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Given the incoming average and maximum flow, the incoming BOD, the number of filters, the geometric characteristics of each filter and the recirculation flow, calculates the treatment efficiency and the effluent BOD.

Support environment | Rocks | Plastic |
---|---|---|

Number | 1 | 2 |

Hidraulic load minimum (m³/m².day) | 10 | 10 |

Hidraulic load maximum (m³/m².day) | 50 | 75 |

Organic load (kg BOD/m³.day) | <1.2 | <3.0 |

Minimum depth (m) | 1.5 | 4 |

Maximum depth (m) | 2.5 | 12 |

Minimum recirculation ratio | 1 | 1 |

Maximum recirculation ratio | 2 | 3 |

Minimum efficiency of BOD removal (%) | 80 | 80 |

Maximum efficiency of BOD removal (%) | 90 | 90 |

Given the incoming average and maximum flow, the incoming BOD, the number of filters, the geometric characteristics of each filter and the recirculation flow, calculates the treatment efficiency and the effluent BOD.

Support environment | Rocks | Plastic |
---|---|---|

Number | 1 | 2 |

Hidraulic load minimum (m³/m².day) | 10 | 10 |

Hidraulic load maximum (m³/m².day) | 50 | 75 |

Organic load (kg BOD/m³.day) | <1.2 | <3.0 |

Minimum depth (m) | 1.5 | 4 |

Maximum depth (m) | 2.5 | 12 |

Minimum recirculation ratio | 1 | 1 |

Maximum recirculation ratio | 2 | 3 |

Minimum efficiency of BOD removal (%) | 80 | 80 |

Maximum efficiency of BOD removal (%) | 90 | 90 |

- Jordão, E. P.,Pessôa, C. A. Tratamento de esgotos domésticos.7. Ed. Rio de Janeiro: ABES, 2014.