• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
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  • 优先权
    • 专利摘要:
    A method of treating an aqueous phase containing a pulverulent absorbent material comprising: a step of desorption of the organic material absorbed from the used material; a first step of separation by decantation of the desorbed organic material from the remainder of a first aqueous phase containing said at least partially regenerated material leading to the production of a second aqueous phase; a step of neutralizing said second aqueous phase; a second step of separating said at least partially regenerated material from said second aqueous phase leading to the production of a third aqueous phase containing said at least partially regenerated material.
    公开号:BE1019631A3
    申请号:E2009/0810
    申请日:2009-12-23
    公开日:2012-09-04
    发明作者:Abdelkader Gaid；Philippe Sauvignet
    申请人:Veolia Water Solutions & Tech；
    IPC主号:
    专利说明:

    Process and installation for the treatment of an aqueous phase containing a used adsorbent material
    The invention relates to the field of water treatment.
    More specifically, the invention relates to water treatment processes for their purification or their potabilization, implementing at least one treatment step during which the water is brought into contact with an adsorbent powder material to reduce the organic matter content.
    Prior art
    Such adsorbent materials can be used in the context of such processes and installations in different configurations.
    According to one type of configuration, the adsorbent material is provided in the form of a fixed bed retained within a filter installation by appropriate means. The water to be treated passes through this fixed bed on which the water is filtered and the organic material is adsorbed. For the production of such filter beds, granular activated carbon (GAC) is frequently used. The AGC has an average particle size of between one and a few millimeters.
    According to another type of configuration, the granular adsorbent material is added to the water to be treated in a reactor at a sufficient contact time to allow the adsorption of the organic material. This adsorbent material used must then be separated from the treated water by appropriate means. This second type of configuration relates more particularly to the invention.
    For this type of configuration, powdered activated carbon (CAP) is frequently used. Powdered activated carbon is understood to mean an inert carbon material having a highly developed intrinsic porosity with a specific surface area, which gives it the property of adsorbing, that is to say of fixing on its internal surface, organic molecules, and to catalyze reactions. Activated carbon can be of plant origin (coconut, etc.) or mineral (coal, etc.). The specific surface area of an activated carbon, expressed in square meters per gram of charcoal, is measured according to the BET method (named after its authors: Messrs Brunauer, Emmet and Teller). This consists in quantifying the surface accessible by the molecules of a gas (nitrogen or argon) in the pores of the active carbon.
    The CAPs used in the context of water treatment processes generally have an average particle size of between 10 μm and 50 μm and a specific surface area corresponding to an iodine number of between 800 and 1000 mg / g of CAP.
    According to the second type of configuration indicated above, the water is brought into contact with the adsorbent powder material for a sufficient contact time to allow the bulk of the organic material to be adsorbed on the material in question. This mixture of water and adsorbent material is then subjected to a separation step to obtain water freed from most of its organic material and sludge containing the adsorbent material on which is adsorbed organic matter and pollutants. This separation step is generally carried out by decantation, the sludge being recovered in the lower part of the clarifier and the clarified water in the upper part thereof.
    Given the relatively high cost of the adsorbent materials, especially activated carbon powder, it is common during the implementation of water treatment processes using the injection of such a material, to recycle this material. this. For this purpose, it is known to treat the sludge recovered at the end of the separation step indicated above and containing adsorbent material, so as to eliminate most of the aqueous phase. This step is generally carried out by hydrocycloning. At the end of this step, under the hydrocyclone, a phase is obtained containing adsorbent powder material which can be reintroduced into the water treatment process. In practice, this phase contains a high proportion of pulverulent material and still water and is in the form of a relatively fluid sludge, most of the aqueous phase of the sludges from the separation step indicated below. above having however been removed in overflow of the hydrocyclone.
    An example of such a method of the prior art, furthermore including a coagulation step and a flocculation step, is described in the French patent application FR-A-2868064.
    According to such prior art, the adsorbent powder material is not regenerated when it is recycled. In particular, the adsorbent material used is not freed by the hydrocycloning step of most of the organic material adsorbed thereon. The organic material is recycled but its adsorption capacity is greatly reduced which greatly reduces the interest of such recycling.
