CN218924326U - High organic sewage blocking film element chemical cleaning system - Google Patents
High organic sewage blocking film element chemical cleaning system Download PDFInfo
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- CN218924326U CN218924326U CN202223330147.6U CN202223330147U CN218924326U CN 218924326 U CN218924326 U CN 218924326U CN 202223330147 U CN202223330147 U CN 202223330147U CN 218924326 U CN218924326 U CN 218924326U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
- Y02A20/131—Reverse-osmosis
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Abstract
The utility model provides a chemical cleaning system for a high-organic sewage blocking membrane element, which is convenient and quick to clean, can circularly clean and improves cleaning effect, and comprises a reverse osmosis water inlet filter, a reverse osmosis first section, a reverse osmosis second section and a cleaning water tank, wherein the reverse osmosis water inlet filter, the reverse osmosis first section and the reverse osmosis second section are sequentially communicated end to end according to the flowing direction of wastewater, a high-pressure pump is arranged between the reverse osmosis water inlet filter and the reverse osmosis first section, and a booster pump is arranged between the reverse osmosis first section and the reverse osmosis second section; the liquid outlet of the cleaning water tank is sequentially communicated with a cleaning water pump and a cleaning filter, the liquid outlets of the cleaning filter are respectively communicated with the liquid inlets of the first reverse osmosis section and the second reverse osmosis section, and the liquid outlets of the first reverse osmosis section and the second reverse osmosis section are both communicated with the liquid return port of the cleaning water tank.
Description
Technical Field
The utility model relates to the field of reverse osmosis and nanofiltration membrane element chemical cleaning in a high-salt and high-concentration organic wastewater treatment process, in particular to a high-organic sewage blocking membrane element chemical cleaning system.
Background
In the wastewater zero-emission process, the common equipment for treating organic wastewater is a reverse osmosis and nanofiltration membrane wastewater treatment system, as shown in fig. 1, mainly comprising a reverse osmosis water inlet filter, a first reverse osmosis section and a second reverse osmosis section which are sequentially communicated end to end according to the flowing direction of wastewater, wherein a high-pressure pump is arranged between the reverse osmosis water inlet filter and the first reverse osmosis section, and a booster pump is arranged between the first reverse osmosis section and the second reverse osmosis section. Wherein, a plurality of reverse osmosis and nanofiltration membrane elements (generally long tubular structures) are connected in parallel in the first reverse osmosis section and the second reverse osmosis section. However, organic wastewater treated by the reverse osmosis and nanofiltration membrane wastewater treatment system is often wastewater of high-salt and high-concentration organic matters, and the components inside the wastewater are extremely easy to cause fouling and blocking of membrane elements in the first reverse osmosis section and the second reverse osmosis section.
In order to solve the problem of membrane element fouling, chemical cleaning is needed to be carried out on the first reverse osmosis section and the second reverse osmosis section, however, the existing chemical cleaning method is to disassemble and clean the first reverse osmosis section and the second reverse osmosis section separately, or enter chemical cleaning agent through a main inlet and then are discharged from a main outlet, the cleaning agent utilization rate is not high, and the two methods have the problems that the cleaning efficiency is low, the ideal cleaning effect cannot be achieved, and the working progress is delayed.
Disclosure of Invention
In order to solve the defects in the prior art, the utility model provides the chemical cleaning system for the high-organic-pollution blocking film element, which is convenient and quick to clean, can circularly clean and improves the cleaning effect.
The utility model is realized by the following technical scheme:
the chemical cleaning system for the high-organic sewage blocking membrane element comprises a reverse osmosis water inlet filter, a reverse osmosis first section, a reverse osmosis second section and a cleaning water tank, wherein the reverse osmosis water inlet filter, the reverse osmosis first section and the reverse osmosis second section are sequentially communicated end to end according to the flowing direction of wastewater, a high-pressure pump is arranged between the reverse osmosis water inlet filter and the reverse osmosis first section, and a booster pump is arranged between the reverse osmosis first section and the reverse osmosis second section;
the liquid outlet of the cleaning water tank is sequentially communicated with a cleaning water pump and a cleaning filter, the liquid outlets of the cleaning filter are respectively communicated with the liquid inlets of the first reverse osmosis section and the second reverse osmosis section, and the liquid outlets of the first reverse osmosis section and the second reverse osmosis section are both communicated with the liquid return port of the cleaning water tank;
and a fresh water inlet pipe is further arranged at the liquid inlet of the high-pressure pump.
