The elemental compositions of P-accumulating microbial granules developed in sequencing batch reactors

Liu, Yu; Lin, Yuemei; Tay, Joo‐Hwa

doi:10.1016/j.procbio.2005.03.002

Cited by 27 publications

(7 citation statements)

References 16 publications

(20 reference statements)

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“…Based on Table 3.1, the ratio of VSS/SS increased from 75% to 84% as C content increased in anammox granules, in agreement with Liu et al (2005) who found a positive corelation between C content and the VS/TS ratio of P-accumulating microbial granules.…”

Section: Characteristics Of the Anammox Granulessupporting

confidence: 86%

Nitrogen removal by combined nitritation-anammox process in an upflow anaerobic sludge blanket (UASB) reactor

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Section: Characteristics Of the Anammox Granulessupporting

confidence: 86%

Nitrogen removal by combined nitritation-anammox process in an upflow anaerobic sludge blanket (UASB) reactor

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“…Furthermore Schonborn et al (2001), Liu et al (2005) and Barat et al (2006) suggested that high calcium concentrations produce "inert" Ca-stabilized poly-P which seemed very stable when anaerobic and aerobic/anoxic conditions were alternated and which was unavailable for phosphorus exchange. Moreover, Barat et al (2006) proposed an equation to correlate calcium concentration (between 10 and 95 mg Ca/L) and the ratio between phosphate release and acetate uptake.…”

Section: Discussionmentioning

confidence: 99%

Inhibition of biological phosphorus removal in a sequencing moving bed biofilm reactor in seawater

Vallet

Labelle

Rieger

et al. 2009

Water Science and Technology

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A new process was developed to achieve denitrifying biological phosphorus removal in wastewaters containing high levels of nitrate and phosphate with a low level of organic matter. This could particularly be useful in recirculating systems such as aquariums or fish farms to prevent accumulation of nitrate and phosphates and to avoid regular cost extensive and polluting water replacement. Phosphorus (P) was removed from the influent in a sequencing moving bed biofilm reactor, stored in the attached biomass and then cyclically removed from the biomass by filling the reactor with anaerobic water from a stock tank. Phosphate was accumulated in the stock tank which allowed for use as fertilizer. The feasibility of the experimental design was demonstrated by using the activated sludge model No. 3 (ASM3) complemented by the EAWAG Bio-P module implemented in the WEST simulation software. A pilot scale experiment was conducted in two identical reactors in two runs: one to treat water from a marine mesocosm, the other to treat a synthetic freshwater influent. No biological phosphorus removal was achieved during the seawater run. During the freshwater run, average P removal efficiency was 20%, of which 80% was attributed to biological removal and 20% to chemical precipitation. The absence of efficiency in seawater was attributed to the high concentration of calcium.

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“…In recent years, SEM-EDX has been applied to investigate the roles of various elements in activated sludge flocs settleability (Liu et al, 2005). In this study, it was used to detect the relative content of phosphorus in dry activated sludge so as to determine f p .…”

Section: The Relative Content Of Phosphorus In Dry Activated Sludgementioning

confidence: 99%

Effect of Long Sludge Retention Time on Biological Phosphorus Removal in A2/O Process

CHANGWEN¹,

Li²,

BAIHANG³

et al. 2015

JRST

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Sludge retention time is an important parameter to the biological phosphorus removal system. This paper investigated the effect of long sludge retention time on biological phosphorus removal in Anaerobic/Anoxic/Aerobic process (A2/O). The results showed that prolonging sludge retention time (SRT) of the A 2 /O system had no significant impact on biological phosphorus removal efficiency, which slightly decreased from 92.9% (at an SRT of 12 d) to 92.1% (at an SRT of 30 d). Scanning Electron MicroscopeEnergy Dispersive Spectrometer (SEM-EDS) analysis demonstrated the relative content of phosphorus in dry activated sludge increased from 2.27% to 4.36%, which explained the excellent phosphorus removal performance at long SRT. At the same time, the average particle size increased from 201.57 μm to 256.99 μm, and the flocs at longer SRT had a more spherical and compact structure relative to that at shorter SRT. Our results demonstrated that long SRT was a sustainable way for biological phosphorus removal in A 2 /O process.

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The elemental compositions of P-accumulating microbial granules developed in sequencing batch reactors

Cited by 27 publications

References 16 publications

Nitrogen removal by combined nitritation-anammox process in an upflow anaerobic sludge blanket (UASB) reactor

Nitrogen removal by combined nitritation-anammox process in an upflow anaerobic sludge blanket (UASB) reactor

Inhibition of biological phosphorus removal in a sequencing moving bed biofilm reactor in seawater

Effect of Long Sludge Retention Time on Biological Phosphorus Removal in A2/O Process

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