A new method for characterizing denitrifying phosphorus removal bacteria by using three different types of electron acceptors

Hu, Jiangyong; Ong, Say Leong; Ng, Wun Jern; Lu, F.; Fan, Xin

doi:10.1016/s0043-1354(03)00205-7

Cited by 143 publications

(66 citation statements)

References 13 publications

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“…While satisfactory simultaneous NO3 removal and PO4 uptake has been observed in the anoxic stage of several EBPR systems (Vlekke et al, 1988;Kuba et al, 1993Kuba et al, , 1996Kuba et al, , 1997aKuba et al, , 1997bWachtmeister et al, 1997;Brdjanovic et al, 2000;Zeng et al, 2003b), limited or inconsistent simultaneous denitrification and PO4 uptake has been observed in other lab-and full-scale studies (KerrnJespersen and Henze, 1993;Hu et al, 2003;Carvalho et al, 2007;Lopez-Vazquez et al, 2008a). Actually, the discovery of the existence of two different Accumulibacter clades (known PAOs) seemed to have been encouraged by assessing the denitrifying capabilities of EBPR biomass (Flowers et al, 2008).…”

Section: Denitrification By Ebpr Culturesmentioning

confidence: 99%

Experimental Methods in Wastewater Treatment

Loosdrecht¹,

Nielsen²,

López-Vázquez³

et al. 2016

Water Intelligence Online

143

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PrefaceWastewater treatment is a core technology for water resources protection and reuse, as is clearly demonstrated by the great success of its consequent implementation in many countries worldwide. During the last decennia scientific research has made vast progress in understanding the complex and interdisciplinary aspects of the biological, biochemical, chemical and mechanical processes involved. It can be concluded that the global application of existing knowledge and experience in wastewater treatment technology will represent a cornerstone in future water management, as expressed in the Strategic Development Goals accepted by the UN in September 2015.Only about one fifth of the wastewater produced globally is currently being adequately treated. To achieve the goal for sustainable water management by 2030 would require extra wastewater treatment facilities for about 600,000 people each day. I am convinced that this book will make its own significant contribution to meeting this ambitious goal.In the near future, most of the global population will live in cities and in low and middle-income countries, where most wastewater is not adequately treated. Probably the most limiting factor in achieving the goals for sustainable water management is the lack of qualified, well-trained professionals, able to comprehend the scientific research results and transfer them into practice. It is therefore of prime importance to make currently available scientific advances and proven experiences in wastewater treatment technology applications easily accessible worldwide. This was one of the drivers for the development of this book, which represents an innovative contribution to help overcome such a capacity development challenge. The book is most definitely expected to contribute to bridging the gaps between the science and technology, and their practical applications.The great collection of authors and reviewers represents an interdisciplinary team of globally acknowledged experts. The book will therefore make a major contribution to establishing a common professional language, enhancing global communication between wastewater professionals. In addition, the authors have linked the description of the scientific basis for wastewater treatment processes with a video-based online course for the training of students, researchers, engineers, laboratory technicians and treatment plant operators, demonstrating commonly accepted experimentation procedures and their application for lab-, pilot-, and full-scale treatment plant operation.From the perspective of the IWA this book also has the great potential to enhance the development of a new generation of researchers and enable them to communicate on a global scale and beyond their specific field of expertise. Both aspects are urgently needed to develop adapted solutions for specific local conditions and to make them globally available for implementation.There has been a trend for some time that scientific research and practice have been growing apart from each other. Part of the rea...

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Section: Denitrification By Ebpr Culturesmentioning

confidence: 99%

Experimental Methods in Wastewater Treatment

Loosdrecht¹,

Nielsen²,

López-Vázquez³

et al. 2016

Water Intelligence Online

143

View full text Add to dashboard Cite

show abstract

“…Furthermore, the validation of the positive role of nitrate in phosphorus uptake under anoxic condition has been highlighted in literatures [13]- [15]. Conclusion that adequate amount of nitrate would ensure the phosphorus uptake performance had been verified [16]. However, it is necessary to investigate the relation of P-uptake rate and the concentration of nitrate.…”

Section: Introductionmentioning

confidence: 99%

Influence of Phosphorus Release and Initial Nitrate Concentration on Anoxic Phosphorus Uptake

