CN114349141A - A recovery processing system for fluorine-containing coating waste water - Google Patents
A recovery processing system for fluorine-containing coating waste water Download PDFInfo
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- CN114349141A CN114349141A CN202111571522.3A CN202111571522A CN114349141A CN 114349141 A CN114349141 A CN 114349141A CN 202111571522 A CN202111571522 A CN 202111571522A CN 114349141 A CN114349141 A CN 114349141A
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Abstract
The invention relates to a recovery processing system for fluorine-containing paint wastewater, which comprises a main pipeline, wherein a first section measuring device, a middle section detecting device and a tail section detecting device are sequentially arranged on the main pipeline from front to back, a primary dosing precipitation device is arranged on the main pipeline between the first section measuring device and the middle section detecting device, a secondary dosing precipitation device is arranged on the main pipeline between the middle section detecting device and the tail section detecting device, the dosing amount of the primary dosing precipitation device is adjusted according to the difference value of an initial measured value and a middle measured value, and the dosing amount of the secondary dosing precipitation device is adjusted according to the difference value of the middle measured value and a tail measured value. The invention has the following beneficial effects: the dosage of the primary dosing precipitation device is adjusted according to the difference value between the initial measurement value and the middle measurement value, and the dosage of the secondary dosing precipitation device is adjusted according to the difference value between the middle measurement value and the tail end measurement value, so that the dosing is accurate, and the use requirement can be met.
Description
Technical Field
The invention relates to a recovery treatment system for fluorine-containing coating wastewater, and belongs to the technical field of wastewater treatment equipment.
Background
At present, the adopted fluorine-containing wastewater treatment technology is simple primary physical and chemical precipitation, fluoride ions in wastewater are converted into calcium fluoride while the pH value of the wastewater is adjusted by means of lime milk, the dosage of lime is not specially adjusted according to the dosage of the fluoride ions, the dosage is not matched with raw water, and the phenomenon of insufficient dosage or excessive dosage occurs.
If the dosage is excessive, the dosage is large, the produced sludge is large, the operation cost is high, and if the dosage is insufficient, the reaction efficiency is low, and the removal rate of the fluorinion can only reach about 90 percent.
Disclosure of Invention
According to the defects in the prior art, the technical problems to be solved by the invention are as follows: in order to solve one of the problems, a recycling treatment system for fluorine-containing coating wastewater is provided.
The invention discloses a recovery processing system for fluorine-containing coating wastewater, which is characterized in that: comprises a main pipeline, wherein a first section measuring device, a middle section detecting device and a tail section detecting device are sequentially arranged on the main pipeline from front to back, a primary dosing precipitation device is arranged on the main pipeline between the first section measuring device and the middle section detecting device, a secondary dosing precipitation device is arranged on the main pipeline between the middle section detecting device and the tail section detecting device,
the first-stage measuring device is used for measuring the concentration of fluorine ions newly injected into the fluorine-containing wastewater in real time to obtain an initial measured value;
the primary dosing and precipitating device is used for adding a medicament into the main pipeline for the first time and carrying out primary fluorine ion removal treatment on the fluorine-containing wastewater in the main pipeline by using the medicament;
the middle section detection device is used for measuring the concentration of the fluorine ions of the fluorine-containing wastewater subjected to primary dosing in real time so as to obtain an intermediate measurement value;
the secondary dosing and precipitating device is used for adding a medicament into the main pipeline again and carrying out secondary fluorine ion removal treatment on the fluorine-containing wastewater in the main pipeline by using the medicament;
the tail section detection device is used for measuring the concentration of the fluorine ions of the fluorine-containing wastewater after secondary dosing in real time so as to obtain a tail end measured value;
and adjusting the medicine supply amount of the primary medicine-adding precipitation device according to the difference value between the initial measurement value and the middle measurement value, and adjusting the medicine supply amount of the secondary medicine-adding precipitation device according to the difference value between the middle measurement value and the tail end measurement value.
Preferably, once add medicine sediment device includes the precipitation tank body, it is provided with the center tube to cover to run through on the precipitation tank body, the upper end of center tube extends to the precipitation tank body outside, and the lower extreme extends to the internal bottom of precipitation tank, the center tube upper end is sealed, and the lower extreme opening, nearly blind end are provided with the baffle, go up the baffle and form malleation wind cavity with the center tube, be provided with the connecting pipe that is linked together with malleation wind cavity on the outer wall of center tube, be connected through the connecting pipe and medicament pneumatic conveying device's discharge gate, be provided with the pencil of sending that runs through the upper baffle on the upper baffle, be provided with the inside and outside blast pipe of intercommunication center tube on the center tube of upper baffle below, still be provided with the bleed valve on the roof of the precipitation tank body.
