| abstract |
The present invention is a method of removing ammonium from the dewatered sludge discharged from an anaerobic digestion facility that treats organic waste and converts it to sludge (microorganism) by chemical treatment, a) bicarbonate (HCO) in the dewatered filtrate. 3) a first stage to remove converted to carbon dioxide (carbonic acid, H 2 CO 3 ); b) a second step of converting and discharging ionic ammonium (NH 4 + ) into gaseous ammonia (NH 3) in the dehydration liquid passed through the first step; And c) a third step of neutralizing the dehydration liquid passed through the second step, and an apparatus used therefor. In the case of chemical treatment methods including acidification, alkalinization, and neutralization, high chemical treatment efficiency, that is, ammonium removal efficiency, can be achieved while optimizing the amount of chemicals required. For other biological treatment efficiency can also be greatly improved. |