CN212403732U

CN212403732U - Microbubble treatment equipment for producing calcium fluoride from fluorine-containing wastewater in recycling manner

Info

Publication number: CN212403732U
Application number: CN202020619595.XU
Authority: CN
Inventors: 李远兵; 夏雨天; 孙孝敏
Original assignee: Changzhou Dession Environmental Protection Engineering Co ltd
Current assignee: Changzhou Dession Environmental Protection Engineering Co ltd
Priority date: 2020-04-22
Filing date: 2020-04-22
Publication date: 2021-01-26
Anticipated expiration: 2030-04-22

Abstract

The utility model discloses a belong to waste water treatment technical field, specifically be a little bubble treatment facility of fluoride waste water resourceful production calcium fluoride, including waste water tank, acid-base neutralization pond, defluorination reaction tank, calcium chloride dosing tank, inhale fluorine reaction tank and electric cabinet, loop through the transfer line intercommunication between waste water tank, acid-base neutralization pond, defluorination reaction tank and the absorption fluorine reaction tank, calcium chloride dosing tank and defluorination reaction tank pass through the dosing pipe intercommunication, install medicine valve and dosing pump on the pipeline of dosing pipe, install little bubble air supporting device in the defluorination reaction tank, install defluorination resin in the absorption fluorine reaction tank, install the backwash pipe on the upper side of the absorption fluorine reaction tank, carry out the flotation to the calcium fluoride that generates in the waste water in time through little bubble air supporting device, obtain high-purity calcium fluoride, make the fluorine resource recovery in the waste water recycle, not only reduces the generation of dangerous waste calcium fluoride sludge, but also reduces the enterprise cost.

Description

Microbubble treatment equipment for producing calcium fluoride from fluorine-containing wastewater in recycling manner

Technical Field

The utility model relates to a waste water treatment technical field specifically is a microbubble treatment facility of fluoride waste water resourceful production calcium fluoride.

Background

The wastewater treatment is to treat the wastewater by physical, chemical and biological methods, so that the wastewater is purified, the pollution is reduced, the wastewater is recycled and reused, and water resources are fully utilized. Separating the pollutants from the waste water or converting the pollutants into harmless substances. A large amount of fluorine-containing wastewater is generated in the production and manufacturing process of fluorine chemicals, so that the environment is polluted, the production of agriculture and animal husbandry is influenced, and the health of human beings is threatened greatly.

At present, the fluorine element is transferred to the sludge mainly in a mode of generating calcium fluoride precipitate, but impurities such as COD (chemical oxygen demand), coagulation coagulant aid, lime, calcium carbonate, silicon dioxide and the like are carried in the calcium fluoride sludge, so that the use standard cannot be reached, the treatment is carried out according to dangerous waste, the production cost of an enterprise is increased, the fluorine resource is wasted, and the harm and threat of the fluorine-containing sludge to the environment are far higher than those of waste water.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a microbubble treatment facility of fluoride waste water resourceful production calcium fluoride, mainly through the mode that generates calcium fluoride and deposit at present in solving above-mentioned background art, make fluorine element shift to in the mud, nevertheless smuggleing secretly COD in the calcium fluoride mud, coagulate coagulant aid, lime, calcium carbonate, impurity such as silica, can't reach the standard of use, deal with according to danger waste admittedly, the manufacturing cost of enterprise has not only been increased, fluorine resource has been wasted, and fluorine-containing sludge is far above the waste water problem to the harm and the threat of environment.

In order to achieve the above object, the utility model provides a following technical scheme: a microbubble treatment equipment for producing calcium fluoride by recycling fluorine-containing wastewater comprises a wastewater tank, an acid-base neutralization tank, a defluorination reaction tank, a calcium chloride dosing tank, a fluorine absorption reaction tank and an electric cabinet, wherein a liquid conveying pipe is sequentially communicated among the wastewater tank, the acid-base neutralization tank, the fluorine removal reaction tank and the fluorine absorption reaction tank, the calcium chloride dosing tank and the fluorine removal reaction tank are communicated through a dosing pipe, a dosing valve and a dosing pump are installed on a pipeline of the dosing pipe, a microbubble air flotation device is installed in the fluorine removal reaction tank, a defluorination resin is installed in the fluorine absorption reaction tank, a back flushing pipe is installed on the upper side of the fluorine absorption reaction tank, the fluorine absorption reaction tank is communicated with a back flushing tank through the back flushing pipe, a water inlet pipe is arranged on the left side of the back flushing tank, a tank cover is hinged to the upper side of the back flushing tank, a rotating shaft is arranged inside the back flushing tank, and a stirring blade, the improved fluorine absorption reaction tank is characterized in that the upper side of the backwashing tank is connected with a motor through a screw, an output shaft of the motor is fixedly connected with the upper end of a rotating shaft, a liquid viewing window is arranged on the front side of the backwashing tank, a backwashing pump and a backwashing valve are installed on a pipeline of the backwashing pipe, a return pipe is arranged between the wastewater tank and the fluorine absorption reaction tank, a return valve is installed on a pipeline of the return pipe, the electric cabinet is electrically connected with the backwashing valve, the backwashing pump, the return valve, the chemical adding valve, the motor and the chemical adding pump, and a drain pipe is arranged on the right side of.

