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Cationized tannin-based coagulant from Acacia mearnsii as an alternative to alum coagulants
Transcript of Cationized tannin-based coagulant from Acacia mearnsii as an alternative to alum coagulants
The aim of this project is to evaluate the use of a natural organic coagulant from cationized
tannin in the water treatment and compare it with alum compounds.
Cationized tannin-based coagulant from
as an alternative to alum coagulants
Investigate amine compound
Evaluate the effectiveness of tannin-based coagulant
Compare with Alum compounds
Evaluate the sludge production
Link between Alum compounds and Alzheimer’s disease.
Preliminary dosage study
Jar-testing: Mixing and Settling
Jar-testing: analysis of each coagulant
Varying mixing time
Varying mixing speed
Raw water pH
Define the optimum concentration of coagulant for the tested water.
Preliminary Cationization study
Tannin extract (not the aim)
Concentration of Tannin extract
Water treatment is a solution in order to enhance water quality for drink or other purpose
Raw water maybe not suitable
Acacia: Indigenous from Australia
Simple extraction of tannin
Water from Adelaide water treatment plant
Tannin Extract = less than AU$1/20mg
Turbidity and DOC analisys
Jar-testing and analysis
Coagulation is a important part of water treatment
Cationized Acacia tannin have several advantages when used as coagulant
Cationized Acacia Tannin is an alternative to alum compounds for the coagulation process.
Evaluation of Amine compound
Comparison with Alum