| Abstract |
| The performance of filter beds using granular media such as fiber cube, ceramic ball, ahthrcite, and GAC was evaluated as a pretreatment for organic and particulate matter removal in the water wth high concentration of saline. Applied filtration velocity (FV) were<50m/h for high-rate fibre filter (HRF), < 5m/h for biological aerated filter (BAF), and <10 m/h for anthracite media filter(AMF) and granular media filter (GMF). As a result, the HRF bed was more effective inreducing turbidity, while the BAF bed was efficitive in reducing COD and ammonia nitrogen. The performance was a slight effective compared to HRF/BAF/AMF system due to higher specific surface area of GAC. Turbidity concentration in a half depth of HRF and BAF beds decreased to approximate 70% removal rate of total amount removed in both bed. |
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| Key Words |
| Granular media filter beds, fibre cube, anthracite, GAC, saline water, pretreatment |
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