Eco-San¶
QSDsan: Quantitative Sustainable Design for sanitation and resource recovery systems
This module is developed by:
Tori Morgan <vlmorgan@illinois.edu>
Yalin Li <mailto.yalin.li@gmail.com>
Hannah Lohman <hlohman94@gmail.com>
This module contains unit operations used in the Eco-San system as described in Li, M.; Xiaokang, Z. Technical Report of Eco-san Water Recycling System. Version 20190504-V3. 2019. Note that the report is not publicly available, but information about the Eco-San system can be found at: https://sanitation.ansi.org/EcoSanToilet http://www.eco-san.cn/e_main.html
This module is under the University of Illinois/NCSA Open Source License. Please refer to https://github.com/QSD-Group/QSDsan/blob/main/LICENSE.txt for license details.
- class qsdsan.sanunits._eco_san.EcoSanAerobic(ID='', ins: Sequence[AbstractStream] | None = None, outs: Sequence[AbstractStream] | None = (), thermo=None, init_with='WasteStream', degraded_components=('OtherSS',), if_capture_biogas=False, if_N2O_emission=True, **kwargs)¶
Aerobic treatment unit in the Eco-San system.
Note that costs and environmental impacts associated with unit is considered in
EcoSanBioCost.- Parameters:
ins (Iterable(stream)) – waste: waste stream to be treated.
outs (Iterable(stream)) – treated: treated liquid leaving septic tank. CH4: fugitive CH4 emissions. N2O: fugitive N2O emissions.
References
[1] Ma Li and Zhou Xiaokang. Technical Report of Eco-san Water Recycling System. Version 20190504-V3. 2019.
- line: str = 'Eco san aerobic'¶
class-attribute Name denoting the type of Unit class. Defaults to the class name of the first child class
- class qsdsan.sanunits._eco_san.EcoSanAnaerobic(ID='', ins: Sequence[AbstractStream] | None = None, outs: Sequence[AbstractStream] | None = (), thermo=None, init_with='WasteStream', degraded_components=('OtherSS',), if_capture_biogas=False, if_N2O_emission=True, **kwargs)¶
Anaerobic treatment unit in the Eco-San system.
Note that costs and environmental impacts associated with unit is considered in
EcoSanBioCost.- Parameters:
ins (Iterable(stream)) – waste: waste stream to be treated.
outs (Iterable(stream)) – treated: treated liquid leaving septic tank. CH4: fugitive CH4 emissions. N2O: fugitive N2O emissions.
References
[1] Ma Li and Zhou Xiaokang. Technical Report of Eco-san Water Recycling System. Version 20190504-V3. 2019.
- line: str = 'Eco san anaerobic'¶
class-attribute Name denoting the type of Unit class. Defaults to the class name of the first child class
- class qsdsan.sanunits._eco_san.EcoSanAnoxic(ID='', ins: Sequence[AbstractStream] | None = None, outs: Sequence[AbstractStream] | None = (), thermo=None, init_with='WasteStream', degraded_components=('OtherSS',), if_capture_biogas=False, if_N2O_emission=True, **kwargs)¶
Anoxic treatment unit in the Eco-San system.
Note that costs and environmental impacts associated with unit is considered in
EcoSanBioCost.- Parameters:
ins (Iterable(stream)) – waste: waste stream to be treated.
outs (Iterable(stream)) – treated: treated liquid leaving septic tank. CH4: fugitive CH4 emissions. N2O: fugitive N2O emissions.
References
[1] Ma Li and Zhou Xiaokang. Technical Report of Eco-san Water Recycling System. Version 20190504-V3. 2019.
- line: str = 'Eco san anoxic'¶
class-attribute Name denoting the type of Unit class. Defaults to the class name of the first child class
- class qsdsan.sanunits._eco_san.EcoSanBioCost(ID='', ins: Sequence[AbstractStream] | None = None, outs: Sequence[AbstractStream] | None = (), thermo=None, init_with='WasteStream', **kwargs)¶
A non-reactive unit to account for all costs and environmental impacts associated with the biological treatment units within the Eco-San system (other than EcoSanPrimary and EcoSanMBR).
The following impact items should be pre-constructed for life cycle assessment: FRP, Pump.
References
[1] Ma Li and Zhou Xiaokang. Technical Report of Eco-san Water Recycling System. Version 20190504-V3. 2019.
- line: str = 'Eco san bio cost'¶
class-attribute Name denoting the type of Unit class. Defaults to the class name of the first child class
- class qsdsan.sanunits._eco_san.EcoSanECR(ID='', ins: Sequence[AbstractStream] | None = None, outs: Sequence[AbstractStream] | None = (), thermo=None, init_with='WasteStream', degraded_components=('OtherSS',), if_capture_biogas=False, if_N2O_emission=True, if_after_MBR=False, **kwargs)¶
Electrochemical reactor (ECR) in the Eco-San system with chlorine dosing.
