About ClariSim
ClariSim is a software solution tailored to provide quick and easy assessments of final tank performance for Activated Sludge
Plants (ASPs) anywhere in the world. Secondary settlement is the pinch point in all ASPs and poor clarifier performance will compromise both the plant
capacity and the effluent quality.
If you are you looking to increase the capacity of your ASP or if you have a problem with sludge blanket carry over in your
existing clarifiers then ClariSim may be able to help you.
Getting More From Your Existing Assets
Most final tanks installed throughout the world are poorly designed and inefficient. Usually, the settling area available is
under utilised sometimes by as much as 30%. So, if you improve the performance of your existing tanks you will be able to carry more flow and
solids load and potentially avoid building new clarifying capacity. ClariSim can help you find the maximum capacity of your existing assets and optimise their
internal design for the best performance of those assets.
Building New Capacity
If new capacity is absolutely required then it is important to install well designed units that will perform efficiently as soon
as they are commissioned. ClariSim is the perfect tool for verifying that the tank dimensions and internal design chosen for a particular site will be able to
meet the flow and load capacity before you turn on the first flows.
How It Works
The new ClariSim interface is both a mass flux calculator for estimating the performance of a clarifier, based on 1D settling
theory and a front end interface for the general purpose Computational Fluid Dynamics (CFD) software ANSYS-CFX which is used for performance assessment.
The tool enables sensitivity studies to be performed for geometry modification and process condition changes so that the
maximum treatment capacity of the clarifier and therefore the ASP, may be quickly and easily determined.
The mass flux calculator, also available as 'ClariSim Lite' distributed as a web based application, is used before the CFD
analysis in order to check the process condition (state point) to be considered. If the Clarifier fails the mass flux check then it will
fail the CFD analysis regardless of the tank internal geometric design. Hence, the pre-processing step with ClariSim stops wasted CFD analysis time
for bounded systems that simply will not work.
ClariSim is available for use as a Java application and may be used in three ways.
- If you wish to perform mass flux calculations only then use ClariSim Lite to check the performance of the final tanks. In this
software you can vary the number of tanks, the diameter of the tanks, the influent mixed liquor concenrtation, the sludge SSVI, the recycle flow (RAS) and sludge
surplus (SAS) flow. Results of the mass flux assessments are produced in convenient easy to understand Portable Document Format (PDF) reports.
Register for a free trial here.
- If you want to calculate the effluent suspended solids concentration for an existing tank, new tank or for retrofits then save the
state points from within ClariSim lite and e-mail the .csm file produced by ClariSim directly to us. We will use Computational Fluid Dynamics and outputs
for the analysis will be made available for you to view from this web site like the example here.
- If you wish to perform CFD analysis on an individual tank design yourself then you will need the full ClariSim software which can be purchased
from MMI Engineering by making an enquiry here.
For more details on ClariSim, ClariSim Lite and general clarifier design then please contact us directly.
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