Parameters
• records (string): if records is true, the array returned is object oriented. Otherwise, it is column oriented (polars dataframe).

Responses
• 200: Returns an array with all scientific studies that are used in the tool

Example
http://localhost:3001/sci-studies/sci-studies?records=true

Parameters:
• id (string): The id of the technology to retrieve (only one).

Responses:
• 200: Returns an array with technologies
• 400: Bad request if id does not exist

Example
http://localhost:3001/technologies/technologies?id=French_CW

Table with ids and the corresponding technology:

Parameters
• waterType (string): The type of water in the scenario. Defaults to any_wastewater, and so, it returns only technologies for water treatment.
  One of the following:
  • any_wastewater
  • raw_domestic_wastewater
  • greywater
  • secondary_treated_wastewater
  • pretreated_domestic_wastewater
  • river_diluted_wastewater
  • camping_wastewater
  • offices_wastewater
  • cso_discharge_water
  • rain_water
  • runoff_water
  When the waterType ends with "_wastewater" or is "greywater", then the technologies for water treatment are selected and the parameters for stormwater technologies are ignored.
  When the waterType ends with "_water", then the technologies for stormwater management are selected and the parameters for treatment technologies are ignored.
Parameters for treatment technologies:
• inhabitants (positive number): The number of people served by the technology.
• litresPerson (positive number): The litres of wastewater generated by a person in a day. Default: 120.
• inflow (positive number): The inflow in litres/day. If not provided is calculated as inhabitants * litresPerson
• climate (string): The climate of the scenario, according to Koppen classification. Default: temperate.
  One of the following:
  • tropical
  • dry
  • temperate
  • continental
• avgTemperature (number): The average temperature of the coolest month in the scenario.If climate is not provided, this is used to classify the climate.
• pollutants (array): The pollutants to be removed by the technology. If pollutants are included in minPerformance or in pollutantsConcentrations, they are automatically added to this array.
  Any of the following:
  • bod_removal
  • cod_removal
  • nh4_removal
  • no3_removal
  • tn_removal
  • p_removal
  • pathogens_reduction
• minPerformance (key:value object): The minimal performance of the technologies removing the pollutant. Default is 80. The pollutants admitted are bod cod tn nh4.
• pollutantsConcentrations (key:value object): The pollutants concentrations in the inflow and outflow. The name of the pollutants must be suffixed with _in or _out depending on the location of the pollutant. The value of the pollutant must be a positive number. For example: {"bod_in": 50, "bod_out": 10}. The pollutants admitted and the units are in the following table:

  Pollutant	Units
  bod	mg/L
  cod	mg/L
  tn	mg/L
  nh4	mg/L

Parameters for stormwater management technologies:
• onlyInfiltration (bolean): If true, only technologies with infiltration are selected.
The following parameters are used to estimate the surface of the technologies:
• spilledVolume (positive number): The volume of water spilled in the event of interest in m³.
• cumRain (positive number): The cumulated rain in l/m² for the event of interest. If spilledVolume is provided, this is ignored.
• catchmentArea (positive number): The catchment area in m². If spilledVolume is provided, this is ignored.
• duration (positive number): The duration of the rain in hours.
• drainagePipeDiameter (positive number): The diameter of the drainage pipe in m. (default: 0). Only used if surface is estimated.
• infiltration (positive number): The infiltration rate of the receiving soil in mm/s. If not provided, it is assumed as 0, i.e., no infiltration is possible. Then, technologies without storage capacity are rejected. Only used if surface is estimated.
• infiltrationSoils (string): The type of soil where the technology is located. Only used if surface is estimated and infiltration is not provided.
  One of the following:
  • sand
  • loamySand
  • sandyLoam
  • loam
  • siltLoam
  • sandyClayLoam
  • clayLoam
  • siltyClayLoam
  • sandyClay
  • siltyClay
  • clay
Generic parameters:
• area (positive number): The available surface to allocate the technology.
• vertical (boolean): If false, green wall technologies are rejected.
• verticalArea (positive number): The available vertical surface to allocate vertical technologies.
• household (boolean): If true, only technologies that are available at house scale are selected.
• ecosystemServices (key:value object): The technologies are filtered in terms of the provision of ecosystem services. The values admitted are from 0 (none) to 3 (high). All technologies providing the ecosystem services at that level or higher are included in the list of technologies returned.
  The ecosystem services admitted are:
  • es_biodiversity_fauna
  • es_biodiversity_flora
  • es_temperature_regulation
  • es_flood_mitigation
  • es_cso_mitigation
  • es_carbon_sequestration
  • es_biomass_production
  • es_aesthetic_value
  • es_recreation
  • es_pollination
  • es_food_source
  • es_water_reuse
  • es_biosolids
• energy (string 'yes'|'no'): If 'no' technologies not using energy are selected. If 'yes' only technologies using energy are selected.
• manPower (int 0:3): Manpower is the level of work hours required for the operation of the technologies. When provided, all technologies with a higher level of manpower are rejected.
• skills (int 0:3): Skills refer to the required technical knowledge to operate the technology. When provided, all technologies with a higher level of manpower are rejected.
• biohazardRisk (int 0:3): Biohazard risks include microorganisms, viruses and toxins that can affect human health. When provided, all technologies with a higher level of manpower are rejected.
• techIds (array): This is a backdoor to get specific technologies. It expects and array of IDs corresponding to technologies in the knowledge base.

