CN215917005U - Membrane cleaning equipment with wash water recovery unit - Google Patents
Membrane cleaning equipment with wash water recovery unit Download PDFInfo
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- CN215917005U CN215917005U CN202122301029.1U CN202122301029U CN215917005U CN 215917005 U CN215917005 U CN 215917005U CN 202122301029 U CN202122301029 U CN 202122301029U CN 215917005 U CN215917005 U CN 215917005U
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Abstract
The utility model discloses a membrane cleaning device with a cleaning water recovery device, which comprises an acid washing liquid tank, a pure water tank and an alkali washing liquid tank, wherein the acid washing liquid tank is connected with the pure water tank; the pickling solution tank is connected with a reverse osmosis membrane water inlet pipeline through a pickling, pure water and alkali washing supply pipeline respectively; the reverse osmosis membrane water inlet pipeline is connected with a reverse osmosis membrane, the reverse osmosis membrane water outlet water production pipeline and the concentrated water pipeline are sequentially connected with the membrane cleaning liquid water outlet mixing pipeline, the acid and alkali liquid mixing return pipeline and the acid and alkali flushing water collecting pipeline, and the acid flushing water collecting pipeline is sequentially connected with the acid flushing liquid recovery box, the acid flushing liquid return pump, the first filter, the acid flushing liquid return pipeline, the acid liquor mixing return pipeline and the acid cleaning liquid tank; the effluent of the alkali washing water collection pipeline is sequentially connected with an alkali washing liquid recovery tank, an alkali washing liquid reflux pump, a second filter, an alkali washing liquid reflux pipeline, an alkali liquid mixed reflux pipeline and an alkali washing liquid tank. The device can recover the flushing water, so that the cyclic utilization is realized, the resource waste is reduced, and the environmental pollution is avoided.
Description
Technical Field
The utility model belongs to the technical field of membrane cleaning, and particularly relates to membrane cleaning equipment with a cleaning water recovery device.
Background
Reverse osmosis is a new water treatment technology by membrane method, so it is named as reverse osmosis because its operation process is opposite to that of osmosis process. The technology utilizes the selective permeability of a functional polymer semipermeable membrane to realize the purification and desalination of the water body. Reverse osmosis systems must be operated with energy that overcomes membrane resistance and fluid osmotic pressure, which is typically provided by a booster pump. Good permselectivity ensures that the reverse osmosis membrane removes a large proportion of contaminants such as dissolved organics, inorganic salts, colloids and dissolved solids from the water during operation.
Water in nature is not pure, various particulate matters, colloids, organic matters, inorganic matters, microorganisms and other substances may be contained in water, and the substances are easily adsorbed or deposited on the surface of a membrane in the reverse osmosis operation process, so that the surface of the membrane is polluted and blocked, the selective permeability and the separation efficiency of the membrane are reduced, and the phenomenon is called the pollution of a reverse osmosis membrane. The reverse osmosis membrane needs to be cleaned after being polluted, and the flux and the salt rejection rate of the cleaned membrane can be generally restored to be similar to the level of a new membrane. The membrane cleaning needs acid washing and alkali washing, when acid washing and alkali washing procedures are switched, the pipeline and the remained cleaning liquid in the membrane need to be washed to be neutral by clear water, the existing cleaning device is not provided with a cleaning water recovery device, most of the cleaning water is directly discharged outside, and resource waste and environmental pollution are caused.
SUMMERY OF THE UTILITY MODEL
Aiming at the problems in the prior art, the utility model provides membrane cleaning equipment with a cleaning water recovery device.
