CN113860475A

CN113860475A - Wastewater ammonia nitrogen removal reaction system convenient for adding sodium hypochlorite

Info

Publication number: CN113860475A
Application number: CN202111093000.7A
Authority: CN
Inventors: 潘国辉; 刘海丰; 陈灵涛; 齐华; 向宇; 黎东旭; 贲鹤; 易佳佳
Original assignee: Hubei Desheng Environmental Protection Technology Co ltd
Current assignee: Hubei Desheng Environmental Protection Technology Co ltd
Priority date: 2021-09-17
Filing date: 2021-09-17
Publication date: 2021-12-31
Anticipated expiration: 2041-09-17
Also published as: CN113860475B

Abstract

The invention provides a wastewater ammonia nitrogen removal reaction system convenient for adding sodium hypochlorite, which comprises a tank body and a dosing assembly fixedly arranged on the outer wall of the tank body, wherein an ORP (oxidation-reduction potential) measuring instrument is also fixedly arranged on the outer wall of the tank body, the ORP measuring instrument is connected with a probe through a wire, the top end of the tank body is in threaded connection with a vertical sliding tube positioned in the tank body, a first floating plate in sliding connection with the sliding tube is arranged in the sliding tube, the probe is in threaded connection with the first floating plate, the working end of the probe is positioned below the first floating plate, the wire is connected with the non-working end of the probe, and the wire penetrates out of the upper end of the sliding tube and then is connected with the ORP measuring instrument. The invention can carry out oxidation-reduction potential measurement on the reaction liquid in the tank body through the arranged ORP measuring instrument, thereby visually judging the end point of the reaction, then continuing the next reaction process, improving the utilization rate of equipment and further improving the removal efficiency of the ammonia nitrogen in the wastewater.

Description

Wastewater ammonia nitrogen removal reaction system convenient for adding sodium hypochlorite

Technical Field

The invention relates to the technical field of wastewater treatment equipment, in particular to a wastewater ammonia nitrogen removal reaction system convenient for adding sodium hypochlorite.

Background

The ammonia nitrogen in the waste water is the important pollutant that needs to be got rid of, and in the actual operation process, can react through adding sodium hypochlorite to get rid of ammonia nitrogen wherein, the chemical formula is: 2NH₃+3NaClO→N₂↑+3H₂O+3NaCl。

The reaction system for removing ammonia nitrogen in the prior art is quite complex, the addition of sodium hypochlorite is extremely inconvenient, and if the sodium hypochlorite is added at any time or in any amount, the addition cannot be accurately determined, so that the ammonia nitrogen removal rate is low.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides a wastewater ammonia nitrogen removal reaction system convenient for adding sodium hypochlorite, which solves the problem of low ammonia nitrogen removal rate caused by inconvenient addition of sodium hypochlorite in the prior art.

According to the embodiment of the invention, the wastewater ammonia nitrogen removal reaction system convenient for adding sodium hypochlorite comprises a tank body and a dosing assembly fixedly arranged on the outer wall of the tank body, wherein an ORP measuring instrument is fixedly arranged on the outer wall of the tank body, the ORP measuring instrument is connected with a probe through a wire, the top end of the tank body is in threaded connection with a vertical sliding pipe positioned in the tank body, a first floating plate in sliding connection with the sliding pipe is arranged in the sliding pipe, the probe is in threaded connection with the first floating plate, the working end of the probe is positioned below the first floating plate, the wire is connected with the non-working end of the probe, and the wire penetrates out of the upper end of the sliding pipe and then is connected with the ORP measuring instrument.

In the above embodiment, the ORP measuring instrument is used to measure the oxidation-reduction potential in the tank body, and the end point of the reaction, i.e. the reaction stop time, can be determined by the oxidation-reduction potential, so as to stop the reaction in time, discharge the materials in the tank body, and perform the next reaction again; specifically, the probe is arranged in the tank body, and the specific position of the probe can float along with the liquid level in the tank body, so that the probe is always in contact with the reaction liquid and is not immersed in the reaction liquid.

