CN214261916U - Resin fluidized bed system for water treatment - Google Patents
Resin fluidized bed system for water treatment Download PDFInfo
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- CN214261916U CN214261916U CN202022219956.4U CN202022219956U CN214261916U CN 214261916 U CN214261916 U CN 214261916U CN 202022219956 U CN202022219956 U CN 202022219956U CN 214261916 U CN214261916 U CN 214261916U
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Abstract
The utility model belongs to the technical field of resin for the water treatment, in particular to resin fluidized bed system for water treatment. The system comprises a resin fluidization working tank, a resin fluidization regeneration tank and a resin fluidization cleaning tank, wherein resin is sequentially transported in the three tanks to realize raw water purification, resin regeneration and cleaning, and water, regeneration liquid and cleaning water respectively enter from the bottoms of the three tanks to enable resin beds in the tanks to be in a fluidization state; and a resin outlet of the resin fluidization cleaning tank is connected with a resin inlet of the resin fluidization working tank and is used for recycling the cleaned resin to the resin fluidization working tank. The utility model discloses a resin fluidized bed system for water treatment adopts the resin fluidized bed design, makes the resin realize the fluidization completely, makes the resin carry out continuous transfer in proper order between three jar, realizes going on in succession of working processes such as resin bed operation, resin regeneration and resin washing, avoids the periodic shutdown of system, improve equipment work efficiency.
Description
Technical Field
The utility model belongs to the technical field of resin for the water treatment, in particular to resin fluidized bed system for water treatment.
Background
The ion exchange resin has wide application in the production process of chemical industry, medicine, biochemistry and the like, and can be used for removing salt impurities in mixed solution or separating partial organic impurities. In the advanced treatment of water supply, various waste water and biochemical tail water, ion exchange and adsorption resin is usually adopted to enrich and separate organic matters and inorganic matters in water so as to achieve the aims of decoloring, deodorizing, softening and removing trace organic matters and heavy metals from raw water and further meet the water supply standard or the waste water discharge standard.
However, after a period of use of the ion exchange resin, due to the ion exchange capacity or the adsorption of organic matter to saturation, shutdown for resin regeneration and cleaning is required. The regeneration of ion exchange resin is mainly directed to the process of introducing regeneration liquid into an ion exchange column filled with used ion exchange resin to restore the ion exchange capacity of the resin.
However, conventional ion exchange resin plants are typically single-unit plants, and the raw water treatment process (i.e., shutdown) cannot be performed during regeneration of the ion exchange resin. In the water treatment process, in order to reach the raw water purification standard, the water and the resin need to have sufficient contact time and a larger contact area, and if a common ion exchange resin device, namely fixed bed resin, is adopted, the resin layer needs to keep a certain height (namely more resin) because the resin is stacked (namely fixed), so that the exchange reaction can be fully performed when the water flows through the resin layer at a certain flow rate. The water treatment process has the problems of complex pretreatment process, large resin consumption, large equipment investment and high operating cost, monomer equipment is difficult to continuously operate, resin regeneration liquid is large in consumption, and the regeneration efficiency is low.
In the existing regeneration method of ion exchange resin, regeneration liquid and cleaning liquid are mainly added from the top of an ion exchange resin tower and pass through a resin bed layer from top to bottom. The ion exchange resin is added from top to bottom in normal use. Under the feeding mode, continuous downward acting force is generated on the resin bed layer due to flowing of the fluid, under the action of the force, the void ratio among the resin particles is smaller and smaller, and the resin bed layer is tighter and tighter, so that hardening and channeling phenomena are formed inside the resin bed layer, the fluid preferentially passes through the bed layer through the channeling gaps with smaller resistance, the contact time of the liquid and the resin particles is shortened, the contact is insufficient, and the action of a mass transfer process between the liquid and the resin particles is weakened. Therefore, the resin can be insufficiently cleaned by the salt impurities and the adsorbed organic impurities in the cleaning process, and the incomplete regeneration of the ion exchange resin can be easily caused in the subsequent regeneration process, so that the ion exchange resin bed layer needs to be frequently switched for regeneration, the investment of medicament consumption, energy consumption and environmental protection is increased, and the stability of the product quality is influenced.
