Impact of Temperature and Coagulants on Sludge Dewaterability
Temperature and coagulant types have an important impact on the quantity and quality of the residue (sludge) in water and wastewater treatment processes. Temperature influences water viscosity and the distribution of the coagulant in water. Coagulants can promote the agglomeration of fine partic...
| Published in: | International Journal of Technology |
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| Main Authors: | , , , |
| Format: | Article |
| Language: | English |
| Published: |
Universitas Indonesia
2022-07-01
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| Subjects: | |
| Online Access: | https://ijtech.eng.ui.ac.id/article/view/4886 |
| Summary: | Temperature
and coagulant types have an important impact on the quantity and quality of the
residue (sludge) in water and wastewater treatment processes. Temperature
influences water viscosity and the distribution of the coagulant in water. Coagulants
can promote the agglomeration of fine particles into larger flocs so that they
can be more easily separated from the water. Experiments have been conducted to
explore the relationship between temperature (16-26°C), the type of coagulant, and
sludge dewaterability (estimated using the capillary suction time (CST)). Alum,
Ferric, and Moringa oleifera Lam were
used as coagulants. The influences of different mixer shapes, turbidity values,
and flocs sizes on sludge dewaterability have been assessed. The results show
that ferric chloride was unaffected by temperature, whereas alum and M.
oleifera performances were influenced by temperature. CST results using the
coagulant ferric chloride, regardless of mixer shape, turbidity, and floc size,
were insensitive to temperature differences. |
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| ISSN: | 2086-9614 2087-2100 |