CN210595644U - Processing apparatus of high concentration acid ammonium fluoride waste liquid - Google Patents
Processing apparatus of high concentration acid ammonium fluoride waste liquid Download PDFInfo
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- CN210595644U CN210595644U CN201920902495.5U CN201920902495U CN210595644U CN 210595644 U CN210595644 U CN 210595644U CN 201920902495 U CN201920902495 U CN 201920902495U CN 210595644 U CN210595644 U CN 210595644U
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Abstract
The utility model relates to a treatment device of high-concentration acidic ammonium fluoride waste liquid, which comprises a primary defluorination device connected with a waste liquid storage tank, wherein the output end of the waste liquid storage tank is provided with a first pump, and the output end of the first pump is connected with the upper part of the primary defluorination device; the upper part of the primary defluorination device is also provided with a first medicament inlet groove, and the first medicament inlet groove comprises a feed barrel for bagged calcium hydroxide and calcium chloride to enter and a blower positioned on the feed barrel; the bottom of the primary defluorination device is provided with a primary precipitate outlet, the output end of the primary precipitate outlet is connected to a second pump, the output end of the second pump is connected to a plate-and-frame filter press, the top of the primary defluorination device is provided with a primary waste gas outlet, and the output end of the primary waste gas outlet is communicated with the top of the flocculation sedimentation device; the side of the first-stage defluorination device is provided with a second-stage defluorination device, and the upper part of the second-stage defluorination device is provided with a second agent inlet groove.
Description
Technical Field
The utility model relates to a water treatment field, concretely relates to processing apparatus of high concentration acid ammonium fluoride waste liquid.
Background
In recent years, with the increasing expansion of urban population and the continuous development of industry and agriculture, water environment pollution accidents frequently occur, and serious harm is caused to people and livestock. Many lakes and reservoirs cause eutrophication of water bodies due to the discharge of nitrogen and phosphorus, and seriously threaten the production life and ecological balance of human beings. Ammonia nitrogen is one of the main factors causing water eutrophication. Ammonia nitrogen exists in a plurality of industrial wastewater, in particular in the production processes of steel, fertilizer, inorganic chemical industry, ferroalloy, glass manufacture, meat processing and the like. In addition, the initial content of ammonia nitrogen in fresh wastewater such as leather, hatching, animal excrement and the like is not high, but the ammonia nitrogen concentration is rapidly increased in the process of wastewater accumulation due to deamination reaction of organic nitrogen in the wastewater. The existing ammonia nitrogen wastewater treatment technology can be divided into two categories: one is a physicochemical treatment technology, comprising stripping, precipitation, membrane absorption, wet oxidation, photocatalytic oxidation and the like, wherein the stripping and membrane absorption technologies both require ammonia nitrogen to exist in an ammonia molecular form as much as possible; another type of technology is biological denitrification. However, for some chemical ammonium fluoride waste liquids with high ammonia concentration and high fluorine content, the above two methods cannot remove ammonia nitrogen. The reason is that the ammonium fluoride has very complex components and is difficult to treat, and a disposal device and a disposal process are always lacked, so that the research on the ammonia-containing wastewater is not yet carried out at present.
The ammonium fluoride waste liquid mainly contains ammonium fluoride, hydrofluoric acid, fluosilicic acid and ions and the like, the hydrofluoric acid and the ammonium ions have great pollution to the environment, and safe disposal can be achieved only by removing the fluorine ions, the ammonium ions and the like. Therefore, a treatment device for the high-concentration acidic ammonium fluoride waste liquid is researched, and the treatment device has great significance for national economy and environmental protection.
SUMMERY OF THE UTILITY MODEL
The utility model provides a technical problem among the background art, provide a processing apparatus of high concentration acid ammonium fluoride waste liquid, simple structure, it is convenient to handle.
The technical scheme of the utility model: a treatment device for high-concentration acidic ammonium fluoride waste liquid comprises a primary defluorination device connected with a waste liquid storage tank, wherein the output end of the waste liquid storage tank is provided with a first pump, and the output end of the first pump is connected with the upper part of the primary defluorination device;
the upper part of the primary defluorination device is also provided with a first medicament inlet groove, and the first medicament inlet groove comprises a feed barrel for bagged calcium hydroxide and calcium chloride to enter and a blower positioned on the feed barrel; the bottom of the primary defluorination device is provided with a primary precipitate outlet, the output end of the primary precipitate outlet is connected to a second pump, the output end of the second pump is connected to a plate-and-frame filter press, the top of the primary defluorination device is provided with a primary waste gas outlet, and the output end of the primary waste gas outlet is communicated with the top of the flocculation sedimentation device;
a second-stage fluorine removal device is arranged beside the first-stage fluorine removal device, and a second agent inlet groove is arranged at the upper part of the second-stage fluorine removal device; a secondary sediment outlet is formed in the bottom of the secondary fluorine removal device, the output end of the secondary sediment outlet is connected to a second pump, a secondary waste gas outlet is formed in the top of the secondary fluorine removal device, and the output end of the secondary waste gas outlet is communicated with the top of the flocculation sedimentation device;
the flocculation and sedimentation device is arranged beside the secondary defluorination device, and a third agent inlet groove is arranged at the upper part of the flocculation and sedimentation device; a third-stage precipitate outlet is formed in the bottom of the flocculation sedimentation device, a third pump is arranged at the output end of the third-stage precipitate outlet, and the output end of the third pump is connected to the plate-and-frame filter press;
the plate-and-frame filter press is connected with an electro-catalytic device.
