DE202014102520U1 - Equipment for the production of a water treatment plant - Google Patents

Abstract

Equipment intended for the construction of a wastewater treatment plant suitable for the construction of a wastewater treatment plant within a residential area, the equipment comprising at least three tanks, each provided with a manhole (2) in its upper part for access to the tank , these comprising at least three tanks: - one or more primary clarification tanks (3, 3 '), each comprising an inlet (30, 30') and an outlet (31, 31 '), - one or more tanks (4) for biological treatment, comprising at least one aerator (42) intended to be submerged and to aerate the biological sludge and the outflows, and - a secondary septic tank (5) comprising an inlet (50) and an outlet (51), the at least three trays (3, 3 ', 4, 5) being intended to be connected and the inlets and outlets of the trays being intended to be connected to one another by means of channels (80, 81, 82) of the equipment to be connected so that the outflows flow one after the other through the primary septic tank, the tank (s) for biological treatment and the secondary septic tank, and wherein each of the at least three tanks (3, 3 ', 4, 5) is made of one piece and has such dimensions comprises that the tub can be conveyed through standard doors, or alternatively each of the at least three tubs consists of two separate parts, in particular two half-shells, which can be transported independently and are intended to be tightly connected to the tight shell of the tub to form, each of the two tub parts having such dimensions that the tub part can be conveyed through standard doors.

Description

The invention relates to a kit comprising at least three trays intended to be assembled to form a waste water treatment plant, in particular for domestic use.

The field of the invention is that of non-collective processing. In this field treatment plants are known, which are used to clean the waste water from the household with a view to the introduction into the hydraulic medium at the surface or the infiltration of the waste water into the ground.

Conventionally, a waste water treatment plant cleans the waste water from the household, consisting of waste water (toilets, urinals) and waste water (sinks, showers, bathtubs, dishwashers, washing machines, etc.), and works with a purification process (biological filtration, activated sludge, SBR). Sequencing batch reactor, solid cultures, fluid bed, bioreactor with membrane, etc.).

Thus, in the field of non-collective treatment, plants are known which comprise a first primary clarification tank. This primary clarification makes it possible to separate the clarifiable suspended solids, floating suspended solids, oils and other emulsions and the fats of the effluents before the latter drain to a biological treatment tank. This step represents the pretreatment.

The biological treatment tub may include an aerator to provide oxygenation to the biological muds or bacteria present in the tub for their respiration and development to facilitate degradation of the organic contaminants and possibly nitrogen pollution by these bacteria.

The thus treated effluents and biological sludge eventually drain to a secondary clarifier where these sludges are separated from the water before the treated and clarified water is discharged into a natural medium.

This type of waste water treatment plant is used for the treatment of household waste water in living areas which are not able to connect to a public waste collection network (collective treatment), in which case the plant is traditionally submerged in the unused property, with his Access panels that are flush with the floor.

For example, from the document FR 2 966 143 a compact, cylindrical wastewater treatment plant with coaxial compartments, which is intended for the treatment of household wastewater, the compartments comprise a precleaner, a biological reactor and a post-treatment plant. Such a sewage treatment plant is made of a material such as steel and intended to be sunk.

However, such equipment has disadvantages. It is not easy to move and install such a system.

Due to their weight, it is necessary to use conveyors to set up such a plant.

Due to their space requirements, it is necessary to have sufficient access for the implementation of such a system.

Moreover, in the case where the living area has no land, it is not possible to install such a facility.

The object of the present invention is to obviate the aforementioned drawbacks by proposing equipment which allows simple and rapid deployment of the manpower equipment.

In particular, the object of the present invention is to propose equipment with a limited space requirement and special features, which can be set up within a residential area that does not have sufficient access for conventional equipment or for a property.

Another object of the present invention is to propose equipment that is inexpensive and easy to use.

• – eine oder mehrere Primärklärwannen, die jeweils einen Eingang und einen Ausgang umfassen,
• – eine oder mehrere Wannen zur biologischen Behandlung, umfassend mindestens einen Belüfter, der dazu bestimmt ist, versenkt zu werden und die biologischen Schlämme und die Ausflüsse zu belüften, und
• – eine Sekundärklärwanne, umfassend einen Eingang und einen Ausgang.

These objects, as well as others which will be clearly apparent hereinafter, are achieved according to the invention by means of equipment intended for the production of a waste water treatment plant suitable for the production of a waste water treatment plant within a residential area, the equipment comprising at least three baths, each of which is provided with a manhole in its upper part for access to the trough, comprising at least three troughs:

• One or more primary clarifying tanks, each comprising an inlet and an outlet,
• - one or more biological treatment tanks comprising at least one aerator, which is intended to be sunk and to aerate the biological sludge and the effluents, and
• A secondary clarifier comprising an entrance and an exit.

According to the invention, the at least three trays are intended to be connected preferably along their width and the inlets and outlets of the trays are intended to be connected to each other by means of ducts of the equipment so that the effluents pass through the primary clarifying tray, the tray (n) for biological treatment and the secondary sedimentation tank flow.

The troughs are preferably made of plastic synthesis materials such as rotationally molded or blown polyethylene, polypropylene, polycarbonate, glass fiber reinforced resin, etc.

