CN112047496B - Ion exchange system for softened water and deionization method - Google Patents
Ion exchange system for softened water and deionization method Download PDFInfo
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- CN112047496B CN112047496B CN202010918765.9A CN202010918765A CN112047496B CN 112047496 B CN112047496 B CN 112047496B CN 202010918765 A CN202010918765 A CN 202010918765A CN 112047496 B CN112047496 B CN 112047496B
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
- C02F2001/427—Treatment of water, waste water, or sewage by ion-exchange using mixed beds
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
- Y02A20/131—Reverse-osmosis
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Abstract
The invention relates to an ion exchange system for softened water, which can deionize incoming water and comprises at least two mixed beds, wherein the at least two mixed beds can realize the switching of operation modes through a switching accessory, the operation modes at least comprise a series operation mode and a parallel operation mode, the switching accessory is in communication connection with a control component, and the control component can determine whether the switching accessory acts or not to switch the current operation mode of the at least two mixed beds to another operation mode according to at least one water production characteristic parameter of the mixed beds for at least a period of time and a corresponding incoming water characteristic parameter.
Description
Technical Field
The invention relates to the technical field of water purification systems, in particular to an ion exchange system for softened water.
Background
In chemical (or sewage treatment) enterprises, a common desalted water preparation process is a reverse osmosis membrane system and an ion exchange system. The water source for preparing the desalted water comprises surface water, underground water, seawater desalted water or sewage treatment reuse water and the like. After raw water with different water qualities is subjected to reverse osmosis treatment, the types and the concentrations of ions contained in the water entering the mixed bed are different, some raw water can reach the water quality standard only by single-stage mixed bed treatment, and some raw water can reach the water quality standard only by two-stage or more-stage mixed beds in series connection. Many chemical enterprises usually adopt a plurality of water sources to simultaneously desalt and fetch water due to the restriction of the water sources and the water saving requirement, so that two or more stages of mixed beds are adopted to be used in series, but the problems often occur in the using process: compared with a second-stage mixed ion exchanger, the first-stage mixed ion exchanger has the advantages that the workload is large, the regeneration period is short, so that the ion exchange system can be stopped frequently for regeneration, the treatment capacity of the system is reduced, and impact is caused to other water treatment systems.
The reverse osmosis system series-parallel mixed bed device disclosed in the publication number CN201777922U can solve the problems. The mixed bed device comprises a mixed bed A and a mixed bed B, wherein the tops of the two mixed beds are respectively communicated with water inlet pipelines connected in parallel, and a water inlet valve I of the mixed bed A and a water inlet valve I of the mixed bed B are respectively arranged on the water inlet pipelines of the two mixed beds; the bottoms of the mixed bed A and the mixed bed B are communicated with water production pipelines which are connected in parallel, and a mixed bed A water production valve I and a mixed bed B water production valve I are respectively arranged on the water production pipelines of the mixed bed A and the mixed bed B; the water inlet pipeline and the water production pipeline of the mixed bed A and the mixed bed B are connected through a pipeline I, a water inlet valve II of the mixed bed A and a water production valve II of the mixed bed A are arranged on the pipeline I connected between the water inlet pipeline and the water production pipeline of the mixed bed A, and a water inlet valve II of the mixed bed B and a water production valve II of the mixed bed B are arranged on the pipeline I connected between the water inlet pipeline and the water production pipeline of the mixed bed B; the pipeline I between the water inlet valve II of the mixed bed A and the water producing valve II of the mixed bed A is communicated with the pipeline I between the water inlet valve II of the mixed bed B and the water producing valve II of the mixed bed B through the pipeline II. Through the combination of all the valves, three operation modes can be realized, namely A/B (water produced by the mixed bed A device enters the mixed bed B device, namely the operation modes of the mixed bed A and the mixed bed B are in series operation), B/A (water produced by the mixed bed B device enters the mixed bed A device, namely the operation modes of the mixed bed A and the mixed bed B are in series operation), and A U B (total inlet water respectively enters the mixed bed A device and the mixed bed B device, namely the operation modes of the mixed bed A and the mixed bed B are in parallel operation).
The ion exchange system always has a regeneration period which is always closely related to the quality and quantity of the incoming water. The quality and quantity of the incoming water are varied. However, there are always technical problems in the prior art when the series-parallel relationship of mixed bed a and mixed bed B switches and when the regeneration period of the ion exchange system is determined. For example, the switching time of the mixed bed a and the mixed bed B is too early, which easily causes the workload of the mixed bed B to increase; if the ion exchange system is regenerated in advance, the cost is increased.