Furthermore, the upper part of the plate-and-frame filter press is connected with an electro-catalytic device.
And furthermore, the upper part of the plate-and-frame filter press is connected with the upper part of the flocculation settling device.
And furthermore, the upper part of the plate-and-frame filter press is connected with the upper part of the secondary defluorination device.
Furthermore, the side wall of the lower part of the primary fluorine removal device is provided with a cooling water inlet, the bottom of the primary fluorine removal device is provided with a cooling water outlet, and the cooling water inlet and the cooling water outlet are communicated with the outer wall of the primary fluorine removal device.
Further, a PH display is arranged on the primary defluorination device.
The technical effects of the utility model: a device for treating high-concentration acidic ammonium fluoride waste liquid is a device capable of realizing defluorination and ammonia nitrogen degradation, and has simple structure and convenient treatment.
Drawings
FIG. 1 is a block diagram of the present invention;
1-a waste liquid storage tank; 2-first-stage defluorination device; 3-a secondary defluorination device; 4-a flocculation and sedimentation device; 5-an electrocatalytic device; 6-plate and frame filter press.
Detailed Description
As shown in fig. 1, a treatment device for high-concentration acidic ammonium fluoride waste liquid comprises a primary defluorination device 2 connected with a waste liquid storage tank 1, wherein the output end of the waste liquid storage tank 1 is provided with a first pump, and the output end of the first pump is connected with the upper part of the primary defluorination device 2;
the upper part of the primary defluorination device 2 is also provided with a first medicament inlet groove, and the first medicament inlet groove comprises a feed barrel for bagged calcium hydroxide and calcium chloride to enter and a blower positioned on the feed barrel; a primary precipitate outlet is formed in the bottom of the primary fluorine removal device 2, the output end of the primary precipitate outlet is connected to a second pump, the output end of the second pump is connected to a plate-and-frame filter press 6, a primary waste gas outlet is formed in the top of the primary fluorine removal device 2, and the output end of the primary waste gas outlet is communicated with the top of the flocculation sedimentation device 4;
a secondary fluorine removal device 3 is arranged beside the primary fluorine removal device 2, and a second medicament inlet groove is arranged at the upper part of the secondary fluorine removal device 3; a secondary sediment outlet is formed in the bottom of the secondary fluorine removal device 3, the output end of the secondary sediment outlet is connected to a second pump, a secondary waste gas outlet is formed in the top of the secondary fluorine removal device 3, and the output end of the secondary waste gas outlet is communicated with the top of the flocculation sedimentation device 4;
the flocculation and sedimentation device 4 is arranged beside the secondary defluorination device 3, and a third agent inlet groove is arranged at the upper part of the flocculation and sedimentation device 4; a third-stage precipitate outlet is formed in the bottom of the flocculation sedimentation device 4, a third pump is arranged at the output end of the third-stage precipitate outlet, and the output end of the third pump is connected to the plate-and-frame filter press 6;
the plate-and-frame filter press 6 is connected with the electro-catalytic device 5.
Further, the upper part of the plate-and-frame filter press 6 is connected with the electro-catalytic device 5.
And further, the upper part of the plate-and-frame filter press 6 is connected with the upper part of the flocculation settling device 4.
And further, the upper part of the plate-and-frame filter press 6 is connected with the upper part of the secondary defluorination device 3.
Further, the lateral wall of the lower part of the one-level defluorination device 2 is provided with a cooling water inlet, the bottom of the one-level defluorination device 2 is provided with a cooling water outlet, and the cooling water inlet and the cooling water outlet are communicated with the outer wall of the one-level defluorination device 2.
Further, a PH display is arranged on the primary defluorination device 2.