    The adsorption capacity of an adsorbent material depends on several factors which are a function of the nature of the latter. In the case of the CAP, the adsorption capacity is essentially linked to its porosity and therefore to its specific surface area. When the CAP is used, that is to say when it has been used to adsorb organic matter contained in a fluid, a proportion of its pores is occupied by adsorbed material and therefore unavailable.
    In practice, the adsorption capacity of a powdery adsorbent material can be evaluated by measuring its iodine number. The adsorption capacity by measurement of the iodine number indicates the amount of iodine, expressed in milligrams, adsorbed per gram of powdered activated carbon powder material. For a new CAP, the iodine index is generally between 800 and 1,000 according to the manufacturers. This measurement of the iodine number can in particular be carried out according to the protocol proposed by ASTM under the reference D4607.
    Objectives of the invention
    An object of the present invention is to provide a method which, in at least one of its embodiments, at least partially regenerates the adsorbent material from a water treatment plant, hereinafter called adsorbent material used that is to say to restore at least partly its adsorption capacity vis-à-vis the organic matter.
    Another object of the invention is to propose a method which, in at least one of its embodiments, can be implemented in small-sized installations, of simple design, requiring only easy and infrequent maintenance. , and can easily be integrated into conventional water treatment plants for purification or purification.
    Yet another object of the invention is to describe such a method which, in at least one of its embodiments, makes it possible to restore 50% of the adsorption capacity of the adsorbent material, that is to say to to obtain an at least partially regenerated adsorbent material whose adsorption capacity corresponds to at least 50% of that of the same new adsorbent material.
    Another object of the invention is to propose an installation for the implementation of such a method.
    Presentation of the invention
    These various objectives, as well as others which will appear later, are achieved by the invention which relates to a method of treating an aqueous phase containing an adsorbent powder material, such as powdered activated carbon, used from a purification or water purification plant implementing at least one step of injecting said adsorbent powder material into said water and a step of adsorbing at least a portion of the organic material contained in said water on said adsorbent powder material, said process comprising at least: a first decanting desorption step of most of the adsorbed organic material on the used adsorbent powder material comprising contacting said aqueous phase containing used adsorbent powder material with a compound desorbent, said first desorption step leading to obtaining a an aqueous phase containing at least partially regenerated powdery adsorbent material and desorbed organic material; a first step of separation by decantation of most of the organic material desorbed from the remainder of the first aqueous phase containing the at least partially regenerated powdery adsorbent material, said first separation step leading to the production of a second aqueous phase containing the partially regenerated point adsorbent powder material; a first step of neutralizing said second aqueous phase containing the at least partially regenerated powdery adsorbent material; a second step of separating the at least partially regenerated adsorbent powder material from said second aqueous phase, said second separation step leading to the production of a third aqueous phase containing the at least partially regenerated adsorbent powder material.
    The process according to the invention makes it possible, for example, to restore the adsorption capacity of a used CAP, having been used in a water treatment process and having an iodine number of between 200 and 350, with a capacity of adsorption corresponding to an iodine number between 400 and 600 for an adsorption capacity of the same nine CAP between 800 and 1000.
    Thus, the invention allows in its preferred embodiment, to reduce the adsorption capacity of the activated carbon to at least 50% of its initial value.
    According to an advantageous characteristic, said first desorption step consists in bringing said aqueous phase containing the adsorbent powder material used into contact with an alkalinizing compound making it possible to bring its pH to a pH of at least 9.
    According to another advantageous characteristic, said first desorption step comprises contacting said aqueous phase containing the adsorbent powder material used with an acidifying compound making it possible to bring its pH to a maximum pH of 6.
    The fact of implementing injections of alkalizer or acid acid has the advantage of allowing to desorb different parts of the organic material adsorbed on the adsorbent powder material.
    According to an advantageous embodiment, a process according to the invention comprises at least: a second stage of desorption of most of the residual organic material adsorbed on the partially regenerated adsorbent powder material contained in said third aqueous phase, said second stage of desorption leading to the production of a fourth aqueous phase containing the adsorbent powder material at least partially regenerated.
    a third step of separating most of the residual organic material desorbed from the remainder of said fourth aqueous phase, said third separation step leading to the production of a fifth aqueous phase containing the at least partially regenerated adsorbent powder material; a second step of neutralizing said fifth aqueous phase containing the at least partially regenerated adsorbent powder material; a fourth step of separating the at least partially regenerated adsorbent powder material from the remainder of said fifth aqueous phase.