Preferably, the at least three trays are parallelepiped, each tray preferably having a greater height than length and width.

According to the invention, each of the at least three trays is in one piece and has dimensions such that the tray can be conveyed through standard doors. Alternatively, the shell of each of the at least three troughs consists of two separate parts, in particular two half-shells, which can be conveyed independently and are intended to be tightly connected to form the sealed shell of the trough, each of the two trough parts having such dimensions in that the trough part can be transported through standard doors. For example, the dimensions of the standard doors of an apartment are 204 cm high and 93 cm wide. According to one embodiment, the at least three trays or trough parts can each be conveyed through doors with dimensions of 204 cm height and 83 cm width or even 204 cm height and 73 cm width.

In one embodiment, the height of each of the troughs or troughs is between 140 cm and 200 cm, and preferably between 160 cm and 180 cm, the length of each of the troughs or trough parts being between 100 cm and 150 cm, and the width of each of the troughs or troughs Pan parts between 60 cm and 90 cm.

Preferably, each of the at least three troughs or troughs to carry man-power troughs or troughs has a weight of less than 90 kg, and preferably less than 70 kg, such as about 65 kg.

For this purpose, the thickness of the walls of the troughs may on average be less than 10 mm: these troughs are now subject to deformation of their side walls under the pressure of the water contained in the trough.

In order to limit this deformation, each of the at least three troughs may comprise circumferential grooves which in particular are distributed regularly on the whole or part of the height of each of the troughs in order to stiffen their structure.

According to one embodiment, the equipment may comprise retaining means intended to prevent or at least limit the deformation of the side walls of the at least three troughs, thereby enclosing the troughs.

According to a first alternative, the holding means may comprise a plurality of pairs of bars, each connected to a pair of tie rods, each pair of bars and each pair of tie rods being intended to enclose the trays individually, the bars being intended to be in the groove of one of the trays Run trays along the length of the tub, wherein the tie rods, the distance between the two beams, which are intended to run in the same groove along the width of the tub hold.

According to a further alternative, the retaining means may comprise a plurality of beam pairs, each connected to a cable pair, each beam pair and corresponding pair of cables being intended to enclose the entirety of the at least three trays, the beams of a same pair being intended to to run in the grooves of the two outermost troughs of the unit along the length of the troughs, the cables being designed to run along the width of the troughs in the grooves of the respective troughs, the cables keeping the distance between the beams.

According to one embodiment, the outlet of the primary clarifier or at least one of the two primary clarifiers comprises a device, such as an overflow, which defines the level of effluents into the primary clarifier, with the input of the primary clarifier or at least one of the primary clarifiers being immersed; wherein it opens at least at a lower level than that defined by the device, and preferably at a lower level than the level at which the exit immersed in the primary clarifying trough discharges.

In one embodiment, the mouths of the inlet and outlet of the or each biological treatment tank are at the level arranged from two opposite corners of the tub for biological treatment along the diagonal of the tub.

In one embodiment, the exit of the primary clarifier tank, which is intended to be adjacent to the biological treatment tub, comprises prefilter means, such as a filter brush.

In one embodiment, the biological treatment tub includes a support lining for the bacteria.

In one embodiment, the liner is of the fluidized bed type and includes a plurality of members intended to be recirculated by the at least one aerator.

In one embodiment, the at least one aerator comprises a single aerator centered on the central axes of the biological treatment tub and disposed in the direction of the length of the biological treatment tub.

According to one embodiment, the output of the secondary clarifying trough comprises a device, such as an overflow, which defines the level of water in the trough, the inlet of the secondary clarifying trough comprising two channels symmetrical with respect to the central transverse plane of the trough, which are adapted to supply the incoming flow which extend in the vicinity of one of the side walls of the tub and open at a lower level than that of the output mouth of the secondary clarifying trough, the two channels respectively opening in the vicinity of the two walls, which are located at the longitudinal ends of the tub Output is arranged on the side wall opposite the tub in the region of a central zone of the side wall.

In one embodiment, the secondary clarifier comprises an extraction pump for the slurry and a sloped bottom intended to collect the slurry toward the pump.

According to one embodiment, the inclined floor comprises at least one removable element made of a flexible material, wherein the or each element comprises two inclined side wings and a central part, wherein the or each of the elements is intended to be inserted through the manhole of the secondary settling tank, respectively it deforms elastically, the or each of the elements resuming its shape and automatically locking when placed at the bottom of the tub.

In one embodiment, the central portion of the or each of the elements at the tub bottom is intended to receive at least one extraction pump for the slurry, the at least one extraction pump for the slurry enabling the inclined soil to be held in place.

The invention also relates to a waste water treatment plant resulting from the assembly of the equipment according to the invention, wherein the at least three pans are preferably connected to their side walls along the width of the pans, the waste water treatment plant comprising an inlet for the effluents and an outlet for the clarified water.

According to a preferred embodiment, the retaining means enclose the troughs.

