ES1065304U - Separator device for wastewater hydrocarbons (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Sewage hydrocarbon separating device, of the type comprising a container body (1) of hydrocarbons (2) and waste water (3) in two layers separated by the density difference, said container body ( 1) on a side or upper part an elbow conduit (4) for entering the mixture of wastewater (3) and hydrocarbons (2) on a sand trap (6), which has adjacent a coalescence grid (7) that gives way to a space in which there is a pair of vertical tubes (81, 82) communicated inferiorly, the first tube (81) presenting a series of lateral holes (83) along its entire length and inside it a buoy (9) of sealing of its section, and of flotation at the interface between the waste water (3) and the hydrocarbons (2), while the second tube (82) has on its upper part a lateral drain (84) for the discharge of wastewater (3) free of hydrocarbons (2), and presenting the container body (1) laterally at least one overflow hole (12) for evacuation of floating hydrocarbons (2) characterized in that it comprises a flow limiting element (5) following the elbow pipe (4), with a calibrated outlet (51) of fluid passage to the sand trap (6) and a bypass of the excess flow discharged to the outside. (Machine-translation by Google Translate, not legally binding)

Description

Water hydrocarbon separator device residual

Object of the invention

The present invention relates to a sewage hydrocarbon separator device, which allows the elimination of wastewater without hydrocarbons, discharges into sewerage for example, and allocate hydrocarbons to your treatment.

Background of the invention

The problem of the discharge of hydrocarbons in different facilities, such as gas stations service or mechanical workshops. In these facilities it is common that hydrocarbon spills occur, which are carried by stormwater or cleaning water to the sumps and the water network sewerage.

The wastewater thus collected has a high content of hydrocarbons that cannot be poured into sewerage.

The utility model U200000399 of the same applicant, in which a device is described separation of hydrocarbons from wastewater, allowing for a side pour the sewage into the sewer, free of hydrocarbons, and on the other the shipment of the separated hydrocarbons to a deposit or similar for proper treatment.

This device consists of a body container, preferably buried, comprising on one side a layered inlet duct of the water mixture e hydrocarbons, allowing them to be extracted later wastewater on the one hand and hydrocarbons on the other at having the mixture decanted forming two different layers due to Its different density. The angled duct discharges onto a settler or desalter in which the sand is retained, small stones and other heavy substances that can drag the residual water. In turn, adjacent to this sand trap is a forced-pass coalescence filter that causes the small drops of hydrocarbons dragged by the flow of water are group together forming larger drops, with greater buoyancy, which allows them to ascend to the top layer of hydrocarbons in floatation. Next to the coalescence grid is a pair of vertical tubes communicated inferiorly. The first tube has a series of side holes in its entire length and inside is a sealing buoy of its section. This buoy floats at the height of the interface between the water and the hydrocarbons, ensuring that the liquid entering the holes existing below is only water, separated from hydrocarbons, that are blocked above the buoy. The second tube It has a side drain in its upper part discharge of wastewater, free of hydrocarbons. The body container has at least one evacuation overflow hole of the floating hydrocarbons in the upper layer. The hole overflow of hydrocarbon evacuation is located disposed above the discharge side drain mouth of sewage water.

The device's container body can present at the top one or more general access covers and inspection, as well as some mouths of breathing of the two tubes of wastewater evacuation.

These devices present problems when produce very abundant flows of water inflow, as is the case of significant rains on the surface that feeds the sump or inlet sinks. In this case, with the first drops of water drag hydrocarbons and all the dirt that It exists on the free surface. As the rain rages on incoming water is more abundant but without appreciable content of hydrocarbons, the incoming flow may be excessive in relationship with the flow that the device can treat separation.

Description of the invention

The hydrocarbon separating device of wastewater, object of this invention, presents some technical peculiarities intended to achieve operation more reliable in case of abundant inflows of water, as is the case with continuous and significant rains.

It has been observed that when a rain, the first drops of water that fall, are the ones that drag oil spills and existing dirt, mixed with the sand. As the rain rages and is more considerable the flow collected by the sump, as the pluvial surface from which sewage comes, water Inlet no longer contains hydrocarbons, at least to the extent appreciable.

The separating device of the invention, being of the type described above, it comprises an element flow restrictor following the inlet duct. This limiting element has a calibrated step output of a certain flow to the sand trap and in turn a bypass of the liquid leftover, connected to an external discharge duct, by example to the sewer. So when the flow of water collected and that supplies the angled duct is less than a maximum default falls to the sand trap through the calibrated outlet, This is its normal operation.

As mentioned when the flood or flow growth because the rain has long been important the flow limiting element is filled progressively, thus preventing the admitted flow rate from being exceeded by said flow limiter, to the point that the bypass of excess liquid that is led directly to the Exterior.

