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ECOMAX - Clarifiers
Clarifier design . The clarifier is an apparatus in which chemical reactions associated with the introduction of reagents, as well as the physical processes of the formation of the formed sediments ( sludge ) in the volume of the clarifier water and filtration of the treated water through their layer, take place simultaneously . The contact medium in the clarifier, called a sludge filter, is formed from previously formed and newly formed sludge particles suspended due to the action of an upward flow of water.
The water passed through the sludge filter is freed from coarse particles contained in the source water and formed as a result of chemical reactions in the clarifier. Therefore, their residual concentration is usually in the range of 5 - 10 mg / dm3 , if the chemical and hydraulic regimes in the clarifier are not violated. When designing the clarifier, it is taken into account that the hydraulic processes in it include the following components:
- maintaining in a suspended state of solid particles that form a contact medium with an upward flow of water;
- removing excess of these particles from the contact medium zone;