Implementing Benchmark Simulation Model No. 2

[adam-a-a]

Description

Our goal is to create a flowsheet for the Benchmark Simulation Model No. 2 (BSM2) which is a standard used in the wastewater treatment industry. BSM2 represents a full wastewater treatment plant (WWTP) that includes the activated sludge process as well as an anaerobic digestor, along with other units.

The ultimate goal is to utilize this detailed, plant-scale model, and prioritized BSM2-related model enhancements that would be required, to facilitate detailed technology comparisons via cost optimization for innovations proposed by teams under the IEDO 2336 effort.

Motivation

This will provide a detailed baseline for wastewater treatment processes and could be used for cost optimization studies.

Running TO-DO:

• Add precipitation PCM components to modified ADM1 #985
• Create a modified ASM2D that would be compatible with precipitation PCM extension for ADM1
• Running TO-DO for conventional BSM2 Flowsheet #1318
• Add TSS, COD, BOD5, Kjeldahl nitrogen to ASM2d BSM2-P Effluent Metrics w/o Flowsheet Constraints #1492
• Add TSS, COD, BOD5, Kjeldahl nitrogen to ADM1
• Track aggregate metrics throughout BSM2 flowsheet (pH, P components, N components) - see Solon 2017
• Add TSS, ISS, and/or VSS calculations directly to ASM/ADM models that are missing them and phase out ASM config option on thickener/dewaterer (started with modified ASM2D and modified ADM1 in ASM2d compatibility with thickener and dewatering units #1078 but needs additions on ASM1, ASM2d and ADM1)
• Refinement of scaling in ASM2D
• Review pH refinements in ASM and ADM models and incorporate into modified versions
• Secondary clarifier unit model - Takács model
• primary clarifier unit model - BSM implementation of model

Questions , points of discussion, and minor issues

• Implement variation of ASM1 --> ADM1 translator block that includes modified Copp Interface

• storage tank unit model?

• Modify auxiliary units to be compatible with other ASM models ASM2d compatibility with thickener and dewatering units #1078 - does primary clarifier in true implementation need this?

• Address simplification in modified ASM2d where S_IC does not account for carbonate and dissolved CO2 (Serralta 2004)

• make a baseline activated sludge reactor unit model?

• Track hydrogen sulfide (H2S) in ADM such that Z_h2s != 0?

• Delete simple modified ASM2d model?

• storage tank unit model?

Tasks completed by June 2024 release:

• Export "BSM2" w/asm2d/adm1 to gui
• Replace Expr_ifs in ASM2d/ADM1 translator with smooth_max Replacing Expr_if & Changing Bio_P Default #1362

Tasks completed by Mar 2024 release:

• Full BSM2 flowsheet using ADM1 & ASM2d Full wastewater treatment plant with ASM2D for P tracking #1113 , BSM2 with P extension #1276
• Add aeration energy to ASM flowsheets (added to BSM2 flowsheet) Tinkering with BSM2 Optimization #1244

Tasks completed by Dec 2023 release:

• costing parameters and expressions for each unit in BSM2 Costing in BSM2 #1217
• Add TSS, COD, BOD5, Kjeldahl nitrogen to ASM1- Add influent/effluent quality metrics for ASM1 #1243

Tasks completed by Sept 2023 release:

• Export BSM2 (with ASM1/ADM1) to GUI BSM2 GUI #1125
• Modify dewaterer and thickener to be compatible with other ASM models ASM2d compatibility with thickener and dewatering units #1078
• Full BSM2 flowsheet using ADM1 & ASM1 BSM2 full flowsheet #1038
• Implement translator block for ASM2D-> modified ADM1 w/ P extension ASM2d/ADM1 Translator #1074
• Update ADM1 & modified ADM1 documentation based on the refinements in BSM2 full flowsheet #1038
• Refinement of initial ADM1/AD implementation, including scaling/initialization as needed ADM1 refinement #909
• Refinement of scaling in ASM1 BSM2 full flowsheet #1038
• Create how-to or tutorial example for BSM2 #1002

Tasks completed by the June 2023 release:

• ElectroN-P sub-flowsheet w/ AD -> ADM1/ASM2d -> ElectroN-P Initial ElectroNP flowsheet #1032
• Create a new ASM2d model that does not make as many simplifications New ASM2d Model #1031 New ASM2d Model Documentation #1036
• Create ADM1/ASM2d translator using the new ASM2d model New ADM1/ASM2d Translator #1058 ADM1/ASM2d Translator Doc Update #1063
• Add Acid-Base Eq.Constraints to ADM1 Documentation #1013
• Thickener & Dewatering Unit Model Documentation #1017
• Implement translator block for ADM1-> ASM1 Translator block ADM1-ASM1 #933
• Implement translator block for ASM1-> ADM1 Translator block ASM1-ADM1 #962
• Documentation for ASM1-->ADM1 for Copp Interface ASM1/ADM1 Translator Documentation #1000
• Create a new ADM1 model that accounts for phosphorus Add modified ADM1 model with P extension #948
• Implement translator block for ADM1-> ASM2D ADM1 ASM2D translator block part 1 #935 (waiting on new ADM1 model Add modified ADM1 model with P extension #948)
• Documentation for ADM1 w/ P extension and/or precipitation PCM extension Modified ADM1 Documentation #996
• Dewatering unit model Dewatering and thickener unit models BSM2 #1010
• Sludge thickening unit model Dewatering and thickener unit models BSM2 #1010
• Documentation for dewatering unit and thickener Thickener & Dewatering Unit Model Documentation #1017
• ElectroNP ZO model with UnitModelBlockData base #1020
• Remove s_ic_rxns for loop in adm1_reactions? - no longer relevant/delete
• Update p_sat name in ADM1 Properties Vapor to pressure_sat #941 Addressed in PR Minor Refinements to ADM1 #997
• Address question about CO2 only in gas phase for ADM1 Should CO2 be in ADM1 liquid phase too? #1004 ADM1 Documentation Update #1012

[lbianchi-lbl]

@adam-a-a @agarciadiego @luohezhiming confirm that it would be good (and doable) to have this done for June.

[adam-a-a]

To elaborate, we think it's be doable to have an initial implementation of the full flowsheet functioning with much of the unit documentation in place. However, some of the additional items around model enhancement may spill over past June.

[adam-a-a]

Noting this down as I work on #1078 : noticed that the thickener doesn't have its own calculate_scaling_factors nor initialize methods. Instead it would use said methods from the IDAES separator unit, which the thickener class inherits from. Furthermore, testing of scaling is not split into its own test; it is packed in with the testing of initialization of the thickener, and no exploration on badly_scaled_variables or unscaled_constraints is conducted.

[adam-a-a]

This relates to #1318 as well