This excessive flow is normally water without hydrocarbons, as mentioned, because the surface of the one that comes is already cleaned by the previous flow. So the excess of wastewater without hydrocarbons is poured directly into sewer through the direct bypass conduit to the outside, without going through the inner circuit of the separator device.

This operation prevents overflow of the device as happens conventionally when it is exceeded promptly the maximum flow you can deal with.

The flow limiting element is configured as a vessel, arranged below the angled duct, presenting the calibrated output configured by at least one bottom outlet outlet of the wastewater flow and the branch constituted by a superior connection with the conduit of direct discharge to the sewer.

The outlet of the said discharge duct is It is arranged at a higher height than that of the holes oil spill overflows. This way you avoid that the liquids contained in the body recede towards the limiting element for having exceeded a level too high and that the hydrocarbons leave through said duct.

Description of the figures

To complement the description that is being performing and in order to facilitate the understanding of characteristics of the invention, is attached herein descriptive a set of drawings in which, for illustrative purposes and not limiting, the following has been represented:

- Figure 1 shows an elevation view sectioned

- Figure 2 shows a plan view of the open device

- Figure 3 shows a detail of the buoy or float inside the waste water outlet pipe.

Preferred Embodiment of the Invention

As can be seen in the figures referenced the water hydrocarbon separator device waste comprises a container body (1) of hydrocarbons (2) and wastewater (3) in two layers not mixed, presenting said container body (1) on one side an angled duct (4) of input of the mixture of wastewater (3) and hydrocarbons (2) coming from a pouring surface.

This angled duct (4) is embedded in a flow limiting element (5) provided with an outlet calibrated (51) to a lower sand trap (6), configured by some holes. The flow limiting element (5) it has a glass shape, being in its upper part a connection (52) or bypass overflow, connected with a conduit (53) direct discharge to the sewer of water exceeded by excessive wastewater collection (3) of rainfall occurs continued abundant.

The container body (1) comprises next to the desarenador (6) a forced coalescence grid (7) by an adjacent wall (11), so that the flow conventional wastewater (3) mixed with hydrocarbons (2) are separated by flotation of the drops of said hydrocarbons (2) in an upper layer, leaving the waters residuals (3) without hydrocarbons (2) in a lower layer by density. The container body (1) has on one side some overflow holes (12) of hydrocarbons (2) for evacuation of the top layer, these overflow holes being (12) at a lower height than the duct outlet (53) of spilled abroad.

Following the coalescence grid (7) two vertical tubes (81, 82) are connected inferiorly, the first tube (81) presenting a series of side holes (83) along its entire length and inside a shutter buoy (9) of its section, which floats at the height of the interface between the wastewater layer (3) and the hydrocarbons (2). In turn, the second tube (82) presents next to its upper end a side drainage mouth (84) of the waters residuals captured by the first tube (81) through the side holes (83) below the buoy (9).

Once nature is sufficiently described of the invention, as well as a preferred embodiment, for the appropriate purposes that the materials, form, size and arrangement of the elements described may be modified, as long as this does not imply an alteration of the essential features of the invention claimed in continuation.

Claims (3)

1. Separator device for wastewater hydrocarbons, of the type comprising a container body (1) of hydrocarbons (2) and wastewater (3) in two layers separated by the difference in density, said container body ( 1) on a side or upper part an angled conduit (4) for the inlet of the mixture of wastewater (3) and hydrocarbons (2) on a sand trap (6), which adjacently presents a coalescence grid (7) that gives way to a space in which there is a pair of vertical tubes (81, 82) communicated inferiorly, the first tube (81) presenting a series of lateral holes (83) along its entire length and inside a buoy (9) of sealing of its section, and flotation at the interface between the wastewater (3) and the hydrocarbons (2), while the second tube (82) has in its upper part a lateral drain mouth (84) wastewater (3) free of hydrocarbons (2), and presenting the cu erpo container (1) laterally at least one overflow hole (12) for evacuation of the floating hydrocarbons (2) characterized in that it comprises a flow limiting element (5) following the angled duct (4), with a calibrated outlet (51) of passage of fluid to the desarenador (6) and a derivation of the excess flow poured to the outside. Device according to claim 1, characterized in that the flow limiting element (5) is configured as a vessel, arranged below the angled duct (4), the calibrated outlet (51) being formed by at least one lower hole outflow of wastewater (3) and hydrocarbons (2) and the bypass constituted by an upper connection (52) with a conduit (53) for direct discharge of water to the sewer. 3. Device according to claim 2, characterized in that the outlet of the discharge duct (53) is arranged at a higher height than that of the overflow orifices (12) of the discharge of hydrocarbons.