Responses
• 200: Returns an array with all suitable technologies.
• 400: Bad request with an error message if body or some parameters are not in the expected format.

{
  "waterType": "greywater",
  "inhabitants": 200,
  "litresPerson": 120,
  "inflow": 3000,
  "area": 200,
  "pollutants": ["bod_removal", "pathogens_reduction"],
  "minPerformance": {"bod": 90, "tn": 80},
  "pollutantsConcentrations": {"bod_in": 50, "bod_out": 10},
  "climate": "tropical",
  "avgTemperature": 21,
  "vertical": false,
  "verticalArea": 50,
  "ecosystemServices" : {
    "es_biodiversity_fauna": 2,
    "es_recreation": 3
   },
  "energy": "no"
  "manPower": 3
  "skills": 2
  "biohazardRisk": 1
}

Parameters
• It accepts the same parameters asfind-nbsbut it expects an array of objects instead of an object in the request body.

Responses
• 200: Returns an array containing an array of technologies for each object (scenario) in the body request.
• 400: Returns a bad request when the request body is not an array

Details
• If some of the scenarios (objects in the array) returns a bad request, that item contains an error message
instead of the technology as follows:[{error: error message}]

[
  {
    "waterType": "greywater",
    "inhabitants": 200,
    "litresPerson": 120,
    "inflow": 3000,
    "area": 200,
    "climate": "tropical",
    "avgTemperature": 21
  },
  {
    "waterType": "raw_domestic_wastewater"
  }
]

Parameters
• techs (array): An array of technologies with features as provided by technologies/find-nbs.
• techIds (array): An array of ids of technologies. If techs is provided, this parameter is ignored.
• weights (key:value object): An object with the weights of each score in the mcda between 0 and 5. Weights not provided default to 2.5.
  The ecosystem services admitted are:
  • wMultifunctionality
  • wOperation
  • wSpaceRequirements
  • wEnvImpact
  • wCost

Responses
• 200: Returns an array containing an array of technologies for each object (scenario) in the body request.
• 400: Returns a bad request when the request body is not an array

{
  "techIds": ["WW", "HSSF_CW", "GR"],
  "weights" : {
    "wOperation": 2,
    "wEnvImpact": 3
   }
}

If your study has more than one sample with different concentrations in the inflow or in the outflow, please upload as separate studies repeating the corresponding information.

Parameters
• username (string)*: The username of the user adding the study.
• token (string)*: The token of the user adding the study (provided by API administrators).
• email (string)*: The email of the user adding the study.
• company (string): The company of the user adding the study.
• technology (key:value object)*: Information on the technology features.
  It can contain the following keys, some of them are mandatory (*):