Further features and advantages of the invention will become more apparent from a study of the following description of a particular embodiment of the invention, given as a simple illustrative and nonlimiting example, and the accompanying drawings, in which:

1 is a plan view of the equipment according to the invention in transparency;

2 a sectional view of the inventive equipment according to AA, as in 1 is shown;

3 a sectional view of the equipment according to the invention according to BB, as in 1 is shown;

4 a sectional view of the secondary clarifier according to CC, as in 1 is shown;

5 a sectional view of the trough for biological treatment of the equipment according to DD, as in 1 is shown;

6 Fig. 12 is a schematic plan view illustrating an embodiment of the holding means comprising beams and tie rods;

7 Fig. 12 is a schematic plan view illustrating a second embodiment of the holding means comprising beams and tie rods;

8th Figure 3 is a schematic view of a device other than a simple overflow used to define the level of liquids in the tub between lower and upper levels.

As mentioned previously, the general principle of the invention is thus based on the use of a equipment 1 , intended for the production of a waste water treatment plant, comprising at least three, preferably parallelepiped, wells, each well preferably having a height greater than the length and the width.

• – eine oder mehrere Primärklärwannen 3, 3', wobei jede einen Eingang 30, 30' und einen Ausgang 31, 31' umfasst, die vorzugsweise derart angeordnet sind, dass die Ausflüsse vorzugsweise in Richtung der Länge der Wanne 3, 3' zirkulieren,
• – eine oder mehrere Wannen 4 zur biologischen Behandlung, umfassend mindestens einen Belüfter 42, der dazu bestimmt ist, eingetaucht zu werden und die biologischen Schlämme und die Ausflüsse zu belüften, und
• – eine Sekundärklärwanne 5, umfassend einen Eingang 50 und einen Ausgang 51.

Each of the tubs preferably has a manhole 2 on its upper part for access to the tub, the at least three tubs comprising:

• - one or more primary sewage tanks 3 . 3 ' each with an entrance 30 . 30 ' and an exit 31 . 31 ' includes, which are preferably arranged such that the outflow preferably in the direction of the length of the tub 3 . 3 ' circulate,
• - one or more tubs 4 for biological treatment, comprising at least one aerator 42 which is intended to be submerged and to aerate the biological sludges and effluents, and
• - a secondary clarifier 5 comprising an entrance 50 and an exit 51 ,

According to the invention, the at least three trays 3 . 3 ' . 4 . 5 destined to be connected preferably to its side walls as in 1 shown. The inputs and outputs of the tubs are designed to communicate with each other by means of channels 80 . 81 . 82 be connected so that the effluents sequentially through the or the two primary clarification tanks 3 . 3 ' , the tub (s) 4 for biological treatment and the secondary sedimentation tank 5 flow.

• – die Länge der Abwasserbehandlungsstation, entspricht, wenn sie hergestellt ist, nun im Wesentlichen der Summe der Breiten der Wannen 3, 3', 4, 5;
• – die Breite der Abwasserbehandlungsstation entspricht nun im Wesentlichen der Länge der Wannen 3, 3', 4, 5.

Preferably, the at least three trays are connected in the direction of the width of the trays:

• - The length of the wastewater treatment station, when manufactured, now substantially equal to the sum of the widths of the tubs 3 . 3 ' . 4 . 5 ;
• - The width of the wastewater treatment station now essentially corresponds to the length of the tubs 3 . 3 ' . 4 . 5 ,

The waste water treatment station thus produced is compact.

Preferably, according to the invention, each of the trays is in one piece and has dimensions such that each of the trays can be carried by standard doors. For example, the dimensions of the standard doors are 204 cm high and 93 cm wide. According to one embodiment, each of the tubs 3 . 3 ' . 4 . 5 through doors 204 cm high and 83 cm wide or 204 cm high and 73 cm wide.

Alternatively, according to the invention, the tight envelope of each of the at least three trays consists of two separate parts which are independently operable / conveyable, in particular of two half-shells. These two trough parts are designed to be tightly connected to form the trough, wherein each of the trough parts has dimensions such that the trough part can be conveyed through standard doors. According to this latter embodiment, each pan part is intended to be carried by doors of the living area and to the room in which the waste water treatment plant is to be assembled.

The shell of each tub is now restored by the tight connection of the two tub parts. For example, the peripheral walls of the two parts can be glued, welded or bandaged by gluing glass fiber tapes with polyester resin.

For example, in the case where the tubs are in one piece, the height of each of the tubs is between 140 cm and 200 cm, and preferably between 160 cm and 180 cm (eg 170 cm), with the length of each of the tubs between 100 cm and 150 cm (eg 125 cm), and wherein the width of each of the troughs is between 60 cm and 90 cm (for example 72 cm). Preferably, these dimensions allow to pass through the standard sized doors of the living areas. If each of the tubs consists of two parts that are transported independently, each of the tub parts can meet the same dimensioning requirements.

The capacity of each of the tubs can be between 1.0 m ³ and 1.7 m ³ , so that for example for the tubs 3 . 3 ' a capacity of 1.15 m ³ and for the tubs 4 . 5 ' a capacity of 1.10 m ^{3 is} present.

A limited height also makes it possible to facilitate the maintenance of the tubs, leaving the manhole 2 can be easily opened without going through the ceiling height of the room where the equipment is 1 is installed, to be disturbed.