    In this case, advantageously, said first desorption step (respectively said second desorption step) consists in bringing into contact said aqueous phase containing the used adsorbent powder material (respectively said third aqueous phase) with an alkalinizing compound which makes it possible to bring about its pH at a pH of at least 9, and in that said second desorption step (respectively said first desorption step) consists of bringing into contact said third aqueous phase (respectively said aqueous phase containing used adsorbent powder material) with an acidifying compound for bringing its pH to a maximum pH of 6.
    As explained above, desorption by means of an alkalizer or an acidifier each leads to desorb a different part of the organic material adsorbed on the adsorbent powder material. The combination of a desorption by means of an alkalinizer and desorption by means of an acidifier therefore leads to optimize the reduction of the organic material adsorbed on the powder material both in terms of the quantity and the Preferably, said first or second desorption step comprises contacting said aqueous phase with an alkalizing compound to bring its pH to a pH of about 11. It is in fact at this pH of about 11 that the fastest desorption of the adsorbed organic material has been observed, in particular on CAP.
    During this desorption step, different types of alkalizing compounds may be used. Preferably soda will be chosen which has the advantage of being inexpensive and readily available.
    Advantageously, said acidifying compound belongs to the group comprising: citric acid; sulfuric acid.
    It has been found that these acids make it possible to obtain good results at a reduced cost.
    Advantageously, said first neutralization step and said second separation step are carried out concomitantly during a settling step upstream of which sufficient service water is supplied to said second aqueous phase containing the adsorbent powder material. at least partially regenerated. The term "sufficient amount" means an amount for lowering the pH to a pH of about 7.
    According to another variant, said first neutralization step and said second separation step are carried out concomitantly during a hydrocycling step during which service water is supplied as washing fluid. In such an embodiment, the service water supplied as separation fluid in the hydrocyclone will be provided at a rate and in a quantity sufficient to observe a lowering of the pH to about 7.
    According to a variant, said third separation step is a decantation step.
    Advantageously, said second neutralization step and said fourth separation step are carried out concomitantly during a settling step upstream of which sufficient service water is supplied to said fifth aqueous phase containing the adsorbent powder material. at least partially regenerated.
    Preferably, said second neutralization step and said fourth separation step are carried out concomitantly during a hydrocycling step during which service water is supplied as washing fluid.
    The present invention also covers any installation for the implementation of a method for treating an aqueous phase containing an adsorbent powder material, such as powdered activated carbon, used from a purification or water purification plant. water implementing at least one step of injecting said adsorbent powder material into said water and at least one step of adsorbing at least a portion of the organic material contained in said water on an adsorbent powder material characterized in that it comprises: first feed means in said second aqueous phase containing adsorbent powder material used a desorbent compound leading to obtaining a first aqueous phase containing adsorbent powder material at least partially regenerated and the material organic desorbed; first means for separating most of the organic material desorbed from the remainder of the first aqueous phase containing the at least partially regenerated adsorbent powder material leading to the production of a second aqueous phase containing the partially regenerated adsorbent powder material, said first separation means comprising a decanter; first means for supplying a compound for neutralizing said second aqueous phase containing the at least partially regenerated powdery adsorbent material; second means for separating the at least partially regenerated adsorbent powder material from the remainder of said second aqueous phase leading to the production of a third aqueous phase containing the at least partially regenerated adsorbent powder material.
    According to another embodiment, such an installation comprises: second means for feeding into said third aqueous phase a desorbent compound leading to the production of a fourth aqueous phase containing at least partially regenerated powdery adsorbent material and desorbed organic matter; third means for separating most of the residual organic material desorbed from the remainder of the fourth aqueous phase containing the at least partially regenerated powdery adsorbent material leading to the production of a fifth aqueous phase containing the at least partially regenerated adsorbent powder material ; second means for supplying a compound for neutralizing said fifth aqueous phase containing the at least partially regenerated powdery adsorbent material; fourth means for separating the at least partially regenerated adsorbent powder material from the remainder of said fifth aqueous phase.
    According to a preferred variant, said third separation means include a decanter.
    Advantageously, said first and / or second means for supplying a compound for neutralizing said second and / or said third aqueous phase containing the at least partially regenerated adsorbent powder material consist of means for supplying water.