  • techId (string)*: The id of the technology according to knowledge base:
    One of the following ids:

    id	Description
    A_FWS	Aerated + free water surface wetland
    IA_CW	Aerated treatment wetland
    AP+FP_PL	Anaerobic + facultative pond
    AP+FP+MP_PL	Anaerobic + maturation pond
    BS_ABS	Anaerobic bioretention system
    AP_PL	Anaerobic pond
    A_HA	Aquaponic system
    BS_BS	Bioretention swale (or trench)
    BS_BTP	Bioretention tree pit
    SW_CAS	Conveyance and attenuation swale
    DB_DB	Detention basin
    GR_ER	Extensive green roof
    FP+MP_PL	Facultative + maturation pond
    FP_PL	Facultative pond
    FP_PL+FWS_CW	Facultative pond + Free water surface flow constructed wetland
    FS_FS	Filter strips
    FWS_CW	Free water surface treatment wetland
    French_CW	French vertical flow treatment wetland
    PP_GR	Grass reinforcement
    HF_GW	Horizontal flow green wall
    HSSF_CW	Horizontal flow treatment wetland
    HSSF_CW+MP_PL	Horizontal flow treatment wetland + maturation pond
    WW	Hybrid living wall
    H_HA	Hydroponic system
    I-SRS	In-stream restoration
    IS_IBa	Infiltration basin
    IS_IT	Infiltration trench
    GR_IR	Intensive green roof
    GR_IRR	Intensive green roof with retention layer
    MP_PL	Maturation pond
    PP_MoPeP	Modular permeable paving
    NW	Natural wetland
    Phyto	Phytoparking
    PO_PO	Pond
    PO_PR	Pond retrofits
    BS_RG	Rain garden
    RG-T	Rain garden with treatment
    BS_RP	Raised planter
    SIS_S	Rapid-rate soil infiltration system
    IRM_CW	Reactive media in treatment wetland
    R_CW	Reciprocating treatment wetland
    Rair_FrW	Rhizosph'air aerated french wetland
    GR	Rooftop treatment wetland
    SIS_R	Slow-rate soil infiltration system
    IA_PL	Surface aerated pond
    CSO_CW	Treatment wetland for CSO
    TR_TR	Trees
    VSSF+HSSF_CW	Vertical flow + Horizontal flow treatment wetland
    VF_GW	Vertical flow green wall
    VSSF_CW	Vertical flow treatment wetland
    VF-RPS	Vertical flow wetland with recycle and partial saturation
    SW_WS	Wet swale
    WS	Willow system

  • surface (positive number)*: The surface of the technology in m².
  • year_operation (positive int)*: The year of operation of the technology.
  • hrt (positive number): The hydraulic retention time in days.
  • peopleServed (positive number): The number of people served by the technology.
• water (key:value object)*: Information on the water features
  It can contain the following keys, some of them are mandatory (*):

  • type (string)*: The type of water used in the study. One of the following:
    • any_wastewater
    • raw_domestic_wastewater
    • greywater
    • secondary_treated_wastewater
    • pretreated_domestic_wastewater
    • river_diluted_wastewater
    • camping_wastewater
    • offices_wastewater
    • cso_discharge_water
    • rain_water
    • runoff_water

    If your water does not fit with any of the above categories, please contact us.

  • inflow (positive number)*: The inflow in m³/day.
  • urbanWaterSystem (string): The urban water system where the technology is located. One of the following:
    • WWTP
    • Household
    • River
  • temperature (positive number): The temperature of the water in ºC.
  • airTemperature (number): The temperature of the air in ºC.
• pollutants (key:value object): The pollutants concentrations in the inflow and outflow. The name of the polluntats must be suffixed with _in or _out depending on the location of the pollutant. The value of the pollutant must be a positive number. For example: {"bod_in": 50, "bod_out": 10}. The pollutants admitted and the units are in the following table:

  Pollutant	Units
  bod	mg/L
  cod	mg/L
  tn	mg/L
  nh4	mg/L

• document (key:value object)*: Information of the publication presenting the data.
  It may contain the following keys, some of them are mandatory (*):

  • title (string)*: The title of the publication.
  • doi (string)*: The doi of the publication. If the publication does not have a doi, you can upload it to a repository that provides a doi (e.g. Zenodo).
  • year (positive int)*: The year of publication.
  • authors (string): The authors of the publication. The authors shpould follow the format last_name, first_name initials. If there are more than one author, they should be separated by ;.
  • journal (string): The journal where the publication was published.
  • issue (string): The issue of the journal where the publication was published.
  • startPage (positive int): The start page of the publication in the journal.
  • endPage (positive int): The end page of the publication in the journal.