CN212091709U - Dispersion cleaning system of ultrafiltration device - Google Patents
Dispersion cleaning system of ultrafiltration device Download PDFInfo
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- CN212091709U CN212091709U CN201921695525.6U CN201921695525U CN212091709U CN 212091709 U CN212091709 U CN 212091709U CN 201921695525 U CN201921695525 U CN 201921695525U CN 212091709 U CN212091709 U CN 212091709U
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- ultrafiltration
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Abstract
The utility model relates to an ultrafiltration device dispersion cleaning system, its characterized in that, it includes: an ultrafiltration water tank, an ultrafiltration backwashing pump, a pipeline mixer and an ultrafiltration device; the water outlet of the ultrafiltration water tank is connected with the water inlet pipe of an ultrafiltration backwashing pump, the water outlet pipe of the ultrafiltration backwashing pump is connected with a pipeline mixer, the pipeline mixer comprises a plurality of dosing ports, the water outlet of the pipeline mixer is connected with a backwashing water inlet main pipe of an ultrafiltration device, and the connection distance between the pipeline mixer and a backwashing water main pipe of the ultrafiltration device is not more than 8 meters; the ultrafiltration device also comprises a water production pipe connected with the water inlet of the ultrafiltration water tank. The utility model discloses can improve the abluent effect of dispersion, reduce the waste of water, can reach the abluent effect of best dispersion with minimum water, and can not lead to remaining of medicament on the connecting tube.
Description
Technical Field
The utility model relates to an ultrafiltration device backwash specifically includes an ultrafiltration device dispersion cleaning system.
Background
Ultrafiltration is a membrane separation technique, the pore size of the membrane is 0.005-0.1 μm, the molecular weight cutoff is about 1000-500,000 daltons, the filtration is a separation process that colloid, particles and substances with relatively high molecular weight in water are cut off under the action of external driving force (pressure), and solutes with smaller particles and water molecules permeate the membrane, so that the treated water is purified. After the ultrafiltration equipment operates for a certain time, backwashing in a conventional period and online dispersion strengthening cleaning are carried out, so that intercepted matters adhered to the surface of the membrane can be removed through backwashing, and ultrafiltration can reach the standard to produce water after backwashing.
After the ultrafiltration gets into the dispersion washing step, among the current cleaning system, the line mixer is installed on the female pipe of ultrafiltration backwash pump extraction mouth, and at least more than 50 meters with the connecting tube distance between the ultrafiltration device, and the connecting tube overlength mainly brings the problem of following three aspects:
on the first hand, in the drainage step, the membrane cavity of the ultrafiltration device is drained, after the backwashing step is carried out, due to the hysteresis of the medicament, backwashing water directly enters the ultrafiltration device and then is directly discharged into a trench to cause water resource waste before being mixed with the medicament; in the second aspect, due to the medicament lag, after the ultrafiltration enters the backwashing step, backwashing water cannot perform a dispersive cleaning effect, so that the ultrafiltration cannot achieve the expected cleaning effect; in the third aspect, after the ultrafiltration backwashing step is finished and the soaking step is carried out, the medicament retained after lag in the connecting pipeline of the backwashing water is discharged into the ultrafiltration device directly when the next set of ultrafiltration enters the conventional periodic backwashing, so that the medicament is not flushed positively completely in the forward flushing stage of the ultrafiltration device during backwashing, and the ultrafiltration water is likely to be acidic or alkaline, thereby affecting the process.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
In order to solve the above problems in the prior art, the present invention provides a dispersion cleaning system for an ultrafiltration device, which prevents retention of a drug.
(II) technical scheme
In order to achieve the above object, the utility model discloses a main technical scheme include:
an ultrafiltration device decentralized cleaning system, comprising: an ultrafiltration water tank, an ultrafiltration backwashing pump, a pipeline mixer and an ultrafiltration device;
the water outlet of the ultrafiltration water tank is connected with the water inlet pipe of an ultrafiltration backwashing pump, the water outlet pipe of the ultrafiltration backwashing pump is connected with a pipeline mixer, the pipeline mixer comprises a plurality of dosing ports, the water outlet of the pipeline mixer is connected with a backwashing water inlet main pipe of an ultrafiltration device, and the connection distance between the pipeline mixer and a backwashing water main pipe of the ultrafiltration device is not more than 8 meters; the ultrafiltration device also comprises a water production pipe connected with the water inlet of the ultrafiltration water tank.
