FR2607080A1 - TRACABLE MOBILE SLUDGE TREATMENT UNIT - Google Patents

Abstract

THE INVENTION CONCERNS A MOBILE UNIT FOR ON-SITE PURIFICATION OF BOURBIERS. THIS UNIT IS FORMED BY THE CONSTRUCTIVE AND FUNCTIONAL COMBINATION, CONTROLLED AND COMMANDED BY A COMPUTER RECORDING ON SITE THE PARAMETERS OF THE SLUDGE TO BE CLEANED, OF A MOBILE PLATFORM 1 SUPPORTING THE ENTIRE SYSTEM, INCLUDING IN PARTICULAR A CABIN OF COMMAND AND CONTROL 9 CARRIED OUT ON THE REAR PART 3 OF THE SAID PLATFORM 1 AND INCLUDING THE MEANS NECESSARY FOR THE OPERATION AND CONTROL OF THE VARIOUS BODIES SUCH AS PUMPS, VALVES, MOTORS, AGITATORS AND OTHERS, CONTAINERS 19-23 TREATMENT OF THE SLUDGE AND BINS CONTAINING THE TREATMENT PRODUCTS WHICH ARE SENT BY PUMPS INTO THE SAID CONTAINERS, A LAMELLAR SEPARATOR 29 RECEIVING THE PRE-TREATED SLUDGE AND SUBJECT TO A FIRST REMOVAL OF WATER BEFORE TRANSFERRING 8 WHERE IT IS SLOWLY BREWED TO BE SENT IN A FILTER-PRESS 30 WHICH SEPARATES IT INTO A CAKE, EVACUATES IN A TRANSPORT BUCKET COLLECTING IT, AND IN EA A CLARIFIED THAT IS ATTACHED TO THAT COMING OUT OF THE LAMELLAR SEPARATOR 29, OR SENT, UNDER THE ACTION OF PUMPS SLAVE TO THE COMMAND AND CONTROL UNIT, AT ANY POINT DESIRED OF THE INSTALLATION TO MODIFY THE RHEOLOGICAL PROPERTIES OF THE SLUDGE IN THIS LOCATION, THE ASSEMBLY INSTALLATION BEING SUBDIVIDED INTO A FIXED ASSEMBLY TO REMAIN ON THE TRAILER AND INCLUDING THE CAB AND ITS COMPONENTS, THE THICKNESS AND THE FILTER PRESS, AND IN A SEPARATELY TRANSPORTABLE ASSEMBLY AND CONTAINING THE REST OF THE ELEMENTS OF THE INSTALLATION, ESPECIALLY THE TREATMENT CONTAINERS AND THE LAMELLAR SEPARATOR, BOTH SETS EACH PROVIDED WITH A RETRACTABLE SURVEILLANCE GATEWAY IN THE TRANSPORT POSITION.

Description

I 2607080

  The present invention relates to a mobile unit

  towable for the treatment of sludge.

  Many industrial, mining or agricultural treatments

  The formation of large amounts of sludge formed from a mixture of water and various solids Thus, for example, the execution of a borehole results in the gradual discharge into a related quagmire of used, non-reusable drilling fluids, which consist of a mixture of water containing chemicals. at high pH, and mineral particles of very sizes and natures

varied in suspension.

  In the same way, various agri-food treatments, such as sugar beet or olive pressing, leave their place in quagmires

  we only know how to make large quantities of malodorous mud

  rants, consisting of a mixture of water and pulp that would

to be able to separate.

  To respect the environment, it is necessary to be able, on the one hand, to treat the water of this sludge, so that it

  not be polluting, then separate and reject it without

  in the river system, and of being able, from

  on the other hand, sufficiently dehydrate the solids and compact them to a minimum volume, so that they can cheaply be shoveled into containers and transported

  by road and / or rail to another place of

  use, as is the case for agro-solid residues

  foodstuffs (animal feed, oil cake, etc.), either dumped in landfills or on land

  fields or the like without the risk of polluting them or of

  to pay large expenses, as is the case, in particular, when it comes to drilling mud

wastewater.