Preferably, the landing leg is installed to the bottom of the precipitation tank body, the landing leg makes and has the clearance of reserving between the bottom plate of the precipitation tank body and the ground, and the bottom plate mid-mounting of the precipitation tank body has gear motor, the last vertical (mixing) shaft of installing of gear motor, the (mixing) shaft extends to the intraductal middle part of center to install the stirring rake at the tip.
Preferably, the device further comprises a liquid supply pipe, the liquid supply pipe is connected with the upstream main pipeline, and the other end of the liquid supply pipe penetrates through the blind end of the central pipe and the upper partition plate and extends to the position below the upper partition plate.
Preferably, the medicament is powder, the addition amount of calcium hydroxide in the medicament is 890-1250 mg/L, the addition amount of a high-efficiency flocculating agent PAM is 12-15 ppm, and the first compound medicament improves the sedimentation performance of calcium fluoride and improves the solid-liquid separation effect of a calcium hydroxide precipitation unit.
Preferably, the first section measuring device, the middle section detecting device and the tail section detecting device are all online monitoring devices which transmit the detected content of the fluorine ions in the water to a computer end and control the medicament air conveying device to work.
Preferably, the inlet of the main pipeline is connected with a feeding pump.
Preferably, after the reaction is finished, the concentration of fluorine ions in the outlet water at the tail end of the main pipeline is less than 13mg/L, and the removal efficiency of the fluorine ions is more than 99.8%.
Preferably, the air release valve is an electric control valve and is electrically connected with a computer terminal.
Preferably, one side of the bottom of the settling tank body is a slag outlet.
Compared with the prior art, the invention has the following beneficial effects:
the invention relates to a recovery processing system for fluorine-containing coating wastewater, which comprises a first-stage measuring device, a second-stage measuring device and a third-stage measuring device, wherein the first-stage measuring device is used for measuring the concentration of fluorine ions newly injected into the fluorine-containing wastewater in real time so as to obtain an initial measured value; the primary dosing and precipitating device is used for adding a medicament into the main pipeline for the first time and carrying out primary fluorine ion removal treatment on the fluorine-containing wastewater in the main pipeline by using the medicament; the middle section detection device is used for measuring the concentration of the fluorine ions of the fluorine-containing wastewater subjected to primary dosing in real time so as to obtain an intermediate measurement value; the secondary dosing and precipitating device is used for adding a medicament into the main pipeline again and carrying out secondary fluorine ion removal treatment on the fluorine-containing wastewater in the main pipeline by using the medicament; the tail section detection device is used for measuring the concentration of the fluorine ions of the fluorine-containing wastewater after secondary dosing in real time so as to obtain a tail end measured value; the dosage of the primary dosing precipitation device is adjusted according to the difference value between the initial measurement value and the middle measurement value, and the dosage of the secondary dosing precipitation device is adjusted according to the difference value between the middle measurement value and the tail end measurement value, so that the dosing is accurate, and the use requirement can be met.
According to the recovery treatment system for fluorine-containing coating wastewater, the primary dosing and precipitating device is of a novel design, and the dosing amount is high, so that the dosing accuracy is high, the use requirement can be met, and the reaction is more sufficient.
Drawings
In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings that are needed in the detailed description of the invention or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic structural diagram of the primary dosing precipitation device.