The tubs 3 . 3 . 4 and 5 can be made of a plastic, such as polyethylene (PE), to facilitate their easy conveyance, with a relatively low weight of preferably less than 90 kg, and advantageously less than 70 kg, for example about 65 kg. Such tubs are thus easily displaced by two men. These trays can be made by rotational molding.

If each of the tubs consists of two parts that are transported independently, each of the tub parts can meet the same weight requirements.

If the tub body is made of two parts, the tubs may preferably be made of resin, and the two tub parts may be tightly connected by attaching a resin band.

The trays are preferably made of a plastic synthesis material such as rotationally molded or blown polyethylene, polypropylene, polycarbonate, glass fiber reinforced resin, etc.

The wall of the tubs thus preferably has a thickness of less than 10 mm, such as 7 mm, to limit the weight of the tub and thus facilitate its support.

According to a particular aspect of the invention, each of the tubs comprises 3 . 3 ' . 4 and 5 circumferential grooves 8th that in the 1 and 3 which are regularly spaced on the entirety or part of the height of each of the troughs to stiffen the structure of the troughs.

The equipment can also be holding means 6 or 7 include, which are intended to prevent the deformation of the side walls of the at least three troughs to the outside or greatly restricted, wherein the troughs are enclosed. Preferably, these means enclose the tubs in their entirety (see 7 ) or individually (see 6 ) in the region of the circumferential grooves 8th the tubs preferably on several levels of the tubs.

After a first, in 6 illustrated embodiment, the holding means 6 a variety of beam pairs 61 . 62 include, each with a tie rod pair 63 . 64 are connected. Each bar pair and corresponding tie bar pair is intended to individually enclose the tubs. The bars 61 . 62 , such as U-profiles, are intended to run in the groove of one of the troughs on either side of the trough along the length of the trough, with the tie-rods 63 . 64 Keep the distance between the two beams, which are designed to run on the width of the tub on the other two sides of the tub. The adjustment of the distance between the two beams of a same pair can be achieved by screws, with the ends of the tie rods threaded to cooperate with locking nuts resting on the beam.

After another, in 7 illustrated alternative, the holding means 6 a variety of beam pairs 71 . 72 include that with a cable pair 73 . 74 are connected. Each bar pair 71 . 72 and corresponding cable pair 73 . 74 is intended to enclose the entirety of the at least three tubs. The beams of a same pair are intended to run in the grooves of the two outermost troughs of the unit along the length of the troughs. The tubs 73 . 74 are intended to run along the width of the troughs along the grooves of the respective troughs, the cables keeping the distance between the beams. The adjustment of the distance between the two beams of a same pair is determined by the tension of the cables, for example by means of tensioning elements 75 . 76 , receive.

According to a particular embodiment of the invention, the equipment comprises two trays 3 . 3 ' for primary clarification, arranged in series, by means of a horizontal channel 80 that the exit 31 the first tub 3 with the entrance 30 ' the second tub 3 ' connects to optimize the clarification. Preferably, it allows the first primary clarifying tank 3 to break the hydraulic flow entering the effluents and the second primary clarifier 3 ' to prevent the eddies that are caused by the incoming effluents, resulting in better retention of the sludge in the first primary clarifier 3 and the second primary clarifier 3 ' is favored.

As in the 2 and 3 can be seen, are the entrance and the exit of the primary sewage pans 3 and 3 ' formed by means of a channel of PVC, for example, which is sunk and immersed vertically in the tub, the entrance 30 the first primary clarifier is connected to a channel, which has the task to absorb the effluents from the living area.

The level of spills in the two tubs 3 and 3 ' is by at least one device S, S ', such as an overflow, and in particular according to the example at the level of the channels 80 . 81 Are defined.

The mouth of the entrance 30 the primary clarifier 3 and the exit 31 the primary clarifier are located near the sidewalls of the tub, as in 1 you can see. Such an arrangement has the advantage of providing an as long as possible clearing distance (along the length of the tub), and allows good retention of the sludge within this primary clarifier 3 ,

The mouth of the entrance 30 ' the second primary clarifier 3 ' is submerged and preferably at a lower level than the level of the exit orifice 31 ' the second primary clarifier 3 ' arranged to optimize the retention of the sludge. For example, there is the entrance mouth 30 ' the second tub 3 ' 50 cm below the level of the outflows, while the level of the exit orifice 31 ' only 20 cm below the level of the outflows. Such an arrangement forces the outflows of the entrance mouth 31 ' to the exit port 31 ' ascend, reducing the rate of unexplained particles passing through the exit 31 ' escape, is limited.

The entrance 30 ' and the exit 31 ' the second primary clarifier 3 ' are, as with the first tub, located near the side walls of the tub, to a Klärstrecke along the length of the tub 3 ' to offer (see 1 ).

According to a particular embodiment of the invention, the output comprises 31 ' the second primary clarifier adjacent to the biological treatment tub, prefilter means, such as a prefilter brush, intended to retain the floats.

Such pre-filter means have the advantage that they are easy to handle in a maintenance / cleaning process. If necessary, these pre-filtering means make it possible for the bath to be treated biologically 4 is of the fluid bed type, the fluid bed type lining is inside the tub 4 to retain for biological treatment.