The utility model is realized in this way, a membrane cleaning equipment with a cleaning water recovery device, comprising an acid washing liquid box (1), a pure water box (2) and an alkali washing liquid box (3); the method is characterized in that: the pickling solution tank is connected with a reverse osmosis membrane water inlet pipeline through a pickling supply pipeline, a pure water supply pipeline and an alkali washing supply pipeline respectively;
the pickling supply pipeline sequentially comprises a pickling supply control valve (1-1), a pickling pump (4) and a pickling filter (8), and a water outlet pipe of the pickling filter (8) is connected with a reverse osmosis membrane water inlet pipeline (9);
the pure water supply pipeline sequentially comprises a clean water supply control valve (2-1) and a pure water pump (5), and a water outlet pipe of the pure water pump (5) is connected with a reverse osmosis membrane water inlet pipeline (9);
the alkaline washing supply pipeline sequentially comprises an alkaline washing supply control valve (3-1), an alkaline washing pump (6) and an alkaline washing filter (8), and a water outlet pipe of the alkaline washing filter (8) is connected with a reverse osmosis membrane water inlet pipeline (9);
the reverse osmosis membrane water inlet pipeline (9) is at least connected with a reverse osmosis membrane (10) on one branch, the water outlet of the reverse osmosis membrane (10) is divided into a water production pipeline (11) and a concentrated water pipeline (12), the water production pipeline (11) and the concentrated water pipeline (12) are both connected to a membrane cleaning liquid water outlet mixing pipeline (13), two ends of the membrane cleaning liquid water outlet mixing pipeline (13) are respectively connected to an acid liquid mixing reflux pipeline (18) and an alkali liquid mixing reflux pipeline (25), the membrane cleaning liquid water outlet mixing pipeline (13) is provided with two branches, one branch is an acid washing water collecting pipeline (14), the other branch is an alkali washing water collecting pipeline (20), an acid liquid pH probe (26) is arranged on the acid washing water collecting pipeline (14), the water outlet of the acid washing water collecting pipeline (14) is connected with an acid washing liquid recovery tank (15), the water outlet of the acid washing liquid recovery tank (15) is connected with an acid washing liquid reflux pump (16), the water outlet of the acid flushing liquid reflux pump (16) is connected with a first filter (17), the water outlet of the first filter (17) is connected with an acid flushing liquid reflux pipeline (19), the acid flushing liquid reflux pipeline (19) is connected with an acid liquid mixed reflux pipeline (18), and the acid liquid mixed reflux pipeline (18) is connected with an acid washing liquid tank;
alkali wash water is equipped with alkali lye pH probe (27) on collecting pipeline (20), alkali wash water is collected pipeline (20) and is gone out water and connect alkali wash liquid collection box (21), alkali wash liquid collection box (21) goes out water and connects alkali wash liquid backwash pump (22), the play water connection second filter (23) of alkali wash liquid backwash pump (22), second filter (23) go out water connection alkali wash liquid return line (24), alkali wash liquid return line (24) are connected alkali lye and are mixed return line (25), alkali lye mixed return line (25) are connected alkali wash liquid case.
The utility model has the advantages and technical effects that:
compared with the prior art, the utility model has the advantages that:
the device is provided with an acid and alkali flushing fluid recovery box, flushing water can be recovered, acid and alkali liquor in the recovery box can be directly cleaned when the membrane pollution degree is low, the acid and alkali liquor in the flushing water box can be circulated to the cleaning box when cleaning fluid needs to be prepared again, and then a certain amount of new cleaning agent is added according to the preparation requirement, so that cyclic utilization is achieved, resource waste is reduced, environmental pollution is avoided, and water resources are saved.
The filter is arranged behind the acid and alkali washing liquid tank of the device, and washing water can be filtered and recycled to the washing tank, so that pollutants in the washing water are prevented from entering the acid and alkali washing liquid tank, and the washing liquid is ensured not to generate secondary pollution to the membrane.
The device can clean a single membrane, and can also clean a plurality of membranes simultaneously, thereby improving the cleaning efficiency.
The device is provided with an acid-alkali solution pH probe, and the washing process is stopped when the pH reaches 6.5-8.5, so that the washing water quantity can be saved and the water consumption can be reduced.
Drawings
FIG. 1 is a schematic diagram of the present invention;
FIG. 2 is a flow diagram of the acid wash of the present invention;
FIG. 3 is a flow diagram of the rinsing acid of the present invention;
FIG. 4 is a flow diagram of the alkaline cleaning process of the present invention;
FIG. 5 is a flow diagram of the rinsing base of the present invention;
FIG. 6 is a flow diagram of acid liquor recycling;
FIG. 7 is a flow chart of lye reuse.
