Liquid stabilizing sealing tank for adjusting alkaline sewage through carbon dioxide

Abstract

The invention relates to the technical field of sewage treatment devices, and discloses a liquid stabilizing sealing tank for adjusting alkaline sewage through carbon dioxide, the liquid stabilizing sealing tank comprises a sealing outer tank, an overflow inner tank, a sealing top cover assembly, a first liquid outlet inclined pipe and a second liquid outlet inclined pipe, the overflow inner tank is coaxially and detachably arranged in the sealing outer tank, and a gap is reserved between the overflow inner tank and the sealing outer tank; the sealing top cover assembly is detachably and fixedly connected with the upper end of the sealing outer tank; a first liquid inlet inclined pipe and a second liquid inlet inclined pipe are arranged on the sealed outer tank, and a first liquid inlet hole corresponding to the first liquid inlet inclined pipe and a second liquid inlet hole corresponding to the second liquid inlet inclined pipe are formed in the overflow inner tank; the liquid stabilizing sealing tank for adjusting alkaline sewage by carbon dioxide provided by the invention solves the problems that in the process of neutralizing alkaline sewage by carbon dioxide, blockage of pipelines and accessories is difficult to clean, the labor intensity is high, and the normal sewage treatment process is influenced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sewage treatment devices, and particularly relates to a stable liquid sealing tank for carbon dioxide adjusting alkaline sewage. BACKGROUND

[0002] Carbon dioxide is dissolved in water to generate carbonic acid, which can be used for neutralization and adjustment treatment of alkaline sewage. The carbon dioxide treatment of alkaline sewage has the advantages of remarkable effect, low cost, simple process control, safe and convenient storage and transportation of carbon dioxide, and is more and more widely used in the treatment of alkaline sewage.

[0003] In the process of carbon dioxide neutralizing alkaline sewage, the neutralization water generated by the neutralization reactor of the carbon dioxide neutralization and adjustment alkaline sewage system contains a large amount of precipitates. Such precipitates are easy to adhere to the pipes and accessories between the reactor and the neutralization water pool to form scale bodies, resulting in blockage of the pipes and accessories. The blockage of the pipes and accessories not only is difficult to clean and has high labor intensity, but also affects the normal sewage treatment process. SUMMARY

[0004] The present application aims to provide a stable liquid sealing tank for carbon dioxide adjusting alkaline sewage to solve at least one of the above problems existing in the prior art.

[0005] In order to achieve the above-mentioned purpose, the present application adopts the following technical scheme:

[0006] A stable liquid sealing tank for carbon dioxide adjusting alkaline sewage, comprising a sealing outer tank, an outer overflow inner tank, a sealing top cover assembly, a first liquid outlet inclined pipe and a second liquid outlet inclined pipe, the outer overflow inner tank is coaxially and detachably arranged in the sealing outer tank and a gap is left between the two, and the sealing top cover assembly is detachably fixedly connected with the upper end of the sealing outer tank.

[0007] A first liquid inlet inclined pipe and a second liquid inlet inclined pipe are arranged on the sealing outer tank, a first liquid inlet hole corresponding to the first liquid inlet inclined pipe and a second liquid inlet hole corresponding to the second liquid inlet inclined pipe are arranged on the outer overflow inner tank, the lower end of the first liquid outlet inclined pipe is connected with the first liquid inlet inclined pipe, the upper end of the first liquid outlet inclined pipe is connected with the water outlet pipe of the neutralization reactor, the lower end of the second liquid outlet inclined pipe is connected with the second liquid inlet inclined pipe, and the upper end of the second liquid outlet inclined pipe is connected with the water outlet pipe of another neutralization reactor.

[0008] A overflow liquid outlet pipe extending upward is arranged in the middle of the outer overflow inner tank, the upper end of the overflow liquid outlet pipe is lower than the upper end of the outer overflow inner tank, the lower end of the overflow liquid outlet pipe is communicated with the neutralization water pool, a PH value detector is arranged on the sealing outer tank, a backflow liquid outlet pipe is arranged on the sealing outer tank, a backflow electric valve is arranged on the backflow liquid outlet pipe, the backflow liquid outlet pipe is communicated with the raw water pool, and a backflow hole corresponding to the backflow liquid outlet pipe is arranged on the outer overflow inner tank.

[0009] The bottom of the sealed outer tank is provided with a first liquid discharge hole, and the bottom of the overflow inner tank is provided with a second liquid discharge hole.

[0010] The overflow inner tank is coaxially and detachably arranged in the sealed outer tank, and the removable overflow inner tank can avoid the problem of long cleaning time and difficult cleaning after scaling in the sealed outer tank, which affects the treatment process. Since the main component of scaling is calcium carbonate, the viscosity of calcium carbonate is large, and the adhesion on the pipe wall is strong. If the space between the sealed outer tank and the overflow inner tank is large, the scaling amount is large, and the inner tank is difficult to remove. In the technical solution, the overflow inner tank is coaxially arranged in the sealed outer tank, and a gap is left between the two. The gap between the overflow inner tank and the sealed outer tank is small, the scaling amount generated during use is small, and the scaling can be removed after slight vibration, which is easy to disassemble and assemble subsequently.