Furthermore, on the one hand, due to the differences in understanding to the person skilled in the art; on the other hand, since the inventor has studied a lot of documents and patents when making the present invention, but the space is not limited to the details and contents listed in the above, however, the present invention is by no means free of the features of the prior art, but the present invention has been provided with all the features of the prior art, and the applicant reserves the right to increase the related prior art in the background.
Disclosure of Invention
In view of the shortcomings of the prior art, the present invention provides an ion exchange system for softening water, capable of deionizing incoming water, comprising at least two mixed beds, wherein the at least two mixed beds can realize the switching of operation modes through a switching accessory, the operation modes at least comprise a series operation mode and a parallel operation mode, the switching accessory is communicatively connected to a control component, and the control component can determine whether the switching accessory acts to switch the current operation mode of the at least two mixed beds to another operation mode in a manner of referring to the corresponding incoming water characteristic parameter based on at least one mixed bed water production characteristic parameter for at least a period of time. The invention adopts less electronic equipment, only needs to monitor the produced water and the incoming water, indirectly judges the ion exchange capacity by adopting a mode of referring the characteristic parameters of the produced water to the corresponding characteristic parameters of the incoming water, and switches the operation mode through the judgment result, thereby reducing the interference of artificial subjective factors, fully playing the treatment potential of the mixed bed, prolonging the regeneration period of the mixed bed, reducing the regeneration times and increasing the water treatment efficiency. After the treatment sequence of the mixed bed incoming water is changed, the ion exchange capacity can be obviously increased.
According to a preferred embodiment, in the case of an incoming water quantity less than a set threshold value, the at least two mixed beds are connected in series with one another to a downstream water treatment unit, at which point the control module is communicatively connected at least to a first water production data acquisition device of a communication conduit provided between the two mixed beds, so that the control module can change the treatment sequence of the incoming water of the at least two mixed bed pairs by means of the switching appendage in such a way that the at least two mixed beds can still be operated in series with one another, on the basis of at least one water production characteristic parameter of a preceding mixed bed.
According to a preferred embodiment, in the case where the quantity of the incoming water is greater than a set threshold value, the at least two mixed beds are communicated in parallel with each other to the downstream water treatment unit.
According to a preferred embodiment, a buffer tank is arranged between the at least two mixed beds, so that in case the control unit switches the operation mode to the regeneration mode based on the switching unit, at least one of the mixed beds can discharge its produced water to the buffer tank in an independent operation.
According to a preferred embodiment, the regeneration mode is determined as follows: s1: a second water production data acquisition device is arranged on a communication pipeline between the at least two mixed beds and the downstream water treatment unit; s2: the control assembly is in communication connection with the second water production data acquisition device; s3: the control component determines whether to regenerate based on the water production characteristic parameters collected by the second water production data collection device during at least a period of time; or the control component determines whether to regenerate or not based on the mode that the water production characteristic parameters collected by the second water production data collection device refer to the corresponding water incoming characteristic parameters.
According to a preferred embodiment, the control component is capable of adjusting the at least one period of time by the deep learning unit in accordance with at least one mixed bed water production characteristic parameter, which comprises at least one of PH value and conductivity.
According to a preferred embodiment, a water inlet valve I of a mixed bed A and a water inlet valve I of a mixed bed B are respectively arranged on water inlet pipelines of at least two mixed beds; the bottom parts of the mixed bed A and the mixed bed B are communicated with water production pipelines connected in parallel, and the water production pipelines of the mixed bed A and the mixed bed B are respectively provided with a mixed bed A water production valve I and a mixed bed B water production valve I; the water inlet pipeline and the water production pipeline of the mixed bed A and the mixed bed B are connected through a pipeline I, a water inlet valve II of the mixed bed A and a water production valve II of the mixed bed A are arranged on the pipeline I connected between the water inlet pipeline and the water production pipeline of the mixed bed A, and a water inlet valve II of the mixed bed B and a water production valve II of the mixed bed B are arranged on the pipeline I connected between the water inlet pipeline and the water production pipeline of the mixed bed B; the pipeline I between the water inlet valve II of the mixed bed A and the water producing valve II of the mixed bed A is communicated with the pipeline I between the water inlet valve II of the mixed bed B and the water producing valve II of the mixed bed B through the pipeline II.
According to a preferred embodiment, the present invention also provides a deionization method for a deionization system comprising at least two mixed beds, said method comprising at least: the at least two mixed beds can realize series operation or parallel operation through a switching accessory, the switching accessory is connected to a control component in a communication mode, and the control component can determine whether the switching accessory acts to change the operation mode of the at least two mixed beds according to the mode of respectively referring to the water quality and/or the water quantity of the incoming water based on the water quality and/or the water quantity of the mixed beds for at least a period of time.