1. A pickling solution tank; 1-1, pickling supply control valve; 2. a pure water tank; 2-1, a pure water supply control valve; 3. an alkaline cleaning solution tank; 3-1, supplying a control valve with alkaline washing; 4. a pickling pump; 5. a clean water pump; 6. an alkaline washing pump; 7. washing a filter with alkali; 8, pickling a filter; 9. a reverse osmosis membrane water inlet pipeline; 10. a reverse osmosis membrane; 11. a water production pipeline; 12. a concentrated water pipeline; 13. a membrane cleaning fluid outlet mixing pipeline; 14. an acid washing water collection pipeline; 15. an acid flushing fluid recovery tank; 16. an acid rinse return pump; 17. a first filter; 18. an acid liquid mixing reflux pipeline; 19. an acid rinse return line; 20. an alkaline flushing water collection pipeline; 21. an alkaline washing liquid recovery tank; 22. an alkaline rinse return pump; 23. a second filter; an alkaline rinse return line; 25. an alkali liquor mixing and refluxing pipeline; 26. acid liquor pH probe; 27. and (5) an alkali liquor pH probe.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
Referring to fig. 1, a membrane cleaning apparatus with a cleaning water recycling device includes an acid cleaning solution tank 1, a pure water tank 2, and an alkaline cleaning solution tank 3; the method is characterized in that: the pickling solution tank is connected with a reverse osmosis membrane water inlet pipeline through a pickling supply pipeline, a pure water supply pipeline and an alkali washing supply pipeline respectively;
the pickling supply pipeline sequentially comprises a pickling supply control valve 1-1, a pickling pump 4 and a pickling filter 8, and a water outlet pipe of the pickling filter 8 is connected with a reverse osmosis membrane water inlet pipeline 9;
the pure water supply pipeline sequentially comprises a pure water supply control valve 2-1 and a pure water pump 5, and a water outlet pipe of the pure water pump 5 is connected with a reverse osmosis membrane water inlet pipeline 9;
the alkaline washing supply pipeline sequentially comprises an alkaline washing supply control valve 3-1, an alkaline washing pump 6 and an alkaline washing filter 7, and a water outlet pipe of the alkaline washing filter 7 is connected with a reverse osmosis membrane water inlet pipeline 9;
the reverse osmosis membrane water inlet pipeline 9 is at least connected with a reverse osmosis membrane 10 on one branch, the water outlet of the reverse osmosis membrane 10 is divided into a water production pipeline 11 and a concentrated water pipeline 12, the water production pipeline 11 and the concentrated water pipeline 12 are both connected on a membrane cleaning liquid water outlet mixing pipeline 13, two ends of the membrane cleaning liquid water outlet mixing pipeline 13 are respectively connected with an acid liquid mixing return pipeline 18 and an alkali liquid mixing return pipeline 25, the membrane cleaning liquid water outlet mixing pipeline 13 is provided with two branches, one branch is an acid flushing water collecting pipeline 14, the other branch is an alkali flushing water collecting pipeline 20, an acid pH probe 26 is arranged on the acid flushing water collecting pipeline 14, the water outlet of the acid flushing water collecting pipeline 14 is connected with an acid flushing liquid recovery box 15, the water outlet of the acid flushing liquid recovery box 15 is connected with an acid flushing liquid return pump 16, the water outlet of the acid flushing liquid return pump 16 is connected with a first filter 17, and the water outlet of the first flushing liquid filter 17 is connected with an acid flushing liquid return pipeline 19, the acid washing liquid return pipeline 19 is connected with the acid liquid mixing return pipeline 18, and the acid liquid mixing return pipeline 18 is connected with the acid washing liquid tank;
the alkali washing water collecting pipeline 20 is provided with an alkali liquor pH probe 27, the alkali washing water collecting pipeline 20 discharges water and is connected with an alkali washing liquid recovery box 21, the alkali washing liquid recovery box 21 discharges water and is connected with an alkali washing liquid reflux pump 22, the water of the alkali washing liquid reflux pump 22 is connected with a second filter 23, the water of the second filter 23 is connected with an alkali washing liquid reflux pipeline 24, the alkali washing liquid reflux pipeline 24 is connected with an alkali liquor mixed reflux pipeline 25, and the alkali liquor mixed reflux pipeline 25 is connected with an alkali washing liquid box.
The cleaning mode of the membrane comprises acid cleaning-washing-alkali cleaning-washing, alkali cleaning-washing-acid cleaning-washing and the like, an engineer can select the process flow according to the pollution condition of the membrane, and the process introduction is carried out by the acid cleaning-washing-alkali cleaning-washing process as follows:
acid washing process: the reverse osmosis membrane is placed into the device after being disassembled on site, the membrane is firstly cleaned in an acid liquor circulation mode, the cleaning formula and the cleaning time are determined by the pollution condition of the membrane, and the acid cleaning process is shown in figure 2.
Rinsing acid flow: after the acid washing, the acid liquor washing is carried out, the washing liquor is recycled to the acid washing liquor recycling box 15, the change of the pH value of the acid liquor (measured by an acid liquor pH probe 26) needs to be paid attention to during the washing, when the pH value of the acid liquor reaches 6.5-8.5, the washing process is stopped, the washing water quantity is saved, the water consumption is reduced, and then the alkaline washing process is carried out, specifically referring to FIG. 3.
An alkali washing process: the alkali washing is cyclic washing, the washing formula and the washing time are determined by the pollution condition of the membrane, and the alkali washing flow is shown in figure 4.