Furthermore, the probe penetrates through the first floating plate, an annular magnetic lining located above the first floating plate is further sleeved outside the probe, a second floating plate in sliding connection with the sliding pipe is sleeved outside the sliding pipe, an annular magnet located above the second floating plate is further sleeved outside the sliding pipe, and the magnetic lining is located in a ring of the annular magnet.

Furthermore, a first limiting ring and a second limiting ring are fixedly connected to the inner wall and the outer wall of the lower end of the sliding pipe respectively.

Further, the medicine adding assembly comprises a medicine adding barrel fixedly connected with the outer wall of the tank body and a first driving motor fixedly connected with the outer wall of the tank body, a rotating rod is arranged in the medicine adding barrel and is coaxial with the axis, one end of the rotating rod extends out of the medicine adding barrel and is fixedly connected with a rotating shaft of the first driving motor, the other end of the rotating rod is fixedly connected with a circular sliding block, the sliding block is slidably connected with the medicine adding barrel, and a spiral blade is fixedly connected to the rotating rod;

it is close to add the medicine section of thick bamboo the first connecting pipe of one end fixedly connected with of first driving motor, be close to the one end fixedly connected with second connecting pipe of sliding block, wherein the second connecting pipe is kept away from add the one end of medicine section of thick bamboo with jar body intercommunication under the drive of first driving motor, the liquid medicine passes through first connecting pipe gets into add the medicine section of thick bamboo, then the warp the second connecting pipe gets into jar is internal.

Furthermore, a mesh plate which divides the tank body into an upper part and a lower part is fixedly arranged in the tank body, the sliding pipe is positioned above the mesh plate, and the second connecting pipe is communicated with the space of the tank body below the mesh plate.

Further, a second driving motor is installed at the top of the tank body, a vertical stirring rod is arranged in the tank body, the upper end of the stirring rod upwards extends to the outside of the tank body and is fixedly connected with a rotating shaft of the second driving motor, and an ejector rod is fixedly connected to the lower end of the stirring rod and is rotatably connected with the mesh plate.

Furthermore, the sliding block is also provided with a plurality of first channels which are arranged outside the rotating rod, and the first channels are communicated with a second channel arranged in the sliding block after being gathered and communicated with the second connecting pipe.

Further, the magnetic lining is fixedly connected with the first floating plate, the annular magnet is fixedly connected with the second floating plate, and the annular magnet is slidably connected with the sliding pipe.

Further, jar body upper end still fixed mounting has inlet pipe and third connecting pipe, jar body lower extreme still fixed mounting has row material pipe.

Further, the part of the lead wire positioned in the sliding tube is of a spiral elastic structure.

Compared with the prior art, the invention has the following beneficial effects:

the oxidation-reduction potential of the reaction liquid in the tank body can be measured by the arranged ORP measuring instrument, so that the end point of the reaction can be visually judged, then the next reaction process can be carried out continuously, the utilization rate of equipment is improved, and the ammonia nitrogen removal efficiency of the wastewater is improved;

the probe is arranged in the tank body through the sliding pipe instead of being directly arranged in the tank body, so that the probe can be conveniently disassembled, assembled and maintained, meanwhile, the operations of punching, welding and the like on the tank body are avoided, and the main structure of the tank body (namely the tank body part of the tank body) cannot be damaged, so that the main structure of the tank body is more stable in strength;

the medicine subassembly that sets up except can adding sodium hypochlorite, can also add pH adjusting agent etc..