    According to a first variant, said second separation means and / or said fourth (6 ') separating means include a decanter. According to another variant, they include a hydrocyclone.
    The invention, as well as the various advantages that it presents, will be better understood thanks to the following description of two nonlimiting exemplary embodiments thereof given with reference to the drawings in which: FIG. 1 schematically represents , a first embodiment of an installation for implementing the method according to the invention; FIG. 2 schematically represents a second embodiment of an installation for implementing a method according to the invention; - Figure 3 schematically shows a third embodiment of an installation for implementing a method according to the invention; FIG. 4 schematically represents a fourth embodiment of an installation for implementing a method according to the invention.
    First embodiment
    With reference to FIG. 1, an aqueous phase containing CAP used from a water treatment plant is brought via a pipe 1 into a settling tank 2.
    Soda is added to this aqueous phase containing CAP used in line 1. This soda supply makes it possible to increase the pH of the initial aqueous phase containing the CAP used and to obtain a first aqueous phase whose pH is increased to a value of about 11. This increase in pH makes it possible to rapidly desorb the organic material absorbed on the CAP used and to release it in the first aqueous phase.
    The settling which takes place in the decanter 2 makes it possible to obtain: on the one hand an aqueous phase containing the desorbed organic matter and to recover this aqueous phase containing the organic matter desorbed in the upper part of the decanter 2 in a trough 3, and ; - On the other hand, a second aqueous phase containing partially regenerated CAP in the form of sludge that can be discharged through the lower part of the decanter 2.
    These sludges containing the regenerated CAP and a little water are fed through a pump 4 and via a pipe 5 into a second decanter 6.
    Water is injected into the second decanter 6, in an amount sufficient to bring the pH of the phase present in the decanter to a value of about 7.
    The organic matter still present in the sludge from the first settling tank 2 can thus be separated by settling occurring in the second settling tank 6.
    This aqueous phase containing the remaining organic matter can be discharged through a chute 7 while a third aqueous phase containing the partially regenerated CAP virtually free of organic matter and still containing a very small amount of water can be recovered in the lower part. of the decanter 6 and discharged through a pump 8 via a pipe 9.
    The third phase containing the partially regenerated CAP obtained at the outlet of the pipe 9 can be reused in the context of the water treatment plant that has produced the CAP used.
    Second embodiment
    According to Figure 2, a second embodiment of an installation for implementing the method is shown schematically.
    In this second embodiment, the second phase containing the regenerated CAP from the first decanter 2 through line 5 is supplied not to a second decanter 6 but to a hydrocyclone 10.
    Conventionally, this second phase is injected tangentially in this hydrocyclone 10. The latter is also provided with a separation fluid consisting of water and supplied to the lower part of the hydrocyclone 10 by means suitable feed means 11 for bringing this water tangentially into the hydrocyclone 10.
    This hydrocyclone 10 allows the recovery underwater of a third aqueous phase free of its organic material and containing almost substantially at least partially regenerated CAP and in its upper part 12 an aqueous phase containing the rest of organic matter.
    Variant of the first and second embodiments
    In a variant of the first and second embodiments which have just been described respectively with reference to FIGS. 1 and 2, the injection of soda is replaced by an injection of acid such as sulfuric acid or citric acid. .
    The fact of carrying out acid injections has the advantage of allowing to desorb a different part of the organic material adsorbed on the adsorbent powder material than that which is desorbed by the soda injection.
    Third embodiment
    FIG. 3 illustrates a third embodiment of the technique according to the invention.
    As shown in this FIG. 3, an installation according to this third embodiment comprises putting in series two installations according to the first embodiment.
    Thus, in this third embodiment, the third aqueous phase containing CAP at least partially regenerated, from the remover of the decanter 6, is fed through a pipe 1 'in a decanter 2'.
    Acid is added to this third aqueous phase containing CAP used in line 1 '. This acid supply makes it possible to reduce the pH of the third aqueous phase containing the partially regenerated CAP and to obtain a fourth aqueous phase whose pH is brought to a value of less than 7. This decrease in pH makes it possible to rapidly provoke the desorption organic matter absorbed on CAP used and release it in the fourth aqueous phase.
