CN111453788A - Dosing method and device for slowing down drug failure - Google Patents
Dosing method and device for slowing down drug failure Download PDFInfo
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- CN111453788A CN111453788A CN202010239125.5A CN202010239125A CN111453788A CN 111453788 A CN111453788 A CN 111453788A CN 202010239125 A CN202010239125 A CN 202010239125A CN 111453788 A CN111453788 A CN 111453788A
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- 239000003814 drug Substances 0.000 title claims abstract description 340
- 229940079593 drug Drugs 0.000 title claims abstract description 53
- 238000000034 method Methods 0.000 title claims abstract description 42
- 239000007788 liquid Substances 0.000 claims abstract description 227
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 137
- 239000012452 mother liquor Substances 0.000 claims abstract description 87
- 239000007787 solid Substances 0.000 claims abstract description 19
- 238000007865 diluting Methods 0.000 claims abstract description 7
- 238000003860 storage Methods 0.000 claims description 97
- 238000007599 discharging Methods 0.000 claims description 24
- 238000002360 preparation method Methods 0.000 claims description 21
- 230000001105 regulatory effect Effects 0.000 claims description 15
- 239000010413 mother solution Substances 0.000 claims description 9
- 230000000116 mitigating effect Effects 0.000 claims 4
- 239000000843 powder Substances 0.000 abstract description 14
- 230000000694 effects Effects 0.000 abstract description 12
- 230000000857 drug effect Effects 0.000 description 20
- 239000000243 solution Substances 0.000 description 16
- 238000004090 dissolution Methods 0.000 description 14
- 239000000463 material Substances 0.000 description 9
- 238000005303 weighing Methods 0.000 description 9
- 238000002156 mixing Methods 0.000 description 7
- 239000000126 substance Substances 0.000 description 7
- 238000003756 stirring Methods 0.000 description 6
- 230000006866 deterioration Effects 0.000 description 5
- 238000002474 experimental method Methods 0.000 description 5
- 238000010790 dilution Methods 0.000 description 4
- 239000012895 dilution Substances 0.000 description 4
- 238000005345 coagulation Methods 0.000 description 3
- 230000015271 coagulation Effects 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 238000006460 hydrolysis reaction Methods 0.000 description 2
- 230000007721 medicinal effect Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000701 coagulant Substances 0.000 description 1
- 238000003113 dilution method Methods 0.000 description 1
- 238000001647 drug administration Methods 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000008177 pharmaceutical agent Substances 0.000 description 1
- 229940126589 solid medicine Drugs 0.000 description 1
- 239000011232 storage material Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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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
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Abstract
The invention belongs to the technical field of water treatment dosing, and particularly relates to a dosing method and device for slowing down drug failure. The method comprises a medicine dispensing step and a medicine adding step, and the medicine liquid is added into a water treatment pool within a very short time after being prepared. Aiming at the method, the invention also provides a dosing device for diluting the mother liquor at the tail end of the pipeline and a dosing device for regularly and quantitatively dissolving the solid medicament powder. The technical scheme of the invention can ensure that the medicament hardly deteriorates to influence the medicament effect, thereby reducing the use amount of the medicament and reducing the process cost.
Description
Technical Field
The invention belongs to the technical field of water treatment dosing, and particularly relates to a dosing method and device for slowing down drug failure.
Background
In water treatment processes, operations involving the addition of various agents to water are often involved. The medicament is required to be prepared into a solution for use before being added into water.
In the prior art, in order to ensure the continuity of dosing operation, a pack of high-concentration mother liquor obtained by dissolving a solid powder medicament is stored in a storage tank (pool), or the high-concentration mother liquor is directly purchased from a medicament manufacturer and is firstly stored in the storage tank (pool), a part of the mother liquor is taken out on the day of use to be diluted into a solution with proper concentration (convenient for mixing and adding), and the solution is stored in another storage tank (pool) for the day or on duty. When medicine needs to be added, the liquid medicine with proper concentration is output from a storage tank (pool); when the amount of the liquid medicine in the storage tank (pool) is insufficient, the liquid medicine is supplemented in time through the preparation device.
In order to dilute the medicament infrequently and facilitate use, the medicament is diluted and prepared in an amount of at least one day or 8 hours per shift during each dilution process. This is problematic in that a relatively large amount of prepared liquid medicine is likely to occur, and some liquid medicine is used first and some liquid medicine is used later, and the liquid medicine used later is left in the storage tank (reservoir) for a relatively long time. In addition, some water treatment plants have a certain distance between the storage tank and the water treatment tank due to the layout, and the pipe for delivering the liquid medicine may have a length of several hundreds of meters, and the residence time of the liquid medicine in the pipe may reach several hours. Generally, the above situation is considered by those skilled in the art to have no effect on the dosing process. However, it has been found through experiments of the inventors that the diluted drug solution is more likely to undergo hydrolysis reaction with water after being stored for a certain period of time to generate a precipitate insoluble in water, resulting in a decrease in drug efficacy, as compared to a solution prepared immediately after the solid powder or a high-concentration mother solution. Further, the medicine effect is insufficient when the medicine liquid added later is used, and a good water treatment effect can be achieved only by adding more medicine liquid, so that the medicine is wasted, and the process cost is increased.
