The effect of fill mode on the performance of sequencing-batch reactors treating various wastewaters

Yu, Han‐Qing; Gu, G.; Song, Liang

doi:10.1016/s0960-8524(96)00101-0

Cited by 28 publications

(7 citation statements)

References 8 publications

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“…It might be the effect of nitrification-denitrification mechanism of SBR system. To reduce the effluent NO 3 − , the anoxic period of the SBR operation program had to be increased [3,8,26,30,33,34].…”

Section: Discussionmentioning

confidence: 99%

Biological removal of cyanide compounds from electroplating wastewater (EPWW) by sequencing batch reactor (SBR) system

Sirianuntapiboon

Chairattanawan

Rarunroeng

2008

Journal of Hazardous Materials

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Section: Discussionmentioning

confidence: 99%

Biological removal of cyanide compounds from electroplating wastewater (EPWW) by sequencing batch reactor (SBR) system

Sirianuntapiboon

Chairattanawan

Rarunroeng

2008

Journal of Hazardous Materials

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“…The nonaerated fill mode has shown better results at lower influent phenol concentration as it had no filamentous bacterial growth. But at higher phenol concentration, the aerated SBR proved successful as the nonaerated one accumulated phenol to concentration inhibitory to microorganisms 35. With effluent concentration from 100 to 1000 mg/L, the fill strategy (aerated or nonaerated) showed no effect on phenol degradation.…”

Section: Sbr: Different Modes Of Operationmentioning

confidence: 99%

Sequencing batch reactor technology for biological wastewater treatment: a review

Singh

Srivastava

2010

Asia-Pacific J Chem Eng

142

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Wastewater treatment has been a challenge throughout the years due to varying influent characteristics and stringent effluent regulations. In response to this dilemma, a reliable, cost-effective and high-efficiency sequencing batch reactor (SBR) technology has been recently developed. SBRs are variations of the activated sludge process that operates on a fill-and-draw basis. It combines both aerobic-anaerobic phases in one unit and saves up to 25% of the aeration costs concomitant with low sludge production. Consequently, simultaneous nitrogen and phosphorus removal from the wastewater could be achieved by adjusting the actual operating cycle. This review paper discusses the technical description and operational flexibility of SBR for the treatment of wide range of effluent under different operational conditions, together with its modifications that could increase the effectiveness of SBR systems in the future.

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“…The metabolites of anaerobic treatment may also be inhibitory to the methanogens themselves, resulting in declining anaerobic treatment efficiencies and adding to the load on the downstream aerobic treatment system. Intimate contact of aerobes with anaerobes may reduce the accumulation of toxic intermediates as the aerobes would achieve an in situ removal of these anaerobic metabolites [2][3][4][5] . Thus, the outlet water of the A 2 /O or A 2 /O 2 system treating coking wastewater usually contains about 350-700mg.L -1 COD, Which cannot meet the demand of the drainage by environmental protection.…”

Section: ⅰ Introductionmentioning

confidence: 99%

Notice of Retraction: Anaerobic and Microaerobic Operation for the EGSB Reactor Treating Actual Coking Wastewater

Chen¹,

Geng

Wang³

et al. 2010

2010 4th International Conference on Bioinformatics and Biomedical Engineering

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To determine if anaerobic microniches are created in granular sludge exposed to oxygen where the refractory organics reduction in coking wastewater could occur and to assay the feasibility of the highly efficiently and stable operation of the micro-aerobic EGSB reactor for simultaneous removal of COD and NH 3 -N treating actual coking wastewater at 25-30℃, both anaerobic and microaerobic operations of the EGSB reactor were considered. And the granular characteristic of activity, settling, and size was also investigated in this paper. By controlling the oxygenation rate in the aeration column, different concentrations of dissolved O 2 were generated in the circulating fluid which supplied dissolved O 2 to the granule sludge bed in the EGSB reactor and to generate micro-aerobic environments. The results showed that, at 25-30℃, treating actual coking wastewater with 1280-2024mg⋅L -1 COD concentration, 50-112mg⋅L -1 NH 3 -N concentration, the anaerobic EGSB reactor could only have 40.1%, 56.7% average COD removal efficiencies and 8.3% average NH 3 -N removal efficiencies (the negative NH 3 -N removal was usually appeared and even low to -77.8%) with 1.3L. -1 , 0.6L -1 influent flow and 9.2h, 20h HRT, respectively. But the microaerobic EGSB reactor could have average COD and NH 3 -N removal efficiencies of 83.0% and 67.1%, respectively. Supplement dose of Oxygen for the microaerobic EGSB reactor was controlled by redox potential (ORP), and the ORP in the inlet of the micro-aerobic EGSB reactor should be kept at about +35mV. Oxygenation could shift the population distribution to smaller or larger particles compared to the anaerobic EGSB reactor and decreased the settled velocity of the granules (low to 12m.h -1 ), but without any sludge washout. And the micro-aerobic EGSB reactor could keep about 38.0gMLSS.L -1 sludge concentration and 0.65 MLVSS/MLSS. The methanogenic activity of the granular sludge in the micro-aerobic was not decreased, and even higher than in the strictly anaerobic EGSB reactor.

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The effect of fill mode on the performance of sequencing-batch reactors treating various wastewaters

Cited by 28 publications

References 8 publications

Biological removal of cyanide compounds from electroplating wastewater (EPWW) by sequencing batch reactor (SBR) system

Biological removal of cyanide compounds from electroplating wastewater (EPWW) by sequencing batch reactor (SBR) system

Sequencing batch reactor technology for biological wastewater treatment: a review

Notice of Retraction: Anaerobic and Microaerobic Operation for the EGSB Reactor Treating Actual Coking Wastewater

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