In the figure: 1. the device comprises a main pipeline 2, a first-section measuring device 3, a middle-section detecting device 4, a tail-section detecting device 5, a primary dosing precipitation device 5.1, a precipitation tank body 5.2, a medicament air conveying device 5.3, supporting legs 5.4, a speed reducing motor 5.5, a stirring shaft 5.6, a stirring paddle 5.7, a central pipe 5.8, an upper partition plate 5.9, a medicament conveying pipe 5.10, an exhaust pipe 5.11, an air release valve 5.12, a liquid supply pipe 6 and a secondary dosing precipitation device.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
the present invention is further illustrated by the following specific examples, which are not intended to limit the scope of the invention, and any modifications, equivalents, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Examples
As shown in fig. 1-2, the system for recycling fluorine-containing coating wastewater comprises a main pipe 1, wherein the main pipe 1 is sequentially provided with a first section measuring device 2, a middle section detecting device 3 and a tail section detecting device 4 from front to back, a primary dosing and precipitating device 5 is installed on the main pipe 1 between the first section measuring device 2 and the middle section detecting device 3, a secondary dosing and precipitating device 6 is installed on the main pipe 1 between the middle section detecting device 3 and the tail section detecting device 4, and the first section measuring device 2 is used for measuring the concentration of fluorine ions newly injected into fluorine-containing wastewater in real time to obtain an initial measured value; the primary dosing and precipitating device 5 is used for adding a medicament into the main pipeline 1 for the first time and carrying out primary fluorine ion removal treatment on the fluorine-containing wastewater in the main pipeline 1 by using the medicament; the middle section detection device 3 is used for measuring the fluorine ion concentration of the fluorine-containing wastewater subjected to primary dosing in real time so as to obtain an intermediate measurement value; the secondary dosing and precipitating device 6 is used for adding a medicament into the main pipeline 1 again and carrying out secondary fluorine ion removal treatment on the fluorine-containing wastewater in the main pipeline 1 by using the medicament; the tail section detection device 4 is used for measuring the concentration of the fluorine ions in the fluorine-containing wastewater after secondary dosing in real time so as to obtain a tail end measured value; the medicine supply amount of the primary medicine-adding precipitation device 5 is adjusted according to the difference value between the initial measurement value and the middle measurement value, and the medicine supply amount of the secondary medicine-adding precipitation device 6 is adjusted according to the difference value between the middle measurement value and the tail end measurement value.
In this embodiment, the primary medicine adding precipitation device 5 includes a precipitation tank 5.1, a central tube 5.7 is arranged on an upper cover of the precipitation tank 5.1 in a penetrating manner, the upper end of the central tube 5.7 extends to the outer side of the precipitation tank 5.1, the lower end of the central tube extends to the bottom of the precipitation tank 5.1, the upper end of the central tube 5.7 is closed, the lower end of the central tube is open, an upper partition plate 5.8 is arranged near the closed end, the upper partition plate 5.8 and the central tube 5.7 form a positive pressure air chamber, a connecting tube communicated with the positive pressure air chamber is arranged on the outer wall of the central tube 5.7 and is connected with a discharge port of a medicine air supply device 5.2 through the connecting tube, a medicine supply tube 5.9 penetrating through the upper partition plate 5.8 is arranged on the upper partition plate 5.8, an exhaust tube 5.10 communicating the inside and outside of the central tube 5.7 is arranged on the central tube 5.7 below the upper partition plate 5.8, and an air release valve 5.11 is further arranged on a top plate of the precipitation tank 5.1; the bottom of the sedimentation tank body 5.1 is provided with a support leg 5.3, the support leg 5.3 enables a reserved gap to be reserved between the bottom plate of the sedimentation tank body 5.1 and the ground, the middle part of the bottom plate of the sedimentation tank body 5.1 is provided with a speed reducing motor 5.4, the speed reducing motor 5.4 is provided with a vertical stirring shaft 5.5, the stirring shaft 5.5 extends to the inner middle part of a central pipe 5.7, and the end part of the stirring shaft is provided with a stirring paddle 5.6; the device also comprises a liquid supply pipe 5.12, wherein the liquid supply pipe 5.12 is connected with the upstream main pipeline 1, and the other end of the liquid supply pipe penetrates through the blind end of the central pipe 5.7 and the upper partition plate 5.8 and extends to the position below the upper partition plate 5.8; the first compound agent improves the sedimentation performance of calcium fluoride and improves the solid-liquid separation effect of a calcium hydroxide precipitation unit, wherein the addition amount of calcium hydroxide in the agent is 1000mg/L, the addition amount of a high-efficiency flocculating agent PAM is 15 ppm; the first section measuring device 2, the middle section detecting device 3 and the tail section detecting device 4 are all online monitoring devices, and transmit the detected content of the fluorine ions in the water to a computer end, and control the medicament air conveying device 5.2 to work; the inlet of the main pipeline 1 is connected with a feeding pump; after the reaction is finished, the concentration of the fluorine ions in the water outlet at the tail end of the main pipeline 1 is below 13mg/L, and the removal efficiency of the fluorine ions is more than 99.8%; the air release valve 5.11 is an electric control valve and is electrically connected with the computer end; one side of the bottom of the sedimentation tank body 5.1 is a slag outlet.