Disclosure of Invention
The invention provides a dosing method and a dosing device for specifically slowing down drug failure, aiming at the problems that in the prior art, due to long storage time of prepared liquid medicine or diluted mother liquor, the drug effect is reduced when a part of liquid medicine used later is used, more liquid medicine needs to be added to achieve a good water treatment effect, the waste of the drug is caused, and the process cost is improved, wherein the dosing method and the dosing device are used for: the powder or the finished mother liquor is continuously metered and dissolved or diluted, and the storage process after preparation is cancelled, so that the on-line preparation or dilution for the preparation is realized; under the condition that the adding amount of the mother liquor is smaller than that of the mother liquor, the mother liquor is directly conveyed to the position close to the adding point to be measured and diluted to be the concentration required by the process. The scheme can reduce the loss of drug effect, further reduce the use amount of the drug and save the cost.
The technical scheme adopted by the invention is as follows:
a medicine adding method for slowing down medicine failure comprises a medicine dispensing step and a medicine adding step, wherein the medicine dispensing step and the medicine adding step are both carried out in a mode disclosed by the prior art, and the medicine dispensing step is to obtain liquid medicine with the process requirement concentration by dissolving solid medicine or diluting mother liquor; the medicine adding step is to add the liquid medicine obtained in the medicine dispensing step into the water treatment tank; and the liquid medicine is added into the water treatment pool within 10 minutes after the preparation of the liquid medicine is finished.
In a preferable mode, the dosage step is to obtain the liquid medicine with the concentration required by the process by continuously metering and continuously dissolving the solid medicament, or continuously metering and continuously diluting the mother liquor to obtain the liquid medicine with the concentration required by the process; the medicine adding step is to add the liquid medicine obtained in the medicine dispensing step into the water treatment tank; and the liquid medicine is added into the water treatment pool within 10 minutes after the preparation of the liquid medicine is finished.
As another preferred mode, the dosage step is to prepare a mother solution with a certain concentration and high concentration by continuously metering and continuously dissolving the solid medicament, directly conveying the mother solution to an adding point which is close to the adding point for further dilution, and the step can also directly use the finished mother solution. The medicine adding step is to add the liquid medicine obtained in the medicine dispensing step into the water treatment tank; and the liquid medicine is added into the water treatment pool within 10 minutes after the preparation of the liquid medicine is finished.
Because the technicians in the field do not realize that the reduction rate of the drug effect of the drug is related to the excessively low concentration and the excessively long flowing time of the liquid medicine (particularly when the dosage is small, the diameter of a pipeline for conveying the liquid medicine is larger, the flowing time is longer, and the liquid medicine is often added into a water treatment pool after hours), the storage tank is arranged for storing the liquid medicine with the low concentration or the pipeline with the excessively large diameter is used for conveying the diluted liquid medicine, so that the drug effect is reduced when the liquid medicine is actually used, and more drug needs to be added to achieve the effect required by the water treatment process. After the technical scheme is adopted, the powder or the mother liquor and the water are prepared in situ in the dosing process of the water treatment, so that after the liquid medicine with proper concentration is prepared, the liquid medicine is not stored or conveyed for a long time, but is added into a water treatment pool as soon as possible. The time between the preparation of the liquid medicine into proper concentration and the addition of the liquid medicine into the water treatment tank is shorter, so that the medicine effect can be ensured not to be influenced by the deterioration of the medicine, the using amount of the medicine can be reduced, and the process cost can be reduced.
The invention provides a device for the dosing method for slowing down drug failure, which comprises a mother liquor tank and a water delivery pipe I, wherein the mother liquor tank is provided with a mother liquor delivery pipe, the tail end of the mother liquor delivery pipe is communicated with the tail end of the water delivery pipe I, and the rear end of the communicated part of the mother liquor delivery pipe and the water delivery pipe I is connected with a water treatment tank.
After the technical scheme is adopted, the solution prepared by the medicament is stored in the mother liquor tank in the form of high-concentration mother liquor, and the high-concentration mother liquor is discharged into the mother liquor conveying pipe. When the liquid medicine of suitable concentration is added to the aquatic of treating, send into water through raceway I, water and mother liquor mix the dilution in the position of the end of mother liquor conveyer pipe and the end intercommunication of raceway I, and the proportion of flow control mother liquor and water in this scheme through control mother liquor conveyer pipe and the raceway to the concentration of the medicine in the liquid medicine of control final output, the completion is diluted and is carried and get into the water treatment pond. In the scheme, the storage of the liquid medicine is mainly carried out in a mode of high-concentration mother liquor, so that compared with a mode of storing the liquid medicine with proper concentration for a long time in the prior art, the liquid medicine is not easy to deteriorate and lose.
Preferably, the length of the mother liquor conveying pipe is 20-500m, and the length of the water conveying pipe I is 20-500 m. The length of the range is the distance of liquid medicine conveying which is common in water plants, and the invention is equivalent to that one pipeline for conveying liquid medicine with proper concentration originally is changed into two pipelines, wherein a mother liquid conveying pipe is used for conveying high-concentration mother liquid, and a water conveying pipe I is used for conveying water. The scheme can effectively reduce the deterioration speed of the liquid medicine in the storage tank or the conveying pipeline.
Preferably, the mother liquor conveying pipe is provided with a liquor feeding pump, a flow regulating valve I and a flowmeter I, and the water conveying pipe I is provided with a flow regulating valve II and a flowmeter II. The mother liquor delivery pipe and the water delivery pipe I are respectively controlled in flow rate so as to quantitatively control the concentration of the diluted liquid medicine, and the preferred scheme is one form.