Xu¹

2015

IJESD

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Abstract-Denitrifying phosphorus removal technology has advantage on beneficial for reduction of COD consumption, and the anoxic phosphorus uptake process is the key process. This study was to investigate the effect of the phosphorus release and initial nitrate concentration, which are two important infectors, on the anoxic phosphorus uptake process, by batch two Tests. The results show that the improvement of Prelease/MLSS would increase the amount of nitrogen and phosphorus removal as well as the specific phosphorus uptake rate(PUR),and the relationship between the amount of P release per MLSS was found in this paper. Nitrate would have little impact on the phosphorus uptake rate in anoxic condition if nitrate was adequate as the electron acceptor. Besides, a function formula was fitted to predict the amount of electron acceptor by the amount of P release per MLSS. I. INTRODUCTIONOver the last decades, the discovery of denitrification phosphate accumulating organisms (DPAO) has been extensively reported, These organisms, as conventional poly-P bacteria, could sequester organic substrates under anaerobic condition, Instead, they utilize nitrate or nitrite as electron acceptor to accumulate phosphate [1]- [7]. Moreover, it is widely recognized that both of denitrification and phosphorus release require organism substrates as electron donor, which is a bottle-neck in resent wastewater treatment plants, especially in China with low COD/N ratio. Thus applying DPAOs in the plants has integrated nitrogen and phosphorus removal for COD is utilized simultaneously, which is beneficial for reduction of COD consumption [8], lower aeration requirement [9], and less sludge production [10]. Although many literatures reported the variety of factors that affected anaerobic phosphorus release and organism uptake, such as MLSS , SRT [11], COD/N,COD/P [12], there are few implies that all the factors would have indirectly or directly impact on the P removal efficiency through P release. No matter what had influenced the anaerobic P release, the amount of phosphorus release could be expressed all the factors affecting P removal. Furthermore, the investigation of the amount of P release should eliminate the influence of MLSS on operation of the experiment, which promoted the concept of the amount of P release per MLSS (Prelease/MLSS). Hence in this study we focused on the investigation of the effect of Prelease/MLSS on the phosphate and nitrogen removal, which will benefit for further innovative processes investigation. Furthermore, the validation of the positive role of nitrate in phosphorus uptake under anoxic condition has been highlighted in literatures [13]- [15]. Conclusion that adequate amount of nitrate would ensure the phosphorus uptake performance had been verified [16]. However, it is necessary to investigate the relation of P-uptake rate and the concentration of nitrate. Most importantly, nitrate should be controlled in a range of value to validate its sufficient requirement as electron acceptor under anoxic condition in...

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“…Phosphorus can be removed by a biological process such as A2O (Anaerobic-Anoxic-Oxic Process), and many other particular processes. To raise phosphorus removal in wastewater treatment, advanced technologies have been investigated (Hu et al, 2003;Wu et al, 2010). Wu et al tried to find higher phosphorus removal technology using granular sludge (Wu et al, 2010), while Hu et al found that enriched nitrifying bacteria could remove phosphorus effectively (Hu et al, 2003).…”

Section: Introductionmentioning

confidence: 99%

“…To raise phosphorus removal in wastewater treatment, advanced technologies have been investigated (Hu et al, 2003;Wu et al, 2010). Wu et al tried to find higher phosphorus removal technology using granular sludge (Wu et al, 2010), while Hu et al found that enriched nitrifying bacteria could remove phosphorus effectively (Hu et al, 2003). On the other hand wetland was suggested for removing phosphorus from agricultural run-off which is a non-point source (Lu et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Phosphorus Removal in Wastewater Using Activated Ca-Loess Complex

Kang¹,

Lee²

2012

Journal of Korean Society of Water and Wastewater

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In many instances phosphorus is a limiting factor for eutrophication in streams, and lakes. Because wastewater treatment plant itself may be the main phosphorus source in a natural water body, removal of phosphorus in final effluent of wastewater treatment processes is required.Amongst various technologies for phosphorus removal in wastewater, adsorption technology was investigated using activated Ca-loess complex. Ca was added in loess to enhance adsorption capacity and intensity of phosphorus. Ca added loess was activated at a high temperature of 400 ℃ which turned out to be the optimum temperature. Activated Ca-loess complex below 400 ℃ had not enough strength to be applied as an activated Ca-loess pallet column in wastewater treatment process. Ca-loess complex which activated above 400 ℃ lost its adsorption capacity as the loess surface was glassified when the activation temperature reached above 400 ℃. Even if adsorption capacity of activated Ca-loess was not very high due to the lack of abundant pores on its surface, adsorption intensity was still high because it was activated with added Ca in loess.Activated loess was made by pallets. The activated loess pallets were filled in a column, and were applied in wastewater treatment process. Using an activated Ca-loess pallet column, total phosphorus (T-P) was reduced from about 0.5 mg/l to lower than 0.1 mg/l in wastewater treatment, and ionic phosphorus (phosphate) was completely removed for the four months of pilot plant operation.

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A new method for characterizing denitrifying phosphorus removal bacteria by using three different types of electron acceptors

Cited by 143 publications

References 13 publications

Experimental Methods in Wastewater Treatment

Experimental Methods in Wastewater Treatment

Influence of Phosphorus Release and Initial Nitrate Concentration on Anoxic Phosphorus Uptake

Phosphorus Removal in Wastewater Using Activated Ca-Loess Complex

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