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Anaerobic co-digestion of sludge with orther organic wastes and phosphorous reclamation in BNR wastewater treatment plants

Anaerobic co-digestion of sludge with orther organic wastes and phosphorous reclamation in BNR wastewater treatment plants
Anaerobic co-digestion of sludge with orther organic wastes and phosphorous reclamation in BNR wastewater treatment plants
This paper deals with the performances obtained in full scale anaerobic digesters co-digesting waste activated sludge from biological nutrients removal wastewater treatment plants, together with different types of organic wastes (solid and liquid). Results showed that the biogas production can be increased from 4,000 to some 18,000 m3 per month when treating some 3–5 tons per day of organic municipal solid waste together with waste activated sludge. On the other hand, the specific biogas production was improved, passing from 0.3 to 0.5 m3 per kgVS fed the reactor, when treating liquid effluents from cheese factories. The addition of the co-substrates gave minimal increases in the organic loading rate while the hydraulic retention time remained constant. Further, the potentiality of the struvite crystallisation process for treating anaerobic supernatant rich in nitrogen and phosphorus was studied: 80% removal of phosphorus was observed in all the tested conditions. In conclusion, a possible layout is proposed for designing or up-grading wastewater treatment plants for biological nutrients removal process.

0273-1223
177-186
Bolzonella, D
554b33d4-ce6f-4d05-93ac-fcc5d49187f3
Pavan, P
751d1ae9-f461-4af4-9781-66c9df174a3d
Battistoni, P
05bd4392-6721-4365-a826-df1171a4a74a
Cecchi, F
97cd0131-4631-48fe-8242-c9b9fb04b0ad
Bolzonella, D
554b33d4-ce6f-4d05-93ac-fcc5d49187f3
Pavan, P
751d1ae9-f461-4af4-9781-66c9df174a3d
Battistoni, P
05bd4392-6721-4365-a826-df1171a4a74a
Cecchi, F
97cd0131-4631-48fe-8242-c9b9fb04b0ad

Bolzonella, D, Pavan, P, Battistoni, P and Cecchi, F (2006) Anaerobic co-digestion of sludge with orther organic wastes and phosphorous reclamation in BNR wastewater treatment plants. Water Science & Technology, 53 (12), 177-186.

Record type: Article

Abstract

This paper deals with the performances obtained in full scale anaerobic digesters co-digesting waste activated sludge from biological nutrients removal wastewater treatment plants, together with different types of organic wastes (solid and liquid). Results showed that the biogas production can be increased from 4,000 to some 18,000 m3 per month when treating some 3–5 tons per day of organic municipal solid waste together with waste activated sludge. On the other hand, the specific biogas production was improved, passing from 0.3 to 0.5 m3 per kgVS fed the reactor, when treating liquid effluents from cheese factories. The addition of the co-substrates gave minimal increases in the organic loading rate while the hydraulic retention time remained constant. Further, the potentiality of the struvite crystallisation process for treating anaerobic supernatant rich in nitrogen and phosphorus was studied: 80% removal of phosphorus was observed in all the tested conditions. In conclusion, a possible layout is proposed for designing or up-grading wastewater treatment plants for biological nutrients removal process.

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Published date: 2006

Identifiers

Local EPrints ID: 189053
URI: http://eprints.soton.ac.uk/id/eprint/189053
ISSN: 0273-1223
PURE UUID: 6fd2ff24-9d9b-4f3d-8b14-e06b0de0b27d

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Date deposited: 31 May 2011 14:27
Last modified: 22 Jul 2022 17:43

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Contributors

Author: D Bolzonella
Author: P Pavan
Author: P Battistoni
Author: F Cecchi

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