RUFAS.biophysical.manure.storage.composting module#

class RUFAS.biophysical.manure.storage.composting.Composting(name: str, composting_type: str, storage_time_period: int, surface_area: float = inf)#

Bases: Storage

Class for managing and simulating the composting process of manure treatment.

This class simulates the composting process by considering various factors like weather, manure characteristics, and composting configurations. It provides methods for daily update of compost characteristics such as methane emissions, nitrogen content, and carbon decomposition. The calculations are based on standard composting models and environmental factors.

Parameters#

namestr: The name of the storage.
composting_typestr: The type of the composting process being used.
storage_time_periodint: The storage time period.

__init__(name: str, composting_type: str, storage_time_period: int, surface_area: float = inf)#: Initializes a manure Storage.

process_manure(current_day_conditions: CurrentDayConditions, time: RufasTime) → dict[str, ManureStream]#

Processes manure in Composting.

Parameters#

current_day_conditionsCurrentDayConditions: The current day conditions.
timeRufasTime: The time of the simulation.

Returns#

dict[str, ManureStream]: _The processed manure stream.

_apply_dry_matter_loss(methane_emission: float, carbon_decomposition: float) → None#

This function calculates and then applies the dry matter loss to the received manure in place.

Parameters#

methane_emissionfloat: The methane emission on the current day, kg/day.
carbon_decompositionfloat: The carbon decomposition on the current day, kg/day.

Raises#

ValueError: If any of the dry matter loss calculations results in negative values for received-manure non-degradable volatile solids, degradable volatile solids, or total solids.

_apply_nitrogen_losses(storage_nitrous_oxide_N: float, storage_ammonia_N: float, storage_N_loss_from_leaching: float) → None#

This function applies the nitrogen losses to the received manure nitrogen and ammoniacal nitrogen in place.

Parameters#

storage_nitrous_oxide_Nfloat: The nitrogen loss through nitrous oxide emissions on the current day, kg.
storage_ammonia_Nfloat: The nitrogen loss through ammonia emissions on the current day, kg.
storage_N_loss_from_leachingfloat: The nitrogen loss through leaching on the current day, kg.

Raises#

ValueError: If the total nitrogen losses are greater than the total received manure nitrogen.

static _calculate_composting_ammonia_emissions(composting_type: CompostingType, received_manure_nitrogen: float) → float#

This function calculates the total nitrogen loss to ammonia emission on the current day.

Parameters#

composting_typeCompostingType: The type of composting being used.
received_manure_nitrogenfloat: The nitrogen content of the received manure, kg.

Returns#

float: The total nitrogen loss to ammonia emission on the current day, kg.

static _calculate_composting_methane_emissions(manure_temperature: float, manure_volatile_solids: float, composting_type: CompostingType) → float#

This function calculates the composting solid manure methane emission on the current day.

Parameters#

manure_temperaturefloat: The manure temperature on the current day, Celsius.
manure_volatile_solidsfloat: The manure volatile solids of the received manure, kg.
composting_typeCompostingType: The type of composting being used.

Returns#

float: The solid manure methane emission on the current day, kg/day.

static _calculate_methane_conversion_factor(manure_temperature: float, composting_type: CompostingType) → float#

This function returns the methane conversion factor depending on the composting type and the temperature.

Parameters#

manure_temperaturefloat: The mean annual manure temperature, Celsius.
composting_typeCompostingType: The type of composting being used.

Returns#

float: The methane conversion factor, unitless.

_abc_impl = <_abc._abc_data object>#