Sewage Inflow Per Day Given Total Solids Removed Calculator

Sewage Discharge Formula:

\[ Q_s = \frac{M' - (Q_w \times (X_R - X_E))}{X_E} \]

Mass of Solids Leaving the System:

kg/s

Volume of Wasted Sludge per day:

m³/s

Concentration of Solids in Returned Sludge:

kg/m³

Concentration of Solids in Effluent:

kg/m³

Sewage Discharge:

Unit Converter ▲

Unit Converter ▼

From:	To:

1. What is the Sewage Discharge Formula?

The Sewage Discharge formula calculates the flow rate of sewage when it is being discharged in the river. It accounts for the mass of solids leaving the system, volume of wasted sludge, and concentrations of solids in returned sludge and effluent.

2. How Does the Calculator Work?

The calculator uses the Sewage Discharge formula:

\[ Q_s = \frac{M' - (Q_w \times (X_R - X_E))}{X_E} \]

Where:

\( Q_s \) — Sewage Discharge (m³/s)
\( M' \) — Mass of Solids Leaving the System (kg/s)
\( Q_w \) — Volume of Wasted Sludge per day (m³/s)
\( X_R \) — Concentration of Solids in Returned Sludge (kg/m³)
\( X_E \) — Concentration of Solids in Effluent (kg/m³)

Explanation: The formula calculates sewage discharge by considering the net mass of solids and their concentrations in different parts of the wastewater treatment system.

3. Importance of Sewage Discharge Calculation

Details: Accurate sewage discharge calculation is crucial for designing wastewater treatment systems, monitoring environmental compliance, and managing water resources effectively.

4. Using the Calculator

Tips: Enter all values in the specified units. Ensure Concentration of Solids in Effluent is greater than zero for valid calculation.

5. Frequently Asked Questions (FAQ)

Q1: Why is sewage discharge calculation important?
A: It helps in designing appropriate treatment facilities, ensuring regulatory compliance, and protecting water quality in receiving environments.

Q2: What are typical units for these measurements?
A: Mass flow is typically in kg/s, volume flow in m³/s, and concentrations in kg/m³.

Q3: How does sludge wasting affect sewage discharge?
A: Sludge wasting removes solids from the system, which affects the mass balance and consequently the calculated sewage discharge.

Q4: What if the effluent concentration is zero?
A: The formula requires division by effluent concentration, so it must be greater than zero for valid calculation.

Q5: Can this formula be used for industrial wastewater?
A: Yes, the formula applies to both municipal sewage and industrial wastewater treatment systems.