Shortcuts
Contact

Veolia Water Solutions & Technologies
L'Aquarène
1 place Montgolfier
94417, Saint Maurice
France

Tel: +33 (0)1 45 11 55 55
Fax: +33 (0)1 45 11 55 80

Multi-local Presence

Veolia Water Solutions & Technologies is made of 135 business units worldwide

Bongrain, Sedlcany - Czech Republic

Bongrain is focused on cheese and dairy specialities and is one of the world's foremost processors of milk.

Our client

Bongrain collects more than 3 billion litres of milk for its activities.

The Group is the 4th largest cheese producer in the world, with 77 production sites in 26 countries.

Client's needs

The client wanted to improve the treatment efficiency of the existing industrial wastewater pre-treatment plant to maintain the effluent standard requirements.

Our solution

Veolia Water Solutions & Technologies offered a "turnkey" design & build solution in order to improve the efficiency of the existing industrial wastewater pre-treatment plant.

Solutions & technologies

Veolia Water Solutions & Technologies refurbished the existing industrial wastewater pre-treatment plant to attain a treatment capacity of 800 m3/d.

The project covered both the wastewater and sludge treatment lines and includes the installation of:

  • Buffer tanks
  • Flotation unit
  • Floated sludge treatment

Technical data

Design capacity: 800 m3/d

Pre-treatment

  • Screening, mesh spacing 10 mm
  • Buffer tank, 2 x 150 m3

Flotation step

  • Flocculation tank with agitator, operating volume 6 m3
  • Dissolved Air Flotation(DAF) unit, flow 40 m3/h

Floated sludge treatment

  • Floated sludge storage tank, volume 77 m3
  • Intermediary tank with polymer dosing, volume 1.5 m3
  • Dewatering table, capacity 5 m3/h
  • Dewatered sludge storage tank, 50 m3

Results

Wastewater characteristics Process guarantees

COD : 2,829 mg/l 

COD ? 1,625 mg/l

BOD5 : 2,114 mg/l

BOD5 ? 875 mg/l

SS : 640 mg/l 

SS ? 400 mg/l

N-NH4 : 15 mg/l

N-NH4 ? 21 mg/l

Ntotal : 65 mg/l 

Ntotal ? 62 mg/l

Ptotal : 19 mg/l

Ptotal ? 3.5 mg/l

Top of the page