Chinese patent application publication No. CN1329942A discloses a method for regenerating ion exchange resin, which comprises filling used ion exchange resin in a regeneration tower, and repeating the steps at least twice, wherein the steps comprise: the method can regenerate the ion exchange resin more uniformly by passing the aqueous regenerant solution downward through the regeneration tower from the top of the regeneration tower and then passing ultrapure water upward through the regeneration tower from the bottom of the regeneration tower. Chinese patent application publication No. CN101224436A discloses a method for regenerating an ion exchange resin by passing a desorption solution through an ion exchange column filled with an ion exchange resin to remove impurity ions adsorbed or firmly bound to the resin and passing a regenerated solution through the ion exchange column in a countercurrent manner to restore the ion exchange capacity of the ion exchange resin. The desorption solution and the regeneration solution are respectively introduced into the ion exchange column in a forward flow mode and a reverse flow mode. The method can improve the column efficiency of the ion exchange column.
However, in the two methods, the resin forms a fluidized bed only by adopting a counter-current adding mode in the step of adding ultrapure water or adding regenerated liquid, so that the mass transfer effect between the liquid and the resin in the fluidized bed is obviously improved, but the problem of low mass transfer efficiency still exists in the raw water treatment process. In addition, in the above regeneration method, when the ion exchange resin needs to be regenerated, the raw water treatment apparatus needs to be stopped, and then the ion exchange resin to be regenerated is transferred to the regeneration tower, so that the raw water treatment process cannot be continuously performed. The existing ion exchange resin equipment belongs to fixed bed resin, wherein the resin is in a stacking state and is continuously extruded in the operation process, and the problems of low tolerance to suspended solids in raw water, easy blockage, low treatment capacity and the like are solved; the existing fixed resin bed has requirements on the height of a resin working layer under a certain working condition, so that the resin exchange capacity at the bottom of the resin bed cannot be completely released, and the problems of large resin dosage, high regeneration frequency and large regenerated medicament consumption exist; in addition, in the operation period, the resin gradually tends to be saturated along with the continuous increase of the adsorption quantity of the resin, so that the quality of produced water is continuously reduced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a resin fluidized bed system for water treatment to improve the mass transfer efficiency of raw water treatment process and realize among the water treatment process resin work, regeneration, abluent serialization.
In order to achieve the above object, the present invention provides the following technical solutions:
a resin fluidized bed system for water treatment, which comprises a resin fluidization working tank, a resin fluidization regeneration tank and a resin fluidization cleaning tank; the resin fluidization working tank is used for water treatment, and water enters from the bottom of the resin fluidization working tank to enable a resin bed in the resin fluidization working tank to be in a fluidization state; the resin fluidization regeneration tank is connected with the resin fluidization working tank and is used for receiving and regenerating the dehydrated resin from the resin fluidization working tank, and the regeneration liquid for regenerating the resin enters from the bottom of the resin fluidization regeneration tank to ensure that the resin in the resin fluidization regeneration tank is in a fluidization state; the resin fluidization cleaning tank is connected with the resin fluidization regeneration tank and is used for receiving and cleaning the resin from the resin fluidization regeneration tank after the regeneration liquid is removed, and cleaning water for cleaning the resin enters from the bottom of the resin fluidization cleaning tank to enable the resin in the resin fluidization cleaning tank to be in a fluidization state; and a resin outlet of the resin fluidization cleaning tank is connected with a resin inlet of the resin fluidization working tank and is used for recycling the cleaned resin to the resin fluidization working tank.
Preferably, the top of the resin fluidization working tank is provided with a first resin inlet and a produced water outlet, and the bottom of the resin fluidization working tank is provided with a raw water inlet and a first fluidized bed resin outlet; the top of the resin fluidization regeneration tank is provided with a second resin inlet and a regeneration liquid outlet, and the bottom of the resin fluidization regeneration tank is provided with a regeneration liquid inlet and a second fluidized bed resin outlet; the top of the resin fluidization cleaning tank is provided with a third resin inlet and a cleaning water outlet, and the bottom of the resin fluidization cleaning tank is provided with a cleaning water inlet and a third fluidized bed resin outlet; the first fluidized bed resin outlet is connected with the second resin inlet through a first solid-liquid separator; and the resin outlet of the second fluidized bed is connected with the third resin inlet through a second solid-liquid separator, and the resin outlet of the third fluidized bed is connected with the first resin inlet through a fluid conveying device.
