A pilot scale study on high biomass systems: Energy and cost analysis of sludge production

Özdemir, Burcu; Yenigün, Orhan

doi:10.1016/j.memsci.2012.11.010

Cited by 16 publications

(4 citation statements)

References 26 publications

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“…Gillot and Héduit (2008) considered inversely related to the MLSS concentrations in the reactor (Boogerd et al, 1990;Freitas and Teixeira, 2001;Henkel et al, 2011;Ju and Sundararajan, 1994;Krampe and Krauth, 2003;Muller et al, 1995;Ozdemir and Yenigun, 2013). To represent this phenomenon, different authors have proposed relations between MLSS concentration and the a-factor.…”

Section: Factors Affecting Oxygen Transfer Efficiencymentioning

confidence: 99%

A Critical Review of the Factors Affecting Modeling Oxygen Transfer by Fine‐Pore Diffusers in Activated Sludge

Baquero-Rodríguez

Lara-Borrero

Nolasco

et al. 2018

Water Environment Research

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In this review, the factors affecting the transfer of oxygen in activated sludge processes using fine-pore diffusers for water resource recovery are critically discussed. In water resource recovery facilities, the energy required for aeration constitutes 50% to 80% of the total energy consumed by the plant. This critical review highlights the use of fine-pore diffuser aeration and emphasizes the significance of accounting for the following factors: diffuser aging and fouling, diffuser layout, diffuser type, selector benefits, local environmental conditions (temperature and atmospheric pressure), influent wastewater variability, dissolved oxygen control systems, and airflow rates. In our review, we were unable to find mathematical models that could be used to develop dynamic α-factor predictions and diffuser fouling predictions. Although the development of a model that considers all the factors that affect oxygen transfer efficiency (OTE) in activated sludge systems would be extremely valuable, the creation of such a model is outside the scope of this review.

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Section: Factors Affecting Oxygen Transfer Efficiencymentioning

confidence: 99%

A Critical Review of the Factors Affecting Modeling Oxygen Transfer by Fine‐Pore Diffusers in Activated Sludge

Baquero-Rodríguez

Lara-Borrero

Nolasco

et al. 2018

Water Environment Research

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“…In addition, the sludge discharge interval is one of the main running conditions, which is also crucial to UF membrane fouling (Ozdemir and Yenigun, 2013). It has been reported that sludge discharge could benefit different reversible and irreversible fouling behaviors because of the various compositions of retentate solution in the membrane tank (Bai et al, 2013;Yu et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Enhanced antimony(V) removal using synergistic effects of Fe hydrolytic flocs and ultrafiltration membrane with sludge discharge evaluation

Wang

Liu

et al. 2017

Water Research

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a b s t r a c tThe integration of adsorbents with ultrafiltration (UF) membranes is a promising method for alleviating membrane fouling and reducing land use. However, a number of problems have become apparent concerning the granular adsorbents used currently, such as high running cost, high chance of causing membrane surface damage, low in situ chemical cleaning efficiency, etc. Herein, to overcome these disadvantages, loose in situ hydrolyzed flocs were directly injected into the membrane tank, providing strong adsorption ability at low cost. To test the feasibility of this method, the heavy metal pollutant antimony (Sb (V)) in a water plant was chosen at a test case, which is similar to arsenic and difficult to remove. We found that Fe-based flocs integrated with an UF membrane showed a large potential advantage in removing Sb(V), even after running for 110 days. We demonstrated that the observed slow transmembrane pressure development could be ascribed to the loose floc cake layer formed, even though some extracellular polymeric substances were induced during operation. We also found that the floc cake layer was easily removed by washing with feed water or dissolved by in situ chemical cleaning under strongly acidic conditions, and many primary membrane pores were clearly observed. In addition, a relative long sludge discharge interval was feasible for this technology and the effluent quality was good, including the turbidity, chromaticity and iron concentration. Based on the excellent performance, these flocs integrated with UF membranes indeed show potential for application in water treatment.

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“…Sewage sludge management is a well-known key point in the operation of biological WasteWater Treatment Plants (WWTPs): in effect, sludge treatment and disposal often account for one half of the plant's operating cost Saveyn et al 2008;Ruiz-Hernando et al 2010;Ozdemir & Yenigun, 2013), so that wastewater treatment processes may convert a water pollution control problem into a solid waste disposal problem (Weemaes & Verstraete, 1998). Several EU research funding programs have been issued in this field during the last decade: among the latest, ROUTES (Novel processing routes for effective sewage sludge management) and END-O-SLUDG (Wastewater transformed for good) projects can be mentioned within the Seventh Framework Programme.…”

Section: Introductionmentioning

confidence: 99%

Sewage Treatment Plants

2015

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A pilot scale study on high biomass systems: Energy and cost analysis of sludge production

Cited by 16 publications

References 26 publications

A Critical Review of the Factors Affecting Modeling Oxygen Transfer by Fine‐Pore Diffusers in Activated Sludge

A Critical Review of the Factors Affecting Modeling Oxygen Transfer by Fine‐Pore Diffusers in Activated Sludge

Enhanced antimony(V) removal using synergistic effects of Fe hydrolytic flocs and ultrafiltration membrane with sludge discharge evaluation

Sewage Treatment Plants

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