The scheme can improve the effect of dispersed cleaning, reduce the waste of water, achieve the best effect of dispersed cleaning by using the least water and can not cause the residue of the medicament on the connecting pipeline.
Further, the distance between the pipeline mixer and the connection of the backwashing water main pipe of the ultrafiltration device is 1.5-4 meters.
Furthermore, the pipeline mixer is connected with a backwashing water inlet main pipe of the ultrafiltration device through a connecting pipeline.
The plurality of dosing ports comprise a hydrochloric acid dosing port, a liquid caustic soda dosing port and a sodium hypochlorite dosing port. Hydrochloric acid, caustic soda liquid and sodium hypochlorite can be respectively put into corresponding dosing ports on the pipeline mixer through dosing metering pumps.
Furthermore, a backwashing water inlet valve is arranged on the backwashing water main pipe of the ultrafiltration device.
Furthermore, the ultrafiltration device also comprises a positive water inlet pipe, a positive water discharge pipe for discharging water to a trench and a reverse discharge pipe.
Furthermore, a water inlet valve is arranged on the positive water inlet pipe, a positive discharge valve is arranged on the positive water outlet pipe, a reverse discharge valve is arranged on the reverse discharge pipe, and a water production valve is arranged on the water production pipe.
Furthermore, a backwashing water inlet valve is arranged on a backwashing water inlet main pipe of the ultrafiltration device.
The working principle is as follows:
the online dispersion cleaning of ultrafiltration is divided into acid cleaning and alkali cleaning, and the main adding agents comprise hydrochloric acid, caustic soda liquid and sodium hypochlorite, wherein the hydrochloric acid is added during the acid cleaning, the caustic soda liquid and the sodium hypochlorite are added during the alkali cleaning, and the dispersion cleaning steps are divided into six steps of drainage, backwashing, soaking, medicine discharge, forward flushing and operation. When the ultrafiltration enters the online dispersive cleaning step, the ultrafiltration device firstly enters the drainage step to open a positive discharge valve and a negative discharge valve, so that the membrane cavity water in the ultrafiltration device is drained firstly, after the ultrafiltration backwashing step, when an ultrafiltration backwashing water inlet valve and the positive discharge valve are opened, an ultrafiltration backwashing pump is started to operate, a dosing metering pump adds a medicament into a pipeline mixer at the moment, and the medicament is mixed with backwashing water extracted by an ultrafiltration water tank through the ultrafiltration backwashing pump in the pipeline mixer and then enters the ultrafiltration device, and then enters the online dispersive cleaning process; after the cleaning is finished, after the ultrafiltration device discharges the medicines, and after the water is fed and positively flushed, the operation is carried out after the cleaning is finished.
(III) advantageous effects
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses with the distance that the pipe-line mixer moved more than 50 meters to ultrafiltration apparatus female pipe of intaking, keep pipe-line mixer and ultrafiltration apparatus female pipe of intaking at suitable distance, it is a small amount of backwash water to be detained in the pipeline that makes to connect, not only can reduce a large amount of backwash water and directly arrange the trench, play the water economy resource purpose, and can be better than former technology cleaning performance on the dispersion washing, can not remaining medicament basically on the connecting tube after the dispersion washing at last, like acidizing fluid or alkali lye, can not influence subsequent backwash and ultrafiltration product water quality of water, more can satisfy the stable requirement of process systems production.
Drawings
Fig. 1 is a schematic connection diagram of the present invention;
[ description of reference ]
1: an ultrafiltration water tank;
2: an ultrafiltration backwash pump;
3: a pipeline mixer;
4: backwashing the water main pipe; 41: backwashing the water inlet valve;
5: a positive water inlet pipe; 51: a water inlet valve;
6: an ultrafiltration device;
7: reversely discharging the tubes; 71 a reverse exhaust valve;
8: a positive drain pipe; 81: a positive displacement valve;
9: a water production pipe; 91 water producing valve;
10: and (4) digging a trench.