[0011] The sealing top cover assembly, the sealed outer tank and the overflow inner tank combine to form a stable liquid sealing tank body. The neutralizing water or gas entering the stable liquid sealing tank body will not leak out. Since the sealed outer tank is provided with a first liquid inlet inclined pipe and a second liquid inlet inclined pipe, the overflow inner tank is provided with a first liquid inlet hole corresponding to the first liquid inlet inclined pipe and a second liquid inlet hole corresponding to the second liquid inlet inclined pipe, the lower end of the first liquid outlet inclined pipe is connected with the first liquid inlet inclined pipe, and the upper end of the first liquid outlet inclined pipe is connected with the water outlet pipe of the neutralization reactor. The neutralizing water in the neutralization reactor enters the stable liquid sealing tank through the first liquid inlet inclined pipe and the first liquid inlet hole. Since the lower end of the second liquid outlet inclined pipe is connected with the second liquid inlet inclined pipe, and the upper end of the second liquid outlet inclined pipe is connected with the water outlet pipe of another neutralization reactor, the neutralizing water in the neutralization reactor can also enter the stable liquid sealing tank through the second liquid inlet inclined pipe and the second liquid inlet hole. After the installation of the overflow inner tank is completed, the neutralizing water input by the first liquid inlet inclined pipe enters the overflow inner tank through the first liquid inlet hole, and the neutralizing water input by the second liquid inlet inclined pipe enters the overflow inner tank through the second liquid inlet hole. The two neutralization reactors of the carbon dioxide neutralization and alkaline sewage treatment system can ensure the continuity of the carbon dioxide neutralization and adjustment of the alkaline sewage, and one is used as a standby during work. In addition, the pipeline between the neutralization reactor and the stable liquid sealing tank is designed as a downward inclined pipe (the first liquid outlet inclined pipe and the second liquid outlet inclined pipe), the pipeline between the water outlet pipe of the neutralization reactor and the stable liquid sealing tank is short, and when the neutralizing water enters the stable liquid sealing tank, the residual neutralizing water in the inclined pipe (the first liquid outlet inclined pipe and the second liquid outlet inclined pipe) will flow out of the pipeline due to gravity, reducing the residence time of the neutralizing water in the reactor water outlet pipeline, and reducing the scaling amount of the neutralizing water.

[0012] The upper end of the overflow liquid pipe is lower than the upper end of the outer-overflow inner tank, the lower end of the overflow liquid pipe is communicated with the neutralization water pool, the sealed outer tank is provided with a PH value detector, the sealed outer tank is provided with a backflow liquid pipe, the backflow liquid pipe is provided with a backflow electric valve, the backflow liquid pipe is communicated with the raw water pool, the outer-overflow inner tank is provided with a backflow hole corresponding to the backflow liquid pipe, if the PH value of the neutralization water detected by the PH value detector does not reach the standard, the control system opens the backflow electric valve, the neutralization water in the outer-overflow inner tank flows back to the raw water pool through the backflow hole, the backflow liquid pipe and the backflow electric valve, if the PH value of the neutralization water reaches the standard, the control system closes the backflow electric valve, the liquid level of the neutralization water in the outer-overflow inner tank gradually rises until the neutralization water overflows from the overflow liquid pipe into the neutralization water pool.

[0013] The bottom of the sealed outer tank is provided with a first liquid discharge hole, the bottom of the outer-overflow inner tank is provided with a second liquid discharge hole, the first liquid discharge hole and the second liquid discharge hole are aligned and communicated with the neutralization water pool, when the stable liquid sealing tank stops working and no neutralization water enters the tank, the residual neutralization water in the outer-overflow inner tank directly flows into the neutralization water pool through the second liquid discharge hole and the first liquid discharge hole, so that no residual neutralization water is left in the outer-overflow inner tank and the amount of scale formed by the neutralization water in the stable liquid sealing tank is reduced.

[0014] In conclusion, the stable liquid sealing tank backflow electric valve can be controlled by the PH value detected by the PH value detector, when the PH value does not reach the standard, the backflow electric valve is opened, the neutralization water in the stable liquid sealing tank flows into the raw water pool through the backflow electric valve, when the PH value reaches the standard, the backflow electric valve is closed, the neutralization water in the stable liquid sealing tank flows into the neutralization water pool through the overflow liquid pipe of the outer-overflow inner tank, so that the PH value of the neutralization water entering the neutralization water pool can reach the standard.

[0015] The first liquid discharge hole and the second liquid discharge hole are aligned and communicated with the neutralization water pool, when the stable liquid sealing tank stops working, the liquid stored in the tank directly flows into the neutralization water pool through the second liquid discharge hole and the first liquid discharge hole, so that the neutralization water is prevented from being stored in the stable liquid sealing tank for a long time and the amount of scale formed by the neutralization water is reduced.

[0016] The first liquid inlet inclined pipe and the first liquid outlet inclined pipe are connected with the water outlet pipe of one set of neutralization reactors of the carbon dioxide adjusted alkaline sewage system to form one set of neutralization water outlet pipelines, the second liquid inlet inclined pipe and the second liquid outlet inclined pipe are connected with the water outlet pipe of another set of neutralization reactors of the carbon dioxide adjusted alkaline sewage system to form another set of neutralization water outlet pipelines. The first liquid inlet inclined pipe, the first liquid outlet inclined pipe, the second liquid inlet inclined pipe and the second liquid outlet inclined pipe in the two sets of neutralization water outlet pipelines are all designed as downward inclined pipelines, the outlet pipelines are short and no neutralization water is accumulated in the pipelines when the pipelines stop working, so that the amount of scale formed by the neutralization water on the pipeline wall is reduced.

[0017] Further, the bottom of the outer-overflow inner tank and the sealed outer tank is provided with an anti-rotation structure. The impact force generated when the neutralization water enters the stable liquid sealing tank cannot make the outer-overflow inner tank rotate in the sealed outer tank.

[0018] Further, the bottom of the overflow inner tank is provided with a center positioning boss and an anti-rotation boss, the bottom of the sealed outer tank is provided with a positioning middle hole and an anti-rotation hole, the center positioning boss is located in the positioning middle hole, the anti-rotation boss is located in the anti-rotation hole, and the overflow liquid pipe is coaxially arranged with the center positioning boss and has a middle through hole.

[0019] When the overflow inner tank is installed, the center positioning boss is put into the positioning middle hole of the sealed outer tank, so that the overflow inner tank is concentric with the sealed outer tank, and the installation and disassembly are convenient. The anti-rotation boss of the overflow inner tank is put into the anti-rotation hole of the sealed outer tank, so that the overflow inner tank is prevented from rotating in the sealed outer tank under the impact of the neutralizing water.

[0020] Further, the upper part of the overflow inner tank is fastened by bolts of four groups of fastening bolt groups, respectively screwed into fastening nuts on the overflow inner tank, and the end of the bolt is fastened to the inner wall of the sealed outer tank.