According to a preferred embodiment, in the method, in the case of an incoming water quantity less than a set threshold value, the at least two mixed beds are connected in series with one another to a downstream water treatment unit, at which point the control module is communicatively connected at least to a first water production data acquisition device of a communication conduit provided between the two mixed beds, so that the control module can change the treatment sequence of the incoming water of the at least two mixed bed pairs by means of the switching attachment at least on the basis of the quality of the produced water of the preceding mixed bed in such a way that the at least two mixed beds can still be operated in series with one another.
According to a preferred embodiment, the invention also provides a series-connected ion exchange system, at least capable of deionizing incoming water, comprising at least two mixed beds, which can be operated in series or in parallel by means of a switching attachment, which is communicatively connected to a control assembly, which is capable of determining whether the at least two mixed beds are regenerated in a manner that the quality and/or quantity of the produced water of the mixed beds are respectively referenced to the quality and/or quantity of the incoming water based on the quality and/or quantity of the produced water of the mixed beds for at least a period of time; wherein the mixed bed comprises a uniform distributor to enable the incoming water to pass through the anion bed and/or the cation bed substantially uniformly.
Drawings
FIG. 1 is a block schematic diagram of an ion exchange system provided by the present invention;
FIG. 2 is a schematic diagram of a first series operation of an ion exchange system provided in accordance with the present invention;
FIG. 3 is a schematic diagram of a second series operation of an ion exchange system provided by the present invention;
FIG. 4 is a schematic diagram of the parallel operation of an ion exchange system provided by the present invention;
FIG. 5 is a schematic illustration of the regeneration operation of an ion exchange system provided by the present invention;
FIG. 6 is an ion exchanger according to the present invention;
FIG. 7 is a schematic view of an equispaced nozzle for an ion exchanger according to the present invention.
List of reference numerals
100: mixed bed 100 c: bed for male
200: switching accessory 100 d: fixing plate
300: control assembly 100 a-1: uniform distribution nozzle
400: downstream water treatment units 100a-1 a: water distribution water chamber
100 a: equipartition device 100a-1 b: throttling gallbladder chamber
100 b: bed for vagina
Detailed Description
This is described in detail below with reference to figures 1-7.
Mixed bed, i.e. mixed bed ion exchangers. The anion and cation exchange resins are put in the same exchanger according to a certain proportion and are uniformly mixed according to a certain proportion before operation, and the anion and cation exchange reactions are almost simultaneously carried out, so that the anion and cation exchange resin multi-stage multi-bed can be regarded as countless anion and cation exchange resin arrangement multi-stage multi-bed. The negative and positive ions contained in the water pass through the exchanger, and the hydrogen ions generated by H-type exchange and the hydroxyl ions generated by OH-type exchange are combined with each other, so that the exchange reaction is relatively thorough, and the purposes of deionizing, desalting water or softening water are achieved. The mixed bed comprises a yin bed and a yang bed. The vulva bed is generally placed at the lower part of the yang bed. The male bed can also be arranged at the lower part of the female bed according to the actual water quality condition.
And (4) mixed bed exchange, namely changing the water inlet sequence of two mutually communicated mixed beds through switching accessories such as valves, pipelines and the like. For example, reference may be made to the technical means referred to in the background art: the water produced by the mixed bed A device enters the mixed bed B device, namely the mixed bed A and the mixed bed B operate in series; through the switching of the valve, the water produced by the mixed bed B device enters the mixed bed A device, namely the mixed bed A and the mixed bed B operate in a series mode; through the switching of the valve, the total inlet water respectively enters the mixed bed A device and the mixed bed B device, and the operation modes of the mixed bed A and the mixed bed B are parallel operation. For example, a water inlet valve I of a mixed bed A and a water inlet valve I of a mixed bed B are respectively arranged on water inlet pipelines of at least two mixed beds. The bottoms of the mixing bed A and the mixing bed B are communicated with water production pipelines connected in parallel. The water production pipeline of the mixed bed A and the water production pipeline of the mixed bed B are respectively provided with a mixed bed A water production valve I and a mixed bed B water production valve I. The water inlet pipeline and the water production pipeline of the mixed bed A and the mixed bed B are connected through a pipeline I. A water inlet valve II of the mixed bed A and a water producing valve II of the mixed bed A are arranged on a pipeline I connected between a water inlet pipeline and a water producing pipeline of the mixed bed A. A water inlet valve II of the mixed bed B and a water producing valve II of the mixed bed B are arranged on a pipeline I connected between a water inlet pipeline and a water producing pipeline of the mixed bed B. The pipeline I between the water inlet valve II of the mixed bed A and the water producing valve II of the mixed bed A is communicated with the pipeline I between the water inlet valve II of the mixed bed B and the water producing valve II of the mixed bed B through the pipeline II. For this reason, the deionized water system of the present invention can realize a series operation mode or a parallel operation mode between the mixed beds. The valve may be a valve having a communication function and capable of automatically closing or opening, such as a solenoid valve. Since the mixed bed a and the mixed bed B are both substantially equivalent in structure and function, the mixed bed a and the mixed bed B of the present invention are all designated by reference numeral 100 and are not distinguished in detail. Those skilled in the art can implement or understand this as follows: the left side 100 in fig. 1-5 may refer to mixing bed a, while the right side 100 in fig. 1-5 may refer to mixing bed B.
