Aeration Equipments¶

Blower¶

class qsdsan.equipments.Blower(ID=None, linked_unit=None, F_BM={'Blower building': 1.11, 'Blower piping': 1, 'Blowers': 2.22}, lifetime=15, lifetime_unit='yr', units={'Blower capacity': 'CFM', 'Number of blowers': '', 'Total blower power': 'kW', 'Total gas flow': 'CFM'}, N_reactor=2, gas_demand_per_reactor=1, TDH=6, eff_blower=0.7, eff_motor=0.7, AFF=3.33, building_unit_cost=90)¶

Design and cost blowers based on Shoener et al..

Note that blower building concrete usage and excavation is not included here as blowers are often housed together with the reactors.

Refer to AnMBR or ActivatedSludgeProcess for examples.

Parameters:

N_reactor (int) – Number of the reactors where the gas sparging modules will be installed.
gas_demand_per_reactor (float) – Gas demand per reactor, [cfm] (cubic ft per minute).
TDH (float) – Total dynamic head for the blower, [psi].
eff_blower (float) – Efficiency of the blower in fraction (i.e., 0.7 for 70%).
eff_motor (float) – Efficiency of the motor in fraction (i.e., 0.7 for 70%).
AFF (float) – Air flow fraction. The default value is calculated as STE/6 (STE stands for standard oxygen transfer efficiency, and default STE is 20). If using different STE value, AFF should be 1 if STE/6<1 and 3.33 if STE/6>1.
building_unit_cost (float) – Unit cost of the blower building, [USD/ft2].

References

[1] Shoener, B. D.; Zhong, C.; Greiner, A. D.; Khunjar, W. O.; Hong, P.-Y.; Guest, J. S. Design of Anaerobic Membrane Bioreactors for the Valorization of Dilute Organic Carbon Waste Streams. Energy Environ. Sci. 2016, 9 (3), 1102–1112. https://doi.org/10.1039/C5EE03715H.

GasPiping¶

class qsdsan.equipments.GasPiping(ID=None, linked_unit=None, F_BM=1.0, lifetime=15, lifetime_unit='yr', units={'Gas pipe material': 'kg'}, N_reactor=2, N_pipe_per_reactor=1, gas_demand_per_reactor=1, v_header=70, v_manifold=70, L_reactor=12, L_extra=0, W_reactor=21, W_extra=2, pipe_density=227.3, pipe_unit_cost=0)¶

Design and cost reactor gas header pipes and manifold based on Shoener et al..

The gas pipes will be layed along the length of the reactor with manifold along the width of th reactor (i.e., gas will be pumped from the manifold to the header then into the reactor).

Refer to ActivatedSludgeProcess for usage.

Parameters:

N_reactor (int) – Number of the reactor where the gas sparging modules will be installed.
N_pipe_per_reactor (int) – Number of the pipes per reactor.
gas_demand_per_reactor (float) – Gas demand per reactor, [cfm] (cubic ft per minute).
v_header (float) – Velocity of gas in the header pipe (layed along the length of the reactor), [ft/s].
v_manifold (float) – Velocity of gas in the manifold pipe (layed along the width of the reactor), [ft/s].
L_reactor (float) – Length of the reactor, [ft].
L_extra (float) – Extra length to be included in piping for each of the reactor, [ft].
W_reactor (float) – Width of the reactor, [ft].
W_extra (float) – Extra width to be included in piping for each of the reactor, [ft].
pipe_density (float) – Density of the pipe, [kg/ft3].
pipe_unit_cost (float) – Unit cost of the pipe, [USD/kg].
TDH (float) – Total dynamic head for the blower, [psi].
eff_blower (float) – Efficiency of the blower in fraction (i.e., 0.7 for 70%).
eff_motor (float) – Efficiency of the motor in fraction (i.e., 0.7 for 70%).

References