Co-digestion of sewage sludge and wood fly ash
| Autor: | Torben Bauer, Markku Pelkonen, Anders Lagerkvist |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
nutrient recycling
Nutrient cycle 0208 environmental biotechnology 02 engineering and technology 010501 environmental sciences Combustion Coal Ash 01 natural sciences Bioreactors Nutrient Anaerobic digestion Annan miljöbioteknik co-digestion Environmental Chemistry Anaerobiosis Waste Management and Disposal 0105 earth and related environmental sciences Water Science and Technology Sewage sewage sludge Sulfates Other Environmental Engineering Other Environmental Biotechnology ash General Medicine Pulp and paper industry Wood 020801 environmental engineering Fly ash Annan naturresursteknik Environmental science Digestion Co digestion Methane Sludge |
| Zdroj: | Environmental Technology. 43:1853-1859 |
| ISSN: | 1479-487X 0959-3330 |
| DOI: | 10.1080/09593330.2020.1856937 |
| Popis: | This study uses a new approach for the recycling of plant nutrients by co-digesting sewage sludgewith fly ash from a wood combustion. Sewage sludge and fly ash both are enriched with nutrientsof the wastewater resp. wood, which makes these products an enhanced source for recycledfertilizers. The effects of the ash addition to the anaerobic digestion are studied in several labscale experiments including effects on the gas production and microbial activity. Following that,the fertilizing qualities of the digestate are evaluated by plant growth experiments. The resultsshow that the fertilizing qualities of the digested sludge were improved by the ash addition.Next to this, gas production results show that the methane production was not affected by theash addition, while the total gas release was reduced. The sulphur addition by the ashstimulated sulphate reducing bacteria. The sulphate reducing bacteria did not markedly inhibitthe methanogens. Validerad;2022;Nivå 2;2022-05-06 (hanlid) |
| Databáze: | OpenAIRE |
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