SPECIFICATION SHEET • SI METRIC
CAT: WATER-SLURRY
Wastewater Hydraulic Retention Time
Calculate wastewater hydraulic retention time and daily basin turnover from design flow and effective liquid volume.
OPERATING LIMITS — Hydraulic volume calculation only; verify effective volume, short-circuiting, mixing, peak-flow equalization, sludge accumulation, biological kinetics, temperature, and discharge criteria.
INPUT DESIGN PARAMETERS (SI)
m³/day
m³
CALCULATED SPECIFICATION OUTPUT
Hydraulic Retention Time
💧12 h
| Daily Basin Turnover | 2 1/day |
Related planning checklists
This calculator appears in the following engineering planning checklists:
Water-Treatment Chemical Dosing Check
Environmental Engineer1. Plant Water Balance Calculator2. Wastewater Hydraulic Retention Time3. Water Treatment Chemical Dosing4. Sedimentation Tank Sizing5. Rectangular Tank Volume & Capacity6. Freshwater vs Recycled Water Ratio
Technical Methodology & Engineering Principles
GOVERNING EQUATION
HRT = effective liquid volume / daily flow × 24; daily turnover = daily flow / effective liquid volume.
Assumptions & Scope
Hydraulic volume screen only. Use effective liquid volume after dead zones and sludge storage; verify short-circuiting, mixing, peak-flow equalization, biological kinetics, temperature, and applicable discharge criteria.
Operating Range & Boundary
Use finite, physically meaningful inputs within the stated operating assumptions.