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The present study investigated the mechanism of physical water treatment through particle count analysis of the water sample with and without physical water treatment (PWT) technology. The PWT methods utilized catalytic devices and low-voltage-high-frequency device wherein water continuously recirculated through them. Concentrated hard water at 2,300-2,700 μS/㎝ electrical conductivity was utilized in the study at two different flow rates (i.e., 500 l/h, and 800 l/h). After 66 hours of operation for each test, the results showed that the total number of particles in the PWT-treated cases increased from 165-539% as compared with the no-treatment cases depending on the flow rate used. The present results provided by particle counting support the bulk precipitation hypothesis as the mechanism of PWT and electro-flocculation mechanism with the use of catalytic materials and LVHF technique.

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Abstract
1. Introduction
2. Experimental facilities and procedure
3. Experimental Results and Discussion
4. Conclusion
References

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UCI(KEPA) : I410-ECN-0101-2009-550-016803585