Case Study, Landfill Leachate treatment
After dose nitrifying and denitrifying bacteria, denitrifying tank ammonia reduction efficiency reach to 89.94%;
Nitrifying tank ammonia reduction efficiency reach to 95.99%
Aeration tank ammonia reduction efficiency reach to 97.87%
Nitrifying bacteria and denitrifying bacteria can tolerance 700 mg/L high ammonia parameters.
Flow rate: Landfill Leachate 80 ~100 cmd /day;
Raw Water NH4-N : 1,580 mg/L, Nitrifying tank NH4-N: 700 mg/L;
Flow Diagram: EQ tank > Denitrifying tank > Nitrifying tank > Aeration tank > Sediment > UF > RO
System with high level ammonia nitrogen, incompliance with discharge limited standard.
Client would like to reduce ammonia nitrogen below 25 mg/L.
Site visit to get detail information;
Get raw water from nitrifying tank for lab testing;
Suggest to use Nitrifying bacteria + Denitrifying bacteria to reduce ammonia nitrogen,
Date | Denitrifying tank | Nitrifying tank | Aeration tank |
Before dosing | 688 mg/L | 639 mg/L | 629 mg/L |
1st day | 405 mg/L | 258 mg/L | 237 mg/L |
5th day | 225.9 mg/L | 205.4 mg/L | 203.1 mg/L |
7th day | 197.3 mg/L | 86.7 mg/L | 68 mg/L |
9th day | 167 mg/L | 60.8 mg/L | 55.9 mg/L |
15th day | 241.5 mg/L | 56.5 mg/L | 30.8 mg/L |
20th day | 69.2 mg/L | 25.6 mg/L | 13.4 mg/L |
