Separation of oil dispersions from water by fibrous bed coalescence

Abstract

Iecently, the treatment of oily effluents in inland water-'-ways and coastal waters has become an urgent problem. Aqueous effluents from many industries-chemical, petroleum, and metallurgical-often contain oily material. These oily materials may be present as a film on the water surface or in the form of a dispersion with water. They may have some of the soluble substances extracted by water, and finally form semisolid deposits of oil and sediment.

Separation of oil from oil-in-water mixtures by flow through glass bead beds.

“…The sample was prepared beforehand by dispersing heavy oil into water, using a homogenizer, and the oil concentration was adjusted to 1000 ppmin the mixing tank (1). Then the mixture was forced through the system using the pump (1) at a constant flow rate which was controlled with the flow meter (6). As the mixture passed through the bed, the oil droplets in the mixture could be caught on the packing media and coalesce with each other in the bed to form larger drops of oil.…”

Effect of the Mixed Oleophilic Fibrous Coalescer Geometry and the Operating Conditions on Oily Wastewater Separation

“…These methods can separate free and dispersed oil droplets in wastewater efficiently and economically. However, for emulsion oil droplet separation, these methods have several intrinsic disadvantages, such as low efficiency, high operation cost, large occupied areas, corrosion, and recontamination problems [17,18]. American Petroleum Institute (API) separators [19] and dissolved air flotation (DAF) devices [20] are used to remove free and dispersed oils from wastewater, respectively.…”

Stereoselective Synthesis of P‐Stereogenic N‐Phosphinyl Compounds

“…These methods can separate free and dispersed oil droplets in wastewater efficiently and economically. However, for emulsion oil droplet separation, these methods have several intrinsic disadvantages, such as low efficiency, high operation cost, large occupied areas, corrosion, and recontamination problems 17, 18. American Petroleum Institute (API) separators 19 and dissolved air flotation (DAF) devices 20 are used to remove free and dispersed oils from wastewater, respectively.…”