CN220684921U - Membrane system dense water defluorination integrated device - Google Patents
Membrane system dense water defluorination integrated device Download PDFInfo
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- CN220684921U CN220684921U CN202322296952.XU CN202322296952U CN220684921U CN 220684921 U CN220684921 U CN 220684921U CN 202322296952 U CN202322296952 U CN 202322296952U CN 220684921 U CN220684921 U CN 220684921U
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- tank
- defluorination
- water
- reaction
- membrane
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 113
- 239000012528 membrane Substances 0.000 title claims abstract description 55
- 238000006115 defluorination reaction Methods 0.000 title claims abstract description 48
- 238000006243 chemical reaction Methods 0.000 claims abstract description 25
- 238000001471 micro-filtration Methods 0.000 claims abstract description 24
- 238000001556 precipitation Methods 0.000 claims abstract description 12
- 239000012141 concentrate Substances 0.000 claims abstract description 11
- 229910052731 fluorine Inorganic materials 0.000 claims abstract description 9
- 239000011737 fluorine Substances 0.000 claims abstract description 9
- 238000004519 manufacturing process Methods 0.000 claims abstract description 7
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims abstract description 6
- 238000004140 cleaning Methods 0.000 claims description 10
- 238000011001 backwashing Methods 0.000 claims description 5
- 239000003814 drug Substances 0.000 claims description 5
- 238000004062 sedimentation Methods 0.000 claims description 5
- 238000005192 partition Methods 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- -1 silicon ions Chemical class 0.000 abstract description 13
- 239000003795 chemical substances by application Substances 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 5
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 abstract description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052782 aluminium Inorganic materials 0.000 abstract description 2
- 150000002500 ions Chemical class 0.000 abstract description 2
- 239000011777 magnesium Substances 0.000 abstract description 2
- 229910052749 magnesium Inorganic materials 0.000 abstract description 2
- 229910052710 silicon Inorganic materials 0.000 abstract description 2
- 239000010703 silicon Substances 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 10
- 239000010802 sludge Substances 0.000 description 10
- 239000002351 wastewater Substances 0.000 description 6
- 229910052719 titanium Inorganic materials 0.000 description 5
- 239000010936 titanium Substances 0.000 description 5
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 4
- 159000000007 calcium salts Chemical class 0.000 description 4
- 238000004939 coking Methods 0.000 description 4
- 238000001704 evaporation Methods 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 3
- 238000001223 reverse osmosis Methods 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 2
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000000909 electrodialysis Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910000040 hydrogen fluoride Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000011780 sodium chloride Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 1
- 229910001634 calcium fluoride Inorganic materials 0.000 description 1
- 229910001424 calcium ion Inorganic materials 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 239000008235 industrial water Substances 0.000 description 1
- 229910001425 magnesium ion Inorganic materials 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000010517 secondary reaction Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The utility model discloses a membrane system concentrate defluorination integrated device, which comprises a raw water tank, wherein the integrated device comprises a raw water tank, a secondary defluorination reaction tank, a precipitation concentration device, a reaction water outlet tank, a tubular micro-filtration membrane device, a water production tank, a dosing system, a valve, an instrument and an electric control system; the raw water tank is connected with a raw water pump, the raw water pump is connected with a secondary defluorination reaction tank, and the secondary defluorination reaction tank is connected with a reaction water outlet tank; the reaction water outlet tank is connected with a precipitation concentration device; a circulating pump is arranged between the reaction water outlet tank and the tubular micro-filtration device; the second-stage defluorination reaction tank is connected with a dosing device. The device has the characteristics of quick response, high fluorine removal efficiency and good water outlet effect. The high-efficiency defluorinating agent removes fluorine without adding ions which have important influence on membrane systems such as aluminum, magnesium, silicon ions and the like.
Description
Technical Field
The utility model relates to the field of wastewater treatment, in particular to a membrane system concentrated water defluorination integrated device.
Background
Along with the continuous upgrading of ecological civilization construction and industry, the total water resource consumption and the intensity are increasingly strictly controlled, and reclaimed water recycling and wastewater zero discharge become basic requirements of industrial enterprises. The admission condition of coking industry (2008 edition) requires that the phenol-cyanogen wastewater must be recycled and not discharged, and the construction of phenol-cyanogen wastewater zero discharge engineering is started in China. The domestic coking wastewater 'zero discharge' project advanced treatment basically adopts a membrane technology to realize the recycling of 70% industrial water, and the other 30% concentrated water is used harmlessly.