Preferably, the mother liquor conveying pipe is connected with a return pipe, the connecting part of the mother liquor conveying pipe and the return pipe is positioned at the rear end of the liquid feeding pump, the tail end of the return pipe is communicated with the mother liquor tank, and the return pipe is provided with a flow regulating valve III and a flow meter III. This preferred scheme is applicable to the condition that the liquid sending pump does not have the flow control function, through the effect of back flow ration backward flow, conveniently controls the flow in the mother liquor conveyer pipe.
Preferably, the mother liquor tank is provided with a solid medicament adding device and a water conveying pipe II. In the preferred scheme, the preparation of the mother liquor is directly carried out in the mother liquor tank, the solid medicament is added by the solid medicament adding device, and the water is added by the water conveying pipe II. The scheme simplifies the structure of the whole device and occupies smaller area.
Preferably, the water conveying pipe II is provided with a flow regulating valve III and a flowmeter III. This preferred scheme is for controlling the flow of raceway II to the volume of intaking of mother liquor jar can the ration control.
Further preferably, a stirring device is provided in the mother liquor tank.
Further preferably, the solid medicament adding device comprises a large storage bin, a discharge port is formed in the lower end of the large storage bin, a metering device is arranged below the discharge port, and an outlet of the metering device is communicated with the mother liquor tank. This preferred embodiment enables dosing of the solid pharmaceutical agent into the mother liquor tank.
Further preferably, an anti-hardening stirrer is arranged in the large storage bin.
Further preferably, the bottom of the large silo is provided with one or more of a vibrator, a high-pressure air nozzle or a high-pressure air hammer.
Above-mentioned preferred scheme can stir or vibrate the medicament, avoids the medicament to harden in big feed bin to can guarantee that big feed bin stores the medicament in a large number in a long time.
Further preferably, a supporting part is arranged on the lower part of the large storage bin, and a plurality of weighing sensors are arranged between the large storage bin and the supporting part. A weighing sensor is arranged between the large storage bin and the supporting part for supporting the large storage bin, so that the weight of the large storage bin can be monitored in real time, and the residual quantity of the medicine in the large storage bin can be judged.
The invention also provides another device for the dosing method for slowing down drug failure, which comprises a storage bin and a quantitative water inlet system, wherein a metering device is arranged at a discharge hole of the storage bin, a discharge hole of the metering device is connected with a timed dissolution storage device for dissolving to form liquid medicine and storing the liquid medicine at a timed mode, the quantitative water inlet system is connected with the timed dissolution storage device, and the tail end of the timed dissolution storage device is connected with a first liquid medicine discharge pipe.
After the technical scheme is adopted, the metering device can quantitatively provide medicinal powder for the timing dissolving storage device, and the quantitative water inlet system simultaneously supplies water for the dissolving storage device in a quantitative mode, so that the medicinal liquid is quantitatively prepared in the dissolving storage device, the quantitatively prepared medicinal liquid can be conveyed and used through the first medicinal liquid discharge pipe within a certain time, the continuity of conveying the medicinal liquid can be guaranteed, and the medicinal effect of the medicinal liquid conveyed every time is not obviously lost.
Preferably, the timing dissolving storage device comprises a plurality of first dissolving bins, the volume of each first dissolving bin is 0.3-2 cubic, the discharge port and the quantitative water inlet system of the metering device are respectively connected with the first dissolving bin which is positioned at the front end of the connecting sequence in the connecting sequence, the first liquid medicine discharge pipe is connected with the first dissolving bin which is positioned at the tail end of the connecting sequence, the adjacent first dissolving bins are communicated with each other, and baffle plates which are staggered up and down are arranged between the adjacent first dissolving bins. By adopting the preferred scheme, the timed dissolving storage device is provided, the volume of a first dissolving bin is selected to be 0.3-2 cubic cubes, if the volume of the first dissolving bin is too small to meet the demand of liquid medicine, the volume of the first dissolving bin is too large to cause the reduction of the medicine effect in the medicine taking process, the volume of a single first dissolving bin is selected to be 0.3-2 cubic cubes, a metering device and a quantitative water inlet system are respectively connected with the first dissolving bin at the foremost end, a first liquid medicine discharge pipe is connected with the first dissolving bin at the rearmost end, so that when the liquid medicine is prepared in the first dissolving bin at the foremost end, the first dissolving bin at the foremost end is filled with the liquid medicine firstly, the liquid medicine flows to the first dissolving bin at the rearmost end from mutually staggered baffles, the time between the dissolution and the addition of the liquid medicine into a water treatment tank can be accurately controlled by controlling the number and the solvent of the first dissolving bins, the long-time retention of the liquid medicine is avoided, so that the drug effect of the liquid medicine taken from the first dissolving bin at the tail end can well meet the use requirement of the subsequent process, the liquid medicine can be taken and prepared at the same time, the storage time after the preparation of the liquid medicine is finished is controlled, and the drug effect of the liquid medicine can be ensured.