  With regard to drilling mud residues, it is not currently known to dehydrate solid residues

  sufficient for them to be directly trans-

  portable, by dump truck, for example. We are indeed

  obliged, after centrifugation, as they are still too

  to add large amounts of cement to the

  lidify before shoveling, which is extremely expensive.

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  Another aspect of these problems is that the activity

  giving rise to the formation of these sludges is not obliga-

  permanently, but is often sporadic, as is the case in the case of agri-food processing, or even a temporary one, for example in the case of of production, in which case the drilling machinery must be moved one

  place to another, that is, a purely seasonal character-

  deny, for example when it comes to! cope with the huge

  increase in wastewater, especially in local

  by the summer tourist season, and to ensure

  their immediate and rapid treatment.

  For these reasons, it is necessary for the sludge treatment system to be mobile so that it can be installed where needed during a campaign leading to the formation of the sludge treatment system.

  sludge; it is also necessary for the system to be relatively

  a little inconvenient, while having a processing capacity

  (from 20 to 90 cubic meters of mud per hour), because the

  reserved for oil drilling, for example, are

more and more cramped.

  The invention provides a solution to the problem mentioned above and relates to a mobile towable sludge treatment unit having a reduced footprint at

  regulatory standards for its on-road transport, a

  relatively high treatment compared to its volume.

  According to an essential characteristic of the invention, the mobile towable sludge treatment unit comprises in a constructive and functional combination: a mobile platform directly drivable by the road to the working place where it is immobilized; on said platform for the mounting and the removable or permanent attachment of sludge treatment members, a control and control cabin fixed on said platform and comprising the means necessary for the control and the control the operation of various apparatus such as trays for treatment products, motors, agitators,

  return pumps, cylinders, valves, regulators and other

  on progression, at its different stages of treatment,

  of the mud to be purified, the aforementioned cabin having an armor

  reinforcing ture allowing on site, at the workplace of the unit, the installation and fixing, on the roof of said cabin mounted at the rear of the platform,

  removable storage structure and first decantation

  sludge with mud receiving and treatment tanks, equipped with stirrers, for

  to receive the sludge to be treated and also the products of

  such as polyelectrolytes, lime, chloride

  ferric, etc ... contained in the cabs of the cabin

control and control,

  a lamellar separator associated with said treatment tanks

  sludge and to which is delivered, by pipes, the sludge previously treated in said tanks, said lamellar separator being mounted, to pour the sludge therein

  already largely free of water, over a thick

  on the lower part of the platform to the side of the cab and from which the floc is sent by a pump into a belt press filter carried on the upper front part of the platform, at such a high level as possible, at

  extreme edge of said platform.

  Thus, a mobile processing unit is realized, of which

  the main part, namely the semi-trailer carrying the

  the thickener and the belt filter have an overall width not exceeding the 2 m50 provided by the

Traffic Laws.

  However, to be able to quickly access from the cabin to the various members of the processing unit, there is provided on the side of the latter, on two levels, a stepped bridge provided with a safety guardrail, the assembly being able to

  on the road be retracted or folded in the plane of the long face

  of the cabin which, in turn, includes a ladder

  connecting the two overlay bridges.

  According to a preferred embodiment, the platform

  mobile form consists of a semi-trailer towable to

  autonomous tractor, the belt filter press being placed

  above the coupling point, on the highest part of the semitrailer.

  Thus, between the ground and the exit of expulsion

  by the belt filter of the cake of material freed from

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  its water, a sufficient interval for the insertion on the place

  operation of the purification unit, a container receiving

  trice can be, in a known manner, mounted after filling,

  on a truck equipped with a hydraulic lift.

  At the same time, a perfect seating of the treatment unit is obtained on the treatment site because the semi-trailer is advantageously equipped, in known manner, with

  hydraulic support cylinders each provided with anchor pads.

