ATT & AT d.o.o. can offer quality engineering solutions for industrial wastewater treatment. Process wastewater treatment plants are designed according to the requirements of production, investors, and the required output parameters of purified water. In wastewater of seafood, special attention should be paid to the high concentration of chlorides, because chlorides act very aggressively and it is necessary to choose high-quality equipment resistant to the aggressive effects of chloride in wastewater. Wastewater treatment from the fish industry consists of a combination of mechanical pre-treatment and physico-chemical treatment. The device consists of: pump shaft, fine mechanical treatment, aerated equalization tank, flotation device DAF (dissolved air flotation), a dosing station for chemicals, pipe flocculator, sludge tank, the station for automatic preparation and dosing of polyelectrolyte, and purified water tank. The treatment process can be adjusted at any time by means of control units installed in the facility in which the process wastewater treatment plant is located.
Input parameters:
• amount of wastewater per day: 10 m3/day
• COD: 5420 mg/l
• BOD: 3760 mg/l
• pH: 6,73
• Chlorides: 9670 mg/l
Required output parameters:
• COD: 700 mg/l
• BOD: 250 mg/l
• pH: 6.5-9
• Chlorides: 250 mg/l
Wastewater treatment plant consists of:
• pump shaft
• fine mechanical treatment
• aerated equalization tank
• flotation device DAF (dissolved air flotation)
• dosing station for chemicals
• pipe flocculator
• aerated sludge tank
• automatic polyelectrolyte preparation and dosing station
• purified water tank




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