Recommendations
SALUTAR anaerobic filterDisc filtration system HidrosoloUASB reactor: volume determinationAnaerobic lagoonFacultative pond: Mara methodBOD and COD removal efficiencies in aerated submerged biofilters

Facultative pond: method based on surface load application rate

Input data

Average flow

Inlet BOD

Depth

Superficial area

Output data

Suggested area

Influent BOD Load

Load applied to the pond

Volume of the pond, disregarding the slopes

Resulting detention time

Description

Given the average incoming flow and BOD, the average depth of the pond and the the climate and insolation type, suggests the average area that should be adopted, calculates the volumetric organic loading rate, the volume of the pond, the detention time and the resulting organic volumetric load.

PondPond

GRADES

  1. Recommendations for surface application rate:

    Option
    Type of climate and insolation
    Rate, kg BOD/ha.d
    1
    Hot winter and high insolation
    240 to 350
    2
    Winter and moderate insolation
    120 to 240
    3
    Cold winter and low insolation
    100 to 180

  2. L/B Ratio: 2 ≤\le L/B ≤\le 5

  3. The surface of an optional lake must be less than 15 ha.

  4. Depth y: 1.20 m ≤\le y ≤\le 2.00 m; larger values are recommended.

  5. Organic load application rate:

    ≥ \ge 100 g BOD/m³.d and ≤ \le 400 g BOD/m³.d

    Higher loads are applicable to higher temperature conditions.

References

  • Jordão, Eduardo P., Pessôa, C. A. Tratamento de esgotos domésticos. 7. Ed. Rio de Janeiro, ABES, 2014.