Preferably, regularly dissolve storage device and include that the second dissolves the storehouse and several liquid medicine stores the storehouse, the volume that the storehouse was stored to the liquid medicine is 0.3-2 cubes, the second dissolves the feed inlet in storehouse and is connected with metering device and ration water inlet system respectively, the second dissolves the storehouse and is connected with the feed inlet in storehouse is stored to each liquid medicine respectively, first liquid medicine discharging pipe is connected with the discharge gate in storehouse is stored to each liquid medicine respectively. Adopt this preferred scheme, a regularly dissolve storage device is provided, after preparing the liquid medicine in the second dissolves the storehouse, flow into any liquid medicine and store the storehouse, take the liquid medicine through first liquid medicine discharging pipe when needs are got it filled, when taking the liquid medicine, the second dissolves the storehouse and begins to dispense, the liquid medicine that will prepare flows into other liquid medicines and stores the storehouse in, can accomplish to get promptly and match promptly like this, satisfy under the condition of getting a large amount of medicines, the drug effect of liquid medicine does not have decline, a large amount of liquid medicines of disposable preparation have been avoided, can't get up, cause the surplus drug effect to deposit along with the time, the circumstances that the drug effect descends.
Preferably, the metering device is a weightless scale or a screw metering scale.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
1. the time between the preparation of the liquid medicine into proper concentration and the addition of the liquid medicine into the water treatment tank is shorter, so that the medicine effect can be ensured not to be influenced by the deterioration of the medicine, the using amount of the medicine can be reduced, and the process cost can be reduced.
2. Provided is a device, which is characterized in that the storage of a drug solution is mainly performed in a way of high-concentration mother liquor, so that compared with a way of storing a drug solution with a proper concentration for a long time in the prior art, the drug is not easy to deteriorate and lose.
The optimized scheme is provided, one pipeline for originally conveying liquid medicine with proper concentration is changed into two pipelines, wherein the mother liquid conveying pipe is used for conveying high-concentration mother liquid, and the water conveying pipe I is used for conveying water. Can effectively reduce the deterioration speed of the liquid medicine in the storage tank or the conveying pipeline.
A preferable embodiment is provided in which the solid chemical and water can be quantitatively added to the mother liquor tank and the mother liquor can be quantitatively diluted to a chemical solution having an appropriate concentration.
The preferable scheme is provided, the medicament can be stirred or vibrated, and the hardening of the medicament in a large storage bin is avoided, so that the large storage bin can store a large amount of medicament in a long time.
The utility model provides an optimal scheme sets up weighing sensor between big feed bin and the supporting part that supports big feed bin to can real time monitoring big feed bin's weight and then judge the surplus of medicine in big feed bin.
3. The metering device can quantitatively provide medicinal powder for the timing dissolving and storing device, and the quantitative water inlet system simultaneously supplies water for the dissolving and storing device in a quantitative mode, so that the medicinal liquid can be quantitatively prepared in the dissolving and storing device, the quantitatively prepared medicinal liquid can be conveyed and used through the first medicinal liquid discharging pipe within a certain time, the continuity of conveying the medicinal liquid can be guaranteed, and the medicinal effect of the medicinal liquid conveyed every time is not obviously lost.
The utility model provides a preferred scheme, make metering device and ration system of intaking connect the first storehouse of dissolving of foremost respectively, first liquid medicine discharging pipe connects the first storehouse of dissolving of rearmost end, when beginning to prepare the liquid medicine in the first storehouse of dissolving of foremost end like this, the first storehouse of dissolving of foremost end is full of the liquid medicine at first, the liquid medicine will flow to the first storehouse of dissolving of rearmost end in proper order from the baffle that interlocks each other, through the quantity and the solvent of controlling first storehouse of dissolving, can be accurate control liquid medicine from dissolving to adding the time between the water treatment pond, avoid the liquid medicine to be detained for a long time, so the drug effect of the liquid medicine of using in the first storehouse of dissolving of rearmost end just fine satisfying the use of follow-up process, just so can accomplish and get while joining in marriage, the time of storage after the liquid medicine is prepared has been controlled, the drug effect of liquid medicine can also obtain guaranteeing.
The utility model provides a preferred scheme, make the second dissolve after preparing the liquid medicine in the storehouse, flow in any liquid medicine and store the storehouse, when needs are got medicine, take the liquid medicine through first liquid medicine discharging pipe, when taking the liquid medicine, the second dissolves the storehouse and begins to dispense, the liquid medicine that will prepare flows in other liquid medicines and stores the storehouse, can accomplish to get promptly and allocate promptly like this, satisfy under the condition of getting a large amount of medicines, the drug effect of liquid medicine does not have and descends, the disposable a large amount of liquid medicines of preparing has been avoided, can't get up, cause the circumstances that the surplus drug effect saves time and deposits, the drug effect descends.
Drawings
The invention will now be described, by way of example, with reference to the accompanying drawings, in which:
FIG. 1 is a graph showing the relationship between the standing time of PAC after dissolution and the turbidity removal rate of a water sample after coagulation and precipitation;
FIG. 2 is a schematic structural view of a device for adding diluted mother liquor at the end of a pipeline in example 1 of the present invention;
FIG. 3 is a schematic structural view of a device for adding diluted mother liquor at the end of a pipeline in example 2 of the present invention;
FIG. 4 is a schematic structural view of a drug adding device for quantitatively dispensing drugs and regularly storing drug solution in example 3 of the present invention;
FIG. 5 is a schematic structural view of a drug administration device for quantitatively dispensing drugs and periodically storing drug solutions in example 4 of the present invention.