The exit 31 the first primary clarifier 3 is with the entrance 30 ' the second primary clarifier 3 ' using a horizontal channel 80 made of PVC, for example, connected to the channel 80 through the longitudinal walls of the tubs 3 and 3 ' passes through an opening provided for this purpose and comprises sealing means arranged at the level of each opening of each trough.

The equipment also includes the at least one tub 4 for biological treatment. This tub 4 includes the at least one aerator 42 designed to be submerged in the lower part of the tub and to aerate the effluents and biological sludge that are in the tub.

According to an embodiment, not shown, the tub 4 for biological treatment, do not include an inner lining as a carrier of bacteria.

According to another particular embodiment of the invention, the tub comprises 4 for biological treatment a lining 9 as a development carrier for the bacteria that is schematically in 3 is shown for better visibility. The liner may be fixedly disposed in the tub (not shown) with a technical floor above the aerator (s) 42 is arranged to protect it from the lining, and retaining bars on the walls of the tub 4 arranged in the upper part to prevent the lining from rising.

In the case of a solid lining can be provided several aerators 42 under the lining to ensure homogeneous diffusion of air through the lining.

According to another embodiment, in 3 is shown, is the lining 9 of the fluidized bed type and comprises a plurality of elements intended for use by at least one aerator 42 to be turned around. The elements of the lining 9 are movable, with a density close to 1, in particular between 0.95 and 1, in order to be able to circulate in the entire volume of the tub when away from the bubbles of the aerator 42 be circulated. When the aerator is at rest, the moving elements of the lining accumulate 9 in part, for example, the upper half of the water volume of the tub 4 take for biological treatment.

A lining 9 The fluid bed type in particular has the advantage of facilitating the maintenance of the equipment, whereby the operations of removing the lining can be carried out by means of a suction line of a vehicle of the rinsing vehicle type. Such a fluid bed treatment also makes it possible to achieve a more homogeneous and stable biological treatment.

The fluidized bed lining also makes it possible to promote nitriding / denitration, which is important to ensure proper treatment of the effluents.

After the in 3 illustrated embodiment is the aerator 42 on the central axes of the tub 4 centered for biological treatment and towards the length of the tub 4 arranged for biological treatment, to a strong circulation of the lining 9 to create.

According to a particular embodiment of the invention, the level of the entrance 40 the tub 4 for biological treatment higher than the level of the output 41 the tub 4 for biological treatment, the exit mouth 41 destined to be sunk, and the entrance 40 for example, above the level of in the tub 4 for biological treatment existing outflows is positioned. The level of the spills in the tub 4 for biological treatment is defined by a device S ", such as an overflow, at the level of the conduit with the reference numeral 82 is arranged.

According to one embodiment of the invention, the entrance 40 and the exit 41 the tub 4 for biological treatment arranged so that they amount to two opposite corners of the tub 4 for biological treatment along the diagonal.

The two previous arrangements preferably make it possible to achieve biological treatment in the case of a fluidized bed lining, even if the aerator is inactive: the outflows are thus forced through the lining 9 , which is collected in the upper part of the water, along the diagonal of the tub 4 from the top to the bottom of the lining 9 to flow.

It is thus possible the aerator 42 alternating, for example, with a clock, whereby the biological treatment of the outflows is prolonged, even at times when the aerator is inactive.

The in 5 illustrated output 41 is formed by a channel, comprising in succession a first vertical part 410 that with the entrance of the secondary clarifier 5 with the help of the channel 82 connected, a curved part 411 and a sloping part 412 comprising slots on part of its length 413 regularly on the lower part of the inclined part 412 are distributed. The slots 413 are designed to prevent the lining of the fluidized bed type from entering the secondary settling tank 5 to get. In general, the mouth of the exit prevents 41 in that the lining is of the fluidized bed type in the secondary settling tank 5 arrives.

Equipment 1 also includes the secondary clarifier 5 , which is intended for clarification of the water, comprising an entrance 50 and an exit 51 , where the secondary Klärwane 5 with the tub 4 for biological treatment via the horizontal canal 82 connected is. Advantageously, the exit port is 51 at a higher level than the entrance mouth 50 arranged. The exit 51 is provided with a device S ''', such as an overflow, which is the level of water in the tub 5 Are defined.

According to a particular embodiment of the invention, the entrance comprises 50 the secondary sedimentation tank 5 two channels 501 and 502 , in particular to a transverse center plane of the tub 5 are symmetrical. The two channels 501 and 502 make it possible, in particular, to double the incoming stream, and lead to a lower level than that of the exit 51 the secondary sedimentation tank 5 , The channels 501 and 502 start in the upper part of the tub 5 in the middle at the level of the canal 82 , where are the two inclined channels 501 and 502 each to the side walls of the tub 5 extend.

The two channels 501 and 502 each open near the two side walls, which are at the longitudinal ends of the tub 5 are located, with the channels 501 and 502 each comprise a bent end to the flow of effluents to the bottom of the tub 5 to judge.

Doubling the incoming stream preferably allows the water at the entrance to the tub 5 to calm down, the rate of ascent of the water to the exit 51 to reduce, and so to optimize the clarification.

