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built templateclarifier-designwith-tool

Slr Calculation

Calculates secondary clarifier solids loading rate from total clarifier flow, MLSS concentration, and surface area, then compares the result with an explicit maximum criterion. The template reports solids mass flow, area-normalised loading, utilisation, margin, and a numeric criterion flag.

inputs

4 fields

context

2 archetypes

engine

with-tool

outputs

5 scored fields

contract fields

Parameter Map

4 inputs to 5 scored outputs

  • total_flow_m3_d

    float

    Total flow to the clarifier including return activated sludge

    1 to 1500000m3/d

  • mlss_concentration_mg_l

    float

    Mixed liquor suspended solids concentration

    500 to 8000mg/L

  • clarifier_surface_area_m2

    float

    Clarifier plan surface area

    1 to 100000m2

  • maximum_slr_kg_m2_h

    float

    Maximum allowable solids loading rate criterion

    1 to 20kg/m2.h
solids_mass_flow_kg_dtol 0.03

Clarifier solids mass flow

solids_loading_rate_kg_m2_htol 0.03

Calculated solids loading rate

utilisation_ratiotol 0.03

Ratio of calculated SLR to maximum criterion

compliance_margin_kg_m2_htol 0.03

Positive margin below the maximum criterion

criterion_satisfiedtol 0.01

Numeric flag where 1 means the criterion is satisfied

visibility contract

Difficulty Ladder

all_giveneasy

All parameters given for a secondary clarifier

all fields visible
all_givenmedium

All parameters given across secondary clarifier archetypes

all fields visible
all_givenhard

All parameters given for a high-rate clarifier

all fields visible

scenario bands

Archetype Atlas

secondary_clarifier

2 contexts

Secondary clarifier solids loading check

total_flow_m3_d2000 to 120000
mlss_concentration_mg_l1800 to 4500
clarifier_surface_area_m2100 to 5000
maximum_slr_kg_m2_h4 to 10

municipal-wwtp / secondary-clarifier

high_rate_clarifier

2 contexts

High-rate secondary clarifier solids loading check

total_flow_m3_d50000 to 500000
mlss_concentration_mg_l2500 to 6000
clarifier_surface_area_m22000 to 20000
maximum_slr_kg_m2_h6 to 14

large-wwtp / peak-wet-weather

rendered task

Generation Preview

large-wwtp-high-rate-clarifier-preview

difficulty
hard
visibility
all_given
archetype
high_rate_clarifier
site context
large-wwtp
instruction excerptslr-calculation_calc.py

visible fields

  • total_flow_m3_d50000 to 500000 m3/d
  • mlss_concentration_mg_l2500 to 6000 mg/L
  • clarifier_surface_area_m22000 to 20000 m2
  • maximum_slr_kg_m2_h6 to 14 kg/m2.h

withheld schema

solids_mass_flow_kg_dsolids_loading_rate_kg_m2_hutilisation_ratiocompliance_margin_kg_m2_hcriterion_satisfied
High-rate secondary clarifier solids loading check. large-wwtp. Required outputs: solids_mass_flow_kg_d, solids_loading_rate_kg_m2_h, utilisation_ratio, compliance_margin_kg_m2_h, criterion_satisfied