[0021] Since there is a gap between the sealed outer tank and the overflow inner tank, the sealed outer tank and the overflow inner tank are only circumferentially fixed by the four groups of fastening bolt groups, and when the inner tank is taken out, the inner tank can be taken out only by loosening the upper fastening bolt group. After adjusting the upper part of the overflow inner tank to be concentric with the sealed outer tank, the four groups of fastening bolts are tightened, and then the locking nuts are locked to prevent the fastening bolts from loosening during work. When installing, the overflow inner tank is directly put into the sealed outer tank, positioned by the center positioning boss and the positioning middle hole, and anti-rotation by the anti-rotation boss and the anti-rotation hole. The upper part of the overflow inner tank is fastened to the inner wall of the sealed outer tank by the fastening bolt group, and the overflow inner tank is stably fixed in the sealed outer tank. The installation process is simple, the fixing is firm, and the disassembly is convenient.

[0022] Further, in order to ensure that the PH value detector accurately and reliably detects the result of the neutralizing water entering the overflow inner tank, the neutralizing water in the overflow inner tank needs to maintain a stable submerged PH value detector probe liquid level height, the sealed outer tank is provided with a PH value detector mounting boss, the height position of the central axis of the PH value detector mounting boss is higher than that of the central axis of the reflux liquid outlet pipe, and the PH value detector is arranged on the PH value detector mounting boss.

[0023] Further, the sealed top cover assembly is a visual sealed top cover assembly. The fluid in the stable liquid sealed tank and the scaling condition in the tank body can be seen from the outside of the visual sealed top cover assembly.

[0024] Further, the sealed top cover assembly is fixed by bolts and the connecting flange of the sealed outer tank to form a reliable sealed tank.

[0025] Further, in order to facilitate the installation of the pressure transmitter, the sealed outer tank is provided with a pressure transmitter mounting boss, and the pressure transmitter is arranged on the pressure transmitter mounting boss.

[0026] Further, in order to improve the reliability of the installation of the first liquid outlet inclined pipe, the second liquid outlet inclined pipe and the reflux electric valve, the flange of the first liquid outlet inclined pipe is fixedly connected with the flange of the first liquid inlet inclined pipe, the flange of the second liquid outlet inclined pipe is fixedly connected with the flange of the second liquid inlet inclined pipe, and the reflux electric valve is fixedly connected with the reflux liquid outlet pipe through the flange.

[0027] Further, in order to better realize the distribution of the first liquid outlet inclined pipe and the second liquid outlet inclined pipe, in order to improve the structural stability of the overflow liquid outlet pipe and facilitate the operation of the bolt locking outer overflow inner tank, the first liquid inlet hole and the second liquid inlet hole are symmetrically arranged on the sealed outer tank, the upper part of the overflow liquid outlet pipe is fixed on the inner wall of the outer overflow inner tank by four groups of reinforcing angle steels, the locking nut is arranged on the inner wall of the outer overflow inner tank, and the locking nut is located above the reinforcing angle steel.

[0028] The beneficial effects of the present application are: in the technical solution, the outer overflow inner tank is coaxially and detachably arranged in the sealed outer tank, the removable outer overflow inner tank is arranged, the problem that the cleaning time is long and the treatment process is affected after scaling in the sealed outer tank, and the cleaning difficulty problem can be avoided, the main component of scaling is calcium carbonate, the viscosity of calcium carbonate is large, the adhesion on the pipe wall is strong, if the space between the sealed outer tank and the outer overflow inner tank is large, the scaling amount is large, and the inner tank is difficult to take out, in the technical solution, the outer overflow inner tank is coaxially arranged in the sealed outer tank, and a gap is left between the two, the gap between the outer overflow inner tank and the sealed outer tank is small, the scaling amount generated in use is small, the outer overflow inner tank can be taken out after slight vibration after scaling, and the subsequent disassembly and assembly are easy.

[0029] The sealed top cover assembly, the sealed outer tank and the overflow inner tank are combined to form a stable liquid sealed tank, neutralizing water or gas entering the stable liquid sealed tank cannot leak out, because the sealed outer tank is provided with a first liquid inlet inclined pipe and a second liquid inlet inclined pipe, the overflow inner tank is provided with a first liquid inlet hole corresponding to the first liquid inlet inclined pipe and a second liquid inlet hole corresponding to the second liquid inlet inclined pipe, the lower end of the first liquid outlet inclined pipe is connected with the first liquid inlet inclined pipe, the upper end of the first liquid outlet inclined pipe is connected with the water outlet pipe of the neutralizing reactor, the neutralizing water in the neutralizing reactor enters the stable liquid sealed tank through the first liquid inlet inclined pipe and the first liquid inlet hole, because the lower end of the second liquid outlet inclined pipe is connected with the second liquid inlet inclined pipe, and the upper end of the second liquid outlet inclined pipe is connected with the water outlet pipe of another neutralizing reactor, the neutralizing water in the neutralizing reactor can also enter the stable liquid sealed tank through the second liquid inlet inclined pipe and the second liquid inlet hole, after the installation of the overflow inner tank is completed, the neutralizing water input by the first liquid inlet inclined pipe enters the overflow inner tank through the first liquid inlet hole, and the neutralizing water input by the second liquid inlet inclined pipe enters the overflow inner tank through the second liquid inlet hole, the setting of two neutralizing reactors in the carbon dioxide neutralizing and alkaline sewage treatment system can ensure the continuity of carbon dioxide neutralizing and adjusting alkaline sewage, and one of the two neutralizing reactors is used in working while the other one is standby. In addition, the pipeline between the neutralizing reactor and the stable liquid sealed tank is designed as a downward inclined pipe (the first liquid outlet inclined pipe and the second liquid outlet inclined pipe), the pipeline between the water outlet pipe of the neutralizing reactor and the stable liquid sealed tank is short, when the neutralizing water enters the stable liquid sealed tank, the residual neutralizing water in the inclined pipe (the first liquid outlet inclined pipe and the second liquid outlet inclined pipe) will flow out of the pipeline due to the weight, the storage time of the neutralizing water in the water outlet pipeline of the reactor is reduced, and the amount of scale formed by the neutralizing water is small.

