FR2523618A3 - Septic tank with integral purifier - has partition separating tank and purifier with filters in duct - Google Patents

Abstract

The closed septic tank (1) has one or more inspection ports (2) and a waste water entry conduit (3). The purifier (4) is separated from the tank by a common wall (5) that extends upwards from the base to the top water level in the tank. A filter pipe (6) connects tank and purifier while a filter pipe (8) in the purifier base evacuates treated water. The top filter pipe is U shaped, the wings (6') of which have filters, extending into the purifier top, and supported on a traverse (7). The filter pipe collects water to be treated via a vertical pipe and an opening.

Description

 The present invention relates to the field of wastewater treatment devices, in particular domestic water, and relates to a septic tank with integrated purifier or de-polisher.

 Currently, wastewater treatment devices, in particular for domestic use, generally consist of a septic tank and a purifier or a decolloidator in the form of two separate containers connected to each other, at their upper part, by one or more filter hoses.

 These septic tanks and purifiers or separators are made of concrete, or more generally currently of synthetic material by extrusion blow molding, and are buried in excavations in a manner known per se.

 However, the installation of these pits and purifiers or decolloiders requires significant and costly excavations because of the volumes of earth to be moved, as well as connection works between pit and purifier or decolloidator thus lengthening the works and creating a risk additional deterioration of an item.

 The present invention aims to overcome these drawbacks.

 It has, in fact, for its object a septic tank constituted by a closed receptacle provided with one or more manholes and a waste water supply duct, characterized in that a purifier is integrated in the receptacle of the pit and separated from the latter by a common wall extending from the bottom of the receptacle to above the upper level of the water in the pit, a filtering pipe connecting the upper parts of the pit and the purifier, and a filtering hose for the discharge of purified water being provided in the lower part of the purifier.

 The invention will be better understood thanks to the following description, which relates to an embodiment of the invention, given by way of nonlimiting example, and explained with reference to the appended schematic drawing, the figure of which unique is a side elevation view in section of a pit. septic tank according to 1 invention.

 The septic tank J shown in the drawing aiiflQl e, it is constituted by a receptacle made of synthetic material and produced by blowing-extension, is provided with two manholes 2 and a conduit 3 for supplying waste water , and is provided, according to the invention, with a purifier 4 integrated in the receptacle of 1 pit 1.

 The interior volume of the purifier 4 is separated from the volume of the pit L by means of a common wall 5 extending from the bottom of the receptacle to above the upper level of the water in the pit.

The connection between the pit 1 and the purifier 4 is carried out by means of a filter pipe 6 advantageously having a U shape, the wings 6 'of which are filtering and extending inside the purifier 4, in the part upper part of the latter, supported by a cross member 1, and the core of which opens into the pit 1 from which it collects the water to be treated by means of a vertical pipe 6 "and an opening 6""
The evacuation of the purified water is carried out in the lower part of the purifier 4 by means of a filtering pipe 8 which can be connected, for example, to a lost well, or the like.

 It is also possible, in accordance with an alternative embodiment of the invention, to integrate into the receptacle of the pit 1, a decolloidor, the evacuation pipe 8 then being replaced by a full pipe c;, shown in thin broken lines , opening into the upper part of said decolloidor slightly below the level of the filter pipe 6.

 In this case, the connection between the pit 1 and the decolloidator is produced by a simple pipe element.

 thanks to the invention it is possible to produce a water sanitation unit with a compact structure, requiring a minimum of technical connections, allowing a saving of material, and requiring less extensive excavations, and therefore less expensive, with equal capacity. .

 Of course, the invention is not limited to the embodiment described and shown in the accompanying drawing.

Modifications remain possible, in particular from the point of view of the constitution of the various elements, or by substitution of technical equivalents, without thereby departing from the scope of protection of the invention.

Claims (3)

- CLAIMS -  1. Septic tank (1) consisting of a closed receptacle provided with one or more manholes (2) and a conduit (3) for supplying waste water, characterized in that a purifier (4 ) is integrated into the receptacle of the pit (1) and separated from the latter by a common wall (5) extending from the bottom of the receptacle to above the upper level of the water in the pit (1), a filter pipe (6) connecting the upper parts of the tank (1) and the purifier (4), and a filter pipe (8) for discharging the purified water being provided in the lower part of the purifier (4).  2. Septic tank, according to claim 1, characterized in that the connection between the tank (1) and the purifier (4) is carried out by means of a filter pipe (6) advantageously having a U shape, the wings of which ( 6 ') are filtering and extending inside the purifier (4), in the upper part of the latter, bearing on a crosspiece (7), and the core of which opens into the pit (1 ), from where it collects the water to be treated by means of a vertical pipe (6 ") and an opening (6" ').  3. Septic tank, according to claim 1, characterized in that a decolloidor is integrated in the receptacle of the tank (1) in place of the purifier, a simple pipe connecting the parts of the tank (1) and the decolloideur, and a full pipe (9) for evacuating the purified water opening into the upper part of said decolloideur slightly below the level of the connecting pipe.