Example 1
The present embodiment provides an ion exchange system for softened water comprising at least two mixing beds 100, a switching attachment 200, a control assembly 300, and a collection device. The switching accessory 200 is communicatively connected to the control component 300. Switching accessory 200 and control component 300 may be connected via wireless communication (e.g., Wifi, 5G, 4G, etc. communication protocols) or via data fiber.
The acquisition device is mainly used for acquiring data of the incoming water, the intermediate water and the tail end water. The incoming water refers to the water to be treated before entering the mixed bed 100. The intermediate produced water is produced water after at least one mixed bed treatment. End product water refers to product water that is to enter the downstream water treatment unit, i.e., product water that exits the exchange system. The data collected by the collection device is sent to the control assembly 300. The control component 300 extracts the incoming water characteristic parameters and the produced water characteristic parameters based on the data. Data include water volume, PH (PH), conductivity, salinity, turbidity. The water input characteristic parameter and the water production characteristic parameter are calculated at least for a period of time, such as an average value at least for a period of time, a variance at least for a period of time, a peak value at least for a period of time, and the like. The control module 300 references the water production characteristic parameter to the corresponding water incoming characteristic parameter to determine the ion exchange capacity of the mixed bed. Currently, ion exchange capacity is generally judged by visual inspection through a window, observation time varies from person to person and can only be judged from a qualitative angle, and judgment errors are easy: on one hand, when the ion exchange capacity is stronger, the operation mode is switched or adjusted to the regeneration mode, so that the processing potential of the mixed bed is reduced; on the other hand, when the ion exchange capacity is weak, the operation mode is not switched or regeneration is not carried out, so that the quality of produced water is not high. The invention adopts less electronic equipment, only needs to monitor the produced water and the incoming water, indirectly judges the ion exchange capacity by adopting a mode that the characteristic parameters of the produced water refer to the corresponding characteristic parameters of the incoming water, and switches the operation mode through the judgment result, thereby reducing the interference of artificial subjective factors, fully exerting the treatment potential of the mixed bed, prolonging the regeneration period of the mixed bed, reducing the regeneration times and increasing the water treatment efficiency.
Take the example of the mixed bed A and the mixed bed B (the produced water of the mixed bed A is discharged into the mixed bed B) being connected in series to treat the incoming water. The control assembly 300 is at least communicatively connected to a first produced water data acquisition device of the communication conduit provided between the two mixed beds 100 (mixed bed a and mixed bed B). The first water production data acquisition device is used for acquiring data of intermediate water production. The control assembly 300 is capable of changing the treatment sequence of incoming water by the at least two mixed beds 100 through the switching attachment 200 in such a way that the at least two mixed beds 100 are still capable of operating in series with each other based on at least one water production characteristic of the preceding mixed bed with reference to its corresponding incoming water characteristic. The average conductivity of the incoming water is a over a period of time, the water production (intermediate water production) of the mixed bed AThe average conductivity is B and the average conductivity of the water produced by the mixed bed B (end water production) is c. The characteristic parameter of the intermediate product water has a relative change value mu in comparison with the conductivity of the incoming water 0 | (b-a)/a | (100%). The relative change value of the characteristic parameter of the terminal water production compared to the conductivity of the incoming water is mu 1 | (c-a)/a | (100%). In the extreme case, if μ 0 Approaches 0, mu 1 Approaching 100%, this indicates that the ion exchange capacity of the mixed bed A is almost completely lost, while the ion exchange capacity of the mixed bed B is almost completely lost, which is a condition to be avoided. Therefore, the inventors of the present invention have found, through long-term engineering, that μ 0 In the case of not less than 40% (in special cases, for example, the quality of the incoming water may be not less than 30% in a certain period of time), the ion exchange period can be prolonged by changing the order of treating the incoming water between the mixed beds: that is, the mixed bed at the front stage is changed in the order of treating the incoming water by the mixed bed under the condition that the mixed bed at the front stage has more than or equal to 40% (or 30%) of the ion exchange capacity, so that the only 40% of the ion exchange capacity is used for the ion exchange at the rear stage (for example, the mixed bed A flows to the mixed bed B, and the mixed bed B flows to the mixed bed A). After the sequence of the mixed bed pair water changes, mu 0 Will increase to more than 70%, mu 1 Will increase to more than 90%.