Detailed Description
For a better understanding of the present invention, reference will now be made in detail to the present invention, examples of which are illustrated in the accompanying drawings.
As shown in fig. 1: an ultrafiltration device 6 decentralized cleaning system, comprising: an ultrafiltration water tank 1, an ultrafiltration backwashing pump 2, a pipeline mixer 3 and an ultrafiltration device 6;
the water outlet of the ultrafiltration water tank 1 is connected with the water inlet pipe of the ultrafiltration backwashing pump 2, the water outlet pipe of the ultrafiltration backwashing pump 2 is connected with the pipeline mixer 3, the pipeline mixer 3 comprises a plurality of dosing ports, the water outlet of the pipeline mixer 3 is connected with a backwashing water inlet main pipe of the ultrafiltration device 6, and the distance between the pipeline mixer 3 and the backwashing water main pipe 4 of the ultrafiltration device 6 is not more than 8 meters; the ultrafiltration device 6 also comprises a water production pipe 9 connected with the water inlet of the ultrafiltration water tank 1.
Wherein, the ultrafiltration device 6 filters the impurities in the incoming water to play a role of purifying the water quality, and after the ultrafiltration device 6 filters the purified water, the produced water flows to the ultrafiltration water tank 1 through the water production pipe 9 to be stored; wherein, the ultrafiltration backwashing pump 2 is used for extracting water in the ultrafiltration water tank 1 as backwashing water at the backwashing stage of the ultrafiltration device 6. Wherein the pipeline mixer 3 is used for uniformly mixing the extracted backwash water with the medicament. And the ultrafiltration device 6 is subjected to dispersive cleaning by backwashing the ultrafiltration device 6, wherein the ultrafiltration device is subjected to acid washing and alkali washing, hydrochloric acid is added in the acid washing stage, and liquid caustic soda and sodium hypochlorite are added in the alkali washing stage. The utility model discloses the distance of being connected pipeline mixer 3 and 6 backwash water mother pipes 4 of ultrafiltration device is no longer than 8 meters, makes pipeline mixer 3's medicament not have lagged phenomenon.
In order to prevent the medicament from having hysteresis and enable the medicament flowing out of the pipeline mixer 3 to be buffered and mixed with the backwashing water for enough time, the waste of the medicament is avoided, and the distance between the pipeline mixer 3 and the backwashing water main pipe 4 of the ultrafiltration device 6 is preferably 1.5-4 m. Experiments show that under the conditions that the pressure of backwash water is 0.18-0.22 MPA and the flow rate of the backwash water is 1.34-1.42 m/s, the distance between the pipeline mixer 3 and the backwash water main pipe 4 of the ultrafiltration device 6 is 1.5-4 m, the effect is better, and the optimal distance is 2 m.
Preferably, the pipeline mixer 3 is connected with a backwashing water inlet main pipe of the ultrafiltration device 6 through a connecting pipeline.
Wherein the plurality of dosing ports comprise a hydrochloric acid dosing port, a caustic soda liquid dosing port and a sodium hypochlorite dosing port.
Wherein, a backwashing water inlet valve 41 is arranged on the backwashing water main pipe 4 of the ultrafiltration device 6.
Wherein, the ultrafiltration device 6 also comprises a positive water inlet pipe 5, a positive water outlet pipe and a negative water outlet pipe 7 which are used for discharging water to a trench 10.
Wherein, the water inlet valve 51 is arranged on the positive water inlet pipe 5, the positive water outlet pipe 8 is provided with the positive discharge valve 81, the reverse discharge pipe 7 is provided with the reverse discharge valve 71, and the water production pipe 9 is provided with the water production valve 91.
Wherein, a backwashing water inlet valve 41 is arranged on a backwashing water inlet main pipe of the ultrafiltration device 6.
