Stability of Aerobic Granular Biomass Treating the Effluent from A Seafood Industry
The aerobic granular systems represent a good alternative to substitute the conventional activated sludge process in the treatment of industrial effluents due to the lower surface requirements. In this work the effluent from a seafood industry, characterized by a high variability and the presence of...
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Published in | International Journal of Environmental Research Vol. 7; no. 2; pp. 265 - 276 |
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Main Authors | , , , , |
Format | Journal Article |
Language | English |
Published |
2013
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Abstract | The aerobic granular systems represent a good alternative to substitute the conventional activated sludge process in the treatment of industrial effluents due to the lower surface requirements. In this work the effluent from a seafood industry, characterized by a high variability and the presence of residual amounts of coagulant and flocculant reagents, was used to study the development of aerobic granular biomass and its stability. In a first stage with OLRs between 2 and 5 kg COD sub(s)/m super(3.)d the development of aerobic granular biomass was promoted with good physical properties: SVI of 35 mL/g TSS, density of 60 g VSS/L sub(granule) and average diameter of 2.8 mm. In a second stage the continuous change in the OLR applied from 3 to 13 kg COD sub(s)/m super(3.)d, to simulate the real conditions of the industry, showed that the removal of organic matter was not affected (90%) but the aerobic granules disintegrated. The maximum OLR treated in the system without granules disintegration was around 4.4 kg COD sub(s)/m super(3.)d. The nitrogen removal was 30% (for biomass assimilation) and the maximum ammonia removal was around 65% and depending on the solids retention time, the free ammonia concentration and the average granule diameter. |
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AbstractList | The aerobic granular systems represent a good alternative to substitute the conventional activated sludge process in the treatment of industrial effluents due to the lower surface requirements. In this work the effluent from a seafood industry, characterized by a high variability and the presence of residual amounts of coagulant and flocculant reagents, was used to study the development of aerobic granular biomass and its stability. In a first stage with OLRs between 2 and 5 kg COD sub(s)/m super(3.)d the development of aerobic granular biomass was promoted with good physical properties: SVI of 35 mL/g TSS, density of 60 g VSS/L sub(granule) and average diameter of 2.8 mm. In a second stage the continuous change in the OLR applied from 3 to 13 kg COD sub(s)/m super(3.)d, to simulate the real conditions of the industry, showed that the removal of organic matter was not affected (90%) but the aerobic granules disintegrated. The maximum OLR treated in the system without granules disintegration was around 4.4 kg COD sub(s)/m super(3.)d. The nitrogen removal was 30% (for biomass assimilation) and the maximum ammonia removal was around 65% and depending on the solids retention time, the free ammonia concentration and the average granule diameter. |
Author | Figueroa, M Val del Rio, A Mosquera-Corral, A Mendez, R Campos, J L |
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Title | Stability of Aerobic Granular Biomass Treating the Effluent from A Seafood Industry |
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