Drastic reduction of sludge in wastewater treatment plants : co-digestion of sewage sludge and aqueous waste in a thermophilic membrane reactor

Sewage sludge and aqueous wastes are usually treated in separate facilities. Both may pose specific issues, mainly related to the uncertainty of the recovery/disposal route and costs, for the sludge, and to the extremely variable quantitative and qualitative properties, for the aqueous waste. In the...

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Veröffentlicht in:Environmental technology. - 1993. - 41(2020), 19 vom: 05. Aug., Seite 2554-2563
1. Verfasser: Collivignarelli, Maria Cristina (VerfasserIn)
Weitere Verfasser: Abbà, Alessandro, Bertanza, Giorgio, Frattarola, Andrea
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2020
Zugriff auf das übergeordnete Werk:Environmental technology
Schlagworte:Journal Article Low sludge production TAMR alternate aeration aqueous waste resource recovery Sewage Waste Water Phosphorus 27YLU75U4W
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245 1 0 |a Drastic reduction of sludge in wastewater treatment plants  |b co-digestion of sewage sludge and aqueous waste in a thermophilic membrane reactor 
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520 |a Sewage sludge and aqueous wastes are usually treated in separate facilities. Both may pose specific issues, mainly related to the uncertainty of the recovery/disposal route and costs, for the sludge, and to the extremely variable quantitative and qualitative properties, for the aqueous waste. In the present work, the co-digestion of thickened sludge and aqueous wastes in a Thermophilic Aerobic Membrane Reactor (TAMR) was studied in order to allow the almost complete reduction of sludge directly in wastewater treatment plants (WWTPs). Different conditions (aerobic and alternate aeration) were tested in a pilot plant, at the semi-industrial scale. The TAMR plant was operated at 48°C with constant organic load rate (5 kgCOD m-3 d-1) and hydraulic retention time (5 days). The main results obtained are the following: (I) high overall COD (78-97%) and total phosphorus (>60%) removal rate under both the studied aeration conditions; (II) increase of ammonia concentration due to the effective ammonification of organic nitrogen; (III) low specific sludge production (0.04[Formula: see text]) in the thermophilic reactor 
650 4 |a Journal Article 
650 4 |a Low sludge production 
650 4 |a TAMR 
650 4 |a alternate aeration 
650 4 |a aqueous waste 
650 4 |a resource recovery 
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700 1 |a Abbà, Alessandro  |e verfasserin  |4 aut 
700 1 |a Bertanza, Giorgio  |e verfasserin  |4 aut 
700 1 |a Frattarola, Andrea  |e verfasserin  |4 aut 
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