The Impact of Aluminium Salt Dosing for Chemical Phosphorus Removal on the Settleability of Activated Sludge
Abstract
:1. Introduction
2. Materials and Methods
2.1. Materials
2.2. Jar Tests Protocol
2.3. Scanning Electron Microscope
3. Results and Discussion
3.1. Effects of Aluminium Dosing on Activated Sludge Morphology
3.2. Effects of Aluminium Dosing on ZSV and SSVI
4. Conclusions
Author Contributions
Funding
Acknowledgments
Conflicts of Interest
References
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Parameter | Control | Dosing Concentration (mg/L) | |||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Alum Dosed | |||||||||||
0 | 10 | 20 | 30 | 40 | 50 | 80 | 100 | 150 | 200 | 250 | |
Mean ZSV (m/h) | 1.49 | 1.59 | 1.71 | 1.84 | 2 | 2.11 | 2.12 | 2.06 | 1.52 | 1.43 | 1.33 |
Mean SSVI (mL/g) | 87.43 | 80.8 | 73.41 | 68.8 | 63.24 | 58.36 | 58.55 | 69.24 | 80.78 | 100.1 | 105.5 |
Mean X (g/L) | 2.52 | 2.65 | 2.73 | 2.8 | 2.86 | 2.92 | 2.99 | 3.09 | 3.3 | 3.55 | 3.76 |
SD ZSV (m/h) | 0.13 | 0.11 | 0.08 | 0.12 | 0.19 | 0.28 | 0.12 | 0.36 | 0.23 | 0.06 | 0.15 |
SD SSVI (mL/g) | 32.95 | 29.01 | 27.04 | 24.02 | 21.95 | 19.4 | 22.33 | 23.74 | 24.1 | 14.64 | 15.5 |
SD X (g/L) | 0.25 | 0.17 | 0.17 | 0.16 | 0.2 | 0.19 | 0.13 | 0.19 | 0.19 | 0.18 | 0.16 |
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Ojo, P.; Ifelebuegu, A.O. The Impact of Aluminium Salt Dosing for Chemical Phosphorus Removal on the Settleability of Activated Sludge. Environments 2018, 5, 88. https://doi.org/10.3390/environments5080088
Ojo P, Ifelebuegu AO. The Impact of Aluminium Salt Dosing for Chemical Phosphorus Removal on the Settleability of Activated Sludge. Environments. 2018; 5(8):88. https://doi.org/10.3390/environments5080088
Chicago/Turabian StyleOjo, Peter, and Augustine O. Ifelebuegu. 2018. "The Impact of Aluminium Salt Dosing for Chemical Phosphorus Removal on the Settleability of Activated Sludge" Environments 5, no. 8: 88. https://doi.org/10.3390/environments5080088