How to regenerate is an important mitigation affecting the entire water treatment system. Preferably, the regeneration mode is determined as follows:
s1: and a second water production data acquisition device is arranged on the communication pipeline between the at least two mixed beds 100 and the downstream water treatment unit 400 and is used for acquiring data of water produced at the tail end.
S2: the control assembly 300 is in communication with a second produced water data acquisition device.
S3: confirmation of the first regeneration mode: at least for a period of time, the control module 300 determines whether to regenerate (if the value c is higher, it means that the ion exchange capacity is weaker, and regeneration is possible, but this may be caused by the higher value a of the incoming water itself, which has limitations) based on the characteristic parameters of the produced water collected by the second produced water data collection device; or, confirmation of the second regeneration mode: the control assembly 300 collects data based on the second produced waterThe water production characteristic parameters collected by the collection device determine whether to regenerate or not by referring to the corresponding incoming water characteristic parameters. When mu is 1 Approaching 0%, this indicates that the ion exchange capacity of the entire ion exchange system has been completely lost and regeneration is required, whereby μ 1 And also sets corresponding threshold values to prevent the whole set of ion exchange system from losing the ion exchange capacity. The threshold value is typically set to 20% (in special cases, for example, the quality of the incoming water may be 10%, 8% or 5% when it is good for a period of time), and the whole ion exchange system needs to be regenerated while 20% (or 10%, 8% or 5%) of the incoming water is retained. Namely: the control assembly 300 is capable of determining whether at least two mixed beds 100 are regenerated in a manner that the quality of produced water from the mixed beds based on at least a period of time is respectively referred to the quality of the incoming water.
Preferably, the variation of the amount of incoming water is another technical challenge faced by mixed bed systems. In general, mixed bed systems are designed to handle water volumes theoretically in accordance with a mixed bed series mode of operation. However, due to the pressure of the upstream discharged sewage, the amount of the incoming water may be higher than the theoretical treated water amount (set threshold), and the mixed bed a and the mixed bed B need to be treated in parallel to cope with the change of the water amount, while the quality of the produced water may not be considered temporarily, and the produced water may be discharged to the temporary storage tank (or the downstream water treatment unit 400). When the amount of the incoming water is lower than the theoretical treatment water amount, the produced water in the temporary storage tank is blended into the incoming water for treatment. Preferably, in the case where the amount of the inflow water is less than the set threshold value, at least two mixed beds 100 are communicated to the downstream water treatment unit 400 in series with each other.
Preferably, a buffer tank is disposed between at least two of the mixed beds 100. In case the control assembly 300 switches the operation mode to the regeneration mode based on the switching assembly 200, at least one of the mixed beds 100 is able to discharge its produced water to the buffer tank in an independent operation manner, i.e. the mixed bed 100 may be regenerated in divided periods, i.e. partially regenerated operation. The buffer tank and the temporary storage tank can be the same tank body. During regeneration, the mixed bed 100 may be stopped temporarily, and the working pressure of the upstream water treatment facility may be increased. A buffer tank can be arranged between the mixed bed and the upstream water treatment equipment, and when the mixed bed is regenerated, the water of the upstream water treatment equipment is buffered in the buffer tank.
Preferably, the control component 300 is capable of adjusting at least a period of time by the deep learning unit according to at least one characteristic parameter of water production from the mixed bed. The characteristic parameters of the mixed bed produced water comprise at least one of PH value and conductivity. The deep learning unit can be a convolution neural network unit, a circulation neural network unit and a generation countermeasure network unit. For example, if the PH and conductivity of the produced water are relatively stable, the interval of time may be extended; however, the PH and conductivity of the produced water have high variability, which shortens the interval of time. The control assembly 300 is adapted to adapt to characteristics of the produced water to calculate a relative rate of change between characteristic values, enhancing the ability of the deionization system to adapt to the water treatment environment.
