Unit processes in system

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Presentation transcript:

Unit processes in system TVM 4145 Vannrenseprosesser / unit processes Unit processes in system Prof. TorOve Leiknes torove.leiknes@ntnu.no

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

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

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

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

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