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Secondary Clarifier Solids Loading Rate (SLR) & Overflow Rate (SOR) Calculator

Easily calculate and compute secondary clarifier solids loading rate (slr) & overflow rate (sor) calculator with accurate equations, live formulas, and expert guidance.

Average hydraulic forward flow to clarifiers.

Fraction of forward flow recycled from clarifier underflow (0.3 to 1.0).

Total solids concentration entering clarifier from aeration basin.

Internal diameter of circular clarifier tank.

Number of active parallel clarifiers sharing the flow.

Calculated Result
2.65 kg/(m²·h)

Solids Loading Rate

Solids Loading Rate

2.65 kg/(m²·h)

Solids Loading Rate Kg M2 H

2.65

Surface Overflow Rate M3 M2 Day

12.4

Total Clarifier Area M2

1608.5

Weir Overflow Loading M3 M Day

99.5

2.65 — kg/(m²·h)

Calculation Breakdown

  1. Applied FormulaCalculates secondary clarifier Solids Loading Rate (SLR), Surface Overflow Rate (SOR), and effluent weir loading to prevent sludge blanket washout.SLR = \frac{(Q + Q_r) X}{24 \cdot A}, \quad SOR = \frac{Q}{A}

Clarifier SLR & SOR Metric Output

Interactive visualization based on your current inputs

Calculated Value
0.00.71.32.02.6Solids Loading Rate

What Is the Secondary Clarifier Solids Loading Rate (SLR) & Overflow Rate (SOR) Calculator?

This tool computes secondary clarifier solids loading rate (slr) & overflow rate (sor) calculator with high precision arithmetic.

How Does the Secondary Clarifier Solids Loading Rate (SLR) & Overflow Rate (SOR) Calculator Work?

Calculates secondary clarifier Solids Loading Rate (SLR), Surface Overflow Rate (SOR), and effluent weir loading to prevent sludge blanket washout.

Secondary Clarifier Solids Loading Rate (SLR) & Overflow Rate (SOR) Calculator Formula & Variables

The core mathematical equation utilized by this calculator is expressed as:

SLR=(Q+Qr)X24⋅A,SOR=QASLR = \frac{(Q + Q_r) X}{24 \cdot A}, \quad SOR = \frac{Q}{A}

Calculates secondary clarifier Solids Loading Rate (SLR), Surface Overflow Rate (SOR), and effluent weir loading to prevent sludge blanket washout.

How to Use the Secondary Clarifier Solids Loading Rate (SLR) & Overflow Rate (SOR) Calculator

  1. Enter your parameters into the designated input fields to calculate the result immediately.

Step-by-Step Example Calculation

Secondary Clarifier Solids Loading Rate (SLR) & Overflow Rate (SOR) Calculator Example

Input Values:

influentFlowRateM3PerDay:20000
returnSludgeRecycleRatio:0.6
mixedLiquorSuspendedSolidsMcssMgL:3200
clarifierDiameterMeters:32
numberOfClarifierUnits:2
Worked Steps: Sample evaluation based on standard reference conditions.

Understanding Your Result

The calculated primary figure indicates the optimal or required kg/(m²·h).

Factors That Affect the Result

  • Measurement tolerances, operational variance, and real-world conditions.

When Should You Use This Calculator?

  • Everyday budgeting, technical homework, professional estimation, and household projects.

Assumptions & Limitations

  • Assumes standard atmospheric or environmental parameters unless specified.

Frequently Asked Questions

Calculation Accuracy & Reference Note

Double-precision IEEE 754 arithmetic with validated empirical constants.

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