CN215924556U

CN215924556U - Device for treating desulfurization wastewater by adopting nanofiltration membrane

Info

Publication number: CN215924556U
Application number: CN202121794126.2U
Authority: CN
Inventors: 赵建建; 吕俊杰; 张�杰
Original assignee: Hangzhou Best Energy Saving Environmental Protection Technology Co ltd
Current assignee: Hangzhou Best Energy Saving Environmental Protection Technology Co ltd
Priority date: 2021-05-06
Filing date: 2021-08-03
Publication date: 2022-03-01
Anticipated expiration: 2031-08-03

Abstract

The utility model discloses a device for treating desulfurization wastewater by adopting nanofiltration membranes, which comprises a settling tank and a shell, wherein a support frame is arranged on the outer wall of the top of the shell, more than two nanofiltration membrane cylinders are arranged on the inner wall of the top of the support frame, the water inlet ends and the water outlet ends of two adjacent nanofiltration membrane cylinders are respectively connected through a connecting pipe, the water inlet end of one nanofiltration membrane cylinder is provided with a first three-way valve, the water outlet end of the other nanofiltration membrane cylinder is provided with a second three-way valve, the outer wall of one side of the shell is provided with a cleaning component, and the first three-way valve and the second three-way valve are respectively connected with the cleaning component. The utility model is provided with a nanofiltration membrane cylinder, more than two nanofiltration membrane cylinders are connected through a connecting pipe, waste liquid is controlled to enter the nanofiltration membrane cylinder through a first three-way valve and a second three-way valve, then the waste liquid is filtered, the filtered concentrated water enters a precipitation tank through a concentrated water pipe, and then the first three-way valve and the second three-way valve are controlled to add cleaning water to the nanofiltration membrane cylinder by utilizing a cleaning component, so that the cleaning is carried out.

Description

Device for treating desulfurization wastewater by adopting nanofiltration membrane

Technical Field

The utility model relates to the technical field of desulfurization wastewater treatment, in particular to a device for treating desulfurization wastewater by adopting a nanofiltration membrane.

Background

In the prior art, the desulfurization wastewater is mainly the discharge water of an absorption tower in the wet desulfurization (limestone/gypsum method) process of boiler flue gas; the impurities contained in the wastewater mainly comprise suspended matters, supersaturated sulfite, sulfate and heavy metals, and many of the impurities are the first pollutants which are strictly controlled in the national environmental protection standard.

Through search, the chinese patent application No. 201710208479.1 discloses a method for recycling desulfurization waste water, which comprises: pretreating the desulfurization wastewater to remove heavy metal ions, calcium ions and magnesium ions; carrying out ultrafiltration treatment on the pretreated effluent obtained in the step; and (4) performing nanofiltration treatment on the ultrafiltration effluent obtained in the step, and recycling the concentrated water obtained through the nanofiltration treatment as the water supplement of a desulfurization system. The above patents suffer from the following disadvantages: during nanofiltration treatment, a hollow immersed ultrafiltration membrane is adopted, but no cleaning measure is set, so that the surface of the nanofiltration membrane is polluted and blocked, and the permeability of the nanofiltration membrane is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the defects in the prior art and provides a device for treating desulfurization wastewater by using a nanofiltration membrane.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides an adopt and receive device of filter membrane processing desulfurization waste water, including gunbarrel and shell, shell top outer wall is provided with the support frame, support frame top inner wall is provided with more than two and receives a filter membrane section of thick bamboo, two adjacent receive filter membrane section of thick bamboos intake end and play water end and be connected through the connecting pipe respectively, wherein the intake end that receives a filter membrane section of thick bamboo on one side is provided with three-way valve one, the play water end that receives a filter membrane section of thick bamboo on the other side is provided with three-way valve two, shell one side outer wall is provided with washs the subassembly, three-way valve one and three-way valve two are connected with washing subassembly respectively, gunbarrel inner wall is provided with divides liquid subassembly, the shell bottom is formed with the collecting vat, gunbarrel is connected with the collecting vat through dense water pipe.

As a still further scheme of the utility model: the cleaning assembly comprises a cleaning pool, a filter screen, a water inlet pipe, a water pump, a waste liquid pipe, two rotating rollers and more than two water spraying heads, the water pump is arranged on the outer wall of one side of the shell, and the cleaning pool is arranged on the outer wall of one side of the shell.

As a still further scheme of the utility model: inlet tube one end sets up in the end that absorbs water of water pump, and the inlet tube other end is located washs the pond inner wall, and the waste liquid pipe sets up in wasing pond one side inner wall, and the filter screen is located between waste liquid pipe and the inlet tube.