[0030] Because the middle part of the overflow inner tank is provided with an upward extending overflow liquid outlet pipe, the upper end of the overflow liquid outlet pipe is lower than the upper end of the overflow inner tank, the lower end of the overflow liquid outlet pipe is communicated with the neutralizing water pool, the sealed outer tank is provided with a PH value detector, the sealed outer tank is provided with a reflux liquid outlet pipe, the reflux liquid outlet pipe is provided with a reflux electric valve, the reflux liquid outlet pipe is communicated with the raw water pool, the overflow inner tank is provided with a reflux hole corresponding to the reflux liquid outlet pipe, if the PH value of the neutralizing water detected by the PH value detector does not reach the standard, the control system opens the reflux electric valve, and the neutralizing water in the overflow inner tank flows back to the raw water pool through the reflux hole, the reflux liquid outlet pipe and the reflux electric valve; if the PH value of the neutralizing water reaches the standard, the control system closes the reflux electric valve, and the liquid level of the neutralizing water in the overflow inner tank gradually rises until the neutralizing water overflows from the overflow liquid outlet pipe into the neutralizing water pool.

[0031] Because the bottom of the sealed outer tank is provided with a first liquid discharge hole, the bottom of the overflow inner tank is provided with a second liquid discharge hole, the first liquid discharge hole and the second liquid discharge hole are aligned and communicated with the neutralizing water pool, when the stable liquid sealed tank stops working and no neutralizing water enters the tank, the residual neutralizing water in the overflow inner tank will directly flow into the neutralizing water pool through the second liquid discharge hole and the first liquid discharge hole, the residual neutralizing water in the overflow inner tank is ensured, and the amount of scale formed by the neutralizing water in the stable liquid sealed tank is reduced.

[0032] In conclusion, the application can control the opening and closing of the reflux electric valve of the stable liquid sealing tank through the detection value of the PH value detector, when the PH value is not up to the standard, the reflux electric valve is opened, the neutralized water in the stable liquid sealing tank flows into the raw water pool through the reflux electric valve, when the PH value is up to the standard, the reflux electric valve is closed, the neutralized water in the stable liquid sealing tank flows into the neutralized water pool from the overflow liquid pipe of the overflow inner tank, which can ensure that the PH value of the neutralized water entering the neutralized water pool is up to the standard.

[0033] Since the first liquid discharge hole and the second liquid discharge hole are aligned and communicate with the neutralized water pool, when the stable liquid sealing tank stops working, the liquid remaining in the tank body directly flows into the neutralized water pool through the second liquid discharge hole and the first liquid discharge hole, preventing the neutralized water from remaining in the stable liquid sealing tank for a long time, and reducing the amount of scale generated.

[0034] Since the first liquid inlet inclined pipe and the first liquid outlet inclined pipe are connected with the water outlet pipe of one set of neutralization reactors of the carbon dioxide adjusted alkaline sewage system to form a set of neutralized water outlet pipelines, and the second liquid inlet inclined pipe and the second liquid outlet inclined pipe are connected with the water outlet pipe of another set of neutralization reactors of the carbon dioxide adjusted alkaline sewage system to form another set of neutralized water outlet pipelines, the first liquid inlet inclined pipe, the first liquid outlet inclined pipe, the second liquid inlet inclined pipe and the second liquid outlet inclined pipe in the two sets of neutralized water outlet pipelines are all designed as downward inclined pipelines, the outlet pipelines are short and no neutralized water is accumulated in the pipelines when the pipelines stop working, which reduces the amount of scale generated on the pipeline wall. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1 It is a structural schematic diagram of the application;

[0036] Figure 2 It is a structural schematic diagram of the installation state of the application and the neutralized water pool;

[0037] Figure 3 It is Figure 2 a local enlarged structural schematic diagram of the position I;

[0038] Figure 4 It is a structural schematic diagram of the water flow state of the application;

[0039] Figure 5 It is a structural schematic diagram of the overflow inner tank in the application;

[0040] Figure 6 It is a front view structural schematic diagram of the application;

[0041] Figure 7 It is a top view structural schematic diagram of the application;

[0042] Figure 8 It is a first sectional view structural schematic diagram of the application;

[0043] Figure 9 It is Figure 8 a local enlarged view of the position A;

[0044] Figure 10 For Figure 8 Local enlarged view at B;

[0045] Figure 11 For the second cross-sectional structure in the present application;

[0046] Figure 12 For the main view structure schematic diagram of the sealed outer tank in the present application;

[0047] Figure 13 For the cross-sectional structure schematic diagram of the overflow inner tank in the present application;

[0048] Figure 14 For the structure schematic diagram of the present application in use.

[0049] In the figure: sealed outer tank 1; connecting flange 1.1; overflow inner tank 2; sealed top cover assembly 3; first liquid outlet inclined pipe 4; second liquid outlet inclined pipe 5; gap 6; first liquid inlet inclined pipe 7; second liquid inlet inclined pipe 8; first liquid inlet hole 9; second liquid inlet hole 10; neutralization reactor 11; overflow liquid outlet pipe 12; neutralization tank 13; PH value detector 14; reflux liquid outlet pipe 15; reflux electric valve 16; raw water tank 17; reflux hole 18; first liquid discharge hole 19; second liquid discharge hole 20; center positioning boss 21; anti-rotation boss 22; positioning middle hole 23; anti-rotation hole 24; middle through hole 25; tight bolt set 26; bolt 27; tight nut 28; PH value detector mounting boss 29; pressure transmitter mounting boss 30; pressure transmitter 31; reinforcing angle steel 32. DETAILED DESCRIPTION

[0050] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the present application will be briefly introduced below in combination with the drawings and the description of the embodiments or the prior art. Obviously, the following description of the drawings structure is only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor. It should be noted that the description of these embodiments is used to help understand the present application, but does not constitute a limitation on the present application.

[0051] Embodiment 1:

[0052] As Figures 1-14 shown, the present embodiment provides a stable liquid sealing tank for adjusting alkaline sewage with carbon dioxide, which comprises a sealed outer tank 1, an overflow inner tank 2, a sealed top cover assembly 3, a first liquid outlet inclined pipe 4 and a second liquid outlet inclined pipe 5. The overflow inner tank 2 is coaxially and detachably arranged in the sealed outer tank 1 with a gap 6 between them, and the sealed top cover assembly 3 is detachably and fixedly connected with the upper end of the sealed outer tank 1.

