An experimental study on the bulk precipitation mechanism of physical water treatment for the mitigation of mineral fouling |
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| Authors: | Leonard D. Tijing Bock Choon Pak Byung Joon Baek Dong Hwan Lee Young I. Cho |
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| Affiliation: | 1. Division of Mechanical and Aerospace System Engineering, Automobile Hi-Technology Research Center, Engineering Research Institute, Chonbuk National University, Jeonju 561-756, Jeonbuk, Republic of Korea;2. Department of Mechanical Engineering and Mechanics, Drexel University, Philadelphia, PA 19104, USA |
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| Abstract: | 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. |
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| Keywords: | Physical water treatment Bulk precipitation Particle count Mineral fouling |
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