Product Short Description: When the issue is the removal of oil and suspended solids from difficult water streams, the Nutshell Filter often represents the most efficient and reliable treatment technology. Product Description: When the issue is the removal of oil and suspended solids from difficult water streams, the Nutshell Filter often represents the most efficient and reliable treatment technology.Nut Shell filtration is a water polishing technology used to remove hydrocarbon liquids from water down to very low concentrations (in some cases <3 ppm). With the tightening of environmental standards and more stringent client requirements, the oil removal technologies previously used do not always meet the standards required resulting in the installation of technologies like Nut Shell Filters. SIZE - 0.85 ~ 1.7