    As explained above, the acid or sodium deorptions each lead to desorb a different part of the organic material adsorbed on the adsorbent powder material. The combination of desorption with sodium hydroxide and desorption with acid thus leads to optimize the reduction of the organic material adsorbed on the powder material both in terms of quantity and diversity.
    The settling which takes place in the decanter 2 'makes it possible to obtain: on the one hand an aqueous phase containing the desorbed organic matter and to recover this aqueous phase containing the organic material desorbed in the upper part of the decanter 2' in a trough 3 ', and; - On the other hand, a fifth aqueous phase containing partially regenerated CAP being in the form of sludge can be discharged through the bottom of the decanter 2 '.
    This sludge containing the regenerated CAP and a little water are fed through a pump 4 'and via a pipe 5' in a fourth settler 6 '.
    Water is injected into this fourth decanter 6 ', in an amount sufficient to bring the pH of the phase present in the decanter to a value of about 7.
    Organic matter still present in the sludge from the third decanter 2 'can thus be separated by settling occurring in the fourth settler 6'.
    This aqueous phase containing the remaining organic matter can be discharged through a chute 7 'while a last aqueous phase containing the partially regenerated CAP virtually free of organic matter and still containing a very small amount of water can be recovered in the part bottom of the decanter 6 'and discharged through a pump 8' through a pipe 9 '.
    The last phase containing the partially regenerated CAP obtained at the outlet of the pipe 9 'can be reused in the context of the water treatment plant that has produced the CAP used.
    Fourth embodiment
    FIG. 4 illustrates a fourth embodiment of the technique according to the invention.
    As shown in this FIG. 4, an installation according to this fourth embodiment comprises putting in series two installations according to the second embodiment.
    Thus, the third phase containing the regenerated CAP from the first hydrocyclone 10 through line 13 is fed to a second decanter 2 '.
    Acid is added to this third aqueous phase containing CAP at least partially regenerated at line 13. This acid supply makes it possible to reduce the pH of the third aqueous phase containing the partially regenerated CAP and to obtain a fourth aqueous phase whose pH is brought to a value less than 7. This decrease in pH makes it possible to rapidly desorb the organic material absorbed on CAP used and release it into the aqueous phase.
    The decantation which takes place in the second decanter 2 'makes it possible to obtain: on the one hand an aqueous phase containing the desorbed organic matter and to recover this aqueous phase containing the organic material desorbed in the upper part of the decanter 2' in a chute 3 ', and; - On the other hand, a fifth aqueous phase containing partially regenerated CAP being in the form of sludge can be discharged through the bottom of the decanter 2 '.
    These sludges containing the regenerated CAP and a little water are fed through a pump 4 'and via a pipe 5' into a second hydrocyclone 10 'in which it is injected tangentially.
    This hydrocyclone 10 'is also provided with a separating fluid consisting of water and supplied to the lower part of the hydrocyclone 10' by suitable feed means 11 'to bring this water tangentially. in the hydrocyclone 10 '.
    This hydrocyclone 10 'allows the recovery underwater 13' of a last aqueous phase free of its organic material and containing almost substantially at least partially regenerated CAP and in its upper part 12 'an aqueous phase containing the remainder of organic material.
    The last phase containing the partially regenerated CAP obtained at the 13 'second hydrocyclone' can be reused in the context of the water treatment plant that has produced the CAP used.
    Variant of the third and fourth embodiments
    In a variant of the third and fourth embodiment, it may be provided first to carry out desorption with acid and secondly with desorption with sodium hydroxide.
    According to an optional feature, a step of determining the desorbed organic matter concentration present in the aqueous phase at the outlet of the second decanter or the first hydrocyclone is carried out. This makes it possible to evaluate the desorption rate achieved and consequently obtain information representative of the regeneration level of the adsorbent powder material. This information can then be compared with a predetermined threshold value in order to evaluate the desirability of implementing a second desorption. Thus, when it is considered that the regeneration level of the adsorbent agent is insufficient, a second desorption will be implemented.
    Other variant
    According to another variant, it may be provided that the water required for the neutralization of the second and / or third aqueous phases is injected upstream of the decanter and is intimately mixed by circulating the mixture obtained after injection in a static mixer.
