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built templatefundamental-calculationswith-tool

Mlss Inventory

Calculates total mixed liquor suspended solids inventory in an aeration basin from basin volume and MLSS concentration. The template also applies an explicit volatile-solids fraction to estimate MLVSS inventory and inert solids mass for activated sludge process checks.

inputs

3 fields

context

2 archetypes

engine

with-tool

outputs

3 scored fields

contract fields

Parameter Map

3 inputs to 3 scored outputs

  • aeration_volume_m3

    float

    Aeration basin volume

    10 to 200000m3

  • mlss_concentration_mg_l

    float

    Mixed liquor suspended solids concentration

    500 to 8000mg/L

  • mlvss_fraction

    float

    Fraction of MLSS that is volatile suspended solids

    0.4 to 0.9
mlss_inventory_kgtol 0.03

Total MLSS inventory

mlvss_inventory_kgtol 0.03

Estimated MLVSS inventory

inert_solids_inventory_kgtol 0.03

Estimated inert suspended solids inventory

visibility contract

Difficulty Ladder

all_giveneasy

All parameters given for a package activated sludge plant

all fields visible
all_givenmedium

All parameters given across package and municipal basins

all fields visible
all_givenhard

All parameters given for municipal aeration basin inventory checks

all fields visible

scenario bands

Archetype Atlas

package_activated_sludge

2 contexts

Package activated sludge plant

aeration_volume_m350 to 1500
mlss_concentration_mg_l2500 to 5000
mlvss_fraction0.65 to 0.85

remote-community-wwtp / industrial-package-wwtp

municipal_aeration_basin

2 contexts

Municipal activated sludge aeration basin

aeration_volume_m32000 to 100000
mlss_concentration_mg_l2000 to 4500
mlvss_fraction0.6 to 0.8

regional-wwtp / urban-nutrient-removal-plant

rendered task

Generation Preview

regional-wwtp-municipal-aeration-basin-preview

difficulty
hard
visibility
all_given
archetype
municipal_aeration_basin
site context
regional-wwtp
instruction excerptmlss-inventory_calc.py

visible fields

  • aeration_volume_m32000 to 100000 m3
  • mlss_concentration_mg_l2000 to 4500 mg/L
  • mlvss_fraction0.6 to 0.8

withheld schema

mlss_inventory_kgmlvss_inventory_kginert_solids_inventory_kg
Municipal activated sludge aeration basin. regional-wwtp. Required outputs: mlss_inventory_kg, mlvss_inventory_kg, inert_solids_inventory_kg