Drawings

FIG. 1 is a first general structural diagram of an embodiment of the present invention;

FIG. 2 is a second schematic diagram of the overall structure of the embodiment of the present invention;

FIG. 3 is an enlarged view of a portion of the structure at A in FIG. 1;

FIG. 4 is an enlarged view of a portion of the structure at B in FIG. 1;

FIG. 5 is an enlarged view of a portion of the structure at C in FIG. 1;

in the above drawings:

the device comprises a tank body 1, a tank cover 2, a tank body 3, an ORP measuring instrument 4, a conducting wire 5, a probe 6, a sliding pipe 7, a first floating plate 8, a magnetic lining 9, a second floating plate 10, an annular magnet 11, a first limiting ring 12, a second limiting ring 13, a feeding cylinder 14, a first driving motor 15, a rotating rod 16, a sliding block 17, a spiral blade 18, a first connecting pipe 19, a second connecting pipe 20, a first channel 21, a second channel 22, a mesh plate 23, a feeding pipe 24, a third connecting pipe 25, a discharging pipe 26, a second driving motor 27, a stirring rod 28, a push rod 29 and a stirring blade 30.

Detailed Description

The technical solution of the present invention is further explained with reference to the drawings and the embodiments.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.

As shown in fig. 1, 2 and 3, this embodiment provides a reaction system for removing ammonia and nitrogen from wastewater to facilitate the addition of sodium hypochlorite, which comprises a tank body 1 and a dosing assembly fixedly arranged on the outer wall of the tank body 1, wherein an ORP (oxidation-reduction potential) measuring instrument 4 is also fixedly arranged on the outer wall of the tank body 1, the ORP measuring instrument 4 is connected with a probe 6 through a lead 5, the top end of the tank body 1 is in threaded connection with a vertical sliding tube 7 positioned in the tank body 1, a first floating plate 8 connected with the sliding pipe 7 in a sliding way is arranged in the sliding pipe 7, the probe 6 is connected with the first floating plate 8 in a threaded way, the working end of the probe 6 (namely the lower end of the probe 6) is positioned below the first floating plate 8, the lead 5 is connected to the non-working end of the probe 6 (i.e. the upper end of the probe 6) and the lead 5 is connected to the ORP meter 4 after passing through the upper end of the sliding tube 7.

In the above embodiment, the ORP measuring instrument 4 is arranged to measure the oxidation-reduction potential in the tank 1, and the end point of the reaction, i.e. the reaction stop time, can be determined by the oxidation-reduction potential, so as to stop the reaction in time, discharge the material in the tank 1, and perform the subsequent reaction again; specifically, the probe 6 is arranged in the tank body 1, and the specific position of the probe 6 can float along with the liquid level in the tank body 1, so that the probe is always in contact with the reaction liquid and is not immersed in the reaction liquid;

the reaction system provided by the embodiment can carry out oxidation-reduction potential measurement on the reaction liquid in the tank body 1 through the arranged ORP measuring instrument 4, so that the end point of the reaction is visually judged, then the next reaction process can be carried out continuously, the utilization rate of equipment is improved, and the ammonia nitrogen removal efficiency of the wastewater is improved;

the probe 6 is arranged in the tank body 1 through the sliding pipe 7 instead of being directly arranged in the tank body 1, so that the probe 6 can be conveniently disassembled, assembled and maintained, meanwhile, the operations of punching, welding and the like on the tank body 1 are avoided in such a way, the main structure of the tank body 1 (namely the tank body 3 part of the tank body 1) cannot be damaged, and the main structure of the tank body 1 is more stable in strength; the medicine subassembly that sets up except can adding sodium hypochlorite, can also add pH adjusting agent etc..

When the reaction is carried out specifically, the amount of wastewater treated in each batch is different, the arranged first floating plate 8 floats on the liquid level, so that the working end of the probe 6 is always immersed below the liquid level of the reaction liquid, the ORP measuring instrument 4 can measure the oxidation-reduction potential in the whole process, similarly, the probe 6 can be replaced by the probe 6 of the pHORP measuring instrument 4, the pH value of the reaction liquid can also be measured, and the probe 6 can be conveniently disassembled and assembled, so that the replacement and maintenance are convenient.

