Resource Recovery and Municipal Wastewater Treatment: A New Approach Combining Biological and Physical-Chemical Processes

Sutton, Paul M.; Wallis‐Lage, Cindy; Schraa, Oliver; Togna, Paul

doi:10.2175/193864709793955519

Cited by 2 publications

(4 citation statements)

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“…To-date, only steady-state modeling has been completed and modeling efforts have focused on the treatment steps upstream of the ZAR system. Further details regarding modeling are provided elsewhere (Schraa 2009;Sutton et al 2009b). The energy calculations include the ZAR system.…”

Section: Modeling and Model Resultsmentioning

confidence: 99%

“…Further details concerning application and modeling of the process system are provided elsewhere (Sutton et al 2009a). The underflow waste solids from the solid-liquid separation step receiving the backwash from the Fe based reactive filtration system (Figure 1), has the potential to represent a slow release, high P containing fertilizer product following dewatering and drying, as discussed elsewhere (Sutton et al 2009b).…”

Section: Nutrient Removal and Recoverymentioning

confidence: 99%

“…Despite the implied advantages of the new flowsheet relative to current conventional methods for achieving complete treatment of wastewater, there are a number of technical and economic hurdles which must be overcome in order for the new flowsheet to be viewed as an attractive alternative, as discussed elsewhere (Sutton et al 2009b). Important hurdles include the likely need for development of a more efficient membrane system for the low SRT aerobic MBR application, the need to verify model assumptions associated with the aerobic MBR and anaerobic digestion systems, and the need for field demonstration of the new flowsheet concept.…”

Section: Technical and Economic Hurdlesmentioning

confidence: 99%

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Treating municipal wastewater with the goal of resource recovery

Sutton¹,

Melcer

Schraa

et al. 2011

Water Science and Technology

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A new municipal wastewater treatment flowsheet was developed with the objectives of energy sustainability, and water and nutrient recovery. Energy is derived by shunting a large fraction of the organic carbon in the wastewater to an anaerobic digestion system. Aerobic and anaerobic membrane bioreactors play a key role in energy recovery. Phosphorus and nitrogen are removed from the wastewater and recovered through physical-chemical processes. Computer modeling and simulation results together with energy balance calculations, imply the new flowsheet will result in a dramatic reduction in energy usage at lower treatment plant capital costs in comparison to conventional methods.

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Section: Modeling and Model Resultsmentioning

confidence: 99%

Section: Nutrient Removal and Recoverymentioning

confidence: 99%

Section: Technical and Economic Hurdlesmentioning

confidence: 99%

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Treating municipal wastewater with the goal of resource recovery

Sutton¹,

Melcer

Schraa

et al. 2011

Water Science and Technology

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“…In countries with moderate climates, a more holistic approach to the wastewater flowsheet has been developed (Sato et al 2006) by integrating anaerobic pretreatment of the settled wastewater prior to aerobic biological treatment. Advantages of this flowsheet include additional production of biogas from solubilised organics, a reduction in aeration energy demand facilitated by the reduction in organic load and lower biological sludge yields (Lester et al 2009;Sutton et al 2009Sutton et al , 2010. However, the low organic substrate concentration within combined sewers and low domestic wastewater temperatures have been perceived as constraints for widespread implementation of anaerobic wastewater treatment.…”

Section: Introductionmentioning

confidence: 99%

Integrating anaerobic processes into wastewater treatment

McAdam

Lüffler

Martin-Garcia

et al. 2011

Water Science and Technology

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Over the past decade, the concept of anaerobic processes for the treatment of low temperature domestic wastewater has been introduced. This paper uses a developed wastewater flowsheet model and experimental data from several pilot scale studies to establish the impact of integrating anaerobic process into the wastewater flowsheet. The results demonstrate that, by integrating an expanded granular sludge blanket reactor to treat settled wastewater upstream of the activated sludge process, an immediate reduction in imported electricity of 62.5% may be achieved for a treated flow of c. 10,000 m(3) d(-1). This proposed modification to the flowsheet offers potential synergies with novel unit processes including physico-chemical ammonia removal and dissolved methane recovery. Incorporating either of these unit operations can potentially further improve the flowsheet net energy balance to between +0.037 and +0.078 kWh m(-3) of produced water. The impact of these secondary unit operations is significant as it is this contribution to the net energy balance that facilitates the shift from energy negative to energy positive wastewater treatment.

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Resource Recovery and Municipal Wastewater Treatment: A New Approach Combining Biological and Physical-Chemical Processes

Cited by 2 publications

References 0 publications

Treating municipal wastewater with the goal of resource recovery

Treating municipal wastewater with the goal of resource recovery

Integrating anaerobic processes into wastewater treatment

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