Preferably, the resin fluidization working tank, the resin fluidization regeneration tank and the resin fluidization cleaning tank are internally provided with a concave resin screen, the upper end of the cross section of the resin screen is large, and the lower end of the cross section of the resin screen is small, and the resin screen is respectively connected with the resin outlet of the first fluidized bed, the resin outlet of the second fluidized bed and the resin outlet of the third fluidized bed through pipelines.
Preferably, the first solid-liquid separator and the second solid-liquid separator are cyclone separators, a fluid conveying device is connected between the first fluidized bed resin outlet and the first solid-liquid separator, and a fluid conveying device is connected between the second fluidized bed resin outlet and the second solid-liquid separator.
Preferably, the fluid delivery device is a pump; preferably, the pump is a diaphragm feed pump.
Preferably, the system further comprises a regeneration liquid storage device, wherein the regeneration liquid outlet is connected with the regeneration liquid storage device to recycle the regeneration liquid in the resin fluidization regeneration tank to the regeneration liquid storage device.
Preferably, the liquid outlet of the first solid-liquid separator is connected to the wash water inlet.
Preferably, the liquid outlet of the second solid-liquid separator is connected with the regeneration liquid inlet; preferably, the liquid outlet of the second solid-liquid separator is connected to a regenerated liquid storage means to reflux the liquid from the second solid-liquid separator to the regenerated liquid storage means.
Preferably, one or two or three of the first resin inlet, the second resin inlet and the third resin inlet are connected with a resin distributor through a pipeline extending into the tank.
One or two or three of the raw water inlet, the regeneration liquid inlet and the cleaning water inlet are connected with a water distributor through pipelines extending into the tank.
Preferably, a check valve is provided on the conduit between the pump and the first resin inlet; preferably, the resin screen is conical, funnel-shaped or hemispherical.
Compared with the closest prior art, the utility model provides a technical scheme has following excellent effect:
the resin fluidized bed system for water treatment of the utility model adopts the design of the resin fluidized bed, so that the resin is completely fluidized, the resin is sequentially and continuously transferred among the resin fluidization working tank, the resin fluidization regeneration tank and the resin fluidization cleaning tank, the working processes of resin bed operation, resin regeneration, resin cleaning and the like are continuously carried out, the periodic shutdown of the system is avoided, and the working efficiency of the equipment is improved; in the resin fluidized bed system for water treatment, the resin forms fluidized operation, so that the utilization rate of the resin is greatly improved, and meanwhile, the resin can be regenerated and cleaned in time, and the water quality of produced water is ensured to be kept stable all the time in the operation process; in addition, the utility model does not need to be provided with a spare resin bed, and no resin is accumulated in the resin bed, thereby greatly reducing the resin consumption and saving the medicament consumption; in addition, for raw water with poor water quality (such as when suspended matters are more), the working pressure of the fixed bed can be increased rapidly (namely the resin fixed bed is blocked) by using the resin fixed bed for treatment, and the design of the resin fluidized bed greatly reduces the requirement on raw water inlet, reduces the resin cleaning frequency and cleaning water quantity, reduces the discharge of waste water, and has obvious economic and environmental benefits.
It will be understood that the flow of resin from the resin fluidization regeneration tank to the resin fluidization regeneration tank and the flow of resin from the resin fluidization regeneration tank to the resin fluidization purge tank can be achieved by the difference in head between the resin fluidization regeneration tank, the resin fluidization regeneration tank and the resin fluidization purge tank.
Preferably, a pumping device is adopted to realize the continuous transfer of the resin among the resin fluidization working tank, the resin fluidization regeneration tank and the resin fluidization cleaning tank, a cyclone separator is adopted to realize the solid-liquid separation of the resin and the liquid, and the cyclone separator has the advantages of simple and compact structure, no need of additional power, large treatment capacity and low operation cost. Because the cyclone separator temporarily retains the resin with slightly higher density in the separator by virtue of centrifugal force, and the liquid quickly passes through the separator under the action of pressure, so that solid-liquid separation is realized, therefore, the fluid entering the cyclone separator needs to have a certain flow velocity.
The preferred diaphragm self priming pump that adopts realizes the resin migration between working tank, regeneration tank and washing jar, and the diaphragm self priming pump has from inhaling the characteristics that the ability reinforce, the lift is high, and especially the diaphragm self priming pump does not have rotating member, and the trafficability characteristic is good, allows to pass through the biggest particle diameter and reaches 10 millimeters, and the fluid does not have the shear flow, and is little to the damage of transported substance, can avoid the resin fluidization in-process to the mechanical damage of resin greatly.
