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Maximering av slam och biogasproduktion för att motverka global uppvärmning
KTH, School of Architecture and the Built Environment (ABE), Land and Water Resources Engineering (moved 20130630), Water, Sewage and Waste technology.ORCID iD: 0000-0002-6786-0342
2010 (Swedish)In: Vatten, ISSN 0042-2886, Vol. 66, no 1, 67-73 p.Article in journal (Other academic) Published
Abstract [en]

Can wastewater treatment contribute to counteract global warming? Increased biogas production for substitutingfossil fuel is one possibility. However, an active sludge process with biological nitrogen and phosphorus removalconsume organic material, gives a sludge with less digestibility and need energy for aeration. The amountof produced sludge corresponds to half of the organic material in the sewage water. If the degree of digestion is40 % it means that 20 % of the organic content have been transformed to biogas. Anaerobic digestion of thesewage water can give 60 to 80 % conversion of organic material in the sewage water to biogas and thereby 3 to4 times larger biogas production. However, if maximum amount of the carbon source is used for biogas productionthere will be no carbon source for biological nutrient removal. Therefore new methods for nutrient removalwithout carbon source has to be developed, for which struvite precipitation and can anammox be used. Thepilot plant Hammarby Sjöstadsverk is a unique resource owned by KTH and IVL Swedish EnvironmentalInstitute,which can be used for these studies. Also the possibility to use sewage sludge to counteract globalwarming by recycling carbon to deep see sediments should be studied.

Place, publisher, year, edition, pages
2010. Vol. 66, no 1, 67-73 p.
Keyword [en]
Anammox, digesion, biogas, energy recovery, pilot plant Hammarby Sjöstadsverk, global warming, nutrient removal, phosphorus recovery, struvite, sewage sludge
National Category
Water Engineering
Identifiers
URN: urn:nbn:se:kth:diva-81603OAI: oai:DiVA.org:kth-81603DiVA: diva2:497660
Note

QC 20120419

Available from: 2012-02-10 Created: 2012-02-10 Last updated: 2017-12-07Bibliographically approved

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http://www.tidskriftenvatten.se/download.asp?type=article&ID=4199

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CiteExportLink to record
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