Efficient Coagulant Dosing for Sustainable Water Treatment. An Empirical Study on Reducing Chemical Consumption in Swedish Drinking Water Treatment Plants.
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Författare
Typ
Examensarbete för masterexamen
Master's Thesis
Master's Thesis
Modellbyggare
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Sammanfattning
This abstract summarizes a research project focused on reducing chemical
consumption in Swedish drinking water treatment plants (WTPs) by optimizing coagulant
dosage and pH conditions. The project addresses societal, ethical, and ecological
concerns associated with coagulant usage. The aim is to identify opportunities for
reducing coagulant dose through real-time monitoring of current water conditions,
and if opportunities exist, to further identify what barriers are currently preventing
them from being realised.
The study compares the current dosage used in WTPs with the optimum dosage
determined through experiments. The focus is on achieving efficient removal of
Dissolved Organic Carbon (DOC) and Absorbance (ABS) while minimizing chemical
consumption. The results show that in 9 out of 11 WTPs studied, the optimum
dosage was lower than the current dosage, indicating potential for reducing
chemical consumption and achieving cost savings.
The study emphasizes that optimizing dosages does not compromise treatment
efficiency; instead, it highlights the potential for sustainable and resource-efficient water
treatment practices. However, the specific characteristics of each WTP need to be
considered, and further research is necessary to ensure applicability on a broader
scale.
The research suggests that changing the coagulant itself could further improve the
coagulation process. By evaluating and adopting more efficient coagulants, WTPs
can potentially achieve higher removal efficiencies and reduce chemical dosage.
However, careful evaluation, pilot-scale testing, and cost-benefit analysis are required for
selecting suitable coagulants.
Overall, the research contributes to the goal of providing cleaner and safer drinking
water by reducing chemical consumption, improving treatment efficiency, and
promoting sustainability in water treatment processes. Further research opportunities
exist to enhance monitoring systems and continue improving the effectiveness of
water treatment practices.
Beskrivning
Ämne/nyckelord
Absorbance, Coagulation, DOC, Dosage, Drinking water pH, TOC, WTP