Drawings
The accompanying drawings, which form a part of the specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without unduly limiting the scope of the invention. Wherein:
FIG. 1 is a schematic structural view of a resin fluidized bed system for water treatment according to the present invention;
in fig. 1, 1: a raw water pump; 2: a resin fluidization working tank; 3: a raw water inlet; 4: a water distributor; 51. 52, 53: a resin screen; 6: a resin distributor; 71: a first resin inlet; 72: a second resin inlet; 73: a third resin inlet; 8: a water production outlet; 91: a first fluidized resin outlet; 92: a second fluidized resin outlet; 93: a third fluidized resin outlet; 101: a first solid-liquid separator; 102: a second solid-liquid separator; 11: a regenerated liquid storage device; 12: a regenerative liquid pump; 13: a regenerated liquid outlet; 14: a resin fluidization regeneration tank; 15: a resin cleaning delivery pump; 16: a check valve; 17: a wash water outlet; 18: a resin fluidization cleaning tank; 19: the resin returns to the transfer pump; 20: a resin regeneration transfer pump; 21: a regenerated liquid inlet; 22: a wash water inlet; a: raw water; b: producing water; c: and (5) cleaning the wastewater.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art all belong to the protection scope of the present invention.
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments. It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description of the present invention and do not require that the present invention must be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. The terms "connected" and "connected" used in the present invention should be understood in a broad sense, and may be, for example, either fixed or detachable; they may be directly connected or indirectly connected through intermediate components such as pipes, devices, etc., and the specific meanings of the above terms will be understood by those skilled in the art according to specific situations.
Referring to fig. 1, the present invention provides a resin fluidized bed system for water treatment, including a resin fluidization working tank 2 for raw water treatment, a resin fluidization regeneration tank 14 for regenerating resin, and a resin fluidization cleaning tank 18 for cleaning the regenerated resin, the three structures are similar, and all have a raw water inlet 3, a water distributor 4, a fluidized resin outlet and a resin screen (specifically, a first fluidized resin outlet 91 and a resin screen 51, a second fluidized resin outlet 92 and a resin screen 52, a third fluidized resin outlet 93 and a resin screen 53) located at the bottom of the tank. Raw water enters from the bottom of the resin fluidization working tank 2, so that a resin bed in the resin fluidization working tank 2 is in a fluidization state; a resin fluidization regeneration tank 14 connected with the resin fluidization working tank 2 and used for receiving and regenerating the dehydrated resin from the resin fluidization working tank 2, wherein a regeneration liquid for regenerating the resin enters from the bottom of the resin fluidization regeneration tank 14 to enable the resin in the resin fluidization regeneration tank 14 to be in a fluidized state; a resin fluidization cleaning tank 18 connected with the resin fluidization regeneration tank 14 and used for receiving and cleaning the resin from the resin fluidization regeneration tank 14 after the regeneration liquid is removed, and cleaning water for cleaning the resin enters from the bottom of the resin fluidization cleaning tank 18 to enable the resin in the resin fluidization cleaning tank 18 to be in a fluidization state; the resin outlet of the resin fluidization cleaning tank 18 is connected with the resin inlet of the resin fluidization working tank 2, and is used for recycling the cleaned resin to the resin fluidization working tank 2.
Specifically, the top of the resin fluidization working tank 2 is provided with a produced water outlet 8, the top of the resin fluidization regeneration tank 14 is provided with a regenerated liquid outlet 13, and the top of the resin fluidization cleaning tank 18 is provided with a cleaning water outlet 17. In the three tank devices, resin particles are injected into the tank from the top of the tank body and run from top to bottom, liquid is injected into the tank from the bottom of the tank body and flows from bottom to top, and the resin in the tank body is fluidized.
