What engineering standard and governing formula does the Coagulation & Rapid Mix/Flocculation Sizer use?

The Coagulation & Rapid Mix/Flocculation Sizer utilizes verified formulations conforming to AWWA Manual M37 / Water Treatment Plant Design (McGraw-Hill). It computes results using peer-reviewed equations with transparent mathematical step-by-step substitution for verification.

Can I export official calculation sheets for PE (Professional Engineer) submittals?

Yes. Click the 'Generate PE Submittal PDF' button inside the calculator to export a clean, timestamped engineering calculation sheet with inputs, intermediate variables, unit conversions, and signature review blocks.

Does the Coagulation & Rapid Mix/Flocculation Sizer support dual Imperial and Metric units?

Yes, you can toggle instantaneously between US Customary (Imperial) and SI Metric units with zero calculation drift or rounding artifacts.

What input variables are required to run the Coagulation & Rapid Mix/Flocculation Sizer?

The required design inputs are: Raw Water Flow Rate (Q), Coagulant Dosage (Alum as Al2(SO4)3·14H2O) (D_alum), Flocculant Polymer Dosage (D_poly), Raw Water Total Suspended Solids (TSS) (TSS_in), Rapid Mixer Power Output (P_mix), Rapid Mix Detention Time (t_rm).

AWWA Manual M37 / Water Treatment Plant Design (McGraw-Hill)

Coagulation & Rapid Mix/Flocculation Sizer

Velocity gradient G & Gt values, coagulant dosing, and inorganic waste sludge mass balance

Engineering Process Reference: Coagulation & Rapid Mix/Flocculation Sizer Calculator governing plant layout conforming to AWWA Manual M37 / Water Treatment Plant Design (McGraw-Hill).

1. Engineering Principles & Mathematical Formulation

Calculates chemical dosing rates, rapid mix and flocculation velocity gradients (G & Gt values), basin volumes, and dry waste sludge generation in raw water clarification.

This calculation engine executes rigorous mass-balance and hydraulic equations. Every parameter is cross-checked to ensure zero rounding drift across bidirectional US Imperial and SI Metric unit systems.

2. Governing Standards & Authoritative Citations

"Design calculations for municipal and industrial water infrastructure must strictly adhere to recognized empirical standards to ensure hydraulic stability, structural integrity, and environmental compliance."
— AWWA Manual M37 / Water Treatment Plant Design (McGraw-Hill), American Water Works Association (AWWA) & U.S. Environmental Protection Agency (EPA Manual 832-B-99-002)

Primary benchmark citations include Crane Technical Paper No. 410, ASME Section VIII, and Metcalf & Eddy Wastewater Engineering.

3. Required Input Parameters & Variables

Symbol: Q

Raw Water Flow Rate

Default: 100 (GPM)

Symbol: D_alum

Coagulant Dosage (Alum as Al2(SO4)3·14H2O)

Default: 25 (mg/L (ppm))

Symbol: D_poly

Flocculant Polymer Dosage

Default: 0.5 (mg/L (ppm))

Symbol: TSS_in

Raw Water Total Suspended Solids (TSS)

Default: 15 (mg/L (ppm))

Symbol: P_mix

Rapid Mixer Power Output

Default: 2.5 (HP)

Symbol: t_rm

Rapid Mix Detention Time

Default: 45 (sec)

4. Professional Engineer (PE) Submittal Workflow

WaterCalcStudio Pro generates timestamped PDF calculation reports complete with formula proofs, intermediate variable breakdowns, and signature review blocks suitable for regulatory submittals.