Wherein: 101-a water conveying pipe I, 102-a mother liquor conveying pipe, 103-a flowmeter II, 104-a flowmeter I, 105-a flow regulating valve II, 106-a flow regulating valve I, 107-a liquid feeding pump, 108-a water conveying pipe II, 109-a flowmeter III, 110-a flow regulating valve III, 111-a mother liquor tank, 112-a large material bin, 113-a material inlet, 114-an anti-hardening stirrer, 115-a weighing sensor, 116-a vibrator, 117-a material outlet, 118-a metering device, 119-a return pipe, 120-a flowmeter III, 121-a flow regulating valve III, 201-a storage material bin, 202-a quantitative water inlet system, 203-a metering device, 204-a first liquid medicine discharging pipe, 205-a first dissolving bin, 206-a baffle plate, 209-a first water inlet pipe, 210-a first water valve, 211-a first liquid outlet valve, 212-a second dissolving bin, 213-a liquid medicine storage bin, 216-a second water inlet pipe, 217-a second water valve, 218-a second liquid medicine outlet pipe, 219-a second liquid outlet valve, 220-a third liquid outlet valve, 221-a material inlet pipe, 222-a material outlet pipe, 223-an anti-hardening stirrer, 224-a weighing sensor, 225-a vibrator and 226-a gate valve.
Detailed Description
All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.
The present invention will be described in detail with reference to fig. 1 to 5.
The invention provides a dosing method for slowing down drug failure, which comprises a dosing step and a dosing step, wherein the dosing step and the dosing step are carried out in a mode disclosed by the prior art, and the dosing step is to obtain a liquid medicine with a process requirement concentration by dissolving a solid drug or diluting a mother solution; the medicine adding step is to add the liquid medicine obtained in the medicine dispensing step into the water treatment tank; and the liquid medicine is added into the water treatment pool within 10 minutes after the preparation of the liquid medicine is finished.
In a preferable mode, the dosage step is to obtain the liquid medicine with the concentration required by the process by continuously metering and continuously dissolving the solid medicament, or continuously metering and continuously diluting the mother liquor to obtain the liquid medicine with the concentration required by the process; the medicine adding step is to add the liquid medicine obtained in the medicine dispensing step into the water treatment tank; and the liquid medicine is added into the water treatment pool within 10 minutes after the preparation of the liquid medicine is finished.
As another preferred mode, the dosage step is to prepare a mother solution with a certain concentration and high concentration by continuously metering and continuously dissolving the solid medicament, directly conveying the mother solution to an adding point which is close to the adding point for further dilution, and the step can also directly use the finished mother solution. The medicine adding step is to add the liquid medicine obtained in the medicine dispensing step into the water treatment tank; and the liquid medicine is added into the water treatment pool within 10 minutes after the preparation of the liquid medicine is finished.
To illustrate the relationship between the time of storage after completion of drug solution preparation and the drug effect, the following experiment was performed:
the method comprises the steps of taking lake water without serious pollution as a water sample of an experiment, taking a polyaluminium chloride coagulant (PAC) as a medicament for coagulation treatment, preparing a PAC solution with a proper concentration by using a beaker and a stirrer, wherein the concentration selected in the experiment is 10 g/L, stopping stirring after all the materials are uniformly stirred and dissolved, standing, starting timing, adding the PAC solution into the lake water sample to be treated according to the adding amount of 49 mg/L of the PAC in the lake water sample to be treated after a preset time is reached, and obtaining the relation between the standing time of the dissolved PAC and the turbidity removal rate of the water sample after coagulation precipitation as shown in figure 1.
The liquid medicine is added into the water treatment tank within 10 minutes after the preparation is finished, and the liquid medicine is dissolved by the structure of the medicament dissolving and conveying equipment. Preferably, a pipeline (such as DN15) with a smaller diameter is adopted as the delivery pipeline of the liquid medicine, so that the delivery speed of the liquid medicine in the pipeline can be effectively increased. The device for implementing the above dosing method is specifically described below by way of specific examples.
Example 1
In the description of the pipeline in this embodiment, the "rear end" refers to the direction of the flow of water or liquid medicine in the pipeline, and the "end" refers to the position of the pipeline about to enter the water treatment tank or the next connecting part.
As shown in fig. 2, the dosing device for diluting mother liquor at the tail end of a pipeline comprises a mother liquor tank 111 and a water conveying pipe i 101, wherein the mother liquor tank 111 is provided with a mother liquor conveying pipe 102.
The lengths of the mother liquor delivery pipe 102 and the water delivery pipe I101 are determined according to the field delivery distance, according to the flocculation experiment result shown in figure 1, if the liquid medicine prepared from the dispensing point can reach the dispensing point in 3 minutes, the drug effect of the medicine cannot be influenced, the drug effect of the medicine can be influenced after more than three minutes, particularly, in small water plants, the amount of the added medicine is small due to small water treatment amount, the distance from the dispensing point to the dispensing point is long, the diameter of a medicine adding pipeline is large due to the use of the medicine adding pipeline (the medicine stays in the pipeline for a long time, hydrolysis phenomenon is serious, precipitates are more, pipe blockage is easily caused, the liquid is generally delivered by the pipeline with the larger diameter, so that the stay time of the diluted medicine in the pipeline is longer, and the drug effect is lower).