In another embodiment, adopt the reaction system of this embodiment to carry out waste water treatment, utilize and add medicine subassembly and continuously add sodium hypochlorite to jar body 1, along with the addition of sodium hypochlorite, the oxidation-reduction potential of ORP apparatus 4 continues to rise, and when the oxidation-reduction potential of ORP apparatus 4 lasts 3 ~ 5min and no longer rises, the reaction of the reaction liquid in jar body 1 is complete, after the reaction liquid in jar body 1 is discharged, determines the ammonia nitrogen comprehensive removal rate that this moment got and is 95.4%.

As shown in fig. 1, 2 and 3, the probe 6 penetrates the first floating plate 8, a ring-shaped magnetic lining 9 positioned above the first floating plate 8 is further sleeved outside the probe 6, a second floating plate 10 connected with the sliding tube 7 in a sliding manner is sleeved outside the sliding tube 7, a ring-shaped magnet 11 positioned above the second floating plate 10 is further sleeved outside the sliding tube 7, and the magnetic lining 9 is positioned in a ring of the ring-shaped magnet 11, so that the ring-shaped magnet 11 can better attract the magnetic lining 9. The contact area of the second floating plate 10 and the reaction liquid is larger, so that the buoyancy force applied to the second floating plate 10 is larger, and the annular magnet 11 can be driven to slide up and down on the sliding tube 7 (wherein, the components of the tank body 1, the sliding tube 7 and the like are made of non-ferrous materials, and the sliding of the annular magnet 11 is not influenced, if polyethylene materials are adopted, in order to reduce the friction force between the sliding tube 7 and the first floating plate 8 and the second floating plate 10, smooth enamel layers can be arranged on the inner wall and the outer wall of the sliding tube 7), the annular magnet 11 performs magnetic adsorption on the magnetic lining 9 in the sliding tube 7, so that the magnetic lining 9 and the first floating plate 8 are assisted to float up and down, and finally the probe 6 can smoothly perform position adjustment along with the liquid level of the reaction liquid, wherein, the magnetic lining 9 and the first floating plate 8 are fixedly connected, so that both can move up and down together, and similarly, the ring magnet 11 and the second floating plate 10 are also fixedly connected.

As shown in fig. 1, 2 and 4, in order to prevent the first floating plate 8 and the second floating plate 10 from being separated from the sliding tube 7, a first stopper ring 12 and a second stopper ring 13 are fixedly connected to the inner wall and the outer wall of the lower end of the sliding tube 7, respectively. When the liquid level is too low, the first limiting ring 12 and the second limiting ring 13 respectively limit the first floating plate 8 and the second floating plate 10 to continuously move downwards to be separated from the sliding pipe 7; specifically, the top of the arranged tank body 1 is a tank cover 2 which can be detached from the tank body 3, so that the internal components can be conveniently disassembled, assembled and maintained.

As shown in fig. 1 and 2, the part of the lead 5 located in the sliding tube 7 is a spiral elastic structure, and with the up-and-down movement of the probe 6, the spiral part of the lead 5 is compressed and elongated and can be always located in the sliding tube 7, so that the situation that when the probe 6 moves down, extra work is required to pull part of the lead 5 outside the sliding tube 7 into the sliding tube 7 is avoided, and the up-and-down movement of the probe 6 is better adapted.

As shown in fig. 1, 2 and 5, the medicine adding assembly includes a medicine adding barrel 14 fixedly connected to the outer wall of the tank body 1 and a first driving motor 15 fixedly connected to the outer wall of the tank body 1, a rotating rod 16 is arranged in the medicine adding barrel 14 along the same axial line, one end of the rotating rod 16 extends out of the medicine adding barrel 14 and is fixedly connected to the rotating shaft of the first driving motor 15, the other end of the rotating rod 16 is fixedly connected to a circular sliding block 17, the sliding block 17 is slidably connected to the medicine adding barrel 14, a spiral blade 18 is also fixedly connected to the rotating rod 16, and the first driving motor 15 can drive the spiral blade 18 to rotate in the medicine adding barrel 14 through the rotating rod 16;

add cartridge case 14 and be close to first connecting pipe 19 of one end fixedly connected with of first driving motor 15, be close to the one end fixedly connected with second connecting pipe 20 of sliding block 17, wherein second connecting pipe 20 is kept away from add the one end of cartridge case 14 with jar body 1 intercommunication under first driving motor 15 drives, and the liquid medicine passes through first connecting pipe 19 gets into add cartridge case 14, then the warp second connecting pipe 20 gets into in jar body 1, realized adding the medicine operation.