Preferably, the output shaft of the motor is coaxially arranged with the rotating shaft.

Preferably, the defluorination resin is calcium hydroxy phosphate defluorination resin.

Preferably, a water inlet valve is installed on a pipeline of the water inlet pipe.

Preferably, the rotating shaft is located in the center of the backwash tank.

Compared with the prior art, the beneficial effects of the utility model are that:

1) calcium fluoride generated in the wastewater in real time is subjected to flotation through a micro-bubble air flotation device to obtain high-purity calcium fluoride, so that fluorine resources in the wastewater are recycled, the generation of hazardous waste calcium fluoride sludge is reduced, and the enterprise cost is reduced;

2) the wastewater deeply adsorbs fluoride ions through the calcium hydroxy phosphate defluorinating resin, so that the concentration of the fluoride ions in the wastewater is reduced, and the wastewater is discharged after reaching the standard;

3) the calcium hydroxy phosphate defluorinating resin is a fluorine selective functional group, has high selectivity to fluorine ions and is easy to adsorb and desorb and regenerate, and the sodium hydroxide solution in the backwashing tank is used for backwashing the calcium hydroxy phosphate defluorinating resin to ensure that the fluorine ions return to the wastewater tank through the return pipe, thereby leading the fluoride to be resourced into calcium fluoride.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

In the figure: 1 a wastewater tank, 2 a return pipe, 3 an acid-base neutralization tank, 4 a defluorination reaction tank, 5 a micro-bubble air flotation device, 6 a calcium chloride dosing tank, 7 a dosing pump, 8 a dosing valve, 9 a dosing pipe, 10 a fluorine absorption reaction tank, 11 defluorination resin, 12 a drain pipe, 13 a return valve, 14 an electric cabinet, 15 a backwashing pipe, 16 a backwashing valve, 17 a backwashing pump, 18 a liquid window, 19 a backwashing tank, 20 a tank cover, 21 a motor, 22 a rotating shaft, 23 a stirring blade, 24 a water inlet pipe and 25 a liquid conveying pipe.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in 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.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Example (b):

referring to fig. 1, the present invention provides a technical solution: a micro-bubble treatment device for producing calcium fluoride by recycling fluorine-containing wastewater comprises a wastewater tank 1, an acid-base neutralization tank 3, a defluorination reaction tank 4, a calcium chloride dosing tank 6, a fluorine absorption reaction tank 10 and an electric control box 14, wherein the wastewater tank 1, the acid-base neutralization tank 3, the defluorination reaction tank 4 and the fluorine absorption reaction tank 10 are sequentially communicated through a liquid conveying pipe 25, the calcium chloride dosing tank 6 and the defluorination reaction tank 4 are communicated through a dosing pipe 9, a dosing valve 8 and a dosing pump 7 are arranged on the pipeline of the dosing pipe 9, an air floatation micro-bubble device 5 is arranged in the defluorination reaction tank 4, the micro-bubble air floatation device 5 is an existing device, and when suspended solid matters and colloidal state matters are separated and removed by the air floatation device 5, micro-bubbles generated by a physical method are adhered with micro-fine floating matters and micro-fine floccules in treated water to form 'copolymer adhesion bonding' with inter-particle bag clamps and middle bubble adhesion, in addition, the micro-flotation is completed through the chemical flocculation, the calcium fluoride which is generated in the wastewater in time is subjected to the flotation to obtain high-purity calcium fluoride, so that fluorine resources in the wastewater are recycled, the generation of hazardous waste calcium fluoride sludge is reduced, and the enterprise cost is reduced, the fluorine-absorbing reaction tank 10 is internally provided with the fluorine-removing resin 11 which is a fluorine selective functional group, has high selectivity on fluorine ions, is easy to adsorb and desorb and regenerate, is not influenced by anions such as sulfate radicals, nitrate radicals and chloride ions, is convenient for back flushing the fluorine-removing resin 11, so that the fluorine ions return to the wastewater tank 1 through the return pipe 2, the fluoride is converted into the calcium fluoride, the upper side of the fluorine-absorbing reaction tank 10 is provided with the back flushing pipe 15, the fluorine-absorbing reaction tank 10 is communicated with the back flushing tank 19 through the back flushing pipe 15, the left side of the back flushing tank 19 is provided with the water inlet pipe 24, the upper side of the back flushing tank 19 is hinged with a tank cover 20, sodium hydroxide is added by opening the tank cover 20, a rotating shaft 22 is arranged in the back flushing tank 19, the outer wall of the rotating shaft 22 is fixedly connected with a stirring blade 23, the added solid sodium hydroxide and water are quickly mixed into a sodium hydroxide solution through the stirring blade 23, the upper side of the back flushing tank 19 is connected with a motor 21 through a screw, the output shaft of the motor 21 is fixedly connected with the upper end of the rotating shaft 22, the front side of the back flushing tank 19 is provided with a liquid viewing window 18, a back flushing pump 17 and a back flushing valve 16 are installed on a pipeline of a back flushing pipe 15, a return pipe 2 is arranged between the wastewater tank 1 and the fluorine absorption reaction tank 10, a return valve 13 is installed on a pipeline of the return pipe 2, and the electric control box 14 is electrically connected with the back flushing valve 16, the back flushing pump 17, the, and a drain pipe 12 is arranged on the right side of the fluorine absorption reaction tank 10 and used for discharging the treated wastewater.