The resin screens 51, 52, 53 are installed at the lower parts of the resin fluidization operation tank 2, the resin fluidization regeneration tank 14, and the resin fluidization purge tank 18, and are connected to the first fluidized resin outlet 91, the second fluidized resin outlet 92, and the third fluidized resin outlet 93, respectively, through pipes. The resin screens 51, 52, 53 can be any shape convenient for resin collection, such as a cone, funnel or hemisphere, in the embodiment of the present invention, the resin screens 51, 52, 53 are tapered, and when the resin in a fluidized state falls into the tapered resin screens, it sinks down along the tapered slope under the action of gravity, and flows to the fluidized resin outlet through the pipe, and is transferred under the action of the resin regeneration delivery pump 20, the resin cleaning delivery pump 15 and the resin return delivery pump 19 having suction force, respectively, and the liquid flowing from bottom to top can freely pass through the tapered resin screens without obstruction. Preferably, the resin regeneration transfer pump 20, the resin purge transfer pump 15, and the resin return transfer pump 19 use diaphragm self-priming pumps.
The first solid-liquid separator 101 and the second solid-liquid separator 102 are used for solid-liquid separation of fluidized resin, in this embodiment, a cyclone separator is specifically selected, fluidized resin enters the cyclone separator from a tangential inlet of the cyclone separator under the pressure of a delivery pump, and performs accelerated spiral flow in a conical space inside the cyclone separator to generate centrifugal force, a liquid phase part is discharged from a top outlet of the cyclone separator, and resin particles are discharged from a bottom resin discharge port of the cyclone separator.
The first solid-liquid separator 101 and the second solid-liquid separator 102 are respectively arranged at the top of the resin fluidization regeneration tank 14 and the top of the resin fluidization cleaning tank 18, the resin discharge outlet at the bottom of the first solid-liquid separator 101 is communicated with the second resin inlet 72, and the liquid outlet of the first solid-liquid separator 101 is communicated with the cleaning water inlet 22; the bottom resin discharge port of the second solid-liquid separator 102 is communicated with the third resin inlet 73, the liquid outlet of the second solid-liquid separator 102 is communicated with the regenerated liquid inlet 21, and the resin particles separated by the solid-liquid separator enter the corresponding tank body through the second resin inlet 72 and the third resin inlet 73.
The resin return feed pump 19 is connected to the first resin inlet 71 of the resin fluidization operation tank 2 through a pipe, and a check valve 16 is installed in the pipe to prevent the produced water from being reversely mixed into the resin return feed pump 19 through the pipe.
The utility model discloses a resin fluidized bed system for water treatment will be used for resin fluidization working tank 2 of raw water treatment, a resin fluidization regeneration tank 14 for regenerated resin, and be used for wasing the resin fluidization washing jar 18 of regenerated back resin and pass through the pipe connection, form circulation circuit, when realizing efficient raw water treatment, carry out the regeneration and the washing of resin in step, adopt resin fluidized bed design promptly, make resin bed operation, regeneration and washing go on in succession, avoid the periodic shutdown of system, improve equipment work efficiency.
The utility model discloses a resin fluidized bed system for water treatment is as follows to the concrete step when raw water treatment:
(1) raw water A enters from a raw water inlet 3 at the bottom of a resin fluidization working tank 2 through the lifting action of a raw water pump 1 arranged on a water inlet pipeline, the raw water uniformly flows from bottom to top through the water distribution action of a water distributor 4 and is subjected to ion exchange reaction with resin in a fluidized state in a tank body, and produced water B is discharged from a produced water outlet 8 at the top of the resin fluidization working tank 2 through a produced water pipeline;
(2) the first resin inlet 71 is connected with the resin return conveying pump 19 through a pipeline, regenerated and cleaned fresh resin returns to the resin fluidization working tank 2, a resin distributor 6 is arranged in the resin fluidization working tank 2 and is connected with the first resin inlet 71 through a pipeline, and the returned fresh resin is uniformly dropped under the action of gravity through the distribution action of the resin distributor 6 and is subjected to ion exchange reaction with raw water flowing from bottom to top in the step (1);
(3) the conical resin screen installed at the bottom of the resin fluidization working tank 2 is connected with the first fluidized resin outlet 91 through a pipeline, and the resin which completes the ion exchange reaction is intercepted by the screen, sinks along the conical slope under the action of gravity, passes through the first fluidized resin outlet 91, and enters the first solid-liquid separator 101 under the action of the resin regeneration conveying pump 20 with suction force;
(4) the fluidized resin which completes the ion exchange reaction in the step (3) and a small amount of produced water are separated in the first solid-liquid separator 101, the produced water is discharged from an outlet at the top of the first solid-liquid separator 101, and the resin particles are discharged from a resin discharge outlet at the bottom of the first solid-liquid separator 101;