As shown in fig. 1, 2 and 5, specifically, the sliding block 17 is further provided with a plurality of first channels 21 surrounding the rotating rod 16, all the first channels 21 are gathered and then communicated with a second channel 22 arranged in the sliding block 17, and the second channel 22 is communicated with the second connecting pipe 20. The sliding block 17 is connected with the inner wall of the medicine adding barrel 14 in a sliding mode, so that the rotating rod 16 can rotate more stably, the rotating speed of the first driving motor 15 can reach 2000-2500 r/min, the spiral blade 18 rotates at a high speed, a higher feeding speed is achieved, another group of medicine adding assemblies can be arranged, air is introduced into the tank body 1 through the spiral blade 18 rotating at a high speed, and a better aeration effect is achieved; the first channel 21 and the second channel 22 enable the material in the drug adding cartridge 14 to enter the second connecting pipe 20 more efficiently, so that the material is extruded into the tank 1, and efficient drug adding (or aeration) operation is realized.

As shown in fig. 1 and 2, a mesh plate 23 dividing the tank body 1 into an upper part and a lower part is further fixedly arranged in the tank body 1, the sliding pipe 7 is positioned above the mesh plate 23, and the second connecting pipe 20 is communicated with a space of the tank body 1 below the mesh plate 23. The mesh plate 23 can filter the reaction liquid on the upper layer in the tank body 1 to prevent impurities from falling to the bottom of the tank body 1, and particularly, the second connecting pipe 20 is communicated with the space of the tank body 1 below the mesh plate 23, so that air can be introduced into the tank body 1 through the dosing assembly to play a role in aeration;

further, still fixed mounting has inlet pipe 24 and third connecting pipe 25 on jar body 1 upper end, jar body 1 lower extreme still fixed mounting has row material pipe 26, the inlet pipe 24 that sets up is used for following the leading-in waste water of jar body 1 upper end, row material pipe 26 then is used for leading out jar body 1 with the reaction liquid that the reaction is accomplished, make waste water still filter through mesh plate 23 when accomplishing the reaction like this, thereby can simplify follow-up continuation to the processing procedure of waste water, wherein, the third connecting pipe 25 that sets up then is connected with the gas recovery unit of peripheral hardware, be arranged in retrieving the reaction produced nitrogen gas and unnecessary air, also can guarantee simultaneously that jar internal and external atmospheric pressure of body 1 is unanimous, thereby guarantee that first floating plate 8 and second floating plate 10 can normally receive buoyancy and reciprocate.

As shown in fig. 1 and 2, a second driving motor 27 is installed at the top of the can body 1 (i.e. on the can cover 2), a vertical stirring rod 28 is installed in the can body 1, the upper end of the stirring rod 28 extends upwards to the outside of the can body 1 and is fixedly connected with a rotating shaft of the second driving motor 27, the lower end of the stirring rod 28 is fixedly connected with a push rod 29, and the push rod 29 is rotatably connected with the mesh plate 23, so that the lower end of the stirring rod 28 is abutted against the mesh plate 23 by the push rod 29, the stability of the stirring rod 28 can be improved, meanwhile, the contact area between the push rod 29 and the mesh plate 23 is smaller than the end surface area of the stirring rod 28, thereby avoiding occupying more mesh plate 23 area, making the effective filtering area on the mesh plate 23 larger, and further, when the can cover 2 is opened, the stirring rod 28 and the push rod 29 can be separated from the mesh plate 23, thereby facilitating the cleaning and maintenance of the mesh plate 23. Second driving motor 27 stirs the reaction liquid in jar body 1 through drive stirring rod 28, the realization to make the reaction efficiency that goes on can improve, specifically, go back fixedly connected with stirring leaf 30 on the stirring rod 28, stir leaf 30 and rotate in order to reach better stirring effect along with stirring rod 28.

Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.

Claims

1. The utility model provides a waste water removes ammonia nitrogen reaction system convenient to add sodium hypochlorite, its characterized in that, including a jar body and fixed mounting be in add medicine subassembly on the external wall of jar, it has the ORP apparatus to go back fixed mounting on the external wall of jar, the ORP apparatus is connected with the probe through the wire, the top threaded connection of the jar body has and is located jar internal vertical sliding tube, be provided with sliding connection's first unsteady board with it in the sliding tube, the probe with first unsteady board threaded connection just the work end of probe is located the below of first unsteady board, the wire with probe non-work end is connected just the wire is followed the sliding tube upper end is worn out the back with the ORP apparatus is connected.

2. The system as claimed in claim 1, wherein the probe penetrates through the first floating plate, an annular magnetic lining is sleeved outside the probe and located above the first floating plate, the sliding tube is sleeved with a second floating plate in sliding connection with the sliding tube, and an annular magnet is sleeved outside the sliding tube and located above the second floating plate, wherein the magnetic lining is located in an annular ring of the annular magnet.

3. The system as claimed in claim 2, wherein the inner wall and the outer wall of the lower end of the sliding tube are fixedly connected with a first limiting ring and a second limiting ring respectively.

4. The wastewater ammonia nitrogen removal reaction system convenient for adding sodium hypochlorite according to claim 1, wherein the chemical adding assembly comprises a chemical adding barrel fixedly connected with the outer wall of the tank body and a first driving motor fixedly connected with the outer wall of the tank body, a rotating rod is arranged in the chemical adding barrel coaxially, one end of the rotating rod extends out of the chemical adding barrel and is fixedly connected with a rotating shaft of the first driving motor, the other end of the rotating rod is fixedly connected with a circular sliding block, the sliding block is slidably connected with the chemical adding barrel, and a spiral blade is further fixedly connected to the rotating rod;

5. The reaction system for removing ammonia and nitrogen from wastewater convenient for adding sodium hypochlorite according to claim 4, wherein a mesh plate for dividing the tank into an upper part and a lower part is fixedly arranged in the tank body, the sliding pipe is positioned above the mesh plate, and the second connecting pipe is communicated with a space of the tank body below the mesh plate.

6. The wastewater ammonia nitrogen removal reaction system convenient for adding sodium hypochlorite according to claim 5, wherein a second driving motor is installed at the top of the tank body, a vertical stirring rod is arranged in the tank body, the upper end of the stirring rod extends upwards to the outside of the tank body and is fixedly connected with a rotating shaft of the second driving motor, and the lower end of the stirring rod is fixedly connected with a push rod which is rotatably connected with the mesh plate.

7. The system as claimed in claim 4, wherein the sliding block is further provided with a plurality of first channels surrounding the rotating rod, all the first channels are gathered and communicated with a second channel arranged in the sliding block, and the second channel is communicated with the second connecting pipe.

8. The wastewater ammonia nitrogen removal reaction system convenient for adding sodium hypochlorite according to claim 2, wherein the magnetic lining is fixedly connected with the first floating plate, the annular magnet is fixedly connected with the second floating plate, and the annular magnet is slidably connected with the sliding pipe.

9. The wastewater ammonia nitrogen removal reaction system convenient for adding sodium hypochlorite according to any one of claims 1 to 8, wherein a feeding pipe and a third connecting pipe are fixedly arranged at the upper end of the tank body, and a discharging pipe is fixedly arranged at the lower end of the tank body.

10. The system as claimed in claim 9, wherein the portion of the conducting wire inside the sliding tube is a spiral elastic structure.