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
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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 µm and <10% v/v. |
The design features include:
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Provisions for coagulation and/or flocculation |
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Greater Side Water Depth or Surface Area |
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Greater Overflow Weir Length |
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Feedwell Energy Diffuser |
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Center Drive W/Variable Speed Control |
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Flocculating Feedwell |
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Effluent Weir and Baffle |
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Inboard Effluent Launder |
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Increase Side Water Depth |
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Higher Underflow Solids |
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Reduced Effluent Solids |
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Reduced Capital & Operating Expense |
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Greater Hydraulic Loading Rate = Smaller Basin Footprint |
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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:
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Municipal Wastewater |
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Ballast Water Treatment |
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Refinery |
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Water |
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Cooling Water |
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Food Processing |
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Pulp and Paper |
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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.
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