The working principle of the invention is as follows: the first-stage measuring device is used for measuring the concentration of fluorine ions newly injected into the fluorine-containing wastewater in real time to obtain an initial measured value; the primary dosing and precipitating device is used for adding a medicament into the main pipeline for the first time and carrying out primary fluorine ion removal treatment on the fluorine-containing wastewater in the main pipeline by using the medicament; the middle section detection device is used for measuring the concentration of the fluorine ions of the fluorine-containing wastewater subjected to primary dosing in real time so as to obtain an intermediate measurement value; the secondary dosing and precipitating device is used for adding a medicament into the main pipeline again and carrying out secondary fluorine ion removal treatment on the fluorine-containing wastewater in the main pipeline by using the medicament; the tail section detection device is used for measuring the concentration of the fluorine ions of the fluorine-containing wastewater after secondary dosing in real time so as to obtain a tail end measured value; the dosage of the primary dosing precipitation device is adjusted according to the difference value between the initial measurement value and the middle measurement value, and the dosage of the secondary dosing precipitation device is adjusted according to the difference value between the middle measurement value and the tail end measurement value, so that the dosing is accurate, and the use requirement can be met.
Once add medicine and deposit device 5 and adopt novel structure, waste water is held the inflow by the intaking of trunk line 1 through the feed pump, waste water passes through feed pipe 5.12 in the trunk line 1 and gets into center tube 5.7 (through bleed valve 5.11 displacement surface of water basically with last baffle 5.8 parallel and level), the medicament passes through medicament air-conveying device 5.2 wind simultaneously and send to in the center tube 5.7, the initial mixing of recombination department, and mix again under the effect of stirring rake 5.6, gaseous passing through blast pipe 5.10, bleed valve 5.11 discharges, gaseous flow in-process also has the mixing action (be used in the 5.1 upper portions of the precipitation tank body), fully react in the precipitation tank body 5.1 behind the medicament mixing, the solid residue deposits in the 5.1 bottom of the precipitation tank body, the supernatant flows into secondary precipitation device 6, it is the same with the theory of operation of once adding medicine precipitation device 5 to add medicine secondary precipitation device 6, no longer describe repeatedly.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. The utility model provides a recovery processing system for fluorine-containing paint waste water which characterized in that: comprises a main pipeline, wherein a first section measuring device, a middle section detecting device and a tail section detecting device are sequentially arranged on the main pipeline from front to back, a primary dosing precipitation device is arranged on the main pipeline between the first section measuring device and the middle section detecting device, a secondary dosing precipitation device is arranged on the main pipeline between the middle section detecting device and the tail section detecting device,
the first-stage measuring device is used for measuring the concentration of fluorine ions newly injected into the fluorine-containing wastewater in real time to obtain an initial measured value;
the primary dosing and precipitating device is used for adding a medicament into the main pipeline for the first time and carrying out primary fluorine ion removal treatment on the fluorine-containing wastewater in the main pipeline by using the medicament;
the middle section detection device is used for measuring the concentration of the fluorine ions of the fluorine-containing wastewater subjected to primary dosing in real time so as to obtain an intermediate measurement value; the secondary dosing and precipitating device is used for adding a medicament into the main pipeline again and carrying out secondary fluorine ion removal treatment on the fluorine-containing wastewater in the main pipeline by using the medicament;
the tail section detection device is used for measuring the concentration of the fluorine ions of the fluorine-containing wastewater after secondary dosing in real time so as to obtain a tail end measured value;
and adjusting the medicine supply amount of the primary medicine-adding precipitation device according to the difference value between the initial measurement value and the middle measurement value, and adjusting the medicine supply amount of the secondary medicine-adding precipitation device according to the difference value between the middle measurement value and the tail end measurement value.
2. The recycling treatment system for fluorine-containing coating wastewater according to claim 1, characterized in that: the primary dosing and precipitating device comprises a precipitating tank body, a central tube is arranged on an upper cover of the precipitating tank body in a penetrating mode, the upper end of the central tube extends to the outer side of the precipitating tank body, the lower end of the central tube extends to the inner bottom of the precipitating tank body, the upper end of the central tube is sealed, an opening is formed in the lower end of the central tube, an upper partition plate is arranged close to the closed end of the central tube, the upper partition plate and the central tube form a positive pressure air cavity, a connecting tube communicated with the positive pressure air cavity is arranged on the outer wall of the central tube and connected with a discharge port of a medicament air conveying device through the connecting tube, a medicament conveying tube penetrating through the upper partition plate is arranged on the upper partition plate, an exhaust tube communicated with the inside and the outside of the central tube is arranged on the central tube below the upper partition plate, and a vent valve is further arranged on a top plate of the precipitating tank body.