The output shaft of the motor 21 is coaxial with the rotating shaft 22, so that the motor 21 can drive the rotating shaft 22 to rotate conveniently.

The defluorination resin 11 is calcium hydroxy phosphate defluorination resin.

A water inlet valve is arranged on the pipeline of the water inlet pipe 24, and water is supplemented to the back washing tank 19 through the water inlet pipe 24.

The spindle 22 is located centrally in the backwash tank 19.

The working principle is as follows: waste water conveyed from a waste water tank 1 is adjusted to a proper pH value through an acid-base neutralization tank 3 and enters a defluorination reaction tank 4, calcium chloride is added through a calcium chloride dosing tank 6, calcium fluoride generated in the waste water in real time is subjected to flotation through a micro-bubble air flotation device 5 to obtain high-purity calcium fluoride, so that fluorine resources in the waste water are recycled, the generation of hazardous waste calcium fluoride sludge is reduced, the enterprise cost is reduced, the treated waste water enters a fluorine absorption reaction tank 10, the concentration of fluorine ions in the waste water is reduced through deep adsorption of calcium hydroxyphosphate defluorination resin, the waste water is discharged up to the standard, after the waste water is discharged, the calcium hydroxyphosphate defluorination resin is a fluorine selective functional group, the selectivity to the fluorine ions is high, the adsorption and desorption regeneration are easy, the sodium hydroxide flushing solution in a reverse tank 19 is used for backwashing the calcium hydroxyphosphate defluorination resin, so that the fluorine ions return to the waste water tank 1 through a return pipe 2, thereby allowing the fluoride to be resourced as calcium fluoride.

Having shown and described the basic principles and principal features of the invention and advantages thereof, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof; the present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a microbubble treatment facility of fluoride waste water resourceful production calcium fluoride, includes waste water tank (1), acid-base neutralization pond (3), defluorination reaction tank (4), calcium chloride dosing tank (6), inhales fluorine reaction tank (10) and electric cabinet (14), its characterized in that: waste water tank (1), acid-base neutralization pond (3), defluorination reaction tank (4) and inhale and loop through transfer line (25) intercommunication between the fluorine reaction tank (10), calcium chloride dosing tank (6) and defluorination reaction tank (4) are through adding pencil (9) intercommunication, install on the pipeline of pencil (9) with medicine valve (8) and add pencil (7), install microbubble air supporting device (5) in the defluorination reaction tank (4), install defluorination resin (11) in inhaling fluorine reaction tank (10), back flush pipe (15) are installed to inhaling fluorine reaction tank (10) upside, it has back flush tank (19) to inhale fluorine reaction tank (10) through back flush pipe (15) intercommunication, back flush tank (19) left side is provided with inlet tube (24), back flush tank (19) upside articulates there is case lid (20), back flush tank (19) inside is provided with pivot (22), pivot (22) outer wall fixedly connected with stirring leaf (23), backwash box (19) upside has motor (21) through the screw connection, motor (21) output shaft and pivot (22) upper end fixed connection, backwash box (19) front side is provided with sight window (18), install back flush pump (17) and back flush valve (16) on the pipeline of backwash pipe (15), be provided with back flow (2) between waste water tank (1) and inhale fluorine reaction tank (10), install back flow valve (13) on the pipeline of back flow (2), electric cabinet (14) and back flush valve (16), back flush pump (17), back flow valve (13), add medicine valve (8), motor (21) and add medicine pump (7) electricity and be connected, it is provided with drain pipe (12) to inhale fluorine reaction tank (10) right side.

2. The microbubble treatment equipment for the resource production of calcium fluoride from fluorine-containing wastewater according to claim 1, characterized in that: the output shaft of the motor (21) is coaxial with the rotating shaft (22).

3. The microbubble treatment equipment for the resource production of calcium fluoride from fluorine-containing wastewater according to claim 1, characterized in that: the defluorination resin (11) is calcium hydroxy phosphate defluorination resin.

4. The microbubble treatment equipment for the resource production of calcium fluoride from fluorine-containing wastewater according to claim 1, characterized in that: and a water inlet valve is arranged on the pipeline of the water inlet pipe (24).

5. The microbubble treatment equipment for the resource production of calcium fluoride from fluorine-containing wastewater according to claim 1, characterized in that: the rotating shaft (22) is positioned in the center of the backwashing tank (19).