  According to another characteristic of the invention, the pipe discharging the water separated from the solid products in the

  filter press is controlled by a pump delivering the-

  said water in the piping discharging itself the clarified water separated from the solid products in the lamellar separator

  placed in a high position above the thickener.

  Other features and advantages of the invention

  will emerge from the description which follows with regard to the

  annexed diagrams which represent, schematically and simply as an example, a prepared embodiment of the

sludge treatment.

  In these drawings: FIG. 1 is a longitudinal elevational view showing the

  semi-trailer, the cab, the various bins

  and their agitators, lamellar separator and thickener, and at the front, above the coupling point to the semi-trailer tractor, the belt filter used to complete the desiccation treatment.

  Fig. 2 is a schematic view in side elevation, illus-

  the circulation of products in the unit of

sludge treatment.

  Fig. 3 is a top plan view of the cab mounted on the trailer, showing the different elements

  that it contains and the upper caillebottis allows

  access from the side bridge,

  above the lamellar separator overhanging

  sisseur. As can be seen quite schematically in Figure 1 of the drawings, the mobile unit essentially comprises for its transport on the road and its mobility in the field, a semi-trailer designated as a whole by the

  reference 1, having a part 2 coming into position

  placement of the unit, place yourself on the tractor coupling

  above the driving wheels of the latter, and a part 3 sur-

  lowered comprising, in known manner, two axles 4 and 5

equipped with wheels 6 and 7.

  On the lower back 3 of the platform

  1 is arranged a lower structure consisting of a thick

  8 and a control cabin designated as a whole.

  9 and comprising (see Fig. 3) on both sides of a partition wall 10, two compartments 11 and 12, into which two doors 13 and 14 can be opened from the outside, respectively provided with windows 15 and

  16. In this cabin are mounted permanently the different

  maneuvers and control of the mobile processing unit.

  mud, which will be discussed later.

  Above the roof 17 of the cabin 9 is provided a reinforcing reinforcement including poles such as

  18 to support and maintain receiving receptacles

  communicating sludge units 19, 20, 21, 22 and 23, which are

  each viewed from an agitator 24, 25, 26, 27 and 28, respectively.

  Above the thickener 8 is placed a separator

  lamellar 29 whose function will be indicated later.

  On the raised anterior 2 of the semi-

  trailer 1 is subject to a belt filter press 30. The position

  tion of this filter, constituting in itself a relatively heavy device, ensures a good grip of the wheels of the tractor when moving the trailer 1, which balances the load.

  In the working position of the unit, and after disengaging

  of the tractor itself, the semi-trailer is supported in the known manner with the aid of ground anchor pads 31 which are moved and held in a stable position by

cylinders 32.

  The superimposed structures of the mobile processing unit

  are accessible by means of retractable or tilting gangways 33 and 34, on the one hand, for the lower structure,

  and 35, on the other hand, for the upper structure.

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  These bridges, connected together by a ladder 36, are each provided with a designated guardrail

  in particular by references 37, 38 for the

  above and by 39 for the upper bridge. As can be seen in Figure 1 of the drawings, the front and rear portions 33 and 34 of the lower gangway are connected by a

  37 'staircase compensating the level shift.

  A stiffening strut 41 advantageously connects the front cantilevered portion of the lamellar dryer 29

  and the upper part of the belt filter press 30.

  With regard to the actual cabin 9 of

  and control, divided by wall 10 into two compartments

  timings 11 and 12, it contains all the necessary elements

to the treatment of mud.

  Thus, this cabin 9 comprises, in the

  former part 11, a cabinet 42 serving for example for the storage of effects, plans, documents and the like, and

  two cabinets 43 and 44 for the different electrical circuits

  control and power supply units, control boxes 45, 46, 47, 48 and 49 for the drives (not shown) of the motors of the various pumps illustrated schematically in FIG.

figure 2.

  A table 50, which covers the drive motor

  52 of the main pump 51, completes the installation.