As a still further scheme of the utility model: the water outlet end of the water pump is provided with a cleaning pipe, one end of the cleaning pipe is connected with a first three-way valve, the other opening of the first three-way valve is provided with a liquid inlet pipe, and a second three-way valve is connected with a waste liquid pipe.

As a still further scheme of the utility model: the collecting vat bottom inner wall of shell bottom is provided with the waste pipe, and two other openings of three-way valve are provided with the recovery tube, and shell one side outer wall is provided with the recovery pond, and the recovery tube other end is located inside the recovery pond, and two live-rollers rotate to be connected in shell one side inner wall.

As a still further scheme of the utility model: two the live-rollers are located two above and receive filter membrane section of thick bamboo both sides, and the setting in two live-rollers outer walls that the sprinkler bead distributes evenly more than two.

As a still further scheme of the utility model: divide the liquid subassembly to constitute by pipette, blow off pipe, the cover body, float board and toper filter screen, pipette sliding connection in precipitation tank top inner wall, float the board and set up in the one end that the pipette is located precipitation tank inside.

As a still further scheme of the utility model: the cover body sets up in floating board top outer wall, and the toper filter screen sets up in pipette one end outer wall, and the blow off pipe sets up in sedimentation tank bottom inner wall.

Compared with the prior art, the utility model provides a device for treating desulfurization wastewater by adopting a nanofiltration membrane, which has the following beneficial effects:

1. this kind of adopt to receive device of filter membrane processing desulfurization waste water, through being provided with more than two and receiving a filter membrane section of thick bamboo, receive a filter membrane section of thick bamboo more than two and be connected through the connecting pipe, through the three-way valve one and the three-way valve two that set up, control waste liquid gets into and receives a filter membrane section of thick bamboo, then filters, and the thick water under the filtration gets into the precipitation tank through thick water pipe, then controls three-way valve one and two utilization of three-way valve and washs the subassembly and add to receiving a filter membrane section of thick bamboo and wash water to wash.

2. This adopt to receive device of filter membrane processing desulfurization waste water through being provided with and wash the subassembly, wash the subassembly including wasing pond, filter screen, inlet tube, water pump, waste liquid pipe, two live-rollers and two above sprinkler heads, utilize the water pump extraction to wash the interior washing water entering of pond and receive a filter membrane section of thick bamboo to wash receiving a filter membrane section of thick bamboo, the sprinkler head washes receiving a filter membrane section of thick bamboo outer wall, the abluent waste water at last flows back to wash the pond or flows out from the waste water pipe.

3. This adopt to receive device of filter membrane processing desulfurization waste water through being provided with and divide the liquid subassembly, divides the liquid subassembly to constitute by pipette, blow off pipe, the cover body, float board and toper filter screen, utilizes to float the board and float in dense water for the toper filter screen is located below the liquid level all the time, thereby will deposit the clear solution suction after, the toper filter screen prevents to absorb mud etc. and the cover body prevents that mud from remaining on floating the board, makes to float the board and sink.

The parts which are not involved in the device are the same as or can be realized by adopting the prior art, and the device has the advantages of simple structure and convenient operation.

Drawings

FIG. 1 is a schematic structural diagram of a device for treating desulfurization wastewater by using a nanofiltration membrane according to the present invention in a front view;

FIG. 2 is a schematic side view of the apparatus for treating desulfurization wastewater using nanofiltration membrane according to the present invention;

FIG. 3 is a schematic structural diagram of a housing of the device for treating desulfurization wastewater by using a nanofiltration membrane, which is provided by the utility model;

FIG. 4 is a schematic structural diagram of a floating plate of the device for treating desulfurization wastewater by using a nanofiltration membrane according to the present invention.

In the figure: 1-a settling tank; 2-a pipette; 3-a thick water pipe; 4-a housing; 5-a liquid inlet pipe; 6, a first three-way valve; 7-a recovery tank; 8-a waste pipe; 9-a sewage draining pipe; 10-a cleaning pool; 11-a filter screen; 12-a water inlet pipe; 13-a water pump; 14-a connecting tube; 15-waste pipe; 16-a turning roll; 17-a sprinkler head; 18-a nanofiltration membrane cartridge; 19-a second three-way valve; 20-a cover body; 21-a floating plate; 22-conical screen.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

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, are merely for convenience in describing the present invention and simplifying the 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 thus, should not be construed as limiting the present invention.