The dispersion cleaning method adopting the ultrafiltration device 6 comprises the following steps:
s1 drainage: closing the positive water inlet valve 51, opening the positive discharge valve 81 and the reverse discharge valve 71, and draining residual water in the membrane cavity of the ultrafiltration device 6;
s2 backwashing: closing the back discharge valve 71, opening the ultrafiltration backwashing water inlet valve 41, starting the ultrafiltration backwashing pump 2, simultaneously starting the dosing pump, dosing the medicament into the pipeline mixer 3, mixing the medicament with backwashing water in the pipeline mixer 3, and then feeding the medicament into the ultrafiltration device 6;
s3 soaking: after the ultrafiltration backwashing pump 2 and the dosing pump are stopped, closing the ultrafiltration backwashing water inlet valve 41, closing the positive discharge valve 81, and carrying out ultrafiltration to the soaking step;
s4 discharge: after ultrafiltration soaking is finished, opening an ultrafiltration positive discharge valve 81 and an ultrafiltration negative discharge valve 71, carrying out ultrafiltration discharge for 3.5min, and emptying the medicament in the ultrafiltration membrane cavity;
s5 positive impact: the ultrafiltration feed valve 51 is opened and the ultrafiltration back-drain valve 71 is closed. Performing ultrafiltration for 15 min;
s6 commissioning: after ultrafiltration and positive flushing, the ultrafiltration water production valve 91 is opened, the ultrafiltration positive discharge valve 81 is closed, and ultrafiltration enters operation.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (8)
1. An ultrafiltration device decentralized cleaning system, characterized in that it comprises: an ultrafiltration water tank (1), an ultrafiltration backwashing pump (2), a pipeline mixer (3) and an ultrafiltration device (6);
the water outlet of the ultrafiltration water tank (1) is connected with the water inlet pipe of an ultrafiltration backwashing pump (2), the water outlet pipe of the ultrafiltration backwashing pump (2) is connected with a pipeline mixer (3), the pipeline mixer (3) comprises a plurality of dosing ports, the water outlet of the pipeline mixer (3) is connected with a backwashing water inlet main pipe of an ultrafiltration device (6), and the distance between the pipeline mixer (3) and a backwashing water main pipe (4) of the ultrafiltration device (6) is not more than 8 meters; the ultrafiltration device (6) also comprises a water production pipe (9) connected with the water inlet of the ultrafiltration water tank (1).
2. The ultrafiltration device decentralized cleaning system according to claim 1, characterized in that: the distance between the pipeline mixer (3) and the backwashing water main pipe (4) of the ultrafiltration device (6) is 1.5-4 m.
3. The ultrafiltration device decentralized cleaning system according to claim 1 or 2, characterized in that: the pipeline mixer (3) is connected with a backwashing water inlet main pipe of the ultrafiltration device (6) through a connecting pipeline.
4. The ultrafiltration device decentralized cleaning system according to claim 1 or 2, characterized in that: the plurality of dosing ports comprise a hydrochloric acid dosing port, a liquid caustic soda dosing port and a sodium hypochlorite dosing port.
5. The ultrafiltration device decentralized cleaning system according to claim 1, characterized in that: and a backwashing water inlet valve (41) is arranged on the backwashing water main pipe (4) of the ultrafiltration device (6).
6. The ultrafiltration device decentralized cleaning system according to claim 1, characterized in that: the ultrafiltration device (6) also comprises a positive water inlet pipe (5), a positive water outlet pipe (8) for discharging water to a trench (10) and a reverse drain pipe (7).
7. The ultrafiltration device decentralized cleaning system according to claim 6, characterized in that: be equipped with water intaking valve (51) on positive inlet tube (5), be equipped with positive valve (81) on positive drain pipe (8), be equipped with anti-valve (71) of arranging on anti-calandria (7), be equipped with on product water pipe (9) and produce water valve (91).
8. The ultrafiltration device decentralized cleaning system according to claim 1, characterized in that: a backwashing water inlet valve (41) is arranged on a backwashing water inlet main pipe of the ultrafiltration device (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921695525.6U CN212091709U (en) | 2019-10-11 | 2019-10-11 | Dispersion cleaning system of ultrafiltration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921695525.6U CN212091709U (en) | 2019-10-11 | 2019-10-11 | Dispersion cleaning system of ultrafiltration device |
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| Publication Number | Publication Date |
|---|---|
| CN212091709U true CN212091709U (en) | 2020-12-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921695525.6U Active CN212091709U (en) | 2019-10-11 | 2019-10-11 | Dispersion cleaning system of ultrafiltration device |
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| CN (1) | CN212091709U (en) |
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- 2019-10-11 CN CN201921695525.6U patent/CN212091709U/en active Active
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