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built templateactivated-sludgewith-tool

Sludge Production

Estimates activated sludge production from BOD removal, observed biological yield, solids decay, primary TSS capture, and VSS-to-TSS conversion. The template reports BOD removed, observed yield, biomass VSS production, primary solids, and total sludge production.

inputs

9 fields

context

2 archetypes

engine

with-tool

outputs

5 scored fields

contract fields

Parameter Map

9 inputs to 5 scored outputs

  • flow_rate_m3_d

    float

    Process flow rate

    10 to 1000000m3/d

  • influent_bod_mg_l

    float

    Influent BOD concentration

    10 to 1000mg/L

  • effluent_bod_mg_l

    float

    Effluent BOD concentration

    0 to 100mg/L

  • influent_tss_mg_l

    float

    Influent TSS concentration

    0 to 1000mg/L

  • primary_tss_removal_pct

    float

    Primary treatment TSS removal

    0 to 80%

  • yield_coefficient

    float

    Biomass yield coefficient

    0.1 to 0.9

  • decay_coefficient_d_inv

    float

    Endogenous decay coefficient

    0 to 0.21/d

  • srt_days

    float

    Solids retention time

    1 to 60d

  • vss_to_tss_ratio

    float

    Biomass VSS to TSS ratio

    0.5 to 0.9
bod_removed_kg_dtol 0.03

BOD removed

observed_yield_vss_per_bodtol 0.03

Observed biomass yield

biomass_production_kg_vss_dtol 0.03

Biomass production as VSS

primary_solids_kg_tss_dtol 0.03

Primary solids captured

total_sludge_kg_tss_dtol 0.03

Total sludge production as TSS

visibility contract

Difficulty Ladder

all_giveneasy

All parameters given for package plant sludge production

all fields visible
all_givenmedium

All parameters given across package and municipal plants

all fields visible
all_givenhard

All parameters given for municipal sludge production

all fields visible

scenario bands

Archetype Atlas

package_plant

2 contexts

Package activated sludge plant

flow_rate_m3_d100 to 5000
influent_bod_mg_l150 to 400
effluent_bod_mg_l5 to 30
influent_tss_mg_l100 to 400

remote-community-wwtp / industrial-package-wwtp

municipal_plant

2 contexts

Municipal activated sludge plant

flow_rate_m3_d5000 to 500000
influent_bod_mg_l150 to 350
effluent_bod_mg_l2 to 20
influent_tss_mg_l150 to 450

regional-wwtp / urban-nutrient-removal-plant

rendered task

Generation Preview

regional-wwtp-municipal-plant-preview

difficulty
hard
visibility
all_given
archetype
municipal_plant
site context
regional-wwtp
instruction excerptsludge-production_calc.py

visible fields

  • flow_rate_m3_d5000 to 500000 m3/d
  • influent_bod_mg_l150 to 350 mg/L
  • effluent_bod_mg_l2 to 20 mg/L
  • influent_tss_mg_l150 to 450 mg/L
  • primary_tss_removal_pct30 to 70 %
  • yield_coefficient0.35 to 0.65
  • decay_coefficient_d_inv0.03 to 0.1 1/d
  • srt_days6 to 35 d
  • vss_to_tss_ratio0.65 to 0.85

withheld schema

bod_removed_kg_dobserved_yield_vss_per_bodbiomass_production_kg_vss_dprimary_solids_kg_tss_dtotal_sludge_kg_tss_d
Municipal activated sludge plant. regional-wwtp. Required outputs: bod_removed_kg_d, observed_yield_vss_per_bod, biomass_production_kg_vss_d, primary_solids_kg_tss_d, total_sludge_kg_tss_d