The secondary clarifier 5 includes an extraction pump 52 for the mud and a sloping ground 53 which is intended to transfer the sludge to the extraction pump 52 to collect for the mud.

According to one embodiment of the invention, the inclined floor 53 at least one element 530 . 531 (eg, two elements) of a flexible material, wherein the or each of the elements has two inclined side wings 532 and a middle part 533 comprising, wherein the or each of the elements 530 and 531 destined to go through the manhole 2 the secondary sedimentation tank 5 be used, wherein it deforms elastically, wherein the or each of the elements 530 and 531 resumes its shape and automatically detects itself when it is at the bottom of the secondary clarifier 5 is arranged.

As in 4 can be seen, includes the sloping floor 53 for one non-limiting example, two elements 530 and 531 made of a flexible material, each of the elements having two inclined side wings 532 and a middle part 533 includes, the two elements 530 and 531 destined to go through the manhole 2 the secondary sedimentation tank 5 to be used, wherein they deform elastically, the two elements 530 and 531 regain their shape and automatically detect themselves when they hit the bottom of the secondary clarifier 5 are arranged.

According to a particular embodiment of the invention, the side wings form 532 a minimum slope of 55 ° (for example, 57 ° after 4 ) with respect to the horizontal so that the sludges arriving at the sloping bottom are connected to the extraction pump 52 sink for the sludge.

The extraction pump 52 for the mud is installed when the sloping ground 53 is attached, so the pump 52 the sloping ground 53 thanks to its weight holds in place, especially sitting on the middle parts 533 the two elements 530 . 531 ,

The exit 51 is on the side surface of the tub, that of the entrance 50 Opposite, positioned at the level of a central zone of the sidewall to the hydraulic lines between the two input mouths 50 and the exit port 51 to maximize. As in 2 represented, the mouth of the output opposite the side wall of the tub, at which the exit 51 is positioned, be directed.

This equipment allows the installation of a waste water treatment plant inside a living area. For this purpose, each of the at least three trays of the equipment is independently conveyed to an interior of the living area, in particular through the doors of the living area.

The wastewater treatment plant comprises an entrance 30 for the spills and an exit 51 for the clarified water.

The troughs are arranged side by side, preferably along the width, so that they occupy as little space as possible, wherein the primary clarifying trough (s) are positioned so that they ensure the proper connection to the supply of household wastewater.

When installing the primary clarifier 3 close to the second primary clarifier 3 ' over a canal 80 connected, with the second primary clarifier 3 ' tight with the tub 4 for biological treatment via a canal 81 is connected, and the tub 4 for biological treatment tight with the secondary clarifier 5 over a canal 82 is connected.

When the hydraulic connection is made, the retaining means become 6 arranged around the troughs to limit the deformation of the side walls of the troughs to the outside under the weight of the liquids.

Preferably, the retaining means 6 or 7 destined in the area of the grooves 8th to be arranged, which are formed on the trays, wherein the trays are enclosed individually or in their entirety. The holding means 6 include, for example, bar pairs 61 . 62 like U-shaped iron, with tie-rod pairs 63 . 64 are connected, with the U-shaped iron in the grooves 8th slide.

According to a further embodiment of the invention, the holding means enclose 7 the at least three tubs in their entirety. According to this embodiment, the retaining means 7 a system of cables 73 . 74 and of beams 71 . 72 that has the least three tubs 3 . 4 and 5 surrounds, and a clamping element 75 . 76 for each cable, with the cables and beams in the area of the grooves 8th are arranged.

The wastewater treatment plant is then connected to the discharge channel of the treated wastewater of the living area.

Preferably, the resulting hydraulic section is optimized so as to guarantee good clarification and / or good biological treatment, despite the small dimensions of the trays. Such a track is in the 1 and 2 represented by arrows. This is how household wastewaters get into the first primary clarifier 3 through the entrance 30 one connected to the descending channels of raw sewage of the living area. This first tub 3 makes it possible to carry out a first separation of solid and liquid waste.

The outflows traverse the tub 3 in the longitudinal direction to the exit 31 and pour into the second primary clarifier 3 ' over the entrance 30 ' , A further separation of the solid / liquid wastes takes place in this tub 3 ' ,

The outflows traverse the tub 3 ' in the longitudinal direction to the exit 31 ' pass through the pre-filtering means located in the outlet and flow into the trough 4 for biological treatment through the entrance 40 , In this tub 4 the effluents flow through a liner (media carrier) which cyclically with the help of at least one aerator 42 standing in the bottom of the sink 4 is arranged, is supplied with oxygen, to favor the development of bacteria. The at least one aerator is supplied with air via a hose 43 supplied, extending over the entire height of the tub 4 extends and opens in its upper part by an opening provided for this purpose.

When the aerator is active, the spills are recirculated and coincide with the lining of the tub 4 for biological treatment in contact, get to the exit 41 and pour into the secondary clarifier 5 , preferably on the sloping ground 53 through the entrance 50 that of the channels 501 and 502 is formed.

When the aerator is inactive, the effluents flow through the recessed liner of the tub 4 for biological treatment along its diagonal from one corner to the other to the exit 41 and pour into the secondary clarifier 5 , preferably on the sloping ground 53 through the entrance 50 that of the channels 501 and 502 is formed.

