Grade fina mecanizada tipo escalar

Downflow

The **thin mechanized step screen** is designed for debris removal in hydraulic flows, using calculation methods based on variables like flow rate and specific channel geometries.

Parameter | Standard Units | Description |
---|---|---|

Flow | m³/s | Volume of water passing through the section |

Width (b) | m | Channel width |

Trashrack width (W) | m | Thickness of the trashrack bar |

Distance between trashracks (d) | m | Spacing between the bars |

Downflow level (y) | m | Water level at the downstream side |

Inclination (º) | º | Angle of the bars relative to the flow |

β - Kirschmer | - | Kirschmer coefficient for calculation |

Parameter | Standard Units | Description |
---|---|---|

Upflow level (ym) | m | Water level at the upstream side |

Upflow velocity (Um) | m/s | Velocity of flow at the upstream side |

Energy (Em) | J | Energy associated with the upstream flow |

Velocity between bars (Ubb) | m/s | Flow velocity between the trashrack bars |

Head loss (Hl) | m | Pressure drop or head loss |

Upflow level at 50% (ym50) | m | Upstream level calculated with 50% of the flow |

Upflow velocity at 50% (Um50) | m/s | Upstream velocity at 50% of the flow |

Velocity between bars at 50% (Ubb50) | m/s | Velocity between bars with 50% of the flow |

Upflow energy at 50% (Em50) | J | Energy with 50% of the flow |

Head loss at 50% (Hl50) | m | Head loss with 50% of the flow |

Flow output (Qout) | m³/s | Volume of water exiting the system |

The **thin mechanized step screen** is designed for debris removal in hydraulic flows, using calculation methods based on variables like flow rate and specific channel geometries.

Parameter | Standard Units | Description |
---|---|---|

Flow | m³/s | Volume of water passing through the section |

Width (b) | m | Channel width |

Trashrack width (W) | m | Thickness of the trashrack bar |

Distance between trashracks (d) | m | Spacing between the bars |

Downflow level (y) | m | Water level at the downstream side |

Inclination (º) | º | Angle of the bars relative to the flow |

β - Kirschmer | - | Kirschmer coefficient for calculation |

Parameter | Standard Units | Description |
---|---|---|

Upflow level (ym) | m | Water level at the upstream side |

Upflow velocity (Um) | m/s | Velocity of flow at the upstream side |

Energy (Em) | J | Energy associated with the upstream flow |

Velocity between bars (Ubb) | m/s | Flow velocity between the trashrack bars |

Head loss (Hl) | m | Pressure drop or head loss |

Upflow level at 50% (ym50) | m | Upstream level calculated with 50% of the flow |

Upflow velocity at 50% (Um50) | m/s | Upstream velocity at 50% of the flow |

Velocity between bars at 50% (Ubb50) | m/s | Velocity between bars with 50% of the flow |

Upflow energy at 50% (Em50) | J | Energy with 50% of the flow |

Head loss at 50% (Hl50) | m | Head loss with 50% of the flow |

Flow output (Qout) | m³/s | Volume of water exiting the system |

- WEF, ASCE, EWRI (2010). Design of municipal wastewater treatment plants. Volume 2: liquid treatment processes. New York, McGraw Hill.