    权利要求:
    Claims (19)
    [1]
    1. A process for treating an aqueous phase containing an adsorbent powdery material, such as powdered activated carbon, used from a purification plant or water purification plant implementing at least one injection step of said adsorbent powder material in said water and a step of adsorbing at least a portion of the organic material contained in said water on said adsorbent powder material, said process comprising at least: a first desorption step of most of the material organic material adsorbed on the used adsorbent powder material, said first desorption step resulting in obtaining a first aqueous phase containing at least partially regenerated adsorbent powder material and desorbed organic material; a first step of separation by decantation of most of the organic material desorbed from the remainder of the first aqueous phase containing the at least partially regenerated powdery adsorbent material, said first separation step leading to the production of a second aqueous phase containing the at least partially regenerated powdery adsorbent material; a first step of neutralizing said second aqueous phase containing the at least partially regenerated powdery adsorbent material; a second step of separating the at least partially regenerated adsorbent powder material from said second aqueous phase, said second separation step leading to the production of a third aqueous phase containing the at least partially regenerated adsorbent powder material.
    [2]
    2. Method according to claim 1, characterized in that said first desorption step comprises contacting said aqueous phase containing the usual adsorbent powder material with an alkalizing compound for bringing its pH to a pH of at least 9.
    [3]
    3. Method according to claim 1, characterized in that said first desorption step comprises contacting said aqueous phase containing the adsorbent powder material used with an acidifying compound to bring its pH to a maximum pH of 6.
    [4]
    4. Method according to claim 1, characterized in that it comprises at least: a second step of desorption of most of the residual organic material adsorbed on the partially regenerated powdery adsorbent material contained in said third aqueous phase, said second stage desorption method leading to the production of a fourth aqueous phase containing the at least partially regenerated adsorbent powder material. a third step of separating most of the residual organic material desorbed from the remainder of said fourth aqueous phase, said third separation step leading to the production of a fifth aqueous phase containing the at least partially regenerated adsorbent powder material; a second step of neutralizing said fifth aqueous phase containing the at least partially regenerated adsorbent powder material; a fourth step of separating the at least partially regenerated adsorbent powder material from the remainder of said fifth aqueous phase.
    [5]
    5. Method according to claim 4, characterized in that said first desorption step, respectively said second desorption step, comprises contacting said aqueous phase containing adsorbent powder material used, respectively said third aqueous phase, with an alkalizing compound allowing its pH to be brought to a pH of at least 9, and in that said second desorption stage, respectively said first desorption stage, consists of bringing into contact said third aqueous phase, respectively said aqueous phase containing pulverulent material adsorbent used, with an acidifying compound to bring its pH to a maximum pH of 6.
    [6]
    6. Method according to any one of claims 1 to 5, characterized in that said first or second desorption step comprises contacting said aqueous phase with an alkalizing compound to bring its pH to a pH of about 11 .
    [7]
    7. Method according to claim 6 characterized in that said alkalinizing compound is sodium hydroxide.
    [8]
    8. Process according to any one of claims 3 to 7, characterized in that said acidifying compound belongs to the group comprising: citric acid; sulfuric acid.
    [9]
    9. Method according to any one of claims 1 to 8 characterized in that said first neutralization step and said second separation step are carried out concomitantly during a settling step upstream of which the service water is provided in sufficient quantity to said second aqueous phase containing the adsorbent powder material at least partially regenerated.
    [10]
    10. Method according to any one of claims 1 to 8 characterized in that said first neutralization step and said second separation step are carried out concomitantly during a hydrocycloning step during which the water of service is provided as a washing fluid.
    [11]
    11. Method according to any one of claims 4 to 10 characterized in that said third separation step is a decantation step.
    [12]
    12. Method according to any one of claims 4 to 11 characterized in that said second step of neutralization and said fourth separation step are carried out concomitantly during a settling step upstream of which the water of service is provided in sufficient quantity to said fifth aqueous phase containing the at least partially regenerated powdery adsorbent material.
    [13]
    13. Method according to any one of claims 4 to 11 characterized in that said second neutralization step and said fourth separation step are carried out concomitantly during a hydrocycling step during which the water of service is provided as a washing fluid.
