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Aeration & Oxygenation systems

Environmental & sustainable water treatment to save the planet

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Aeration Oxygenation and Water Treatment

Leachate home

Nutrient balance in leachate & wastewater
Relationship between Ammonium, BOD, Phosphate and alkalinity

Kgs of component required

Ammonium nitrogen 1kg COD/BOD 1 kg Phosphate 1kg
Oxygen required in Kg
( 1 x diffuser 6.2.10, provides 10kg of oxygen per day)

5 Kg

2 Kg

***
Ammonium nitrogen consumed in Kg

***

0.1 Kg

10 Kg
COD/BOD consumed in Kg

10 Kg

***

100 Kg
Phosphate required in kG

0.1 Kg

0.01 Kg

***
Alkalinity required
Buffers to provide pH and alkalinity stability are available from Dryden Aqua. We also provide molasses to assist heterotrophic bacterial assimilation of ammonium.  This is normally required when the leachate temperature is below 8 deg C.

Sodium hydroxide, or

4 kg (12 litres)

Sodium bicarbonate, or

12 kg

Calcium carbonate, or

7 kg

Magnesium oxide

3 kg
Nitrification equations
Alkalinity buffering equation
1. H20 + CO2 <=> H2CO3 <=> HCO3 + H+ <=> CO3 + 2H+
Nitrification equations
2. NH4+ + 1.5O2 => 2H+ + 2H2O + NO2-
3. NO2- + 0.5O2 => NO3-
4. NH4+ + 1.83 O2 + 1.98 HCO3- => 0.021 C5H702N + 0.98 NO3- + 1.041 H2O + 1.88 H2CO3-
5. NH4+ + 1.9O2 + 2HCO3- => 1.9 CO2 + 2.9 H2O + 0.1 CH2
from 1 gram of ammonium.
8.59 grams of carbonic acid is produced (H2CO3)
0.17 grams of autotrophic nitrifying bacteria cells are produced.