Abstract
In flocs blanket clarifier process, flocs density is a significant parameter which determine water treatment quality and efficiency. In this study, factors effecting flocs density were evaluated though kinetic and experimental methods. The kinetic study indicated that, the particle collision frequency, as well as flocs density, shares linear relationship with operational conditions such as raw water concentration, up-flow rate, and polymer dosage. The experimental results proved this conclusion, under the pilot experimental condition, flocs density declined linearly among with the increasing of up-flow rate uw, while when the up-flow rate was higher than 40 cm/min, flocs density had no significant decrease along with the increasing of uw. Both raw water concentration and PAM dosage presented positive correlation with flocs density. The experimental results indicated that, appropriate control of operational condition would improve the treatment effectively.
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