If the dosage is usually calculated according to 8kg (powder) and diluted to 20 times, the diluted solution is 160kg, a pipeline with the diameter of 32mm is used, the length of the pipeline through which the liquid passes is 9.9 meters within three minutes, that is, if the dosage exceeds the addition distance of 9.9 meters, the drug effect of the drug is reduced, so that the distance can be increased to 25.34 meters by reducing the diameter of the pipeline, for example, the diameter of 20mm, when the drug is further diluted, for example, 8kg of the drug is diluted to 40 times, the drug can flow to 50.68 meters within three minutes, if the drug needs to be conveyed for a longer distance, the tube diameter cannot be further reduced, and the drug effect is inevitably and remarkably influenced.
In this embodiment, the length of the mother liquor conveying pipe 102 is 20-500m, and the length of the water conveying pipe i 101 is 20-500 m. The length of the range is the distance of liquid medicine conveying which is common in water plants, and the invention is equivalent to that one pipeline for conveying liquid medicine with proper concentration originally is changed into two pipelines, wherein a mother liquid conveying pipe 102 is used for conveying high-concentration mother liquid, and a water conveying pipe I101 is used for conveying water. The tail end of the mother liquor conveying pipe 102 is communicated with the tail end of a water conveying pipe I101, and a water treatment pool is connected to the rear end of the communicated part of the mother liquor conveying pipe 102 and the water conveying pipe I101. In order to rapidly mix the mother liquor and the water, a mixing device can be arranged at the position where the mother liquor conveying pipe 102 is communicated with the water conveying pipe I101, and the outlet of the mixing device is communicated with a water treatment pool. The mixing device can be selected from an ejector and the like.
The mother liquor conveying pipe 102 is provided with a liquor conveying pump 107, the liquor conveying pump 107 can select a magnetic pump or a booster pump, the mother liquor conveying pipe 102 is further provided with a flow regulating valve I106 and a flow meter I104, and the water conveying pipe I101 is provided with a flow regulating valve II 105 and a flow meter II 103. Thereby the mixing proportion of the mother liquor and the water can be quantitatively controlled, and the concentration of the diluted liquid medicine can be controlled.
The mother liquor tank 111 is provided with a solid medicament adding device and a water conveying pipe II 108, and the mother liquor tank 111 is internally provided with a stirring device. And the water conveying pipe II 108 is provided with a flow regulating valve III 10 and a flowmeter III 109. Thereby, the amount of water to be added to the mother liquid tank 111 can be controlled quantitatively.
The flow control valve and the flow meter are used in combination to quantitatively control the amount of the liquid to be added, and in some embodiments, may be implemented in other ways, such as a pressure pump or a metering pump.
The solid medicament adding device comprises a large material bin 112, wherein an anti-hardening stirrer 114 is arranged in the large material bin 112, and one or more of a vibrator 116, a high-pressure air nozzle or a high-pressure air hammer are arranged at the bottom of the large material bin 112. The purpose of the above structure is to stir the medicament powder in the large storage bin 112, avoiding hardening of the medicament powder. The lower part of the big storage bin 112 is provided with a supporting part, and a plurality of weighing sensors 115 are arranged between the big storage bin 112 and the supporting part. The amount of the powdered medicine remaining in the large storage bin 112 can be judged in real time by the load cell 115. The lower end of the large storage bin 112 is provided with a discharge hole 117, a metering device 118 is arranged below the discharge hole 117, the metering device 118 can select a weightlessness scale or a spiral metering device, and an outlet of the metering device is communicated with the mother liquor tank 111. With the above structure, the purpose of quantitatively adding the solid medicinal powder into the mother liquid tank 111 can be realized.
In the embodiment, quantitative (or excessive) medicament powder is added into the mother liquor tank 111 through the large storage bin 112, then, quantitative water is fed to prepare high-concentration mother liquor to be stored in the mother liquor tank 111, and meanwhile, the high concentration is always maintained in the process of conveying the mother liquor to the water treatment tank through the mother liquor conveying pipe 102, so that the deterioration and invalidation speed of the medicament is slowed down; and finally, before the mother liquor is added into the water treatment tank, the mother liquor and water are mixed and diluted into a proper concentration for use, the distance between the mixing device and the water treatment tank is close enough, and the mother liquor can be added into the water treatment tank within three minutes after being diluted into a liquid medicine with a proper concentration in the mixing device.
Example 2
This embodiment is further improved from embodiment 1 in which the liquid-sending pump is of a type having no flow rate adjusting function. A return pipe 119 is connected to the mother liquor delivery pipe 102, the connection part of the mother liquor delivery pipe 102 and the return pipe 119 is positioned at the rear end of the liquid feeding pump 107, the tail end of the return pipe 119 is communicated with the mother liquor tank 111, and a flow regulating valve III 121 and a flow meter III 120 are arranged on the return pipe 119. The flow rate in the mother liquor delivery pipe 102 is conveniently controlled by the action of quantitative reflux of the reflux pipe 119. Example 3
As shown in fig. 3, the dosing device for quantitatively dispensing and regularly storing liquid medicine comprises a storage bin 201 and a quantitative water inlet system 202, wherein a metering device 203 is arranged at a discharge port of the storage bin 201, a regular dissolving storage device for dissolving and forming liquid medicine and regularly storing the liquid medicine is connected to a discharge port of the metering device 203, the quantitative water inlet system 202 is connected with the regular dissolving storage device, and a first liquid medicine discharge pipe 204 is connected to the tail end of the regular dissolving storage device.