  In the second posterior compartment 12 is

  arranged, essentially in the axial direction, the main pump

  51, which can advantageously be a pump of the type

  "MOINEAU" with eccentric rotor, which removes mud in the bunker

  to be purified and sends it to the top mounted receptacles 19 to 23 above the control and control booth 9, through the reinforcing posts 18 and

Support.

  The motor 52 of the pump 51 is placed in the compartment

11.

  In the compartment 12, are arranged along the main pump 51, two trays 53 and 54 to treatment product and, at the end, a buffer tank 55 filled with sludge and intended to protect the main pump 51 against a vacuum operation. Transversally, along this buffer tank 55, are provided two tanks 56 and 57 advantageously having the same capacity as the tanks 53 and 54, namely a capacity of 4 m3

everyone, for example.

  Between bins 53, 54, on the one hand, and bins 56, 57, on the other hand, are advantageously arranged two pumps 58

  and 59, respectively, which are intended to repress

  for treating bins in the upper receptacles

  contiguous and communicating 19, 20, 21, 22 and 23 constituting

  seems the actual treatment chamber of mud that,

  depending on its nature, is treated by flocculation or coagula-

  tion, or by both processes at a time.

  Above pumps 58 and 59 and the main pump

  blade 51 is provided a grating 60 allowing the service personnel to access, through a small staircase 61, to the front bins

  56 and 57 containing treatment products.

  As seen in Figure 3, the bins 53, 54, 56

  and 57, placed in the cabin 9, are each equipped with an agitator

  62, 63, 64 and 65, respectively, to ensure the

  permanent mixing of treatment products.

  As can be seen in Figure 2,

  a pump 66 is provided below the thickener 8 for

  to see the floc of the latter, by the pipe 67, to the filter-

30 belt press.

  At the bottom of this filter press 30, a drain line 68, controlled by a pump 69, discharges the water

  clarified, by a line 70 directly connected to a

  71 by which the water separated from the mud comes out of the separa-

laminar 29.

  From the pipe 71, it is possible, if desired, by a not shown pipe which is controlled by a valve

  volumetric (also not shown) which is ordered from

  then the cabin 9, reinjecting water at a desired point of the installation, especially in the thickener, for the case where the fluidity of the floc would be insufficient to be able to treat this.

  last in the 30-band filter press.

  A computer, coupled with devices for analyzing the

  mud which provide the desired parameters (density,

  dity, particle size of the solid, plasticity, etc ...), ensures the adjustment of the valves and pumps controlling the circuit described by

8 2607080

  the sludge in the installation, as well as the precise dosing of the treatment products to be added to the sludge before separating

  water and solid constituents in suspension.

  It is thus possible to adapt the treatment unit to any sludge quality encountered. The operation of the mobile processing unit is

deduced easily from Figure 2.

  The mud taken from the quagmire by the pump 51,

  through the buffer tank 55 is loaded into the upper bins.

  19 - 23 preprocessors forming a capacity

  72 constantly stirred by agitators 24-28.

  In this capacity, one adds to the choice according to the

  lyses and measurements made by pumps 58 and 59, the quantity

  required treatment product. The mud is then

  sent via lines 73 and 74 into the lamellar separator

  29 is subjected to a first separation of the water it contains, said water being discharged through the pipe 71

  coupled to the pipe 70 from the filter press 30.

  From the lamellar separator, the already thickened mud passes into the thickener 8 below where it is slowly

  stirred by a pale stirrer not specially shown.

  The floc formed in the thickener is then sent by the pump 66 and the pipe 67 into the belt filter press

  who finishes his treatment and ejects by an inclined

  75, in a suitable receiving bin, the cake formed of substantially anhydrous solids and discharges, through the drain line 68 and the pump 69 the water which has separated, sending it join, through the pipe 70 , that evacuated by

driving 71.

  Incidentally, an air conditioner 75 can be mounted in the enclosure 12 of the cabin 9 to regulate the temperature

inside said cabin.

  It goes without saying that the mobile sludge treatment unit has only been described and represented for explanatory purposes, purely limiting, and that various modifications of details could be made to the indicated embodiment, without

  so far from the field of the invention.