The zero emission of coking wastewater still has a certain problem in actual operation, wherein fluoride ions are important factors influencing the stable operation of a zero emission system. The coking wastewater has high fluorine concentration, after membrane concentration, fluoride ions reach more than 100mg/l, and enter subsequent electrodialysis treatment, so that the fluoride ions have high concentration, calcium fluoride is generated under the condition of low calcium and magnesium ion concentration, membrane scaling is caused, and in addition, the fluoride ions penetrate through the membrane and enter polar water, so that the service life of an electrode can be seriously influenced. The electrodialysis concentrated water with high concentration of fluoride ions enters a sodium chloride evaporation crystallizer, the sodium chloride evaporation crystallizer adopts titanium materials, a compact and stable oxide film is formed on the surface of the titanium materials to prevent corrosion, fluoride and hydrogen ions are combined to form hydrogen fluoride, and the hydrogen fluoride is preferentially adsorbed on the surface of the titanium and combined with the titanium ions to form soluble fluoride, so that titanium is pitted, and the service life of the evaporation crystallizer is influenced.
Disclosure of Invention
Therefore, the technical problem to be solved by the utility model is to provide a medicament technology and equipment for efficiently removing fluoride ions in reverse osmosis concentrated water without influencing a subsequent membrane system.
The technical scheme of the utility model is that the membrane system concentrate defluorination integrated device comprises a raw water tank, wherein the integrated device comprises a raw water tank, a secondary defluorination reaction tank, a precipitation concentration device, a reaction water outlet tank, a tubular microfiltration membrane device, a water production tank, a dosing device, a valve, an instrument and an electric control system;
the raw water tank is connected with a raw water pump, the raw water pump is connected with a secondary defluorination reaction tank, and the secondary defluorination reaction tank is connected with a reaction water outlet tank; the reaction water outlet tank is connected with a precipitation concentration device; the reaction water outlet tank is communicated with the tubular micro-filtration membrane device through a pipeline, and a circulating pump is arranged on the communicating pipeline; the tubular microfiltration membrane device is communicated with the water producing tank;
the dosing device comprises a dosing box and a dosing pump; the dosing device is connected with the secondary defluorination reaction tank through a pipeline.
The integrated device is applied to the pretreatment process of reverse osmosis concentrated water entering a zero emission system.
The integrated device is characterized in that the original water tank is used for collecting water into the water tank, the water inflow is controlled by the liquid level meter, and the parts are respectively linked with the water inflow pump.
The membrane system concentrated water defluorination integrated device is characterized in that the dosing device 11 is connected with a metering pump; the second-stage defluorination reaction tank is divided into 2 grids, a middle partition plate is arranged between the two grids, the upper part of the middle partition plate is provided with a hole, water enters from the lower part of the first grid, and water exits from the lower part of the second grid. Each grid is provided with a stirring device.
The water in the second-stage defluorination reaction tank is pumped from the raw water tank, and the metering pump is used for metering the dosage and is arranged in the dosing device 11. The tubular microfiltration membrane system is provided with a cleaning device.
The membrane system dense water defluorination integrated device is characterized in that an inclined pipe section is arranged on the upper portion of the precipitation concentration device, and a sludge discharge port is arranged at the bottom of the precipitation concentration device. The sedimentation concentration device adopts a vertical flow sedimentation tank, so that the sedimentation separation effect is improved.
The membrane system dense water defluorination integrated device is characterized in that the reaction water outlet tank 4 is a conical tank body and is provided with a liquid level control device. The reaction water outlet tank is connected with the tubular membrane system through a circulating pump, and a sludge discharge port is arranged at the bottom of the reaction water outlet tank and is connected with a sludge pump.
The membrane system concentrated water defluorination integrated device comprises a circulating pump, a cleaning pump, a tubular microfiltration host and an air compressor.
Further, the tubular microfiltration host comprises a tubular microfiltration membrane, a cleaning device, a pneumatic valve and a flowmeter.
Further, the pneumatic valve comprises a water inlet pneumatic valve, a backwashing water inlet pneumatic valve, a chemical cleaning pneumatic valve and a water production pneumatic valve. The pneumatic valve refers to the pneumatic valve of the tube type micro-filtration host. The water inlet pneumatic valve is arranged on a water inlet pipeline of the rear tubular microfiltration of the circulating pump, and the water inlet valve is controlled to be closed when the membrane component is cleaned; the backwashing valve is arranged on a pipeline of the tubular microfiltration membrane assembly connected with the water producing tank, and backwashing is carried out by utilizing the water of the water producing tank; the chemical cleaning pneumatic valve is connected to the backwashing dosing pipe, namely a cleaning medicine tank of the pipe filter main machine belt is connected with a pipe type membrane; the water producing pneumatic valve is arranged on a water producing pipe connected with the pipe type membrane and the water producing tank.
