1. Unit processes in system
TVM 4145 Vannrenseprosesser / unit processes
Unit processes in system
Prof. TorOve Leiknes

2. Unit processes in system
Drinking water treatment:
Wastewater treatment :
chemical precipitation
biofilm processes
coagulation / direct filtration
ion exchange
adsorption
membrane filtration
sludge managemetn
pretreatment / mechanical
chemical treatment
biological treatment
- aerobic / anaerobic
- suspensions / biofilms
biological/chemical treatment
nutrient removal (N, P)
sludge management

3. Drinking water treatment:
Flow chart example – flotation-filter:

4. Wastewater treatment:
Pretreatment (mechanical treatment):
grids / sieves
grit chambers
Chemical
Pre-sedimentation
Chemical treatment:

5. Biological treatment: aerobic processes anaerobic/anoxic processes
1. Activated sludge:
2. Biofilm systems:
Bio-rotor
Bio-filter

6. Biological/chemical treatment:
Bio-reactor
Chem.
1. Pre- sedimentation:
Bio-reactor
Chem.
2. Simultaneous:
Bio-reactor
Chem.
3. Post-sedimentation: