Waste Water Industry
Waste water from Sea Food Waste Water Industry handling
setups can be very high in BOD (bio-chemical oxygen demand), FOG (Fat, oil and
grease) & dewatering. Dissolved air flotation and flocculation is the
key component of the sea food wastewater
treatment plant. Sea food processing plants yield waste water holding a large amount of pollutants which are soluble,
colloidal and in particulate forms. dewatering
sludge depends on the process. Dissolved Air Flotation
is extremely prevalent waste water
treatment process usedby a large number of industries such as petrochemical
and chemical plants, papermills, refineries, hospitals, etc. This DAF technique is used in order to
remove pollutants loads in the waste water before discharging it in the
mainstreams. These pollutants can be termed as BOD, COD, fat oils, grease,
chemicals, pharmaceuticals, suspended solids, etc. DAF water treatment removes pollutantsby clearing the water by
eradicating suspended solids.
For sea food processing waste water treatment, the main
treatment procedures are:
·
Equalization- Appropriate equalization of an industrialized
effluent can deliver a more persistent and uniform flow to the DAF unit. This
can improve the efficiency of the chemical treatment processdone for
coagulation and flocculation before DAF.
·
Screening- The elimination of comparatively big
solid wastes (approx. 0.8 mm or bigger) can be attained by screening. Screening
is one of the economical and modest waste water treatment process utilized in
food processing plants.
·
Coagulation and Flocculation- Coagulation,
flocculation and flotation are one the most influential tactics to eliminate
fats oils and grease, colloidal materials and suspended solids from any food
processing wastewater.
·
The pH adjustment
·
Flotation-the Dissolved
Air Flotation system in practice uses chemical pre-treatment and micro air
bubbles to discrete pollutants from waste water. Pre-treatment of waste water
drops TSS (total suspended solids), greases & oil, BOD (bio-chemical oxygen
demand), and metal absorptions. More or less DAF clarified waste is
re-circulated and super- saturated under high pressure air technique. When this
pre-treated water is discharged into the skimming tank under environmental
state of affairs, micro bubbles are created and then they bring the suspended
solids to the surface for exclusion.
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