Provided is a toothed drum type oil recovery device, which includes: a recovery drum having a center coupled to a rotary shaft and having a plurality of tooth units formed around an outer circumference thereof, wherein one side of the recovery drum is disposed in the water to which oil is spilled so that the oil is recovered by the tooth unit at one side of the recovery drum according to the rotation; and a separation unit containing an oil separating liquid and disposed at the other side of the recovery drum, wherein when the tooth unit moves onto the oil separating liquid at the other side of the recovery drum according to the rotation of the recovery drum, the oil separating liquid is introduced into a space between the tooth units adjacent to each other by means of a capillary action to separate the oil from the tooth unit.

A filter device is disclosed. The filter device includes a coalesce and a final separator arranged one after another in a flow direction. The final separator includes final separator material and is arranged radially within the coalesce. The coalesce is configured hollow-cylindrical and includes a coalescer material and an external support structure with an upper coalescer ring and a lower coalescer ring that are connected with one another via axial coalescer ribs. A positioning element is provided on the final separator. A positioning opening is provided in a region of the at least one lower coalescer ring. The positioning opening is configured in a complementary manner to the positioning element and the final separator engages into the positioning opening in a mounted state with the positioning element and thereby aligns the final separator relative to the coalesce.

The present disclosure is directed to providing an oil-water separation filter structure including a base guide having a separated water outlet hole through which a fluid separated from a mixed fluid including an impurity exits, an oil-water separation filter disposed on the base guide to separate the impurity and the fluid included in the mixed liquid, and a top guide disposed on the oil-water separation filter, having at least one mixed fluid inlet hole through which the mixed fluid enters, and coupled to the base guide. According to the present disclosure, the oil-water separation filter structure includes a hydrophilic material to separate water and oil, and as opposed to the existing nonwoven fabric type filters, can be continuously used, thereby preventing environmental pollution problems.

A filter device may include a filter housing and a filter element defining a longitudinal axis disposed in the filter housing. The filter element may be configured to be penetrated by a fluid flow in a radial direction from a raw end to a pure end of the filter element. A water separator may be disposed at the pure end of the filter element and arranged axially spaced from the same. The water separator may have a hydrophobic and annular diaphragm extending in an axial direction of the filter element configured to be penetrated by the fluid flow from a raw end of the water separator in a radially outward to a radially inward direction with respect to the longitudinal axis to separate water from the fluid flow.

A diffuser baffle for use in an in-line wastewater grease interceptor. The diffuser baffle lies within a grease collecting chamber between the inflow and outflow of a grease interceptor. The diffuser baffle has an open bottom which is sized and shaped respectively to fit into the grease collecting chamber. The diffuser baffle has an end operatively connected to the inflow opening to permit wastewater to flow into the body through the open bottom. The baffle has a downstream end which includes a deflector portion to deflect a wastewater stream in a direction generally into the grease collecting chamber. The body also includes a number of apertures to permit the deflected wastewater stream to pass through the baffle and into the grease collecting chamber, where FOG will separate before waste water exits the chamber through the outlet baffle.

Compositions for water treatment are provided. In some embodiments, the composition comprises: a cationic polyacrylamide-type polymer having a charge density of about 10% to about 40% and a molecular weight of about 600×10.sup.4 g/gmol to about 900×10.sup.4 g/gmol; and a cationic surfactant, the surfactant comprising an alkyl quaternary ammonium salt. Also provided are related methods and kits for treating wastewater with dispersed and dissolved organic matters and oils. Embodiments of the compositions, methods, and kits can be used to treat oil-in-water emulsions, produced water, and process water containing dispersed and/or dissolved organic matter such as hydrocarbons from various process industries including Steam Assisted Gravity Drainage (SAGD) oil operations.

The present invention is a single oilfield treatment vessel for removing water, solids and gas from crude oil. The vessel functions to replace three separate normally used vessels: a gas separator, a free water knockout vessel and a heater treater. The present vessel functions more efficiently than the three vessels it replaces by virtue of its superior internals and efficiency based design. It pays for itself more quickly by increasing the quality and value of the effluent fluids and by reducing installation and operating costs.

A system an oil-water separation system including a vessel for receiving an oil-water mixture and passing a treated water having a lower concentration of oil than the oil-water mixture. The system further includes a first overflow baffle for directing the oil-water mixture fluid flow over the first overflow baffle, and a first underflow baffle positioned downstream along a fluid flow pathway of the first overflow baffle for directing the oil-water mixture fluid flow under the first underflow baffle, and a second overflow baffle positioned downstream along the fluid flow pathway of the first underflow baffle having a mesh with a plurality of perforations which directs fluid flow over the second overflow baffle and through the plurality of perforations. The second overflow baffle permits a water portion of the oil-water mixture to traverse through the mesh and an oil portion of the oil-water mixture to traverse over the mesh.

A liquid filter for water separation and/or particle filtration of a fuel and/or aqueous solution, in particular a urea solution, and/or water, in particular in a motor vehicle, is described. The liquid filter has at least one filter and/or coalescer medium that is made of a non-woven fabric that has fibers and/or threads having elementary silver.

A filter device for separating a liquid mixture, including a vessel with first filter element. The vessel comprises a flat vessel base surface and vessel mantle surface. , including a housing with a second filter element. The housing comprises flat housing base surface and housing mantle surface. The vessel mantle surface comprises re-entrant section forming recess. A mating side of the housing mantle surface is configured to fit into the recess, whereby the re-entrant section and the mating side are provided with connection means to fluidly connect the first filter element with the second filter element. The re-entrant section extends from the vessel base surface, and the vessel base surface and the housing base surface are parallel and level in the same plane when the mating side of the housing mantle surface is fitted into the recess formed by the re-entrant section.