Defluviicoccus members. These organisms withstood the slow-feeding regime, suggesting that their bioenergetic characteristics of carbon uptake differ from those of their tetrad-forming relatives. This specific lineage of GAOs warrants further study to establish how complete P removal can be maintained. Comparative cycle studies at two temperatures for each reactor revealed higher activity of Ca. Accumulibacter when the temperature was increased from 30°C to 35°C, suggesting that the stress was a result of the higher carbon (and/or P) metabolic rates of PAOs and GAOs, the resultant carbon deficiency, and additional community competition. An increase in the TOC to PO43--P ratio (from 25:1 to 40:1) effectively eased the carbon deficiency and benefited the proliferation of PAOs. In general, the slow-feeding strategy and sufficiently high carbon input benefited a high and stable EBPR at elevated temperature and represent basic conditions for full-scale applications.

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