Example 1:

the utility model provides an adopt and receive device that filter membrane handled desulfurization waste water, in order to wash, as shown in fig. 1, 2 and 3, including setting tank 1 and shell 4, the welding of shell 4 top outer wall has the support frame, support frame top inner wall joint has more than two and receive filter membrane section of thick bamboo 18, the water inlet end and the water outlet end of two adjacent receive filter membrane section of thick bamboos 18 are connected through connecting pipe 14 respectively, wherein the water inlet end joint of receiving filter membrane section of thick bamboo 18 on one side has three-way valve one 6, the water outlet end joint of receiving filter membrane section of thick bamboo 18 on the other side has three-way valve two 19, shell 4 one side outer wall is provided with the cleaning assembly, three-way valve one 6 and three-way valve two 19 are connected with the cleaning assembly respectively, setting tank 1 inner wall is provided with liquid separating assembly, shell 4 bottom forms the collecting vat, setting tank 1 is connected with the collecting vat through dense water pipe 3; through being provided with more than two and receiving a filter membrane section of thick bamboo 18, receive a filter membrane section of thick bamboo 18 more than two and be connected through connecting pipe 14, through the three-way valve 6 and the two 19 three-way valves that set up, control the waste liquid and get into and receive a filter membrane section of thick bamboo 18, then filter, the dense water under the filtration passes through dense water pipe 3 and gets into precipitation tank 1, then control three-way valve 6 and two 19 three-way valves and utilize the cleaning assembly to receive a filter membrane section of thick bamboo 18 and add washing water to wash.

In order to be able to clean more fully, as shown in fig. 1, 2 and 3, the cleaning assembly comprises a cleaning pool 10, a filter screen 11, a water inlet pipe 12, a water pump 13, a waste liquid pipe 15, two rotating rollers 16 and more than two water spray heads 17, the water pump 13 is fixed on the outer wall of one side of the shell 4 through bolts, the cleaning pool 10 is arranged on the outer wall of one side of the shell 4, one end of the water inlet pipe 12 is connected with the water suction end of the water pump 13 in a clamping manner, the other end of the water inlet pipe 12 is positioned on the inner wall of one side of the cleaning pool 10, the waste liquid pipe 15 is connected with the inner wall of one side of the cleaning pool 10, the filter screen 11 is arranged between the waste liquid pipe 15 and the water inlet pipe 12, the cleaning pipe is connected with the water outlet end of the water pump 13 in a clamping manner, one end of the cleaning pipe is connected with a three-way valve 6, the other opening of the three-way valve 6 is connected with the liquid pipe 5, a three-way valve 19 is connected with the waste liquid pipe 15, and the waste water pipe 8 is connected with the inner wall of the bottom of the collecting tank in a clamping manner, a recovery pipe is clamped at the other opening of the second three-way valve 19, a recovery tank 7 is arranged on the outer wall of one side of the shell 4, the other end of the recovery pipe is positioned in the recovery tank 7, the two rotating rollers 16 are rotatably connected to the inner wall of one side of the shell 4, the two rotating rollers 16 are positioned on two sides of more than two nanofiltration membrane cylinders 18, and more than two water spray heads 17 are uniformly distributed on the outer walls of the two rotating rollers 16; through being provided with the washing subassembly, wash the subassembly including washing pond 10, filter screen 11, inlet tube 12, water pump 13, waste liquid pipe 15, two live rollers 16 and two above sprinkler bead 17, utilize water pump 13 to extract the washing water that washs in the pond 10 and get into in receiving filter membrane section of thick bamboo 18 to receiving filter membrane section of thick bamboo 18 and wasing, sprinkler bead 17 washes receiving filter membrane section of thick bamboo 18 outer wall, and the last abluent waste water flows back to washing pond 10 or flows out from waste water pipe 8.

The working principle is as follows: through three-way valve 6 and three-way valve two 19 that set up, control waste liquid gets into and receives filter membrane section of thick bamboo 18, then filter, dense water under the filtration gets into the gunbarrel 1 through dense water pipe 3, then control three-way valve 6 and three-way valve two 19, utilize water pump 13 to extract the washing water entering in the washing tank 10 and receive in the membrane section of thick bamboo 18, thereby it washs to receiving membrane section of thick bamboo 18, sprinkler bead 17 is washed to receiving the membrane section of thick bamboo 18 outer wall, the last abluent waste water flows back to wash tank 10 or flows out from waste pipe 8.

Example 2:

a device for treating desulfurization wastewater by adopting a nanofiltration membrane is shown in figures 1 and 4, in order to precipitate concentrated water, a liquid separation component comprises a liquid suction pipe 2, a sewage discharge pipe 9, a cover body 20, a floating plate 21 and a conical filter screen 22, wherein the liquid suction pipe 2 is slidably connected to the inner wall of the top of a precipitation tank 1, the floating plate 21 is clamped at one end of the liquid suction pipe 2 in the precipitation tank 1, the cover body 20 is clamped on the outer wall of the top of the floating plate 21, the conical filter screen 22 is arranged on the outer wall of one end of the liquid suction pipe 2, and the sewage discharge pipe 9 is clamped on the inner wall of the bottom of the precipitation tank 1; through being provided with and dividing the liquid subassembly, divide the liquid subassembly to constitute by pipette 2, blow off pipe 9, the cover body 20, float board 21 and toper filter screen 22, utilize to float board 21 and float in dense water for toper filter screen 22 is located below the liquid level all the time, thereby will deposit the clear solution suction after, toper filter screen 22 prevents to absorb mud etc. and the cover body 20 prevents that mud from remaining on floating board 21, makes floating board 21 sink.