[0053] The sealing outer tank 1 is provided with a first liquid inlet inclined pipe 7 and a second liquid inlet inclined pipe 8, the outer overflow inner tank 2 is provided with a first liquid inlet hole 9 corresponding to the first liquid inlet inclined pipe 7 and a second liquid inlet hole 10 corresponding to the second liquid inlet inclined pipe 8, the lower end of the first liquid outlet inclined pipe 4 is connected with the first liquid inlet inclined pipe 7, the upper end of the first liquid outlet inclined pipe 4 is connected with a water outlet pipe of a neutralization reactor 11, the lower end of the second liquid outlet inclined pipe 5 is connected with the second liquid inlet inclined pipe 8, and the upper end of the second liquid outlet inclined pipe 5 is connected with a water outlet pipe of another neutralization reactor 11;

[0054] The outer overflow inner tank 2 is provided with an upward extending overflow liquid outlet pipe 12, the upper end of the overflow liquid outlet pipe 12 is lower than the upper end of the outer overflow inner tank 2, the lower end of the overflow liquid outlet pipe 12 is communicated with a neutralization water pool 13, the sealing outer tank 1 is provided with a PH value detector 14, the sealing outer tank 1 is provided with a reflux liquid outlet pipe 15, the reflux liquid outlet pipe 15 is provided with a reflux electric valve 16, the reflux liquid outlet pipe 15 is communicated with a raw water pool 17, and the outer overflow inner tank 2 is provided with a reflux hole 18 corresponding to the reflux liquid outlet pipe 15.

[0055] The bottom of the sealing outer tank 1 is provided with a first liquid outlet hole 19, the bottom of the outer overflow inner tank 2 is provided with a second liquid outlet hole 20, the first liquid outlet hole 19 and the second liquid outlet hole 20 are aligned and communicated with the neutralization water pool 13.

[0056] In the technical scheme, the outer overflow inner tank 2 is coaxially and detachably arranged in the sealing outer tank 1, the outer overflow inner tank 2 is arranged to be removed, so that the problem of long cleaning time and influence on treatment process caused by scaling in the sealing outer tank 1 can be avoided, and the problem of difficult cleaning is also avoided, the main component of scaling is calcium carbonate, the viscosity of calcium carbonate is large, and the adhesion on the pipe wall is strong, if the space between the sealing outer tank 1 and the outer overflow inner tank 2 is large, the scaling amount is large, and the inner tank is difficult to be removed, in the technical scheme, the outer overflow inner tank 2 is coaxially arranged in the sealing outer tank 1 and a gap 6 is left between the two, the gap 6 between the outer overflow inner tank 2 and the sealing outer tank 1 is small, the scaling amount generated in use is small, the outer overflow inner tank 2 can be removed after scaling by slightly vibrating, and the subsequent disassembly and assembly are easy.

[0057] The sealed top cover assembly 3, the sealed outer tank 1 and the outer overflow inner tank 2 are combined to form a stable liquid sealed tank body, neutralizing water or gas entering the stable liquid sealed tank body cannot leak out, because the sealed outer tank 1 is provided with a first liquid inlet inclined pipe 7 and a second liquid inlet inclined pipe 8, the outer overflow inner tank 2 is provided with a first liquid inlet hole 9 corresponding to the first liquid inlet inclined pipe 7 and a second liquid inlet hole 10 corresponding to the second liquid inlet inclined pipe 8, the lower end of the first liquid outlet inclined pipe 4 is connected with the first liquid inlet inclined pipe 7, the upper end of the first liquid outlet inclined pipe 4 is connected with a water outlet pipe of a neutralizing reactor 11, neutralizing water in the neutralizing reactor 11 enters the stable liquid sealed tank through the first liquid inlet inclined pipe 7 and the first liquid inlet hole 9, because the lower end of the second liquid outlet inclined pipe 5 is connected with the second liquid inlet inclined pipe 8 and the upper end of the second liquid outlet inclined pipe 5 is connected with a water outlet pipe of another neutralizing reactor 11, neutralizing water in the another neutralizing reactor 11 can also enter the stable liquid sealed tank through the second liquid inlet inclined pipe 8 and the second liquid inlet hole 10, after the outer overflow inner tank 2 is installed, the neutralizing water input by the first liquid inlet inclined pipe 7 enters the outer overflow inner tank 2 through the first liquid inlet hole 9, the neutralizing water input by the second liquid inlet inclined pipe 8 enters the outer overflow inner tank 2 through the second liquid inlet hole 10, the carbon dioxide neutralizing alkaline sewage treatment system is provided with two neutralizing reactors 11 to ensure the continuity of carbon dioxide neutralizing and adjusting alkaline sewage, and one is used as a standby in working. In addition, the pipeline between the neutralizing reactor 11 and the stable liquid sealed tank is designed as a downward inclined pipe (the first liquid outlet inclined pipe 4 and the second liquid outlet inclined pipe 5), the pipeline between the water outlet pipe of the neutralizing reactor 11 and the stable liquid sealed tank is short, when the neutralizing water enters the stable liquid sealed tank, the residual neutralizing water in the inclined pipe (the first liquid outlet inclined pipe 4 and the second liquid outlet inclined pipe 5) will flow out of the pipeline due to gravity, the residence time of the neutralizing water in the reactor water outlet pipeline is reduced, and the amount of scale formed by the neutralizing water is small.

[0058] Because the middle part of the outer overflow inner tank 2 is provided with an upward extending overflow liquid outlet pipe 12, the upper end of the overflow liquid outlet pipe 12 is lower than the upper end of the outer overflow inner tank 2, the lower end of the overflow liquid outlet pipe 12 is communicated with a neutralizing water pool 13, the sealed outer tank 1 is provided with a PH value detector 14, the sealed outer tank 1 is provided with a reflux liquid outlet pipe 15, the reflux liquid outlet pipe 15 is provided with a reflux electric valve 16, the reflux liquid outlet pipe 15 is communicated with an original water pool 17, the outer overflow inner tank 2 is provided with a reflux hole 18 corresponding to the reflux liquid outlet pipe 15, if the PH value of the neutralizing water detected by the PH value detector 14 does not reach the standard, the control system opens the reflux electric valve 16, the neutralizing water in the outer overflow inner tank 2 flows back to the original water pool 17 through the reflux hole 18, the reflux liquid outlet pipe 15 and the reflux electric valve 16, if the PH value of the neutralizing water reaches the standard, the control system closes the reflux electric valve 16, the liquid level of the neutralizing water in the outer overflow inner tank 2 gradually rises until it overflows from the overflow liquid outlet pipe 12 to the neutralizing water pool 13.