(5) the bottom resin discharge port of the first solid-liquid separator 101 is communicated with the second resin inlet 72 of the resin fluidization regeneration tank 14, the resin separated in the step (4) falls into the resin fluidization regeneration tank 14 from top to bottom under the action of pressure and resin gravity, and is regenerated under the action of the regenerated liquid flowing from bottom to top, falls into a conical resin screen and is intercepted, sinks along a conical slope under the action of gravity, passes through a fluidized resin outlet, and enters the second solid-liquid separator 102 under the action of a resin cleaning and conveying pump 15 with suction force;
(6) the regeneration liquid in the step (5) is stored in the regeneration liquid storage device 11, enters from a regeneration liquid inlet 21 at the bottom of the resin fluidization regeneration tank 14 under the action of a regeneration liquid pump 12, flows from bottom to top, is discharged from a regeneration liquid outlet 13 and returns to the regeneration liquid storage device 11 for recycling;
(7) the fluidized resin which enters the second solid-liquid separator 102 in the step (5) and is subjected to regeneration and a small amount of regenerated liquid are separated in the second solid-liquid separator 102, the regenerated liquid is discharged from an outlet at the top of the cyclone separator and returns to the regenerated liquid storage device 11 for recycling, and resin particles are discharged from a resin discharge outlet at the bottom;
(8) the produced water separated in the step (4) is continuously used as resin cleaning water, enters from a cleaning water inlet 22 at the bottom of a resin fluidization cleaning tank 18 and flows from bottom to top, and cleaning wastewater C is discharged from a cleaning water outlet 17;
(9) the bottom resin discharge port of the second solid-liquid separator 102 is communicated with the third resin inlet 73 of the resin fluidization cleaning tank 18, the resin which is separated and regenerated in the step (7) falls into the resin fluidization cleaning tank 18 from top to bottom under the action of pressure and gravity, and the resin is washed away from the residual regenerated liquid of the resin under the action of the cleaning water flowing from bottom to top in the step (8), so that the resin cleaning process is completed;
(10) and (4) the resin which finishes the cleaning process in the step (9) falls into the conical resin screen mesh and is intercepted, sinks along the conical slope under the action of gravity, passes through the fluidized resin outlet, returns to the resin fluidization working tank 2 under the action of the resin return conveying pump 19 with suction force, continues to perform ion exchange reaction, and realizes continuous cycle work.
The embodiment of the present invention provides a regenerative liquid storage device 11 which is a regenerative liquid medicine box, and other common liquid storage devices such as a regenerative liquid medicine tank may be provided in other embodiments.
The utility model discloses a resin fluidized bed system for water treatment is when operation, and the discharge of resin in each jar equipment is gone on continuously, can understand, all reaches the fluidization state for the resin that makes in the three jar equipment to satisfy regeneration and abluent requirement, need control the business turn over of resin in each jar equipment, go out the velocity of flow.
For the regeneration liquid, the usual reagents for ion exchange in the existing regeneration process, such as acid, base or salt solutions, can be used.
In other embodiments, a pumping device may be provided to increase the velocity of the wash water prior to entering the resin fluidization wash tank 18 to increase the mass transfer efficiency of the wash process.
In other embodiments, the resin fluidization regeneration tank 14 and the resin fluidization rinse tank 18 may also be internally equipped with a resin distributor and communicate with the resin inlet via piping.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A resin fluidized bed system for water treatment, characterized in that the system comprises a resin fluidization working tank (2), a resin fluidization regeneration tank (14) and a resin fluidization cleaning tank (18);
the resin fluidization working tank (2) is used for water treatment, and water enters from the bottom of the resin fluidization working tank (2);
the resin fluidization regeneration tank (14) is connected with the resin fluidization working tank (2) and is used for receiving and regenerating the dehydrated resin from the resin fluidization working tank (2), and regeneration liquid for regenerating the resin enters from the bottom of the resin fluidization regeneration tank (14);
the resin fluidization cleaning tank (18) is connected with the resin fluidization regeneration tank (14) and is used for receiving and cleaning the resin from the resin fluidization regeneration tank (14) after regeneration liquid is removed, and cleaning water for cleaning the resin enters from the bottom of the resin fluidization cleaning tank (18);
a resin outlet of the resin fluidization cleaning tank (18) is connected with a resin inlet of the resin fluidization working tank (2) and is used for recycling the cleaned resin to the resin fluidization working tank (2);
the resin fluidization working tank (2), the resin fluidization regeneration tank (14) and the resin fluidization cleaning tank (18) are connected through pipelines to form a circulation loop, and resin regeneration and cleaning are synchronously performed while water treatment is realized.
