Sedimentation Tank

A sedimentation tank of an AguaClara water treatment plant

Example:
>>> from aguaclara.design.sed_tank import *
>>> sed_tank = SedimentationTank(q = 60 * u.L / u.s)
>>> round(sed_tank.diffuser_hl, 5)
<Quantity(0.00926, 'centimeter')>
class aguaclara.design.sed_tank.SedimentationTank(**kwargs)[source]

Design an AguaClara plant’s sedimentation tank.

An sedimentation tank’s design relies on the sedimentation channel’s design in the same plant, but assumed/default values may be used to design an sedimentation tank by itself. To design these components in tandem, use aguaclara.design.sed.Sedimentor.

Constants:

  • INLET_MAN_Q_RATIO (float): The ratio of the flow in the inlet manifold.

  • OUTLET_MAN_HL (float * u.cm): The headloss of the outlet manifold

  • JET_REVERSER_ND (float * u.inch): The nominal diameter of the jet reverser.

  • JET_PLANE_RATIO (float): The ratio for the jet plane

  • JET_REVERSER_TO_DIFFUSERS_H (float * u.cm): The height between the jet reverser and diffusers.

  • WALL_THICKNESS (float * u.m): The thickness of the sed tank walls

  • DIFFUSER_L (float * u.cm): The length of a diffuser.

Design Inputs:

  • q (float * u.L / u.s): Plant flow rate (recommended, defaults to 20L/s)

  • temp (float * u.degC): Water temperature (recommended, defaults to 20°C)

  • vel_upflow (float * u.mm / u.s): Upflow velocity (optional, defaults to 1mm/s)

  • l_inner (float * u.m): The inner length (optional, defaults to 5.8m)

  • w_inner (float * u.inch): The inner width (optional, defaults to 42in.)

  • diffuser_vel_max (float * u.cm / u.s): The max velocity of a diffuser (optional, defaults to 44.29 cm/s)

  • diffuser_n (int):The nunber of diffusers (optional, defaults to 108)

  • diffuser_wall_thickness (float * u.inch): The thickness of the wall of a diffuser (optional, defaults to 1.17in.)

  • diffuser_sdr (int): The standard dimension ratio of a diffuser (optional, defaults to 41)

  • inlet_man_hl (float * u.cm): The headloss of the inlet manifold (optional, defaults to 1cm)

  • inlet_man_sdr (float): The standard dimension ratio of the inlet manifold (optional, defaults to 41)

  • jet_reverser_sdr (int): The standard dimension ratio of the jet reverser (optional, defaults to 26)

  • plate_settler_angle (float * u.deg): The angle of the plate settler (optional, defaults to 60°)

  • plate_settler_s (float * u.cm): Spacing in between plate settlers (optional, defaults to 2.5cm)

  • plate_settler_thickness (float * u.mm): Thickness of a plate settler (optional, defaults to 2mm)

  • plate_settler_cantilever_l_max (float * u.cm): The max length of the plate settler cantilever (optional, defaults to 20cm)

  • plate_settler_vel_capture (float * u.mm / u.s): The capture velocity of a plate settler (optional, defaults to 0.12mm/s)

  • outlet_man_orifice_hl (float * u.cm): The headloss of the orifices in the outlet manifold (optional, defaults to 4cm)

  • outlet_man_orifice_q_ratio_max (float): The max ratio of the flow rate for the orifices of the outlet manifold (optional, defaults to 0.8)

  • outlet_man_orifice_n_est (int): The estimated number of orifices for the outlet manifold (optional, defaults to 58)

  • outlet_man_sdr (int): The standard dimension ratio of the outlet manifold (optional, defaults to 41)

  • slope_angle (float * u.deg): The angle at the bottom of the sed tank (optional, defaults to 50°)

  • side_slope_to_floc_weir_h_min (float * u.cm): The minimum height between the side slope and the floc weir. (optional, defaults to 5cm)

  • sed_chan_w_outer (float * u.cm): The outer width of the sedimentation channel (optional, defaults to 60cm)

  • sed_chan_weir_thickness (float * u.cm): The thickness of the sedimentation channel weir (optional, defaults to 5cm)

  • floc_weir_to_plate_frame_h (float * u.cm): The height from the top of the floc weir to the plate settler frame (optional, defaults to 10cm)

  • hopper_slope_vertical_angle (float * u.deg): The angle of the hopper wall slopes to vertical (optional, defaults to 60°)

property q_tank

The flow rate present in the tank.

property diffuser_hl

The headloss of the diffuser.

property diffuser_vel

The velocity of the diffuser

property diffuser_w_inner

The inner width(neglecting walls) of the diffuser.

property diffuser_a

The area of the diffuser

property inlet_man_v_max

The maximumum velocity in the inlet manifold.

property inlet_man_nd

The nominal diameter of the inlet manifold

property outlet_man_nd

The nominal diameter of the outlet manifold.

property outlet_man_orifice_d

The diameter of the orifices in the outlet manifold.

property plate_l

The length of a plate in the plate settlers.

property outlet_man_orifice_q

The flow rate in the orifices of the outlet manifold.

property outlet_man_orifice_spacing

The spacing between orifices on the outlet manifold.

property outlet_man_orifice_n

The number of orifices on the outlet manifold.

property outlet_orifice_hl

The headloss for the orifices of the outlet

property side_slopes_w

The width of the side slopes.

property side_slopes_h

The height of the side slopes.

property inlet_man_h

The height of the inlet manifold height.

property floc_weir_h

The height of the floc weir.