Based on the above-described apparatus, the present invention easily contemplates a deionization method for a deionization system including at least two mixed beds 100, the method at least comprising: the at least two mixed beds 100 can be operated in series or in parallel through the switching accessory 200, the switching accessory 200 is connected to the control component 300 in a communication mode, and the control component 300 can determine whether the switching accessory 200 acts to change the operation mode of the at least two mixed beds 100 according to the water quality and/or the water yield of the mixed bed and respectively referring to the water quality and/or the water yield of the incoming water based on at least one period of time.
Preferably, in the case where the amount of the incoming water is less than the set threshold value, at least two mixed beds 100 are connected to the downstream water treatment unit 400 in series with each other, and at this time, the control module 300 is communicatively connected to at least the first produced water data collecting means of the communication pipe provided between the two mixed beds 100, so that the control module 300 can change the treatment order of the incoming water by the at least two mixed beds 100 through the switching attachment 200 in such a manner that the at least two mixed beds 100 can still operate in series with each other, based on at least the produced water quality of the preceding mixed bed.
Even if the water inlet sequence of the mixed bed is changed by monitoring and analyzing the water quality and/or water quantity and based on the monitoring result and the analysis result, the mixed bed still has a bias flow phenomenon due to uneven flow distribution. The resin surface is impacted by water flow, so that a local area which is deformed due to pressure increase is often formed, and further, a partial area of the resin is broken down, so that ion exchange cannot be normally carried out. Preferably, the mixed bed is provided with a uniform distributor 100a which is secured by a securing plate so that incoming water is substantially uniformly maintained within the mixed bed by the anion bed 100b and/or the cation bed 100 c.
Preferably, the applicator 100a is provided with several preformed holes. Wherein, a preformed hole corresponds an equipartition nozzle. The uniformly distributed nozzles comprise a uniform flow water inlet chamber, a throttling bladder chamber and a water distribution water chamber which are sequentially and axially communicated from top to bottom. The flow equalizing water inlet chamber is in an open state, and a plurality of water inlet runners are arranged on the side wall of the flow equalizing water inlet chamber and used for water inlet. The bottom of the water distribution chamber is closed, and the side surface of the water distribution chamber is provided with a plurality of opening gaps for spraying the inlet water to the anion bed 100b and/or the cation bed 100c approximately uniformly. The throttling liner chamber is a reducing section between the flow equalizing water inlet chamber and the water distribution chamber, is used for pressurizing, improves the pressure of water flow, can effectively prevent the nozzle from being blocked by dirt, further enables the water flow to be uniformly distributed and reduces the occurrence of a bias flow phenomenon; and because its wall thickness increases, can increase the joint strength with the preformed hole, prevent to drop. The uniform distributor 100a can effectively solve the bias flow phenomenon of the resin in the bed body of the mixed bed. Effectively solving the problem of bias current and remarkably improving mu 0 The exchange period between the mixed beds is prolonged, and the regeneration period of the mixed bed system can be further prolonged.
Preferably, the size of the gap of the opening of the water distribution chamber is smaller than the diameter of the ion resin of the anion bed 100b and/or the cation bed 100 c. Because the anion bed and the cation bed are easily punctured by the gravity of water, the water sprayed out from the water distribution water chamber is trickle, the gap of the opening is smaller than the diameter of the resin, the water flow easily passes through, the ion exchange is carried out in the passing process, and the technical problem that the anion bed and the cation bed are easily punctured by the gravity of the water is effectively solved.
In general, since the mixed bed is an ion exchange device and a water softening device, the conductivity is the most important criterion, and thus the conductivity is the first criterion of the ion exchange capacity. The water yield is taken as a second requirement, if the water yield is lower than the water yield, the mixed bed is indicated to be polluted and blocked, the treatment sequence of the mixed bed for the water is required to be changed, and the phenomenon of no water production caused by pollution and blocking is prevented. The pH value can also be used as a third essential to assist the first essential to judge, if the acidity or alkalinity of produced water is not high compared with the acidity or alkalinity of the incoming water respectively, the ion exchange capacity is weak, the change condition of the conductivity is reflected on the side surface, and the auxiliary analysis can be performed under the condition that the conductivity meter is inaccurate.
In the present invention, the control component 300 may be a platform with data analysis function and data communication function, and is configured with software, hardware and/or a combination of software and hardware, such as a PLC controller, a cloud, a computer, a mobile phone, etc., capable of at least implementing the functions required by the present invention.
