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scabitone emulsion
scabitone emulsion
Senast uppdaterad: 2019-01-03
Användningsfrekvens: 1
Kvalitet:
Referens:
based on your knowledge on emulsions, surfactants and emulsion breakers mechanism and its important factors, explain how the above method works.
berdasarkan pengetahuan anda mengenai mekanisme emulsi, surfaktan dan pemutus emulsi dan faktor pentingnya, terangkan bagaimana kaedah di atas berfungsi.
Senast uppdaterad: 2020-06-11
Användningsfrekvens: 1
Kvalitet:
Referens:
33.1 introduction 33.1.1 application and purpose oil separation devices are applicable for stormwater runoff from areas where hydrocarbon products are handled or where small spills routinely fall on paved surfaces exposed to rain. the objective of the oil separators is to treat most of the flow (90 to 95%) from a potentially contaminated catchment to an acceptable degree (10 – 20 mg/l oil and grease) and to remove free floating oil. in addition to collecting oil, which rises to the surface, separators collect sediment, which falls to the bottom of the devices. in fact, the sediment is likely to contain petroleum products, which are attached to fine sediments. oil separation devices sized in accordance with the guidelines in this chapter will achieve a sufficient degree of sedimentation so further sedimentation devices would not be required. oil in general urban stormwater runoff is likely to be in the form of an emulsion, which is intimately mixed with the water. such oil will not readily float out, so oil separators are not used for treatment of general urban runoff. oil separators need to treat only the stormwater runoff from oily areas or areas which may become oily. general stormwater runoff from other areas should be routed away from the separator and treated for sediment removal in the usual fashion. treatment should be as close to the source of the oil-generating activities as possible. high rates of runoff and practical limitations on the treatment process mean that oil separators can only be used for small catchment areas. for malaysian conditions the practical maximum catchment area that can be treated is in the order of 1000 m2 ( 0.1 hectare).
coil