The utility model discloses a treatment of high concentration acid ammonium fluoride waste liquid, high fluorine, high ammonia nitrogen waste water processing method promptly, including following step:
1) primary defluorination treatment: after wastewater in the waste liquid storage tank 1 enters the primary defluorination device 2, a slaked lime (calcium hydroxide) agent (and calcium chloride) is added through a first agent inlet tank to neutralize a large amount of hydrogen ions in the wastewater and precipitate most of fluoride ions;
in addition, the primary defluorination device 2 is closed, gas (a small amount of hydrogen fluoride) is introduced into the flocculation and sedimentation device 4 through the gas guide pipe through the primary waste gas outlet in the reaction process, calcium hydroxide is pre-installed or poured into the flocculation and sedimentation device 4, and the calcium hydroxide treats the hydrogen fluoride (generates calcium fluoride precipitate); conveying the reacted precipitate to a plate-and-frame filter press 6, and performing solid-liquid separation on the precipitate through the plate-and-frame filter press 6;
2) secondary defluorination treatment: conveying the wastewater treated in the step 1) to a secondary defluorination device 3, adding caustic soda flakes and/or aluminum sulfate through a second agent inlet groove, and adsorbing fluorine ions in the wastewater;
in addition, in the reaction process, gas (a small amount of hydrogen fluoride) is introduced into the flocculation and sedimentation device 4 through the gas guide pipe through the secondary waste gas outlet, and similarly, calcium hydroxide is pre-filled or poured into the flocculation and sedimentation device 4, and the calcium hydroxide treats the hydrogen fluoride (generates calcium fluoride precipitate); conveying the reacted precipitate to a plate-and-frame filter press 6, and performing solid-liquid separation on the precipitate through the plate-and-frame filter press 6;
3) flocculation and sedimentation treatment: conveying the wastewater treated in the step 2) to a flocculation and sedimentation device 4, adding a PAM (coagulant aid) solution through a third agent inlet tank to carry out thorough flocculation on the water body, and controlling the discharge standard of fluorine ions in the wastewater;
4) a solid-liquid separation system: outputting the mixed liquid treated in the step 3) to a plate-and-frame filter press 6, and performing solid-liquid separation through the plate-and-frame filter press 6;
5) electrocatalytic oxidation: and (3) conveying the wastewater subjected to solid-liquid separation in the step 4) to an electro-catalytic device 5 for electro-catalytic oxidation, and oxidizing and degrading ammonia nitrogen in the wastewater by performing catalytic oxidation on ruthenium-iridium anode and controlling the pH and the chloride ion content of a reaction system.
In addition, the subsequent processing adopts the steps of:
6) evaporation and crystallization: evaporating the wastewater treated in the step 5) through steam heat exchange, removing the evaporated crystals to a solidification landfill device, and performing biochemical treatment on the evaporated distillate;
7) curing and burying: adding cement into the sludge (sediment) treated in the step 4) and the crystals treated in the step 6) through a dosing device for solidification treatment, and ensuring that the treated solid sediment meets the requirement of the landfill pond on entering control.
The first-stage sediment and the second-stage sediment output by the first-stage sediment outlet and the second-stage sediment outlet are all precipitated sludge.
The second agent inlet groove is an agent groove 2 for adding aluminum sulfate solution.
The third medicament inlet groove is a medicament groove 3 for adding PAM solution.
In addition, the gas (a small amount of hydrogen fluoride) during the sludge (sediment) treatment by the plate and frame filter press 6 is transferred to the flocculation settling device 4 filled with calcium hydroxide for treatment.
Further, the upper part of the plate-and-frame filter press 6 is connected with the upper part of the flocculation sedimentation device 4.
The upper part of the plate-and-frame filter press 6 is connected with the upper part of the secondary defluorination device 3.
Thus, the liquid separated by the plate-frame filter press 6 is reprocessed, and the liquid to be processed can be directly conveyed to the flocculation and sedimentation device 4 and is subjected to flocculation and sedimentation processing and subsequent processing in the step 3); or can be conveyed to a secondary defluorination device 3 to be subjected to secondary defluorination treatment and subsequent treatment in the step 2) so as to ensure that the treated wastewater meets the requirements.
Still further, the lateral wall of the lower part of the one-level fluorine removal device 2 is provided with a cooling water inlet, the bottom of the one-level fluorine removal device 2 is provided with a cooling water outlet, and the cooling water inlet and the cooling water outlet are communicated with the outer wall of the one-level fluorine removal device 2. The reaction temperature is controlled by cooling water circulation cooling, so that the constant temperature of the reaction process is ensured, and the efficiency of the primary defluorination treatment is ensured.