In the present invention, the data obtained by the control module 300 is derived from a water source collecting device, such as a PH detector, a conductivity detector, an electromagnetic flow meter, etc. Alternatively, the data obtained by the control module 300 may also be input from engineering personnel, for example, windows are provided on the mixed bed, and the engineering personnel can see the flowing state of water in the mixed bed through the windows.
In the present invention, the downstream water treatment unit 400 may be a system, a device, or an apparatus, such as a reverse osmosis system, a nanofiltration system, an activated carbon adsorption device, a salt separation system, or a water storage apparatus.
It is easily conceivable that the mixed bed of the present invention is also replaced by a single bed device (ion exchanger), such as a cation or anion bed device, which should also fall within the scope of the present invention.
The present specification encompasses multiple inventive concepts and the applicant reserves the right to submit divisional applications according to each inventive concept. The present description contains several inventive concepts, such as "preferably", "according to a preferred embodiment" or "optionally", each indicating that the respective paragraph discloses a separate concept, the applicant reserves the right to submit divisional applications according to each inventive concept.
It should be noted that the above-mentioned embodiments are exemplary, and that those skilled in the art, having benefit of the present disclosure, may devise various arrangements that are within the scope of the present disclosure and that fall within the scope of the invention. It should be understood by those skilled in the art that the present specification and figures are illustrative only and are not limiting upon the claims. The scope of the invention is defined by the claims and their equivalents.
Claims (7)
1. An ion exchange system for demineralised water, capable of deionising incoming water, comprising at least two mixed beds (100), said at least two mixed beds (100) being capable of being switched in operation mode by means of a switching attachment (200), said operation mode comprising at least a series operation mode and a parallel operation mode, characterized in that,
the switching attachment (200) is communicatively connected to a control assembly (300), the control assembly (300) is capable of switching the current operation mode of the at least two mixing beds (100) to another operation mode by determining whether the switching attachment (200) is actuated in a manner that the switching attachment (200) refers to the corresponding incoming water characteristic parameter based on at least one mixed bed water production characteristic parameter for at least a period of time,
in case the quantity of the incoming water is less than a set threshold value, the at least two mixed beds (100) are connected to a downstream water treatment unit (400) in series with each other,
at this time, the control assembly (300) is at least communicatively connected to a first produced water data acquisition device of a communication pipeline arranged between the two mixed beds (100) so that the control assembly (300) can change the treatment sequence of the incoming water by the at least two mixed beds (100) through the switching attachment (200) in a manner that the at least two mixed beds (100) can still operate in series with each other based on at least one produced water characteristic parameter of a preceding mixed bed with reference to its corresponding incoming water characteristic parameter,
when the water volume is larger than the set threshold value, the at least two mixing beds (100) are communicated to a downstream water treatment unit (400) in a parallel connection way,
wherein the content of the first and second substances,
the mixing bed (100) comprises an equispaced device (100 a), the equispaced device (100 a) is provided with a plurality of preformed holes, the preformed holes correspond to at least one equispaced nozzle, the equispaced nozzle comprises a flow equalizing water inlet chamber, a throttling bladder chamber (100 a-1 b) and a water distribution water chamber (100 a-1 a) which are sequentially and axially communicated from top to bottom, wherein,
the side surface of the water distribution chamber (100 a-1 a) is provided with a plurality of opening gaps for spraying inlet water to the anion bed (100 b) and/or the cation bed (100 c), and the size of the opening gaps is smaller than the diameter of the anion bed (100 b) and/or the cation bed (100 c) ion resin; and
the throttling gallbladder chambers (100 a-1 b) are configured to be diameter-reducing sections between the flow equalizing water inlet chamber and the water distribution water chamber (100 a-1 a).
2. Ion exchange system according to claim 1, wherein a buffer tank is provided between the at least two mixed beds (100) such that in case the control assembly (300) switches the operation mode to the regeneration mode based on the switching attachment (200), at least one of the mixed beds (100) can discharge its produced water to the buffer tank in an independent operation.
3. The ion exchange system of claim 2, wherein the regeneration mode is determined as follows:
s1: a second water production data acquisition device is arranged on a communication pipeline between the at least two mixed beds (100) and the downstream water treatment unit (400);
s2: the control component (300) is in communication connection with the second water production data acquisition device;
s3: the control component (300) determines whether to regenerate based on the water production characteristic parameters collected by the second water production data collection device during at least a period of time; or, the control component (300) determines whether to regenerate based on the mode that the water production characteristic parameters collected by the second water production data collection device refer to the corresponding water inlet characteristic parameters.
