Providing Sustainable Green Technology Solutions
After Flocculation in the Chemical Reaction Chamber
Filtration Unit with Chemical Reaction Chamber Set Up
Some scientific backdrop references from academic studies on the subject of treating oily Effluent:
Kurian and Natarajan (1997) studied 40 samples from 10 automobile service stations and found total suspended solids, BOD 5, COD and oil and grease concentration in the range of 610– 4950 mg/L, 75 – 570 mg/L, 270 – 1640 mg/L and 14 – 420 mg/L respectively.
Characterization of Wastewater Different parameters like pH, Total solid, Total suspended solid, COD and Oil and Grease of the sample were measured from samples collected from other similar sources of car washing facilities.
Chemical treatment of the representative sample of such wastewater with alum and chitosan resulted in the effluent quality, satisfactory for disposal into the municipal sewer.
In another instance the researchers had the composite oily wastewater first treated by using coagulants like alum, PAC, FeSO4 and CaCl2 .
The results showed that removal is feasible for initial oil concentration in the range of 300 –600 mg/L for the alum dose of 100 -400 mg/L, alum + Bentonite dose of 20 -250 mg/L and FeSO4 dose of 50 - 200 mg/L.
Ahmed et al. (2005) carried out a study with Palm oil mill effluent (POME) containing about 4000 mg/l of residual oil using three types of adsorbents – Chitosan, Activated carbon and Bentonite.
Chitosan showed the best removal compared to the other adsorbents.Chitosan, activated carbon and Bentonite at the dosages of 0.5 gm, 8.0 gm and 10 g/L respectively, had successfully removed 99% of residual oil from POME.
Effluent Treatment Plant (ETP) For Car Wash & Other Oily Wastewater/Effluent
Schematic Diagram of Effluent Treatment Plant for Car Wash Wastewater, providing Reusable Water.
Similar approach is taken for Hotel & Restaurant Effluent and other oily wastewater generating industries.