The working principle is as follows: utilize the floating plate 21 to float in dense water for conical filter screen 22 is located below the liquid level all the time, thereby the clear liquid suction after will deposiing, and conical filter screen 22 prevents to absorb mud etc. cover body 20 prevents mud from remaining on floating plate 21, makes floating plate 21 sink.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

Claims

1. A device for treating desulfurization wastewater by adopting a nanofiltration membrane, which comprises a precipitation tank (1) and a shell (4), it is characterized in that the outer wall of the top of the shell (4) is provided with a supporting frame, the inner wall of the top of the supporting frame is provided with more than two nanofiltration membrane cylinders (18), the water inlet ends and the water outlet ends of the two adjacent nanofiltration membrane cylinders (18) are respectively connected through a connecting pipe (14), wherein the end of intaking of receiving a filter membrane section of thick bamboo (18) on one side is provided with three-way valve (6), and the play water end of receiving a filter membrane section of thick bamboo (18) on the other side is provided with three-way valve (19), and shell (4) one side outer wall is provided with the washing subassembly, and three-way valve (6) and three-way valve (19) are connected with the washing subassembly respectively, and precipitation tank (1) inner wall is provided with divides the liquid subassembly, and shell (4) bottom is formed with the collecting vat, and precipitation tank (1) is connected with the collecting vat through dense water pipe (3).

2. The device for treating desulfurization wastewater by using nanofiltration membrane according to claim 1, wherein the cleaning component comprises a cleaning tank (10), a filter screen (11), a water inlet pipe (12), a water pump (13), a waste liquid pipe (15), two rotating rollers (16) and more than two water spray heads (17), the water pump (13) is arranged on the outer wall of one side of the shell (4), and the cleaning tank (10) is arranged on the outer wall of one side of the shell (4).

3. The nanofiltration membrane desulfurization wastewater treatment device according to claim 2, wherein one end of the water inlet pipe (12) is arranged at the water suction end of the water pump (13), the other end of the water inlet pipe (12) is arranged at the inner wall of the cleaning tank (10), the waste liquid pipe (15) is arranged at the inner wall of one side of the cleaning tank (10), the filter screen (11) is arranged at the inner wall of one side of the cleaning tank (10), and the filter screen (11) is arranged between the waste liquid pipe (15) and the water inlet pipe (12).

4. The device for treating desulfurization wastewater by using nanofiltration membrane according to claim 2, wherein the outlet end of the water pump (13) is provided with a cleaning pipe, one end of the cleaning pipe is connected with a first three-way valve (6), the other opening of the first three-way valve (6) is provided with a liquid inlet pipe (5), and a second three-way valve (19) is connected with the waste liquid pipe (15).

5. The device for treating desulfurization wastewater by using nanofiltration membrane according to claim 2, wherein the inner wall of the bottom of the collecting tank at the bottom of the shell (4) is provided with a wastewater pipe (8), the other opening of the second three-way valve (19) is provided with a recovery pipe, the outer wall of one side of the shell (4) is provided with a recovery tank (7), the other end of the recovery pipe is positioned inside the recovery tank (7), and the two rotating rollers (16) are rotatably connected to the inner wall of one side of the shell (4).

6. The device for treating desulfurization wastewater by using nanofiltration membrane according to claim 2, wherein two rotating rollers (16) are positioned at two sides of more than two nanofiltration membrane cylinders (18), and more than two water spray heads (17) are uniformly distributed on the outer walls of the two rotating rollers (16).

7. The device for treating desulfurization wastewater by using nanofiltration membrane according to claim 1, wherein the liquid separation component comprises a liquid suction pipe (2), a sewage discharge pipe (9), a cover body (20), a floating plate (21) and a conical filter screen (22), the liquid suction pipe (2) is slidably connected to the inner wall of the top of the settling tank (1), and the floating plate (21) is arranged at one end of the liquid suction pipe (2) positioned inside the settling tank (1).

8. The device for treating desulfurization wastewater by using nanofiltration membrane according to claim 7, wherein the cover body (20) is arranged on the outer wall of the top of the floating plate (21), the conical filter screen (22) is arranged on the outer wall of one end of the pipette (2), and the drain pipe (9) is arranged on the inner wall of the bottom of the settling tank (1).