2. The resin fluidized bed system for water treatment according to claim 1, wherein the resin fluidized working tank (2) is provided with a first resin inlet (71) and a produced water outlet (8) at the top and a raw water inlet (3) and a first fluidized bed resin outlet (91) at the bottom;
the top of the resin fluidization regeneration tank (14) is provided with a second resin inlet (72) and a regeneration liquid outlet (13), and the bottom of the resin fluidization regeneration tank is provided with a regeneration liquid inlet (21) and a second fluidized bed resin outlet (92);
the top of the resin fluidization cleaning tank (18) is provided with a third resin inlet (73) and a cleaning water outlet (17), and the bottom of the resin fluidization cleaning tank is provided with a cleaning water inlet (22) and a third fluidized bed resin outlet (93);
the first fluidized bed resin outlet (91) is connected with the second resin inlet (72) through a first solid-liquid separator (101); the second fluidized bed resin outlet (92) is connected with the third resin inlet (73) through a second solid-liquid separator (102), and the third fluidized bed resin outlet (93) is connected with the first resin inlet (71) through a fluid conveying device;
the resin fluidization working tank (2), the resin fluidization regeneration tank (14) and the resin fluidization cleaning tank (18) are internally provided with concave resin screens (51, 52 and 53), the upper ends and the lower ends of the cross sections of the resin screens (51, 52 and 53) are large, and the resin screens (51, 52 and 53) are respectively connected with a first fluidized bed resin outlet (91), a second fluidized bed resin outlet (92) and a third fluidized bed resin outlet (93) through pipelines.
3. A resin fluidized bed system for water treatment according to claim 2, wherein the first solid-liquid separator (101) and the second solid-liquid separator (102) are cyclone separators, and a fluid conveying device is connected between the first fluidized bed resin outlet (91) and the first solid-liquid separator (101), and a fluid conveying device is connected between the second fluidized bed resin outlet (92) and the second solid-liquid separator (102).
4. A resin fluidized bed system for water treatment as claimed in claim 3, wherein the fluid delivery device is a pump; the pump is a diaphragm delivery pump.
5. A resin fluidized bed system for water treatment according to claim 4, characterized in that the system further comprises a regeneration liquid storage means (11), wherein the regeneration liquid outlet (13) is connected with the regeneration liquid storage means (11) to recover the regeneration liquid in the resin fluidized regeneration tank (14) into the regeneration liquid storage means (11).
6. A resin fluidized bed system for water treatment according to claim 4, wherein the liquid outlet of the first solid-liquid separator (101) is connected to a washing water inlet (22).
7. A resin fluidized bed system for water treatment according to claim 4, wherein a liquid outlet of the second solid-liquid separator (102) is connected to a regeneration liquid inlet (21); the liquid outlet of the second solid-liquid separator (102) is connected to the regenerated liquid storage means (11) to return the liquid from the second solid-liquid separator (102) to the regenerated liquid storage means (11).
8. A resin fluidized bed system for water treatment according to any one of claims 2-7, characterized in that one or two or three of the first resin inlet (71), the second resin inlet (72), the third resin inlet (73) are connected with a resin distributor (6) through a pipe extending into the tank.
9. The resin fluidized bed system for water treatment according to any one of claims 2 to 7, wherein one or two or three of the raw water inlet (3), the regeneration liquid inlet (21), and the washing water inlet (22) are connected with a water distributor (4) through a pipe extending into the tank.
10. A resin fluidized bed system for water treatment as claimed in any one of claims 4 to 7, wherein a check valve (16) is provided on the conduit between the pump (19) and the first resin inlet (71); the resin screen is conical, funnel-shaped or hemispherical.
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| CN202022219956.4U CN214261916U (en) | 2020-09-29 | 2020-09-29 | Resin fluidized bed system for water treatment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112264112A (en) * | 2020-09-29 | 2021-01-26 | 中信建设有限责任公司 | Resin fluidized bed system for water treatment |
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2020
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112264112A (en) * | 2020-09-29 | 2021-01-26 | 中信建设有限责任公司 | Resin fluidized bed system for water treatment |
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