3. The recycling treatment system for fluorine-containing coating wastewater according to claim 2, characterized in that: the landing leg is installed to the bottom of the precipitation tank body, the landing leg makes and has the reservation clearance between the bottom plate of the precipitation tank body and the ground, and the bottom plate mid-mounting of the precipitation tank body has gear motor, the last vertical (mixing) shaft of installing of gear motor, the (mixing) shaft extends to the intraductal middle part of center to install the stirring rake at the tip.
4. The recycling treatment system for fluorine-containing coating wastewater according to claim 3, characterized in that: the device is characterized by further comprising a liquid supply pipe, wherein the liquid supply pipe is connected with an upstream main pipeline, and the other end of the liquid supply pipe penetrates through the blind end of the central pipe and the upper partition plate and extends to the position below the upper partition plate.
5. The system for recycling fluorine-containing coating wastewater according to claim 4, wherein: the preparation is powdery, the addition amount of calcium hydroxide in the preparation is 890-1250 mg/L, the addition amount of a high-efficiency flocculating agent PAM is 12-15 ppm, the first compound preparation improves the sedimentation performance of calcium fluoride, and the solid-liquid separation effect of a calcium hydroxide precipitation unit is improved.
6. The recycling treatment system for fluorine-containing coating wastewater according to claim 5, characterized in that: the first section measuring device, the middle section detecting device and the tail section detecting device are all online monitoring devices, the detected content of the fluorine ions in the water is transmitted to a computer end, and the medicament air conveying device is controlled to work.
7. The recycling treatment system for fluorine-containing coating wastewater according to claim 6, characterized in that: the inlet of the main pipeline is connected with a feeding pump.
8. The recycling treatment system for fluorine-containing coating wastewater according to claim 7, characterized in that: after the reaction is finished, the concentration of the fluorine ions in the outlet water at the tail end of the main pipeline is 13mg/L, and the removal efficiency of the fluorine ions is more than 99.8%.
9. The recycling treatment system for fluorine-containing coating wastewater according to claim 8, characterized in that: the air release valve is an electric control valve and is electrically connected with the computer terminal.
10. The recycling treatment system for fluorine-containing coating wastewater according to claim 9, characterized in that: one side of the bottom of the sedimentation tank body is provided with a slag outlet.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111571522.3A CN114349141A (en) | 2021-12-21 | 2021-12-21 | A recovery processing system for fluorine-containing coating waste water |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111571522.3A CN114349141A (en) | 2021-12-21 | 2021-12-21 | A recovery processing system for fluorine-containing coating waste water |
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| CN114349141A true CN114349141A (en) | 2022-04-15 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1600411A (en) * | 2003-09-22 | 2005-03-30 | 张�林 | Mixer of liquid medicine |
| US20060006115A1 (en) * | 2004-07-08 | 2006-01-12 | Chen-Hung Hsien | Method of fluoride-containing wastewater treatment |
| CN203545755U (en) * | 2013-11-11 | 2014-04-16 | 嘉善绿野环保材料厂(普通合伙) | Variable-frequency intelligent water-treatment plant |
| CN104609523A (en) * | 2015-01-29 | 2015-05-13 | 中国航天空气动力技术研究院 | Pre-separating desilting-free device for water storehouse coal slime |
| CN105540801A (en) * | 2016-01-28 | 2016-05-04 | 上海华虹宏力半导体制造有限公司 | Fluoride-containing wastewater treatment system and method |
| CN211035362U (en) * | 2019-09-19 | 2020-07-17 | 沈阳松辽环境工程有限公司 | Mixed flocculant reaction device |
-
2021
- 2021-12-21 CN CN202111571522.3A patent/CN114349141A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1600411A (en) * | 2003-09-22 | 2005-03-30 | 张�林 | Mixer of liquid medicine |
| US20060006115A1 (en) * | 2004-07-08 | 2006-01-12 | Chen-Hung Hsien | Method of fluoride-containing wastewater treatment |
| CN203545755U (en) * | 2013-11-11 | 2014-04-16 | 嘉善绿野环保材料厂(普通合伙) | Variable-frequency intelligent water-treatment plant |
| CN104609523A (en) * | 2015-01-29 | 2015-05-13 | 中国航天空气动力技术研究院 | Pre-separating desilting-free device for water storehouse coal slime |
| CN105540801A (en) * | 2016-01-28 | 2016-05-04 | 上海华虹宏力半导体制造有限公司 | Fluoride-containing wastewater treatment system and method |
| CN211035362U (en) * | 2019-09-19 | 2020-07-17 | 沈阳松辽环境工程有限公司 | Mixed flocculant reaction device |
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