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SEDIMENTATION

Sedimentation is the separation or concentration of suspended solids particles from a liquid by settling. Sedimentation can be divided into two operational processes, clarification and thickening. The objective of the thickener is to increase the suspended solids concentration, whereas the objective of the clarifier is to produce a clear effluent. Sciential's seasoned engineers are ready to assist in helping you achieve your process separation objective.


Conventional Clarifier

 
Clarification is a method for removing relatively small quantity of suspended solids from a dilute suspension to produce a clarified liquid. The key is balancing the upstream velocity of the liquid and the particle sedimentation velocity. Typical particle size and feed concentration range: 1-150 Ám and <10% v/v.

The design features include:

Provisions for coagulation and/or flocculation
Greater Side Water Depth or Surface Area
Greater Overflow Weir Length
Feedwell Energy Diffuser
Center Drive W/Variable Speed Control
Flocculating Feedwell
Effluent Weir and Baffle
Inboard Effluent Launder
Increase Side Water Depth
Higher Underflow Solids
Reduced Effluent Solids
Reduced Capital & Operating Expense
Greater Hydraulic Loading Rate = Smaller Basin Footprint
Higher Underflow Solids Concentration = Lower Pumping Rates




Clarifier Types Available

Suction
Solids Contact
Custom
Spiral Blade
Retrofit Equipment





Bench Clarifier Test Apparatus

Sciential's bench-scale clarification kits are used to conduct tests on a variety of waste streams. Typical applications include:

Municipal Wastewater   Ballast Water Treatment
Refinery   Water
Cooling Water   Food Processing
Pulp and Paper  

The use of the bench unit has been utilized as a tool to optimize the full-scale clarifier operation or determine the full-scale clarifier unit. The use of the bench test unit will aid in determining the settling velocity (rise rate), visual floc structure, effluent clarity, chemical type, chemical dosage, mixing intensity, and mixing duration.

Click here for instructions.