Further, the liquid outlets of the cleaning filter are respectively communicated with the liquid inlets of the first reverse osmosis section and the second reverse osmosis section through a first section cleaning water inlet valve and a second section cleaning water inlet valve matching pipeline, and the liquid outlets of the first reverse osmosis section and the second reverse osmosis section are respectively communicated with the liquid return port of the cleaning water tank through a first section cleaning water valve and a second section cleaning water outlet valve matching pipeline.
Further, the liquid outlet of the reverse osmosis second section is also provided with a concentrated water discharge pipe, and the concentrated water discharge pipe is provided with a concentrated water discharge valve.
Further, a reverse osmosis water inlet control valve is arranged at the liquid outlet of the high-pressure pump, a pressurizing water inlet valve and a pressurizing water outlet valve are respectively arranged at the liquid inlet and the liquid outlet of the booster pump, and a fresh water inlet valve is arranged on the fresh water inlet pipe.
Furthermore, a non-oxidizing bactericide or industrial hydrochloric acid can be added into the cleaning water tank.
Compared with the prior art, the utility model has the following beneficial effects:
1. different cleaning agents can be added into the cleaning water tank in batches, under the action of a cleaning water pump, cleaning water enters the membrane elements in the first reverse osmosis section and the second reverse osmosis section for cleaning, and then enters the cleaning water tank again for circularly cleaning the membrane elements in the first reverse osmosis section and the second reverse osmosis section, so that the cleaning efficiency is greatly improved;
2. the liquid outlets of the cleaning filter are respectively communicated with the liquid inlets of the first reverse osmosis section and the second reverse osmosis section through a first cleaning water inlet valve and a second cleaning water inlet valve matched pipeline, and the liquid outlets of the first reverse osmosis section and the second reverse osmosis section are respectively communicated with the liquid return port of the cleaning pool through a first cleaning water outlet valve and a second cleaning water outlet valve matched pipeline;
3. the liquid outlet of the high-pressure pump is provided with a reverse osmosis water inlet control valve, the liquid inlet and the liquid outlet of the booster pump are respectively provided with a booster water inlet valve and a booster water outlet valve, and when the chemical cleaning agent is used for cleaning, the reverse osmosis water inlet control valve, the booster water inlet valve and the booster water outlet valve can be closed, so that the chemical cleaning agent is prevented from entering the booster pump and the high-pressure pump, and damage to a pump body is avoided.
Drawings
FIG. 1 is a schematic diagram of a prior art reverse osmosis and nanofiltration membrane wastewater treatment system;
FIG. 2 is a schematic diagram of a chemical cleaning system for high organic fouling membrane elements according to the present utility model;
in the figure: 1. the reverse osmosis water inlet filter comprises a reverse osmosis water inlet filter body 2, a reverse osmosis first section, a reverse osmosis second section, a cleaning water tank 4, a cleaning water tank 5, a cleaning water pump 6, a high-pressure pump 7, a booster pump 8, a high-pressure pump water inlet control valve 9, a concentrated water discharge pipe 10, a concentrated water discharge valve 11, a reverse osmosis water inlet control valve 12, a fresh water inlet pipe 13, a fresh water inlet valve 14, a supercharging water inlet valve 15, a supercharging water outlet valve 16, a first-section cleaning water inlet valve 17, a second-section cleaning water inlet valve 18, a first-section cleaning water valve 19 and a second-section cleaning water valve.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings of the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments of the present application without making any inventive effort, are intended to be within the scope of the present application.
