Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
654803 | International Communications in Heat and Mass Transfer | 2007 | 9 Pages |
The present study investigated the mechanism of physical water treatment (PWT) using particle count analyses of water. The PWT method utilized in the present study included catalytic devices and low-voltage–high-frequency device through which water continuously recirculated. Concentrated hard water at electrical conductivity of 2300–2700 μS/cm was circulated in the study at two different flow rates (i.e., 500 l/h and 800 l/h) at the room temperature. After 66 h of operation for each test, the total number of particles in water for the PWT cases increased by 165–540% as compared with those for the no-treatment cases, depending on the flow rate used. The present particle counting results provided a support for the bulk precipitation hypothesis as the mechanism of PWT, which is essentially an electro-flocculation process.