The membrane system dense water defluorination integrated device comprises a dosing tank, a dosing pump and a stirrer.
The membrane system dense water defluorination integrated device is characterized in that a plurality of dosing systems are arranged. Such as calcium salt dosing device, defluorinating agent dosing device, etc., is provided with a stirrer for stirring the solid medicament, and the required concentration is achieved by stirring the clear water and the solid medicament in proportion.
The on-line instrument is provided with a high-low voltage switch, an on-line pH meter, an on-line pressure sensor and an on-line flowmeter respectively. The function of the on-line meter is to provide control signal feedback to the system.
The dosing device is matched with a dosing box, a dosing pump and a stirrer, the volume of the dosing box is selectable, and the dosing pumps (50L, 100L, 200L and the like) are respectively adjustable, and the range is 0-80L/H.
The integrated device electric control system comprises a PLC module, an electric original device, a touch screen, a control cabinet and the like. The touch screen can check the technological process and the running condition of equipment, has special interfaces for setting technological parameters and has special interfaces for checking alarm records. The control cabinet is provided with a start button, a stop button, a power indicator lamp, an operation indicator lamp, an audible and visual alarm and a scram button of the whole system. The main function is to control the start and stop of the device.
The beneficial effects are that:
the utility model relates to a zero-emission process membrane system dense water defluorination integrated device. The research equipment is used for removing the fluorine ions in the membrane system concentrate in the zero-emission process, so that the influence of the fluorine ions on the subsequent process and equipment is reduced. The integrated device is a complete set of automation equipment. The device has the characteristics of quick response, high fluorine removal efficiency and good water outlet effect. The high-efficiency defluorinating agent removes fluorine without adding ions which have important influence on membrane systems such as aluminum, magnesium, silicon ions and the like.
Drawings
FIG. 1 is a layout diagram of a concentrated water defluorination integrated device of a zero emission process membrane system.
FIG. 2 is a process flow of the concentrated water defluorination integrated device of the zero emission process membrane system.
Wherein, 1-an original water tank; 2-an original water pump; a 3-second-stage defluorination reaction tank; 4-reaction water outlet tank; 5-a precipitation concentration device; 6-a circulating pump; 7-a sludge pump; 8-a tubular microfiltration membrane host; 9-a cleaning pump; 10-a control cabinet; 11-a dosing device; 12-water producing tank.
Detailed Description
The present utility model will now be described more fully hereinafter by way of example with reference to the accompanying drawings, in which the utility model is thus not limited to the embodiments.
The zero-emission process membrane system concentrated water defluorination integrated device can realize the efficient removal of fluorine ions, and has good separation effect after passing through the tubular microfiltration device and small influence on the subsequent membrane system. The device mainly comprises a raw water tank 1, a secondary defluorination reaction tank 3, a precipitation concentration device 5, a reaction water outlet tank 4, a tubular micro-filtration membrane device, a water production tank 12, a dosing system, a valve, an instrument, an electric control system and the like.
After the device is installed on site as shown in fig. 1, a pretreatment working section suitable for reverse osmosis concentrated water to enter a zero-discharge device or a concentrated water defluorination treatment working section after a zero-discharge membrane system is concentrated is installed. The device comprises a detection raw water tank, a secondary defluorination reaction tank, a precipitation concentration device, a reaction water outlet tank, a tubular micro-filtration membrane device, a water production tank, a dosing system, a valve, an instrument, an electric control system and the like, so that the normal use state of the device is ensured;
connecting device water inlet and outlet pipeline, when the device is operated: after entering a raw water tank 1 and being uniformly mixed, concentrated water enters a secondary defluorination reaction tank 3 through a raw water pump 2, wherein the secondary defluorination reaction tank 3 is provided with two grids, one grid is one level and is divided into two levels in total, calcium salt is added into the primary reaction tank, the mixed water enters the secondary reaction tank (the secondary defluorination reaction tank 3 is divided into 2 grids, the first grid is the first level and is added with calcium salt, the 2 nd grid is the second level and is added with defluorination agent), the mixed water enters a reaction water outlet tank 4 after being fully mixed and reacted, and the reaction water outlet tank 4 is of a conical bottom structure. Correspondingly, the second-level defluorination reaction tank is connected with two sets of dosing devices, one set of dosing calcium salt and the other set of dosing defluorination agent. The circulating pump 6 pumps the water in the reaction water outlet tank 4 into the tubular micro-filtration membrane device, and the filtered water enters the water producing tank 12. The filtered mud-containing concentrated water flows back to the reaction water outlet tank 4, and when the sludge in the reaction water outlet tank 4 reaches a certain sludge amount after continuous concentration treatment, part of sludge can be discharged to reduce the sludge concentration. The discharged sludge is further concentrated and then treated by a sludge pump 7 into a precipitation concentration device 5, and can be directly subjected to filter pressing treatment by a filter press.