In the description of the utility model, it should be understood that the terms "front," "rear," "upper," "lower," "left," "right," and the like indicate an orientation or a positional relationship based on that shown in the drawings, and are merely for convenience in describing the utility model and simplifying the description, and do not indicate or imply that the device or element in question must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. The utility model is further illustrated by the following examples in conjunction with the accompanying drawings:
when the reverse osmosis and nanofiltration membrane wastewater treatment system is used for treating high-salt high-concentration organic wastewater for a long time, membrane elements are easy to be blocked, and in order to facilitate efficient cleaning of the membrane elements, as shown in fig. 2, the embodiment provides a chemical cleaning system for the high-organic blocking membrane elements, which mainly comprises a reverse osmosis water inlet filter 1, a reverse osmosis first section 2, a reverse osmosis second section 3, a cleaning water tank 4, a cleaning water pump 5, a high-pressure pump 6 and a booster pump 7. The reverse osmosis water inlet filter 1, the reverse osmosis first section 2 and the reverse osmosis second section 3 are sequentially communicated end to end according to the flowing direction of wastewater, a liquid outlet of the reverse osmosis second section 3 is communicated with a concentrated water discharge pipe 9, and a concentrated water discharge valve 10 is arranged on the concentrated water discharge pipe 9. A high-pressure pump water inlet control valve 8, a high-pressure pump 6 and a reverse osmosis water inlet control valve 11 are arranged between the reverse osmosis water inlet filter 1 and the reverse osmosis first section 2, a fresh water inlet pipe 12 is connected in parallel at the liquid inlet of the high-pressure pump 6, a fresh water inlet valve 13 is arranged on the fresh water inlet pipe 12, and a booster water inlet valve 14, a booster pump 7 and a booster water outlet valve 15 are arranged between the reverse osmosis first section 2 and the reverse osmosis second section 3.
The liquid outlet of the cleaning water tank 4 is sequentially communicated with a cleaning water pump 5 and a cleaning filter, liquid inlets of the reverse osmosis first section 2 and the reverse osmosis second section 3 are respectively communicated through a first section cleaning water inlet valve 16 and a second section cleaning water inlet valve 17 which are matched with pipelines, liquid outlets of the reverse osmosis first section 2 and the reverse osmosis second section 3 are respectively matched with a liquid return port of the cleaning water tank 4 through a first section cleaning water outlet valve 18 and a second section cleaning water outlet valve 19 which are matched with pipelines, and a water drain pipe (not shown in the figure) is further arranged at the bottom of the cleaning water tank 4.
The specific working process of the high organic pollution blocking film element chemical cleaning system in the embodiment is as follows:
firstly, carrying out high-pressure flushing on the first reverse osmosis section 2 and the second reverse osmosis section 3 by adopting fresh water;
the first-stage cleaning water inlet valve 16, the second-stage cleaning water inlet valve 17, the first-stage cleaning water outlet valve 18, the second-stage cleaning water outlet valve 19 and the high-pressure pump water inlet control valve 8 are closed, the reverse osmosis water inlet control valve 11, the fresh water inlet valve 13, the booster water inlet valve 14, the booster water outlet valve 15 and the concentrated water discharge valve 10 are opened, the high-pressure pump 6 is started to perform high-pressure flushing, and flushing water passes through the membrane surfaces of the first reverse osmosis section 2 and the second reverse osmosis section 3 at a high flow rate, so that the purposes of cleaning the softened and loosened pollutants on the membrane surfaces are achieved;
then, adding chemical cleaning agent into the cleaning water tank 4 to circularly clean the reverse osmosis first section 2 and the reverse osmosis second section 3;
the first-stage cleaning water inlet valve 16, the second-stage cleaning water inlet valve 17, the first-stage cleaning water outlet valve 18 and the second-stage cleaning water outlet valve 19 are opened, the reverse osmosis water inlet control valve 11, the booster water inlet valve 14, the booster water outlet valve 15 and the concentrated water discharge valve 10 are closed, the cleaning water pump 5 is started, cleaning water enters membrane elements in the first reverse osmosis stage 2 and the second reverse osmosis stage 3 for cleaning under the action of the cleaning water pump 5, and then enters the cleaning water tank 4 again for circularly cleaning the membrane elements in the first reverse osmosis stage 2 and the second reverse osmosis stage 3.