[0059] Since the bottom of the sealed outer tank 1 is provided with the first liquid discharge hole 19, the bottom of the overflow inner tank 2 is provided with the second liquid discharge hole 20, the first liquid discharge hole 19 and the second liquid discharge hole 20 are aligned and communicate with the neutralizing water pool 13, when the stable liquid sealing tank stops working, and no neutralizing water enters the tank, the residual neutralizing water in the overflow inner tank 2 will directly flow into the neutralizing water pool 13 from the second liquid discharge hole 20 and the first liquid discharge hole 19, so that the residual neutralizing water in the overflow inner tank 2 is ensured, and the amount of scale formed by the neutralizing water in the stable liquid sealing tank is reduced.

[0060] In conclusion, the application can control the opening and closing of the stable liquid sealing tank reflux electric valve 16 through the PH value detection instrument 14, when the PH value is not up to standard, the reflux electric valve 16 is opened, and the neutralizing water in the stable liquid sealing tank flows into the raw water pool 17 through the reflux electric valve 16; when the PH value is up to standard, the reflux electric valve 16 is closed, and the neutralizing water in the stable liquid sealing tank flows into the neutralizing water pool 13 from the overflow liquid pipe 12 of the overflow inner tank 2, so that the PH value of the neutralizing water entering the neutralizing water pool 13 is ensured to be up to standard.

[0061] Since the first liquid discharge hole 19 and the second liquid discharge hole 20 are aligned and communicate with the neutralizing water pool 13, when the stable liquid sealing tank stops working, the liquid remaining in the tank body directly flows into the neutralizing water pool 13 through the second liquid discharge hole 20 and the first liquid discharge hole 19, so that the neutralizing water is prevented from remaining in the stable liquid sealing tank for a long time, and the amount of scale formed is small.

[0062] Since the first liquid inlet inclined pipe 7 and the first liquid outlet inclined pipe 4 are connected with the water outlet pipe of one set of neutralizing reactors 11 of the carbon dioxide adjusting alkaline sewage system to form a set of neutralizing water outlet pipe, and the second liquid inlet inclined pipe 8 and the second liquid outlet inclined pipe 5 are connected with the water outlet pipe of another set of neutralizing reactors 11 of the carbon dioxide adjusting alkaline sewage system to form another set of neutralizing water outlet pipe, the first liquid inlet inclined pipe 7, the first liquid outlet inclined pipe 4, the second liquid inlet inclined pipe 8 and the second liquid outlet inclined pipe 5 in the two sets of neutralizing water outlet pipes are all designed as downward inclined pipes, the outlet pipe is short, and there is no residual neutralizing water in the pipe when the stable liquid sealing tank stops working, so that the amount of scale formed by the neutralizing water on the pipe wall is reduced.

[0063] It can be known that the technical scheme solves the problems that the pipe and accessories are blocked in the process of neutralizing alkaline sewage by carbon dioxide, the blockage is difficult to clean, the labor intensity is large, and the normal sewage treatment process is affected.

[0064] Embodiment 2:

[0065] This embodiment is optimized on the basis of the above-mentioned embodiment 1.

[0066] The bottom of the overflow inner tank 2 and the sealed outer tank 1 is provided with an anti-rotation structure. The impact force generated when the neutralizing water enters the stable liquid sealing tank will not make the overflow inner tank 2 rotate in the sealed outer tank 1.

[0067] Embodiment 3:

[0068] This embodiment is optimized on the basis of the above-mentioned embodiment 2.

[0069] The bottom of the outer overflow inner tank 2 is provided with a center positioning boss 21 and an anti-rotation boss 22, the bottom of the sealed outer tank 1 is provided with a positioning middle hole 23 and an anti-rotation hole 24, the center positioning boss 21 is located in the positioning middle hole 23, the anti-rotation boss 22 is located in the anti-rotation hole 24, and the overflow liquid pipe 12 is coaxially arranged with the center positioning boss 21 and has a middle through hole 25.

[0070] When the outer overflow inner tank 2 is installed, the center positioning boss 21 is put into the positioning middle hole 23 of the sealed outer tank 1, so that the outer overflow inner tank 2 is concentric with the sealed outer tank 1, and the installation and disassembly are convenient. The anti-rotation boss 22 of the outer overflow inner tank 2 is put into the anti-rotation hole 24 of the sealed outer tank 1, so that the impact force of the neutralizing water entering the stable liquid sealed tank cannot make the outer overflow inner tank 2 rotate in the sealed outer tank 1.

[0071] Embodiment 4:

[0072] This embodiment is optimized on the basis of the above-mentioned embodiment 3.

[0073] The upper part of the outer overflow inner tank 2 is fastened by the bolts 27 of the four sets of fastening bolt groups 26, which are respectively screwed into the fastening nuts 28 on the outer overflow inner tank 2, and the end of the bolt 27 is fastened to the inner wall of the sealed outer tank 1.

[0074] The upper part of the outer overflow inner tank 2 is fastened by the bolts 27 of the four sets of fastening bolt groups 26, which are respectively screwed into the fastening nuts 28 on the outer overflow inner tank 2 and fastened to the inner wall of the sealed outer tank 1, and then the locking nuts of the fastening bolt groups 26 are locked, so that the outer overflow inner tank 2 is stably fixed in the sealed outer tank 1, and the impact force of the neutralizing water entering the outer overflow inner tank 2 cannot make the outer overflow inner tank 2 shake.