In the secondary clarifier 5 The sewage sludge from the extraction pump 52 sucked in for the sludge and returned to the first or second primary clarifier via a hose 54 that with the pump 52 is connected and up the entire height of the tub 5 extends and opens in its upper part through an opening provided for this purpose, returned, wherein the hose 54 with a line 55 which extends on the whole or part of the length of the assembled tubs and opens in the upper part of the first or second primary clarifying trough.

Finally, the clarified water is over the outlet 51 from the secondary clarifier 5 derived.

It should be noted that all or part of the devices S, S ', S "or S"' represent the water level in the pans 3 . 3 ' . 4 or 5 define, simple overflows can be, as in the 1 to 5 shown. A simple overflow makes it possible to precisely define the height level of the liquids in the associated tub.

These devices S, S ', S ", S"' may also be formed by flow restricting means which are known to those skilled in the art. Such a means is given as a non-restrictive example in 8th shown.

Such a flow restriction means makes it possible to maintain the water level between a lower level (Niv.bas) and an upper level (Niv.haut) and, unlike a simple overflow, makes it possible to keep the water longer in the tanks, especially at Arrival of a large amount of sewage. This has the advantage of maximizing the residence time of the effluents in the tubs, thus improving treatment.

Of course, other embodiments may be devised by those skilled in the art without, of course, going beyond the scope of the invention as defined by the following claims.

LIST OF REFERENCE NUMBERS

1

equipment

2

manhole

3, 3 '

Primärklärwannen

30, 30 '

Inputs to primary clarification pans

31, 31 '

Exits primary sewage tanks

32

prefilter

4

Tub for biological treatment

40

Entrance tub for biological treatment

41

Exit pan for biological treatment

410, 411, 412

Exit elements pan for biological treatment

413

slots

42

aerator

43

Hose for oxygenation

5

Sekundärklärwanne

50

Input secondary clarifier

501, 502

Input channels secondary clarifier

51

Output secondary clarifier

52

pump

53

inclined ground

530, 531

flexible elements

532

wing

533

midsection

54

Hose for sludge drainage

55

Extraction line for the sludge

6

holding means

61, 62

pair of bars

63, 64

tie rods

7

holding means

71, 72

pair of bars

73, 74

cable pair

75, 76

clamping elements

8th

circumferential grooves

80, 81, 82

connecting channels

9

Lining (media carrier)

At the

central axis

S

Device, such as overflow (pan 3 )

S '

Device, such as overflow (pan 3 ' )

S ''

Device, such as overflow (pan 4 )

S '' '

Device, such as overflow (pan 5 )

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• FR 2966143 [0008]

Claims (24)

