Two figures in, a clear answer out. The mixed liquor volatile suspended solids calculator uses weight of crucible + ash, weight of crucible, sample volume, f m ratio, weight of filter paper + residue, weight of filter paper, sample volume, average primary treated cod, average untreated influent cod, flow, free board, length, side wall depth and width to produce cod added to aeration, primary effluent cod and aeration volume, applying the standard relationship for this problem in the order the calculation actually needs it.
What Is the Mixed Liquor Volatile Suspended Solids Calculator?
The mixed liquor volatile suspended solids calculator works out cod added to aeration, primary effluent cod and aeration volume from weight of crucible + ash, weight of crucible, sample volume, f m ratio, weight of filter paper + residue, weight of filter paper, sample volume, average primary treated cod, average untreated influent cod, flow, free board, length, side wall depth and width.
Biological relationships are usually approximations rather than exact laws, so the output is best treated as an estimate with a sensible range around it.
How the Mixed Liquor Volatile Suspended Solids Calculation Works
The calculation applies the relationship as published, step by step, so each intermediate value can be checked against the underlying theory.
Keep the units consistent throughout. Mixing a percentage with a proportion is the single most common source of an answer that is out by a factor of a hundred.
Assumptions Worth Knowing
Any relationship used here assumes a constant rate, a representative sample, or a stable population. Real populations rarely meet those conditions for long, so treat the answer as a guide.
Where the inputs are field measurements, a single misread value can shift the result noticeably. Measure carefully and record what you used.
A Worked Example
Working through an example, with weight of crucible + ash set to 10, weight of crucible set to 5, sample volume set to 2, the calculator returns primary effluent cod of -90, and cod added to aeration of -3.753, and aeration volume of 29,920. Substitute your own figures and the same steps produce the same kind of answer.
Frequently Asked Questions
What do I need to work out cod added to aeration?
Enter weight of crucible + ash, weight of crucible, sample volume, f m ratio, weight of filter paper + residue, weight of filter paper, sample volume, average primary treated cod, average untreated influent cod, flow, free board, length, side wall depth and width. The calculator then works through the relationship and reports cod added to aeration, primary effluent cod and aeration volume.
What does the mixed liquor volatile suspended solids actually calculate?
It takes weight of crucible + ash, weight of crucible, sample volume, f m ratio, weight of filter paper + residue, weight of filter paper, sample volume, average primary treated cod, average untreated influent cod, flow, free board, length, side wall depth and width and converts them into cod added to aeration, primary effluent cod and aeration volume using the standard relationship for this problem. Each step is applied in turn, so every output is traceable back to the numbers you typed in.
How should I enter weight of crucible + ash?
Use the value you actually have, in the unit shown next to the field. Enter every value in the same unit system. The calculator assumes the figures you supply are consistent, so it cannot correct a mistake that happens before the calculation starts.
Do I have to fill in every field?
Only the fields a particular result depends on. If you leave one blank, the results that need it simply show a note instead of a number, and everything else still works.
Is the answer exact?
It is as exact as the formula and the inputs allow. The method itself is the standard one for this problem, so the only sources of error are the figures you enter and the precision you ask for.