[0075] Since there is a gap 6 between the sealed outer tank 1 and the outer overflow inner tank 2, the sealed outer tank 1 and the outer overflow inner tank 2 are only circumferentially fixed by the four sets of fastening bolt groups 26, and when the inner tank is taken out, only the upper fastening bolt group 26 needs to be loosened to take out the inner tank. After adjusting the upper part of the outer overflow inner tank 2 to be concentric with the sealed outer tank 1, the four sets of fastening bolts 27 are tightened, and then the locking nuts are locked to prevent the fastening bolts 27 from loosening during work. When installing, the outer overflow inner tank 2 is directly put into the sealed outer tank 1, positioned by the center positioning boss 21 and the positioning middle hole 23, and anti-rotated by the anti-rotation boss 22 and the anti-rotation hole 24. The upper part of the outer overflow inner tank 2 is fastened to the inner wall of the sealed outer tank 1 by the fastening bolt groups 26, and the outer overflow inner tank 2 is stably fixed in the sealed outer tank 1. The installation process is simple, the fixing is firm, and the disassembly is convenient.

[0076] Embodiment 5:

[0077] This embodiment is optimized on the basis of the above-mentioned embodiment 1.

[0078] To ensure the accuracy and reliability of the PH value detector 14 in detecting the results of the neutralizing water entering the outer tank 2, the probe liquid level of the PH value detector 14 in the outer tank 2 needs to be kept stable. A PH value detector mounting boss 29 is arranged on the sealing outer tank 1, and the height position of the central axis of the PH value detector mounting boss 29 is higher than the height position of the central axis of the reflux liquid outlet pipe 15. The PH value detector 14 is arranged on the PH value detector mounting boss 29.

[0079] The height of the PH value detector mounting boss 29 of the sealing outer tank 1 and the height of the overflow liquid outlet pipe 12 can be determined by the design flow rate Q of the neutralizing water and the pipe diameter D of the reflux liquid outlet pipe 15. The height position of the PH value detector mounting boss 29 of the sealing outer tank 1 is determined by the height h of the central axis of the PH value detector mounting boss 29 from the central axis of the reflux liquid outlet pipe 15, so that the PH value detector is always submerged in the neutralizing water during the reflux process, and the PH detection value is true and effective. The calculation formula is as follows:

[0080]

[0081] μ—orifice flow coefficient

[0082] Q—design flow rate of neutralizing water, m 3 / s

[0083] D—pipe diameter of reflux liquid outlet pipe, m

[0084] h—height of central axis of PH value detector mounting boss from central axis of reflux liquid outlet pipe, m

[0085] G—acceleration of gravity, m / s 2

[0086] Example 6:

[0087] This embodiment is an optimization based on the above-mentioned embodiment 1.

[0088] The sealing top cover assembly 3 is a visual sealing top cover assembly. From the outside of the visual sealing top cover assembly, the fluid in the stable liquid sealing tank and the scaling condition in the tank body can be seen.

[0089] Example 7:

[0090] This embodiment is an optimization based on the above-mentioned embodiment 1.

[0091] The sealing top cover assembly 3 is fixed to the connecting flange 1.1 of the sealing outer tank 1 by bolts, forming a reliable sealing tank.

[0092] Example 8:

[0093] This embodiment is an optimization based on the above-mentioned embodiment 1.

[0094] In order to facilitate the installation of the pressure transmitter 31, the sealing outer tank 1 is provided with a pressure transmitter mounting boss 30, and the pressure transmitter mounting boss 30 is provided with the pressure transmitter 31.

[0095] Embodiment 9:

[0096] This embodiment is optimized on the basis of the above-mentioned embodiment 1.

[0097] In order to improve the installation reliability of the first liquid outlet inclined pipe 4, the second liquid outlet inclined pipe 5 and the reflux electric valve 16, the flange of the first liquid outlet inclined pipe 4 is fixedly connected with the flange of the first liquid inlet inclined pipe 7, the flange of the second liquid outlet inclined pipe 5 is fixedly connected with the flange of the second liquid inlet inclined pipe 8, and the reflux electric valve 16 is fixedly connected with the reflux liquid outlet pipe 15 through the flange.

[0098] Embodiment 10:

[0099] This embodiment is optimized on the basis of the above-mentioned embodiment 5.

[0100] In order to better realize the distribution of the first liquid outlet inclined pipe 4 and the second liquid outlet inclined pipe 5, and in order to improve the structural stability of the overflow liquid outlet pipe 12 and facilitate the locking of the operation bolt 27 on the outer overflow inner tank 2, the first liquid inlet hole 9 and the second liquid inlet hole 10 are symmetrically arranged on the sealing outer tank 1, the upper part of the overflow liquid outlet pipe 12 is fixed on the inner wall of the outer overflow inner tank 2 by four groups of reinforcing angle steels 32, the locking nut 28 is arranged on the inner wall of the outer overflow inner tank 2, and the locking nut 28 is located above the reinforcing angle steel 32.

[0101] During the working process of the stable liquid sealing tank, only the inner wall of the sealing outer tank 1 and the inner wall and outer wall of the outer overflow inner tank 2 contact the neutralizing water, the gap 6 between the inner wall of the sealing outer tank 1 and the outer wall of the outer overflow inner tank 2 is small, the scale formation is small, and the use will not be affected, and the cleaning is also convenient. The inner wall and the bottom of the outer overflow inner tank 2 contact the neutralizing water, which will cause scale formation. When the scale formation of the outer overflow inner tank 2 is serious, the outer overflow inner tank 2 can be easily removed and replaced with a standby outer overflow inner tank 2. The whole removal and installation are convenient and fast, and will not affect the alkaline sewage treatment. The removed outer overflow inner tank 2 can be cleaned manually or by drug soaking.

[0102] It should be noted that the gap 6 between the sealing outer tank 1 and the outer overflow inner tank 2 is designed to be very small (about 3 mm). Even if scale is formed between the inner wall and the outer wall, the amount of scale is small, and the inner wall can be easily removed by slight vibration. In order to achieve better detection effect, the outer overflow inner tank 2 is provided with through holes corresponding to the pressure transmitter mounting boss 30 and the PH value detector mounting boss 29.