In the embodiment, 500-1000ppm of non-oxidative bactericide (isothiazolinone derivative) is added into the cleaning water tank 4 to sterilize and algae-killing clean the membrane elements in the first reverse osmosis section 2 and the second reverse osmosis section 3, so that the usage amount of alkaline cleaning agent is reduced, and the damage to the polymer material (poly piperazine) of the desalination layer of the nanofiltration membrane element is reduced; after the liquid in the cleaning water tank 4 is discharged, 200-500ppm sodium tripolyphosphate and 20-50ppm EDTA (4 Na) are added to be matched with alkaline cleaning, so that organic matters among the membranes are effectively removed; and after the liquid in the cleaning water tank 4 is discharged, the industrial hydrochloric acid is added to effectively remove the inorganic salt structure on the surface of the membrane.
According to the utility model, different cleaning agents can be added into the cleaning water tank in batches, under the action of the cleaning water pump, the cleaning water enters the membrane elements in the first reverse osmosis section and the second reverse osmosis section for cleaning, and then enters the cleaning water tank again for circularly cleaning the membrane elements in the first reverse osmosis section and the second reverse osmosis section, so that the cleaning efficiency is greatly improved.
Claims (5)
1. The chemical cleaning system for the high-organic sewage blocking membrane element is characterized by comprising a reverse osmosis water inlet filter, a reverse osmosis first section, a reverse osmosis second section and a cleaning water tank, wherein the reverse osmosis water inlet filter, the reverse osmosis first section and the reverse osmosis second section are sequentially communicated end to end according to the flowing direction of wastewater, a high-pressure pump is arranged between the reverse osmosis water inlet filter and the reverse osmosis first section, and a booster pump is arranged between the reverse osmosis first section and the reverse osmosis second section;
the liquid outlet of the cleaning water tank is sequentially communicated with a cleaning water pump and a cleaning filter, the liquid outlets of the cleaning filter are respectively communicated with the liquid inlets of the first reverse osmosis section and the second reverse osmosis section, and the liquid outlets of the first reverse osmosis section and the second reverse osmosis section are both communicated with the liquid return port of the cleaning water tank;
and a fresh water inlet pipe is further arranged at the liquid inlet of the high-pressure pump.
2. The high organic fouling membrane element chemical cleaning system according to claim 1, wherein the liquid outlet of the cleaning filter is communicated with the liquid inlets of the first reverse osmosis section and the second reverse osmosis section through a first cleaning water inlet valve and a second cleaning water inlet valve matched pipeline respectively, and the liquid outlets of the first reverse osmosis section and the second reverse osmosis section are communicated with the liquid return port of the cleaning pool through a first cleaning water valve and a second cleaning water outlet valve matched pipeline respectively.
3. The high organic fouling membrane element chemical cleaning system according to claim 2, wherein the liquid outlet of the reverse osmosis two-stage is further provided with a concentrated water discharge pipe, and the concentrated water discharge pipe is provided with a concentrated water discharge valve.
4. A high organic fouling membrane element chemical cleaning system according to any one of claims 1-3, characterized in that the liquid outlet of the high pressure pump is provided with a reverse osmosis water inlet control valve, the liquid inlet and the liquid outlet of the booster pump are respectively provided with a booster water inlet valve and a booster water outlet valve, and the fresh water inlet valve is provided with a fresh water inlet valve.
5. A high organic fouling membrane element chemical cleaning system according to any one of claims 1-3, wherein non-oxidizing bactericides or industrial hydrochloric acid can be added in the cleaning water tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223330147.6U CN218924326U (en) | 2022-12-13 | 2022-12-13 | High organic sewage blocking film element chemical cleaning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223330147.6U CN218924326U (en) | 2022-12-13 | 2022-12-13 | High organic sewage blocking film element chemical cleaning system |
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| Publication Number | Publication Date |
|---|---|
| CN218924326U true CN218924326U (en) | 2023-04-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223330147.6U Active CN218924326U (en) | 2022-12-13 | 2022-12-13 | High organic sewage blocking film element chemical cleaning system |
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| CN (1) | CN218924326U (en) |
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- 2022-12-13 CN CN202223330147.6U patent/CN218924326U/en active Active
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