Five cosmetics wastewater samples were treated by Dissolved Air Flotation (DAF) assisted by coagulation. Different aluminum based coagulants were used: (Al2(SO4)3, Al 1019, Al 3010, Al 3030, Al 3035, PAX 16 and PAX 19). The raw wastewater COD values were in the range 285-2124 mg/l. The efficiency of DAF depended on different coagulants and production profi le of factory. COD removal was varied from 11.1 to 77.7%. The efficiency of coagulants was similar during treatment of particular sample. The best results were obtained with Al2(SO4)3 and for sample 5 - lotions and shampoos production. The wastewater from UV fi lter creams production (sample 4) was resistant to treatment by DAF regardless of used coagulant. HS-SPME-GC-MS analysis can be a confirmation of DAF effectiveness

Exploited lubricants are dangerous contaminants because of their toxicity and low biodegradability. In this study, microbial culture active in exploited lubricant oil Mobil I was isolated and inoculated to sandy soil containing 0.5 g of contaminant per 100 g of dry soil. Microorganisms were used as free cells and immobilizate on wood chips, soil was also properly supplied with water and nutrients. The bioaugumantation seems to enhance biodegradation process. After 5 months, 93% of non-polar compounds were eliminated from soil containing immobilized biomass. Comparatively, in non-treated soil (control system) the contaminant elimination was at the level of 47%. Bacterial number in treated and non-treated soil was similar for about 3 months; however enzymatic activity (dehydrogenascs and hydrolascs) in control soil was much lower. Finally, after 5 months of treatment the content of bacteria active in contaminant decomposition in inoculated soil was 100-fold higher than in control system. Presumably, the main reason of low remediation results in non-treated soil seems to be low enzymatic activity of the biomass.