The following impact items should be pre-constructed for life cycle assessment: Metal, Pump.
- Parameters:
ins (Iterable(stream)) – waste: waste stream to be treated. salt: NaCl to be added for treatment. HCl: HCl to be added for treatment.
outs (Iterable(stream)) – treated: treated liquid leaving septic tank. CH4: fugitive CH4 emissions. N2O: fugitive N2O emissions.
if_after_MBR (bool) – If this unit is used after a membrane bioreactor (MBR), ECR after an MBR will have lower costs compared to the scenario without an MBR.
References
[1] Ma Li and Zhou Xiaokang. Technical Report of Eco-san Water Recycling System. Version 20190504-V3. 2019.
See also
- property if_after_MBR¶
[bool] If this unit is used after a membrane bioreactor (MBR), ECR after an MBR will have lower costs compared to the scenario without an MBR.
- line: str = 'Eco san ECR'¶
class-attribute Name denoting the type of Unit class. Defaults to the class name of the first child class
- class qsdsan.sanunits._eco_san.EcoSanMBR(ID='', ins: Sequence[AbstractStream] | None = None, outs: Sequence[AbstractStream] | None = (), thermo=None, init_with='WasteStream', degraded_components=('OtherSS',), if_capture_biogas=False, if_N2O_emission=True, **kwargs)¶
Membrane bioreactor for the Eco-San system.
The following impact items should be pre-constructed for life cycle assessment: FRP.
- Parameters:
ins (Iterable(stream)) – waste: waste stream to be treated.
outs (Iterable(stream)) – treated: treated liquid leaving septic tank. CH4: fugitive CH4 emissions. N2O: fugitive N2O emissions.
References
[1] Ma Li and Zhou Xiaokang. Technical Report of Eco-san Water Recycling System. Version 20190504-V3. 2019.
See also
- line: str = 'Eco san MBR'¶
class-attribute Name denoting the type of Unit class. Defaults to the class name of the first child class
- class qsdsan.sanunits._eco_san.EcoSanPrimary(ID='', ins: Sequence[AbstractStream] | None = None, outs: Sequence[AbstractStream] | None = (), thermo=None, init_with='WasteStream', if_with_MBR=False, sludge_moisture_content=0.95, **kwargs)¶
The primary treatment of the Eco-San system uses anaerobic digestion to treat wastes (similar to a septic tank).
It can be used in conjunction with a membrane bioreactor (MBR) to recovery N and P as struvite.
The following impact items should be pre-constructed for life cycle assessment: FRP.
- Parameters:
ins (Iterable(stream)) – Waste for treatment, Mg(OH2) used if struvite is produced.
outs (Iterable(stream)) – Treated waste, fugitive CH4, fugitive N2O, generated sludge, and struvite.
References
[1] Ma Li and Zhou Xiaokang. Technical Report of Eco-san Water Recycling System. Version 20190504-V3. 2019.
- property if_generate_struvite¶
[bool] If generating struvite (True when with MBR).
- property if_struvite_in_sludge¶
[bool] If the generated struvite is in sludge, always False (when MBR is included, struvite is generated as a separate stream).
- property if_with_MBR¶
[bool] If this unit has a membrane bioreactor (MBR), primary treatment with an MBR is able to recovery N and P as struvite.
- line: str = 'Eco san primary'¶
class-attribute Name denoting the type of Unit class. Defaults to the class name of the first child class
- property user_scale_up¶
[float] Scaling factor based on the user number.
- class qsdsan.sanunits._eco_san.EcoSanSolar(ID='', ins: Sequence[AbstractStream] | None = None, outs: Sequence[AbstractStream] | None = (), thermo=None, init_with='WasteStream', **kwargs)¶
A non-reactive unit to account for all costs and environmental impacts associated with the solar energy system.
The following impact items should be pre-constructed for life cycle assessment: FRP, Pump.
References
[1] Ma Li and Zhou Xiaokang. Technical Report of Eco-san Water Recycling System. Version 20190504-V3. 2019.
- line: str = 'Eco san solar'¶
class-attribute Name denoting the type of Unit class. Defaults to the class name of the first child class
- class qsdsan.sanunits._eco_san.EcoSanSystem(ID='', ins: Sequence[AbstractStream] | None = None, outs: Sequence[AbstractStream] | None = (), thermo=None, init_with='WasteStream', **kwargs)¶
A non-reactive unit to account for all costs and environmental impacts associated with controlling, recycling, and other miscellaneous parts.
The following impact items should be pre-constructed for life cycle assessment: Pump.
References
[1] Ma Li and Zhou Xiaokang. Technical Report of Eco-san Water Recycling System. Version 20190504-V3. 2019.
- line: str = 'Eco san system'¶
class-attribute Name denoting the type of Unit class. Defaults to the class name of the first child class