AS-FLOT 0,5 - 5

Photo: AS-FLOT  0,5 - 5

The principle of the flotation technology marketed under the AS-FLOT trade name is based on a separation process that is employed to separate dispersed particles (solids or grease) from a liquid. During flotation, pollution particles agglomerate with air micro-bubbles producing flotation foam, which is lighter than water. The foam rises to the flotator surface, from where it is withdrawn to a storage tank.

Wastewater contains specific dissolved organic pollution that is manifested in high concentrations of the BOD5, COD, extractable substance, and solid substance indicators. The temperature also shows high fluctuations, mainly in water from meat production. Depending on the requirements for output parameters, we are able to design, deliver, and ensure the assembly and operation of not only mechanical pre-treatment, but also biological after-treatment. Biological after-treatment is applied in cases when water should be released into a recipient. Sewage is not subject to mechanical pre-treatment - flotation. After separate mechanical pre-treatment, it is directly routed to the activation part of the WWTP.

Application:

  • Meat processing industry
  • Cattle slaughtering
  • Fish processing
  • Dairies
  • Cheese plants
  • Breweries
  • Production of potato chips

Advantages:

  • Low investment costs
  • Quick installation
  • Economical operation
  • Low coagulant and flocculant consumption at maximum efficiency
  • High effectiveness and reliability and long service life
  • Low operating costs

Table: Limits of monitored indicators

Average pollution of wastewater from the food-processing industry Assumed requirements for water released into the public sewerage system (prescribed by the Sewerage Rules)
Indicator mg/l Average [mg/l] Maximum [mg/l] Requirement for effectiveness [%]
BOD5 2500 750 1000 70
COD 4000 1600 2400 60
Solids 2500 500 800 80
Extractable substances 1000 50 100 90

 

Parameters of the complete mobile flotation system AS-FLOT flotation type
Parameters Units 0,5 1 1,5 2 2,5 3 3,5 4 4,5 5
Max. flow m³ / h 0,5 1 1,5 2 2,5 3 3,5 4 4,5 5
Daily flow m³ / day 4 8 12 16 20 24 28 32 36 40
Useful flotation volume 0,3 0,5 0,75 1 1,25 1,5 1,75 2 2,25 2,5
Useful flotation area 0,60 0,70 1,00 1,30 1,60 2,00 2,30 2,65 3,00 3,30
Installed power input kW 13,36 13,36 13,36 13,48 13,48 13,48 13,48 13,66 13,66 13,66
Foam and sludge production m³ / day 0,12 0,24 0,36 0,48 0,6 0,72 0,82 0,96 1,08 1,2
Pumping sump volume 0,8 0,8 0,8 0,8 0,8 0,8 0,8 0,8 0,8 0,8
Accumulation tank volume 0,75 1,5 2,25 3 3,75 4,5 5,25 6 6,75 7,5
Sludge tank volume 3,5 3,5 3,5 5 5 8 8 11 11 11
Coagulant consumption l/h  (l/den) 0,25 / (2) 0,5 / (4) 0,75 / (6) 1 / (8) 1,25 / (10) 1,5 / (12) 1,75 / (14) 2 / (16) 2,25 / (18) 2,5 / (20)
Flocculant consumption l/h  (l/day) 0,5 / (4) 1 / (8) 1,5 / (12) 2 / (16) 2,5 / (20) 3 / (24) 3,5 / (28) 4 / (32) 4,5 / (36) 5 / (40)
Neutralizer consumption l/h  (l/day) 0,1 / (0,4) 0,2 / (1,6) 0,3 / (3,6) 0,4 / (6,4) 0,5 / (10) 0,6/(14,4) 0,7 / (20) 0,8 / (25) 0,9 / (32) 1 (40)
Built-up area L x W m 4 x 3,5 4 x 3,5 5 x 4 5 x 4 6 x 4 6 x 4 7 x 4 7 x 4 8 x 4 8 x 4
Container type   15´ 15´ 17´ 17´ 20´ 20´ 20´ 20´ 20´ 20´