Equipment intended for the manufacture of a waste water treatment plant suitable for the production of a wastewater treatment plant within a residential area, the equipment comprising at least three wells, each with a manhole ( 2 ) are provided in their upper part for access to the trough, comprising at least three troughs: - one or more primary troughs ( 3 . 3 ' ), each with an input ( 30 . 30 ' ) and an output ( 31 . 31 ' ), - one or more trays ( 4 ) for biological treatment, comprising at least one aerator ( 42 ) intended to be sunk and to aerate biological sludge and effluents, and - a secondary sedimentation tank ( 5 ), comprising an entrance ( 50 ) and an output ( 51 ), whereby the at least three trays ( 3 . 3 ' . 4 . 5 ) are intended to be connected, and the entrances and exits of the troughs are intended to communicate with each other by means of channels ( 80 . 81 . 82 ) so that the effluents flow sequentially through the primary clarifying tank, the biological treatment tank (s) and the secondary clarifying tank, and each of the at least three wells ( 3 . 3 ' . 4 . 5 ) is of one piece and of such dimensions that the tub can be carried by standard doors, or alternatively each of the at least three tubs consists of two separate parts, in particular two half shells, which can be conveyed independently and which are intended to be tightly connected to form the sealed shell of the tub, each of the two tub parts having dimensions such that the tub part can be conveyed through standard doors. Equipment according to claim 1, wherein the at least three trays ( 3 . 3 ' . 4 . 5 ) are parallelepiped, each well preferably having a height greater than the length and the width. Equipment according to claim 1 or 2, wherein the dimensions of the standard doors are 204 cm in height and 93 cm in width. The equipment according to any one of claims 1 to 3, wherein the height of each of the troughs or trough parts is between 140 cm and 200 cm and preferably between 160 cm and 180 cm, the length of each of the troughs or trough parts being between 100 cm and 150 cm, and wherein the width of each of the tubs or tub parts is between 60 cm and 90 cm. Equipment according to one of claims 1 to 4, wherein each of the at least three trays or trough parts has a weight below 90 kg and preferably below 70 kg. Equipment according to one of claims 1 to 5, wherein each of the at least three troughs circumferential grooves ( 8th in particular regularly distributed on the whole or part of the height of each of the trays in order to stiffen their structure. Equipment according to one of claims 1 to 6, comprising holding means ( 6 . 7 ), which are intended to prevent or at least limit the deformation of the side walls of the at least three troughs, wherein the troughs are enclosed. Equipment according to claim 7, wherein the retaining means ( 6 . 7 ) comprise: - a plurality of pairs of bars ( 61 . 62 ), each with a tie rod pair ( 63 . 64 each beam pair and each corresponding tie rod pair is intended to individually enclose the troughs, the beams ( 61 . 62 ) are intended to run in the groove of one of the trays along the length of the tray, the tie rods ( 63 . 64 ) hold the distance of the two beams, which are intended to run in the same groove along the width of the trough, or alternatively - a plurality of beam pairs ( 71 . 72 ), which are connected with a cable pair ( 73 . 74 ), each pair of beams ( 71 . 72 ) and corresponding cable pair ( 73 . 74 ) is intended to enclose the entirety of the at least three trays, wherein the beams of a same pair are intended to run in the grooves of the two outermost trays of the unit along the length of the trays, the cables being intended to travel along the trays Width of the tubs to run in the grooves of the corresponding tubs, the cables hold the distance between the beams and by clamping elements ( 75 . 76 ) can be stretched. Equipment according to one of Claims 1 to 8, in which the outlet ( 31 . 31 ' ) of the primary clarifier or at least one ( 3 . 3 ' ) of the two primary clarification tanks, a device (S, S '), such as an overflow, which measures the level of the effluents into the primary clarification tank ( 3 . 3 ' ), the input ( 30 . 30 ' ) of the primary clarifying tank or at least one of the two primary clarifying tanks is intended to be submerged, leaving at a lower level than the level of the discharges defined by the device (S, S '). Equipment according to claim 9, wherein the entrance ( 30 ' ) of the primary clarifier ( 3 ' ) or one of the at least two primary settling tanks at a lower level than the level at which the outlet ( 31 ' ) in the tub ( 3 ' ) opens, opens. Equipment according to one of claims 1 to 10, in which the mouths of the inlet ( 40 ) and the output ( 41 ) of the tub ( 4 ) for biological treatment at the level of two opposite corners of the trough for biological treatment along the diagonal of the trough ( 4 ) are arranged. Equipment according to one of Claims 1 to 11, in which the outlet ( 31 ' ) of the primary clarifier tank, intended to be adjacent to the biological treatment tank, prefilters ( 32 ), such as a filter brush. Equipment according to any one of claims 1 to 12, in which the biological treatment tray comprises a support lining ( 9 ) for the bacteria. Equipment according to claim 13, wherein the lining ( 9 ) is of the fluidized bed type and comprises a plurality of elements. Equipment according to claim 14, wherein at least one aerator ( 42 ) centered on the central axes of the biological treatment tub and in the direction of the length of the tub ( 4 ) is arranged for biological treatment. Equipment according to one of Claims 1 to 15, in which the outlet ( 51 ) of the secondary clarification tank ( 5 ) comprises a device (S '''), such as an overflow, which controls the level of water in the tub ( 5 ), the input ( 50 ) of the secondary clarifier trough two with respect to the median transverse plane of the trough ( 5 ) symmetric channels ( 501 . 502 ) which are capable of doubling the incoming flow extending in the vicinity of one of the side walls of the tub and at a lower level than that of the exit orifice (10). 51 ) of the secondary clarification tank ( 5 ), the two channels ( 501 . 502 ) in each case close to the two walls, which at the longitudinal ends of the tub ( 5 ), the output ( 51 ) is arranged on the side wall opposite the tub in the region of a central zone of the side wall. Equipment according to one of claims 1 to 16, in which the secondary clarification tank is an extraction pump ( 52 ) for the sludges and a sloping bottom ( 53 ) intended to transfer the sludge to the pump ( 52 ). Equipment according to claim 17, wherein the inclined floor ( 53 ) at least one removable element ( 530 . 531 ) of a flexible material, the or each element having two inclined side wings ( 532 ) and a middle part ( 533 ), wherein the or each of the elements is intended to be inserted through the manhole of the secondary settling tank, wherein it deforms elastically, the or each of the elements resuming its shape and automatically settling when placed at the bottom of the tub is. Equipment according to claim 18, in which the middle part ( 533 ) of the or each of the elements ( 530 . 531 ) is intended at the bottom of the tank, at least one extraction pump ( 52 ) for the sludges, the at least one extraction pump ( 52 ) for the sludge holding the inclined soil ( 53 ) in place. Equipment according to one of claims 1 to 19, in which each of the at least three trays ( 3 . 3 ' . 4 . 5 ) is of one piece and has dimensions such that the tub can be carried through standard doors. Equipment according to any one of claims 1 to 19, in which each of the at least three trays consists of two parts, in particular two half-shells, which can be conveyed independently and which are intended to be tightly connected to form the sealed casing of the tray wherein each of the two trough parts has such dimensions that the trough part can be conveyed through standard doors. Wastewater treatment plant, which results from the assembly of the equipment according to one of claims 1 to 21, wherein the waste water treatment plant comprises an input for the waste water and an outlet for the sewage water. Plant according to claim 22, employing equipment according to claim 2, in which the at least three trays ( 3 . 3 ' . 4 . 5 ) are connected to their side walls along the width of the troughs. Plant according to claim 22 or 23, employing equipment according to claim 6, 7 or 8, in which the holding means ( 6 ) enclose the tubs.

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