###############################################################################
# WaterTAP Copyright (c) 2021, The Regents of the University of California,
# through Lawrence Berkeley National Laboratory, Oak Ridge National
# Laboratory, National Renewable Energy Laboratory, and National Energy
# Technology Laboratory (subject to receipt of any required approvals from
# the U.S. Dept. of Energy). All rights reserved.
#
# Please see the files COPYRIGHT.md and LICENSE.md for full copyright and license
# information, respectively. These files are also available online at the URL
# "https://github.com/watertap-org/watertap/"
#
###############################################################################
"""
This module contains a zero-order representation of a microbial battery water
treatment unit.
"""
from pyomo.environ import Var, units as pyunits
from idaes.core import declare_process_block_class
from watertap.core import build_sido_reactive, constant_intensity, ZeroOrderBaseData
# Some more information about this module
__author__ = "Travis Arnold"
[docs]@declare_process_block_class("MicrobialBatteryZO")
class MicrobialBatteryData(ZeroOrderBaseData):
"""
Zero-Order model for a microbial battery water treatment unit.
"""
CONFIG = ZeroOrderBaseData.CONFIG()
[docs] def build(self):
super().build()
self._tech_type = "microbial_battery"
build_sido_reactive(self)
constant_intensity(self)
# Create hydraulic retention time variable
self.HRT = Var(
units=pyunits.hr,
bounds=(0, None),
doc="Hydraulic retention time of water treatment unit",
)
self._perf_var_dict["Hydraulic Retention Time"] = self.HRT
self._fixed_perf_vars.append(self.HRT)
# Create reactor volume variable
self.reactor_volume = Var(
units=pyunits.m**3,
bounds=(0, None),
doc="Volume of water treatment unit",
)
self._perf_var_dict["Reactor Volume"] = self.reactor_volume
@self.Constraint(self.flowsheet().time, doc="Constraint for reactor volume.")
def reactor_volume_rule(b, t):
return b.reactor_volume == (
pyunits.convert(
b.HRT * b.properties_in[t].flow_vol, to_units=pyunits.m**3
)
)