4. The ion exchange system of claim 3, wherein the control assembly (300) is capable of adjusting the at least one period of time via a deep learning unit based on at least one mixed bed produced water characteristic parameter, the mixed bed produced water characteristic parameter comprising at least one of pH and conductivity.
5. The ion exchange system according to any one of claims 1 to 4, wherein the water inlet pipes of at least two mixed beds are respectively provided with a mixed bed A water inlet valve I and a mixed bed B water inlet valve I;
the bottom parts of the mixed bed A and the mixed bed B are communicated with water production pipelines connected in parallel, and the water production pipelines of the mixed bed A and the mixed bed B are respectively provided with a mixed bed A water production valve I and a mixed bed B water production valve I; the water inlet pipeline and the water production pipeline of the mixed bed A and the mixed bed B are connected through a pipeline I, a water inlet valve II of the mixed bed A and a water production valve II of the mixed bed A are arranged on the pipeline I connected between the water inlet pipeline and the water production pipeline of the mixed bed A, and a water inlet valve II of the mixed bed B and a water production valve II of the mixed bed B are arranged on the pipeline I connected between the water inlet pipeline and the water production pipeline of the mixed bed B; the pipeline I between the water inlet valve II of the mixed bed A and the water producing valve II of the mixed bed A is communicated with the pipeline I between the water inlet valve II of the mixed bed B and the water producing valve II of the mixed bed B through the pipeline II.
6. A deionization method for a deionization system comprising at least two mixed beds (100) according to claim 1, said method comprising at least: the at least two mixing beds (100) being capable of operating in series or in parallel by means of a switching appendage (200), characterized in that,
communicatively connecting the switching accessory (200) to a control component (300),
the control component (300) can determine whether the switching attachment (200) is operated to change the operation mode of the at least two mixed beds (100) according to the mode of referring to the quality and/or quantity of the incoming water respectively based on the quality and/or quantity of the mixed bed produced water for at least a period of time,
in case the quantity of the incoming water is less than a set threshold value, the at least two mixed beds (100) are connected to a downstream water treatment unit (400) in series with each other,
at this time, the control assembly (300) is at least communicatively connected to a first produced water data acquisition device of a communication pipeline arranged between the two mixed beds (100) so that the control assembly (300) can change the treatment sequence of the incoming water by the at least two mixed beds (100) through the switching attachment (200) in a manner that the at least two mixed beds (100) can still operate in series with each other based on at least one produced water characteristic parameter of a preceding mixed bed with reference to its corresponding incoming water characteristic parameter,
when the amount of the supplied water is larger than a set threshold value, the at least two mixed beds (100) are communicated to a downstream water treatment unit (400) in a parallel connection way,
wherein the content of the first and second substances,
the mixing bed (100) comprises an equispaced device (100 a), the equispaced device (100 a) is provided with a plurality of preformed holes, the preformed holes correspond to at least one equispaced nozzle, the equispaced nozzle comprises a flow equalizing water inlet chamber, a throttling bladder chamber (100 a-1 b) and a water distribution water chamber (100 a-1 a) which are sequentially and axially communicated from top to bottom, wherein,
the side surface of the water distribution chamber (100 a-1 a) is provided with a plurality of opening gaps for spraying inlet water to the anion bed (100 b) and/or the cation bed (100 c), and the size of the opening gaps is smaller than the diameter of the anion bed (100 b) and/or the cation bed (100 c) ion resin; and
the throttling gallbladder chambers (100 a-1 b) are configured to be diameter-reducing sections between the flow equalizing water inlet chamber and the water distribution water chamber (100 a-1 a).
7. The deionization method according to claim 6, wherein said at least two mixed beds (100) are connected to a downstream water treatment unit (400) in series with each other in case the amount of incoming water is less than a set threshold,
at this time, the control assembly (300) is at least communicatively connected to a first produced water data acquisition device of a communication pipeline arranged between the two mixed beds (100), so that the control assembly (300) can change the treatment sequence of the incoming water by the at least two mixed beds (100) through the switching accessory (200) according to the mode that the at least two mixed beds (100) can still operate in series with each other at least based on the produced water quality of the preceding mixed bed.
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| CN113960116B (en) * | 2021-10-21 | 2023-06-20 | 常州博瑞电力自动化设备有限公司 | Device and method for testing dynamic performance of ion exchange resin of converter valve cooling system |
| CN115159620A (en) * | 2022-05-30 | 2022-10-11 | 开能健康科技集团股份有限公司 | Soft water structure and regeneration method thereof |
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