In the scheme, when the quantitative dissolving storage device is used, medicine particles or medicine powder are stored in the storage bin 201, medicine is added into the metering device 203 from the discharge port of the storage bin 201, the metering device 203 can quantitatively control the amount of the medicine added into the timing dissolving storage device, the quantitative water inlet system 202 can also add quantitative water into the timing dissolving storage device, and a flowmeter is arranged in the quantitative water inlet system to realize quantitative control of the water; in order to ensure the drug property of the liquid medicine prepared by the timing dissolution storage device, when the liquid medicine is required to be used, the prepared liquid medicine is taken from the timing dissolution storage device through the first liquid medicine discharging pipe 204, and in order to ensure the drug property of the liquid medicine, the timing dissolution storage device can ensure that the storage time of the prepared solution is controlled within a certain range.
In this embodiment, the storage device includes a plurality of first dissolving chambers 205, the volume of the first dissolving chambers 205 is 0.3-2 cubic, the discharge port and the quantitative water inlet system 202 of the metering device 203 are respectively connected to the first dissolving chambers 205 located at the front end of the connection sequence, the first liquid medicine discharge pipe 204 is connected to the first dissolving chambers 205 located at the tail end of the connection sequence, the adjacent first dissolving chambers 205 are communicated with each other, and vertically staggered baffles 206 are arranged between the adjacent first dissolving chambers 205. By adopting the scheme, a timing dissolving storage device is provided to ensure the property of liquid medicine during medicine taking, the volume of a single proper first dissolving bin 205 is selected to be 0.3-2 cubic meters, the requirement of the liquid medicine dosage required by adding the liquid medicine into a water treatment pool in unit time is met, as an optimal structure, the number of the first dissolving bins 205 is selected to be 3, thus when the medicine and the water are added into the first dissolving bin 205 at the most front end, the medicine and the water can sequentially flow into the subsequent first dissolving bins 205 after the first dissolving bin 205 is prepared, the three first dissolving bins 205 are communicated with each other, baffles 206 which are staggered up and down are arranged between the adjacent first dissolving bins 205, the baffles 206 have the function of realizing continuous operation of medicine preparation, storage and medicine adding, when the liquid medicine is taken from the first dissolving bin 205 at the most tail end, the first dissolving bin 205 at the most front end can realize simultaneous medicine preparation, therefore, the preparation and the taking are carried out simultaneously, the problem that a large amount of liquid medicine prepared at one time needs to be taken for multiple times and used up, and the medicine effect is reduced after the liquid medicine is stored for a long time is solved; each of the first dissolving compartments 205 includes therein an agitator and a dissolving chamber, and the agitator is disposed in the dissolving chamber.
Be provided with first inlet tube 209 between first dissolving bin 205 and the ration water intake system 202, be provided with first water valve 210 on the first inlet tube 209, be provided with first play liquid valve 211 on the first liquid medicine discharging pipe 204. By adopting the scheme, when water needs to be fed into the first dissolving bin 205, the first water valve 210 is opened, the quantitative water feeding system 202 is provided with a flow meter, and the water feeding amount in each time can be controlled; when the prepared liquid medicine needs to be taken, the first liquid outlet valve 211 needs to be opened.
The metering device 203 is a weightless scale or a screw metering scale.
Example 4
As shown in fig. 4, the present embodiment is different from embodiment 2 in that the timed dissolution storage device includes a second dissolution chamber 212 and a plurality of chemical liquid storage chambers 213, the chemical liquid storage chamber 213 has a volume of 0.3-2 cubic, the inlet of the second dissolution chamber 212 is connected to the metering device 203 and the quantitative water inlet 202 system, the second dissolution chamber 212 is connected to the inlet of each chemical liquid storage chamber 213, and the first chemical liquid outlet pipe 204 is connected to the outlet of each chemical liquid storage chamber 213. By adopting the scheme, the timing dissolving and storing device is provided for ensuring the medicine property of the liquid medicine when taking medicine, the volume of a single proper liquid medicine storage bin 213 is selected to be 0.3-2 cubic, the needed liquid medicine dosage is scientifically and reasonably met, as an optimized structure, the number of the liquid medicine storage bins 213 is selected to be three, thus when the medicine and the water enter the second dissolving bin 212, the liquid medicine is prepared in the second dissolving bin 212, the prepared liquid medicine flows into any liquid medicine storage bin 213, in order to ensure the medicine property of the liquid medicine in the liquid medicine storage bins, when the liquid medicine needs to be taken in one liquid medicine storage bin 213, the medicine is taken in one liquid medicine storage bin 213 through the first liquid medicine discharging pipe 204, and the medicine feeding, water feeding and stirring dissolving and dispensing are carried out in the second dissolving bin 212, the prepared liquid medicine flows into different liquid medicine storage bins 213, when the liquid medicine needs to be used next time, the prepared liquid medicine can be ensured in at least one liquid medicine storage bin 213, so that the processes of continuously switching medicine taking in the liquid medicine storage bin 213 and continuously dissolving in the second dissolving bin 212 for preparing and distributing the liquid medicine can be realized, the continuous liquid medicine taking is realized, and the medicine effect of the liquid medicine is ensured; including agitator and dissolution chamber in the second dissolves the storehouse, the agitator sets up and dissolves in the chamber, dissolves the feed inlet in chamber and is connected with metering device 203 and ration water intake system 202 respectively, dissolves the discharge gate in chamber and connects a plurality of liquid medicines respectively and store storehouse 213.