Alkali washing process: after the alkali washing is finished, alkali liquor washing is carried out, the washing liquid is recycled to an alkali washing liquid recycling box 21, the change of the pH (measured by an alkali liquor pH probe 27) of the alkali liquor needs to be concerned during washing, and when the pH of the alkali liquor reaches 6.5-8.5, the washing process is stopped; see in particular fig. 5.
5. Acid-alkali liquor recycling flow: in the washing process, the acid-base washing liquid is collected in the acid-base liquid recovery tank and has a certain pH value, the acid-base liquid in the recovery tank can be reused, for example, when the membrane pollution degree is low, the acid-base liquid in the recovery tank can be directly washed by the acid-base liquid in the recovery tank, the acid-base liquid in the recovery tank can also be returned to the acid-base washing liquid tank, and the formula allocation is performed on the basis to meet the washing liquid parameters, so that the usage amount of the medicament is saved, see fig. 6 and 7.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (1)
1. A membrane cleaning device with a cleaning water recovery device comprises an acid washing liquid tank (1), a pure water tank (2) and an alkali washing liquid tank (3); the method is characterized in that: the pickling solution tank is connected with a reverse osmosis membrane water inlet pipeline through a pickling supply pipeline, a pure water supply pipeline and an alkali washing supply pipeline respectively;
the pickling supply pipeline sequentially comprises a pickling supply control valve (1-1), a pickling pump (4) and a pickling filter (8), and a water outlet pipe of the pickling filter (8) is connected with a reverse osmosis membrane water inlet pipeline (9);
the pure water supply pipeline sequentially comprises a clean water supply control valve (2-1) and a pure water pump (5), and a water outlet pipe of the pure water pump (5) is connected with a reverse osmosis membrane water inlet pipeline (9);
the alkaline washing supply pipeline sequentially comprises an alkaline washing supply control valve (3-1), an alkaline washing pump (6) and an alkaline washing filter (7), and a water outlet pipe of the alkaline washing filter (7) is connected with a reverse osmosis membrane water inlet pipeline (9);
the reverse osmosis membrane water inlet pipeline (9) is at least connected with a reverse osmosis membrane (10) on one branch, the water outlet of the reverse osmosis membrane (10) is divided into a water production pipeline (11) and a concentrated water pipeline (12), the water production pipeline (11) and the concentrated water pipeline (12) are both connected to a membrane cleaning liquid water outlet mixing pipeline (13), two ends of the membrane cleaning liquid water outlet mixing pipeline (13) are respectively connected to an acid liquid mixing reflux pipeline (18) and an alkali liquid mixing reflux pipeline (25), the membrane cleaning liquid water outlet mixing pipeline (13) is provided with two branches, one branch is an acid washing water collecting pipeline (14), the other branch is an alkali washing water collecting pipeline (20), an acid liquid pH probe (26) is arranged on the acid washing water collecting pipeline (14), the water outlet of the acid washing water collecting pipeline (14) is connected with an acid washing liquid recovery tank (15), the water outlet of the acid washing liquid recovery tank (15) is connected with an acid washing liquid reflux pump (16), the water outlet of the acid flushing liquid reflux pump (16) is connected with a first filter (17), the water outlet of the first filter (17) is connected with an acid flushing liquid reflux pipeline (19), the acid flushing liquid reflux pipeline (19) is connected with an acid liquid mixed reflux pipeline (18), and the acid liquid mixed reflux pipeline (18) is connected with an acid washing liquid tank;
alkali wash water is equipped with alkali lye pH probe (27) on collecting pipeline (20), alkali wash water is collected pipeline (20) and is gone out water and connect alkali wash liquid collection box (21), alkali wash liquid collection box (21) goes out water and connects alkali wash liquid backwash pump (22), the play water connection second filter (23) of alkali wash liquid backwash pump (22), second filter (23) go out water connection alkali wash liquid return line (24), alkali wash liquid return line (24) are connected alkali lye and are mixed return line (25), alkali lye mixed return line (25) are connected alkali wash liquid case.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122301029.1U CN215917005U (en) | 2021-09-18 | 2021-09-18 | Membrane cleaning equipment with wash water recovery unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122301029.1U CN215917005U (en) | 2021-09-18 | 2021-09-18 | Membrane cleaning equipment with wash water recovery unit |
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| Publication Number | Publication Date |
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| CN215917005U true CN215917005U (en) | 2022-03-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122301029.1U Active CN215917005U (en) | 2021-09-18 | 2021-09-18 | Membrane cleaning equipment with wash water recovery unit |
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| CN (1) | CN215917005U (en) |
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2021
- 2021-09-18 CN CN202122301029.1U patent/CN215917005U/en active Active
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