Oily wastes

Improved Operating Procedures 11. Segregate process waste waters from stormwater systems. 12. Optimize the frequency of tank and equipment cleaning. 13. Prevent solids and oily wastes from entering the drainage system. 14. Establish and maintain an emergency preparedness and response plan. 

Polyamine/DADMAC (polydiallyldimethylammonium chloride) Cationic coagulant. Also generally supplied as solution liquids in ranges from 40 to 70% active strength. Low MW, from 0.25 to 0.75M. Useful for reclaiming oily waste waters typically use at 150 to 300 ppm. 

Ultrafiltration (UF) is used for the separation and concentration of macromolecules and colloidal particles. Ultrafiltration membranes usually have larger pore sizes than RO membranes, typically 1 to 100 nanometer (nm). Operating pressures are generally low (30-100 psig). Applications include electropaints, gray water, emulsions, oily wastes, and milk, cheese, and protein processing. 

Fernandez, D., Rodriguez, E., Bassas, M., Vinas, M., 2005. Agro-industrial oily wastes as... 

M. J. Pitts, K. Wyatt, T. C. Sale, and K. R. Piontek. Utilization of chemical-enhanced oil recovery technology to remove hazardous oily waste from alluvium. In Proceedings Volume, pages 33-44. SPE Oilfield Chem Int Symp (New Orleans, LA, 3/2-3/5), 1993. 

A. Sivakumar and M. Ramesh. Demulsification of oily waste waters using silicon containing polymers. Patent US 5560832, 1996. 

Segregated oily wastewater is defined as oil waste collected from machine sumps and process tanks. The water is segregated from other wastewaters until it has been treated by an oily waste removal system. Of the plants, 12.4% are known to segregate their oily wastes. The average contribution of these wastes to the total plant wastewater flow is 6.6% (range of approximately 0.0-55.4%). 

Pollutant parameters and their concentrations found in the oily waste subcategory streams are shown in Table 9.9. The oily waste subcategory for the metal finishing industry is characterized by both concentrated and dilute oily waste streams that consist of a mixture of free oils, emulsified oils, greases, and other assorted organics. Applicable treatment of oily waste streams is dependent on the concentration levels of the wastes, but oily wastes normally receive specific treatment for oil removal prior to solids removal waste treatment. 

Option 3 All of Option 2 plus ultrafiltration and carbon adsorption for oily waste, zero discharge of any processes using either cadmium or lead by using an evaporative system. 

Method. Emulsion broken by mixing oily waste with alum and a chemical emulsion breaker, followed by gravity oil separation in a tank. 

Method The process used for oily waste stream after emulsion breaking-gravity oil separation. System component Filter modules sized on the basis of hydraulic loading of 1 L/min/m2. 

Method A packed-bed throwaway system to remove organic pollutants from oily waste stream. System component A contactor system, and a pump station designed for a contact time of 30 min and hydraulic loading of 162 L/min/m2 (4gpm/ft2). 

It removes large portions of oily waste accumulations. 

It reduces the volume, mobility, and toxicity of oily wastes. 

A process oily water sewer system is a convenient location to direct oily wastes. The oily water system normally collects into a sump. If several lines connect into a common header, care should be taken to prevent backflow into another outlet source. In such cases use of an air gap, i.e., drainage in to a collection ftinnel has be advantageous. 

Konicka-Wocial, E., Usydus, Z., Bykowski, P. Attempt to Using Thermal Spills from Fish Processing for Fodder, in International Conference on Analysis and Utilization of Oily Wastes AUZO 96, Gdansk, 1996,43-48. 

M drzycka, K., Szczesiul, J., Possibility of using oily waste from coagulation of fish processing waste for fodder, International Conference on Analysis and Utilisation of Oily Wastes AUZO 96, Gdansk, 1996, Materialy Konferencyjne, 145-150. 

Segregate oily wastes to reduce the quantity of oily sludge generated and increase the potential for oil recovery. 

Use oily waste sludge as feedstock in coking operations. 

Juvonen, R. Martikainen, E. Schultz, E. Joutti, A. Ahtiainen, J. Lehtokari, M. A battery of toxicity tests as indicators of decontamination in composting oily waste. Ecotox. Environ. Safe. 2000, 47, 156-166. 

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