Be provided with second inlet tube 216 between second dissolving bin 212 and the ration intake system 202, be provided with second water valve 217 on the second inlet tube 216, the second dissolve bin 212 with be connected with second liquid medicine discharging pipe 218 between each liquid medicine storage bin 213 respectively, be provided with second play liquid valve 219 on each second liquid medicine discharging pipe 218, be provided with third play liquid valve 220 on each first liquid medicine discharging pipe 204 respectively. By adopting the scheme, when water needs to be fed into the second dissolving bin 212, the second water valve 217 is opened, and the quantitative water feeding system 202 is provided with a flow meter, so that the water feeding amount in each time can be controlled; quantitative control and taking of medicines are achieved through the metering device 203, a second liquid medicine discharging pipe 218 is connected between the second dissolving bin 212 and each liquid medicine storage bin 213 respectively, a second liquid medicine discharging valve 219 is arranged on each second liquid medicine discharging pipe 218, the second dissolving bin 212 can provide prepared liquid medicine between each liquid medicine storage bin 213 respectively, a third liquid medicine discharging valve 220 is arranged on each first liquid medicine discharging pipe 204 respectively, and taking of each liquid medicine storage bin 213 can be controlled respectively.
The above-mentioned embodiments only express the specific embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for those skilled in the art, without departing from the technical idea of the present application, several changes and modifications can be made, which are all within the protection scope of the present application.
Claims (10)
1. A dosing method for slowing down drug failure comprises a dispensing step and a dosing step, and is characterized in that: the dispensing step is to obtain a liquid medicine with a process requirement concentration by dissolving a solid medicament or diluting a mother solution; the medicine adding step is to add the liquid medicine obtained in the medicine dispensing step into the water treatment tank; and the liquid medicine is added into the water treatment pool within 10 minutes after the preparation of the liquid medicine is finished.
2. A device for use in the method of claim 1 for reducing drug failure, comprising: including mother liquor tank (111) and raceway I (101), be provided with mother liquor conveyer pipe (102) on mother liquor tank (111), the terminal intercommunication of the terminal of mother liquor conveyer pipe (102) and raceway I (101), mother liquor conveyer pipe (102) with the rear end at raceway I (101) intercommunication position is connected with the water treatment pond.
3. The medication device for mitigating drug failure of claim 2, wherein: the length of the mother liquor conveying pipe (102) is 20-500m, and the length of the water conveying pipe I (101) is 20-500 m.
4. The device for adding diluted mother liquor to the tail end of the pipeline according to claim 2, is characterized in that: the mother liquor conveying pipe (102) is provided with a liquid conveying pump (107), a flow regulating valve I (106) and a flowmeter I (104), and the water conveying pipe I (101) is provided with a flow regulating valve II (105) and a flowmeter II (103).
5. The device for adding diluted mother liquor to the tail end of the pipeline according to claim 2, is characterized in that: and a solid medicament adding device and a water conveying pipe II (108) are arranged on the mother liquor tank (111).
6. The device for adding diluted mother liquor to the tail end of the pipeline according to claim 2, is characterized in that: and a flow regulating valve III (110) and a flowmeter III (109) are arranged on the water conveying pipe II (108).
7. A device for use in the method of claim 1 for reducing drug failure, comprising: including storing feed bin (201) and ration system of intaking (202), the discharge gate of storing feed bin (201) is provided with metering device (203), the discharge gate of metering device (203) is connected with and is used for dissolving the timing storage device that dissolves that forms the liquid medicine and regularly store the liquid medicine, ration system of intaking (202) with regularly dissolve storage device and connect, regularly dissolve storage device's end-to-end connection has first liquid medicine discharging pipe (204).
8. The medication device for mitigating medication failure according to claim 7, wherein: the timing dissolving storage device comprises a plurality of first dissolving bins (205), the volume of the first dissolving bins (205) is 0.3-2 cubic, a discharge hole and a quantitative water inlet system (202) of the metering device (203) are respectively connected with the first dissolving bins (205) which are positioned at the foremost end of the connecting sequence in the connecting sequence, a first liquid medicine discharge pipe (204) is connected with the first dissolving bins (205) which are positioned at the rearmost end of the connecting sequence, the adjacent first dissolving bins (205) are communicated with each other, and baffle plates (206) which are staggered up and down are arranged between the adjacent first dissolving bins (205).
9. The medication device for mitigating medication failure according to claim 7, wherein: regularly dissolve storage device and include that the second dissolves storehouse (212) and several liquid medicine store storehouse (213), the volume that storehouse (213) was stored to the liquid medicine is 0.3-2 cubes, the feed inlet that storehouse (212) was dissolved to the second respectively with metering device (203) with ration intake (202) headtotail, storehouse (212) is dissolved to the second is connected with the feed inlet that storehouse (213) was stored to each liquid medicine respectively, first liquid medicine discharging pipe (204) is connected with the discharge gate that storehouse (213) was stored to each liquid medicine respectively.
10. The medication device for mitigating medication failure according to claim 7, wherein: the metering device (203) is a weightless scale or a spiral metering scale.
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| CN202010239125.5A CN111453788A (en) | 2020-03-30 | 2020-03-30 | Dosing method and device for slowing down drug failure |
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| CN202010239125.5A CN111453788A (en) | 2020-03-30 | 2020-03-30 | Dosing method and device for slowing down drug failure |
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