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Primary filtration ...
Primary filtration of municipal wastewater with sludge fermentation – Impacts on biological nutrient removal
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- Ossiansson, Elin, 1983 (författare)
- Chalmers University of Technology,Chalmers tekniska högskola
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- Bengtsson, Simon (författare)
- VA Syd,VA SYD
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- Persson, Frank, 1970 (författare)
- Chalmers University of Technology,Chalmers tekniska högskola
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- Cimbritz, Michael (författare)
- Lund University,Lunds universitet,Avdelningen för kemiteknik,Institutionen för processteknik och tillämpad biovetenskap,Institutioner vid LTH,Lunds Tekniska Högskola,LTH profilområde: Vatten,LTH profilområden,Division of Chemical Engineering,Department of Process and Life Science Engineering,Departments at LTH,Faculty of Engineering, LTH,LTH Profile Area: Water,LTH Profile areas,Faculty of Engineering, LTH
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- Gustavsson, David J.I. (författare)
- VA Syd,Sweden Water Research AB,VA SYD
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(creator_code:org_t)
- 2023
- 2023
- Engelska.
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Ingår i: Science of the Total Environment. - 0048-9697 .- 1879-1026. ; 902
- Relaterad länk:
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http://dx.doi.org/10... (free)
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https://research.cha... (primary) (free)
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https://lup.lub.lu.s...
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https://doi.org/10.1...
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https://research.cha...
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Abstract
Ämnesord
Stäng
- Primary filtration is a compact pre-treatment process for municipal wastewater, which can lead to high removal of total suspended solids (TSS) if polymer is added prior to filtration. Extensive carbon removal with rotating belt filter (RBF) can be combined with filter primary sludge fermentation at ambient temperature, in order to produce volatile fatty acids (VFAs) as carbon source for biological nutrient removal (BNR). This process was implemented at large pilot-scale and operated for more than a year. The results showed that the RBF efficiently removed particles >10 μm, and that the TSS removal had a strong linear correlation to the influent TSS concentration. Fermentation of the sludge at ambient temperature and five days retention time and addition of the fermentate to the wastewater could nearly double the VFA concentration in the wastewater by adding 31 ± 9 mg VFA-COD/L. Meanwhile, an increase of 2 mg/L of ammonium nitrogen, and 0.7 mg /L of phosphate phosphorus would be added to the wastewater with the fermentate. Adding the fermented sludge to the wastewater stream and removing the particles with RBF makes it possible to utilize nearly all the produced VFAs for BNR, and the feasibility of this configuration was shown at pilot-scale. According to simulations of subsequent BNR, the pre-treatment would lead to lower effluent total nitrogen concentrations. Alternatively, the required BNR volume could be reduced by 11–18 %. The estimated total biogas production was similar for pre-treatment with primary settler and RBF with fermentation. RBF without fermentation gave the most favourable energy balance, but did not reach the same low effluent value for total nitrogen as RBF with fermentation.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Miljöbioteknik -- Vattenbehandling (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Environmental Biotechnology -- Water Treatment (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Samhällsbyggnadsteknik -- Vattenteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Civil Engineering -- Water Engineering (hsv//eng)
- NATURVETENSKAP -- Kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences (hsv//eng)
Nyckelord
- Benchmark simulation model no 1
- Energy balance
- Fermentation
- Hydrolysis
- Primary sludge
- Rotating belt filter
- Benchmark simulation model no 1FermentationHydrolysisEnergy balancePrimary sludgeRotating belt filter
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
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