After the device runs normally, the device is switched to an automatic state, and the device is automatically controlled to run by an on-line instrument and a PLC.
The integrated device is simple and convenient to operate and maintain, the occupied area of the device is reduced, and the volume space is saved. The method has a more stable treatment effect, does not need to replace easily saturated filler, and does not worry about blocking and pollution to a subsequent membrane system.
The embodiments of the present utility model are described above. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the principles and spirit of the utility model, but such changes and modifications fall within the scope of the utility model.
Claims (9)
1. The utility model provides a membrane system dense water removes fluorine integrated device, includes former water tank, its characterized in that: the integrated device comprises a raw water tank, a secondary defluorination reaction tank, a precipitation concentration device, a reaction water outlet tank, a tubular micro-filtration membrane device, a water production tank, a dosing device, a valve, a meter and an electric control system;
the raw water tank is connected with a raw water pump, the raw water pump is connected with a secondary defluorination reaction tank, and the secondary defluorination reaction tank is connected with a reaction water outlet tank; the reaction water outlet tank is connected with a precipitation concentration device; the reaction water outlet tank is communicated with the tubular micro-filtration membrane device through a pipeline, and a circulating pump is arranged on the communicating pipeline; the tubular microfiltration membrane device is communicated with the water producing tank;
the dosing device comprises a dosing box and a dosing pump; the dosing device is connected with the secondary defluorination reaction tank through a pipeline.
2. The membrane system concentrate defluorination integrated device according to claim 1, wherein: the dosing device is connected with a metering pump; the second-stage defluorination reaction tank is divided into 2 grids, a middle partition plate is arranged between the two grids, the upper part of the middle partition plate is provided with a hole, water enters from the lower part of the first grid, and water exits from the lower part of the second grid.
3. The membrane system concentrate defluorination integrated device according to claim 1, wherein: the upper part of the sedimentation concentration device is provided with an inclined pipe section, and the bottom of the sedimentation concentration device is provided with a mud discharge port.
4. The membrane system concentrate defluorination integrated device according to claim 1, wherein: the reaction water outlet tank is a conical tank body and is provided with a liquid level control device.
5. The membrane system concentrate defluorination integrated device according to claim 1, wherein: the tubular microfiltration membrane device comprises a circulating pump, a cleaning pump, a tubular microfiltration host and an air compressor.
6. The membrane system concentrate defluorination integrated device according to claim 5, wherein: the tubular microfiltration host comprises a tubular microfiltration membrane, a cleaning device, a pneumatic valve and a flowmeter.
7. The membrane system concentrate defluorination integrated device according to claim 6, wherein: the pneumatic valve comprises a water inlet pneumatic valve, a backwashing water inlet pneumatic valve, a chemical cleaning pneumatic valve and a water production pneumatic valve.
8. The membrane system concentrate defluorination integrated device according to claim 1, wherein: the dosing device further comprises a stirrer.
9. The membrane system concentrate defluorination integrated device according to claim 8, wherein: the medicine adding devices are multiple.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322296952.XU CN220684921U (en) | 2023-08-24 | 2023-08-24 | Membrane system dense water defluorination integrated device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322296952.XU CN220684921U (en) | 2023-08-24 | 2023-08-24 | Membrane system dense water defluorination integrated device |
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| Publication Number | Publication Date |
|---|---|
| CN220684921U true CN220684921U (en) | 2024-03-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322296952.XU Active CN220684921U (en) | 2023-08-24 | 2023-08-24 | Membrane system dense water defluorination integrated device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220684921U (en) |
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2023
- 2023-08-24 CN CN202322296952.XU patent/CN220684921U/en active Active
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