  Thus, in particular, the pump 66 could be

  subject to the pump 69 for draining the filter press 30 to the belt.

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Claims (8)

CLAIMS V E N D I C A T I 0 N S   1. Mobile towable sludge treatment unit,   characterized by the fact that it comprises in combination   tructive and functional: - a mobile platform (1) directly drivable by road to the work place o it is immobilized, - means provided on said platform for mounting and removable or permanent attachment of sludge treatment members, a control and control cabin (9) fixed on said platform and having the necessary means   control and control of the operation of   such as bins for treatment products, motors, agitators,   tors, return pumps, cylinders, valves, regulators and others ensuring progression, at its various stages of   treatment, of the mud to be purified, the aforementioned cabin (9)   sensing a reinforcement reinforcement (18) allowing on site, in the workplace of the unit, the installation and fixing, on the roof of said cabin (9) mounted on the rear part (3) of the plate -form (1), a removable structure for storage and first settling of the sludge   which has receptacles (19, 20, 21, 22 and 23) for receiving   and sludge treatment, provided with agitators (24, 26, 27 and 28) for receiving the sludge to be treated and   also pretreatment products such as poly-   electrolytes, lime, ferric chloride, etc. contained in the tanks (53, 54, 56 and 57) of the control and control cabin (9), - a lamellar separator (29) associated with said tanks (19,   , 21, 22 and 23) for pre-treatment of sludge and   which is delivered via pipes (73, 74), the sludge previously treated in the aforementioned tanks, said lamellar separator (29) being mounted, to dump the sludge already strongly free of water, above 'a   thickener (8) placed on the lower part (3) of the platform   form (1) next to the cabin (9) and from which the floc is fed by a pump (66) and a pipe (67) into a belt press filter (30) carried on the front part (2) of platform (1), at as high a level as possible, at 2607080   extreme edge of said platform.   2. mobile towable sludge treatment unit according to claim 1, characterized in that it has on the side, at two levels corresponding to one of the floor of the cabin (9) and the filter press (30) to band, and the other at the base of the receiving and treatment tanks (19-23)   mud and lamellar separator (29), a footbridge (33 -   ) provided with a guardrail (37-39), the on-road assembly can be retracted or folded in the plane of the longitudinal vertical face of the cabin (9) which, for its part, has on its wall a ladder (36) connecting the two gangways (34 - 35) superimposed.   3. Mobile towable sludge treatment unit according to   claims i and 2, characterized in that the   mobile platform (1) is constituted by a semi-trailer attachable to a self-propelled tractor, the filter-press (30) band being placed above the coupling point, on the part la highest (2) of the semi-trailer.   4. Mobile towable mud treatment unit according to   claims 1 to 3, characterized in that the con-   pick (70) discharging water separated from solid products in the   filter-press (30) is controlled by a pump (69) de-   delivering said water into the piping (71) discharging itself the clarified water separated from the solid products suspended in the lamellar separator (29) placed in the up position above thickener (8).   5. Mobile towable mud treatment unit according to   claims 1 to 5, characterized by the fact that a   see-buffer (55), arranged transversely in the cab (9) control and driving, is inserted in the circuit of   sludge upstream of the main feed pump (51).   6. Mobile trailer mud treatment unit according to   claims 1 to 4, characterized by the fact that   the transverse beam (60), provided in the lower structure of the treatment unit, provides access by a staircase (61) to the bins (56-57) for treatment product which are placed at the end of the cabin (9) , parallel to the buffer tank (55)   protection of the main slurry pump (51).   he 2607080 7. Mobile towable mud treatment unit according to   Claims 1 to 6, characterized in that the water   leaving the filter-press (30) band can be recycled at any point of the installation to possibly change the rheological properties of the sludge to be treated. 8. Mud mobile towable treatment unit according to   claims i to 7, characterized in that the   filter press (30) is arranged on the most   high of the trailer (1), advantageously at the frontier end   of the raised anterior part (2) under which the tractor is hitched.