    [14]
    14. Installation for the implementation of a process for treating an aqueous phase containing an adsorbent powder material, such as powdered activated carbon, used from a purification or water purification plant using at least one step of injecting said adsorbent powder material into said water and at least one step of adsorbing at least a portion of the organic material contained in said water on an adsorbent powdery material according to any one of claims 1 characterized in that it comprises: first supply means in said aqueous phase containing adsorbent powder material used a desorbent compound leading to obtaining a first aqueous phase containing adsorbent powder material at least partially regenerated and desorbed organic matter; first separation means (2) of the bulk of the organic material desorbed from the remainder of the first aqueous phase containing the at least partially regenerated adsorbent powder material leading to the production of a second aqueous phase containing the adsorbent powder material at least partially regenerated, said first (2) separation means including a decanter; first feed means (11) for a compound for neutralizing said second aqueous phase containing the at least partially regenerated powdery adsorbent material; second means (6, 10) for separating the at least partially regenerated adsorbent powder material from the remainder of said second aqueous phase leading to the production of a third aqueous phase containing the at least partially regenerated adsorbent powder material.
    [15]
    15. Installation according to claim 14, characterized in that it comprises: second means for feeding into said third aqueous phase a desorbent compound leading to the production of a fourth aqueous phase containing adsorbent powder material at least partially regenerated and desorbed organic matter; third means for separating (2 ') most of the residual organic material desorbed from the remainder of the fourth aqueous phase containing the at least partially regenerated powdery adsorbent material leading to the production of a fifth aqueous phase containing the adsorbent powder material at least partially regenerated; second means (11 ') for supplying a compound for neutralizing said fifth aqueous phase containing the at least partially regenerated powdery adsorbent material; fourth means (6 ', 10') for separating the at least partially regenerated adsorbent powder material from the remainder of said fifth aqueous phase.
    [16]
    16. Installation according to any one of claims 14 and 15 characterized in that said third (2 ') separation means include a decanter.
    [17]
    17. Installation according to claim 15 or 16 characterized in that said first and / or second means for supplying a compound for neutralizing said second and / or said third aqueous phase containing the adsorbent powder material at least partially regenerated consist of by means (11) of éu d'epu.
    [18]
    18. Installation according to claim 15 or 16 characterized in that said second (6) separation means and / or said fourth (6 ') separation means include a decanter.
    [19]
    19. Installation according to claim 15 or 16 characterized in that said second (10) separation means and / or said fourth (10 ') separation means include a hydrocyclone.
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    AU2009251120B2|2014-10-09|
    US8092687B2|2012-01-10|
    FR2940647A1|2010-07-02|
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    CN101792194A|2010-08-04|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE1063121B|1956-06-25|1959-08-13|Shell Res Ltd|Continuous process for the regeneration of used filter aids|
    NL7203466A|1972-03-16|1973-09-18|
    DE2719529C2|1976-05-03|1990-11-15|Commonwealth Scientific And Industrial Research Organization, Campbell, Au|
    WO1998043738A1|1997-03-31|1998-10-08|Battelle Memorial Institute|Apparatus and method for ammonia removal from waste streams|
    DE10251792A1|2002-11-07|2004-05-19|Industriebetriebe Heinrich Meyer-Werke Breloh Gmbh & Co. Kg|Process for the regeneration of filter media, especially diatomaceous earth|
    FR2868064B1|2004-03-26|2007-01-26|Otv Sa|WATER TREATMENT PLANT COMPRISING A TANK FOR CONTACTING WATER WITH A PULVERULENT REAGENT AND A FLOCCULATING OR COAGULATING REAGENT, AND CORRESPONDING PROCESS|CN102580362B|2011-01-14|2014-05-28|北京化工大学|Process flow for separating acid-insoluble substances in nitric phosphate production by chemical flocculence method|
    DE102011006615A1|2011-03-31|2012-10-04|Dürr Systems GmbH|Plant for treating fluid with activated carbon comprises a device for introducing activated carbon in fluid, an activated carbon application area exhibiting cleaning effect and a cleaning device for separating activated carbon from fluid|
    US20150203364A1|2012-07-18|2015-07-23|Blue Water Technologies, Inc.|Integral media reconditioning and recovery system|
    CN110563198A|2019-09-04|2019-12-13|广西长润环境工程有限公司|Chemical fertilizer wastewater treatment method and treatment equipment|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    FR0859088|2008-12-26|
    FR0859088A|FR2940647B1|2008-12-26|2008-12-26|PROCESS AND PLANT FOR TREATING AN AQUEOUS PHASE CONTAINING USITE ADSORBENT MATERIAL|
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