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Overflow Treatment (Overløbsanlæg)

Summary

Treatment of combined sewer overflow (CSO) — urban stormwater that bypasses the WWT plant during heavy rain events. Indexed by overflow point pp.

Decision variable

OFx(pp) ∈ {0,1} — binary per overflow point.

N Effect

OFNeff(pp) from OFNeff.inc — overflow point-specific N reduction (kg N/yr). 

OF_N_red(k) = Σ_pp OFNeff(pp) × OFx(pp) / 1000   [tons N/yr]

P Effect

OFPeff(pp) from OFPeff.inc — overflow point-specific P reduction (kg P/yr). 

OF_p_red(up_lakecatch) = Σ_pp up_lakepp(up_lakecatch,pp) × OFpeff(pp) × OFx(pp)

Cost

ofcost(pp) from OFCost.inc — overflow-point-specific.

Data sources

  • N effects: OFNeff.inc
  • P effects: OFPeff.inc
  • Costs: OFCost.inc
  • Spatial: Set_pp.inc, set_kpp.inc, set_up_lakepp.inc
  • Count: OF_count.inc