In addition, a gas guide pipe is connected to the primary defluorination device 2 and extends into the bottom of the flocculation sedimentation device 4; the plate-and-frame filter press 6 forms a solid-liquid separation system; a pH adjusting tank, a control power supply and a cathode-anode catalytic oxidation tank are arranged in the electro-catalytic device 5; the solidification landfill adopts a solidification landfill device, and a dosing device and a stirring device are arranged in the solidification landfill device; the evaporative crystallization adopts an evaporative crystallization device, and a single-effect evaporator is arranged in the evaporative crystallization device.
The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Claims (6)
1. The utility model provides a processing apparatus of high concentration acid ammonium fluoride waste liquid which characterized in that: the device comprises a primary defluorination device (2) connected with a waste liquid storage tank (1), wherein the output end of the waste liquid storage tank (1) is provided with a first pump, and the output end of the first pump is connected with the upper part of the primary defluorination device (2);
the upper part of the primary defluorination device (2) is also provided with a first medicament inlet groove, and the first medicament inlet groove comprises a feed barrel for bagged calcium hydroxide and calcium chloride to enter and a blower positioned on the feed barrel; a primary precipitate outlet is formed in the bottom of the primary fluorine removal device (2), the output end of the primary precipitate outlet is connected to a second pump, the output end of the second pump is connected to a plate-and-frame filter press (6), a primary waste gas outlet is formed in the top of the primary fluorine removal device (2), and the output end of the primary waste gas outlet is communicated with the top of the flocculation sedimentation device (4);
a secondary fluorine removal device (3) is arranged beside the primary fluorine removal device (2), and a second medicament inlet groove is arranged at the upper part of the secondary fluorine removal device (3); a secondary sediment outlet is formed in the bottom of the secondary fluorine removal device (3), the output end of the secondary sediment outlet is connected to a second pump, a secondary waste gas outlet is formed in the top of the secondary fluorine removal device (3), and the output end of the secondary waste gas outlet is communicated with the top of the flocculation sedimentation device (4);
the flocculation and sedimentation device (4) is arranged beside the secondary defluorination device (3), and a third agent inlet groove is arranged at the upper part of the flocculation and sedimentation device (4); a third-stage precipitate outlet is formed in the bottom of the flocculation sedimentation device (4), a third pump is arranged at the output end of the third-stage precipitate outlet, and the output end of the third pump is connected to the plate-and-frame filter press (6);
the plate-and-frame filter press (6) is connected with the electro-catalytic device (5).
2. The apparatus for treating a high-concentration acidic ammonium fluoride waste liquid according to claim 1, characterized in that: the upper part of the plate-and-frame filter press (6) is connected with the electro-catalytic device (5).
3. The apparatus for treating a high-concentration acidic ammonium fluoride waste liquid according to claim 2, characterized in that: the upper part of the plate-and-frame filter press (6) is connected with the upper part of the flocculation sedimentation device (4).
4. The apparatus for treating a high-concentration acidic ammonium fluoride waste liquid according to claim 2, characterized in that: the upper part of the plate-and-frame filter press (6) is connected with the upper part of the secondary defluorination device (3).
5. The apparatus for treating a high-concentration acidic ammonium fluoride waste liquid according to claim 1, characterized in that: the lateral wall of the lower part of the one-level defluorination device (2) is provided with a cooling water inlet, the bottom of the one-level defluorination device (2) is provided with a cooling water outlet, and the cooling water inlet and the cooling water outlet are communicated with the outer wall of the one-level defluorination device (2).
6. The apparatus for treating a high-concentration acidic ammonium fluoride waste liquid according to claim 1, characterized in that: a pH display is arranged on the first-stage defluorination device (2).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920902495.5U CN210595644U (en) | 2019-06-14 | 2019-06-14 | Processing apparatus of high concentration acid ammonium fluoride waste liquid |
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| CN201920902495.5U CN210595644U (en) | 2019-06-14 | 2019-06-14 | Processing apparatus of high concentration acid ammonium fluoride waste liquid |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110104866A (en) * | 2019-06-14 | 2019-08-09 | 安徽浩悦环境科技有限责任公司 | A kind of processing unit and its treatment process of high-concentration acidic wastewater fluorination waste liquor of ammonium |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110104866A (en) * | 2019-06-14 | 2019-08-09 | 安徽浩悦环境科技有限责任公司 | A kind of processing unit and its treatment process of high-concentration acidic wastewater fluorination waste liquor of ammonium |
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Address after: 230000 Wushan Town, Changfeng County, Hefei City, Anhui Province Patentee after: Anhui Haoyue Environmental Technology Co.,Ltd. Address before: 230000 Wushan Town, Changfeng County, Hefei City, Anhui Province Patentee before: ANHUI HAO YUE ENVIRONMENTAL TECHNOLOGY Co.,Ltd. |