[0103] The technical scheme mainly aims to alleviate the blockage of pipelines and accessories and facilitate scale cleaning, and can set the stable liquid sealing tank for adjusting carbon dioxide alkaline sewage below the neutralization reactor 11, and the stable liquid sealing tank is located on the neutralization water pool 13 for storing neutralization water. The carbon dioxide adjusting alkaline sewage system is provided with two neutralization reactors 11 to ensure the continuity of the process of adjusting carbon dioxide alkaline sewage, and the water outlet pipes of the two neutralization reactors 11 are communicated with the stable liquid sealing tank. The alkaline sewage drawn from the carbon dioxide neutralization raw water pool 17 is neutralized and adjusted in the neutralization reactor 11 of the carbon dioxide adjusting alkaline sewage system, and the neutralization water generated by the neutralization and adjustment is introduced into the stable liquid sealing tank. The stable liquid sealing tank is provided with a PH value detector 14, a pressure transmitter 31 and a backflow electric valve 16. The PH value detector 14 and the pressure transmitter 31 detect the PH value and the pressure of the neutralization water in the stable liquid sealing tank, if the PH value of the neutralization water is not up to the standard, the backflow electric valve 16 is opened, and the neutralization water in the stable liquid sealing tank is backflowed into the raw water pool 17, if the PH value of the neutralization water is up to the standard, the backflow electric valve 16 is closed, and the neutralization water in the stable liquid sealing tank is overflowed into the neutralization water pool 13. In order to ensure the accuracy of the PH value detection, the PH value detector 14 needs to be submerged in enough neutralization water during the whole process of backflow and overflow of the neutralization water, and the unqualified neutralization water cannot enter the neutralization pool from the overflow liquid pipe 12 of the outer overflow inner tank 2 during the backflow of the unqualified neutralization water.

[0104] In order to prevent the unqualified neutralization water from entering the neutralization water pool 13 from the overflow liquid pipe 12 of the outer overflow inner tank 2 during the backflow of the unqualified neutralization water, the height dimension H of the overflow liquid pipe 12 of the outer overflow inner tank 2 from the top of the overflow liquid pipe 12 to the central axis of the backflow hole 18 is determined. The height dimension H is determined according to the orifice constant free flow calculation formula of the design flow Q of the neutralization water and the pipe diameter D of the backflow liquid pipe 15, and the height dimension H should meet the following calculation formula requirements:

[0105]

[0106] μ—orifice flow coefficient

[0107] Q—design flow of neutralization water, m 3 / s

[0108] D—pipe diameter of backflow liquid pipe, m

[0109] H—height from the top of the overflow liquid pipe to the central axis of the backflow hole, m

[0110] G—acceleration of gravity, m / s 2

[0111] Finally, it should be noted that the above is only a preferred embodiment of the present application and is not used to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A liquid stabilizing sealed tank for regulating alkaline wastewater with carbon dioxide, characterized by: It includes a sealed outer tank, an overflow inner tank, a sealed top cover assembly, a first liquid outlet inclined pipe and a second liquid outlet inclined pipe. The overflow inner tank is coaxially and detachably arranged in the sealed outer tank with a gap left between the two. The sealed top cover assembly is detachably and fixedly connected to the upper end of the sealed outer tank. The sealed outer tank is provided with a first liquid inlet inclined tube and a second liquid inlet inclined tube, the overflow inner tank is provided with a first liquid inlet hole corresponding to the first liquid inlet inclined tube and a second liquid inlet hole corresponding to the second liquid inlet inclined tube, the lower end of the first liquid outlet inclined tube is connected to the first liquid inlet inclined tube, the upper end of the first liquid outlet inclined tube is connected to the water outlet pipe of the neutralization reactor, the lower end of the second liquid outlet inclined tube is connected to the second liquid inlet inclined tube, and the upper end of the second liquid outlet inclined tube is connected to the water outlet pipe of another neutralization reactor; An overflow outlet pipe extending upward is provided in the middle of the overflow inner tank, the upper end of the overflow outlet pipe is lower than the upper end of the overflow inner tank, and the lower end of the overflow outlet pipe is connected to the neutralization tank; The sealed outer tank is provided with a pH value detector, the sealed outer tank is provided with a reflux outlet pipe, the reflux outlet pipe is provided with a reflux electric valve, the reflux outlet pipe is connected to the raw water tank, and the overflow inner tank is provided with a reflux hole corresponding to the reflux outlet pipe; A first drainage hole is provided at the bottom of the sealed outer tank, and a second drainage hole is provided at the bottom of the overflow inner tank. The first drainage hole and the second drainage hole are aligned and communicated with the neutralization water tank.

2. The liquid stabilizing sealed tank for regulating alkaline wastewater with carbon dioxide according to claim 1, characterized in that: An anti-rotation structure is provided between the bottom of the overflow inner tank and the sealed outer tank.

3. The liquid stabilizing sealed tank for regulating alkaline sewage with carbon dioxide according to claim 2, characterized in that: The bottom of the overflow inner tank is provided with a central positioning boss and an anti-rotation boss, and the bottom of the sealed outer tank is provided with a positioning middle hole and an anti-rotation hole. The central positioning boss is located in the positioning middle hole, and the anti-rotation boss is located in the anti-rotation hole. The overflow liquid outlet pipe is coaxially arranged with the central positioning boss and is penetrated by a middle through hole.

4. The liquid stabilizing sealed tank for regulating alkaline wastewater with carbon dioxide according to claim 3, characterized in that: The upper part of the overflow inner tank is screwed into the fixing nuts on the overflow inner tank by bolts of four sets of fixing bolts, and the ends of the bolts are fixed to the inner wall of the sealed outer tank.

5. The liquid stabilizing sealed tank for regulating alkaline wastewater with carbon dioxide according to claim 1, characterized in that: The sealed outer tank is provided with a pH detector mounting boss, the center axis of the pH detector mounting boss is higher than the center axis of the reflux outlet pipe, and the pH detector is arranged on the pH detector mounting boss.

6. The liquid stabilizing sealed tank for regulating alkaline wastewater with carbon dioxide according to claim 1, characterized in that: The sealing top cover assembly is a visible sealing top cover assembly.

7. The liquid stabilizing sealed tank for regulating alkaline wastewater with carbon dioxide according to claim 1, characterized in that: The sealing top cover assembly is fixed to the connecting flange of the sealing outer tank by bolts.

8. The liquid stabilizing sealed tank for regulating alkaline wastewater with carbon dioxide according to claim 1, characterized in that: A pressure transmitter mounting boss is provided on the sealed outer tank, and a pressure transmitter is provided on the pressure transmitter mounting boss.

9. The liquid stabilizing sealed tank for regulating alkaline wastewater with carbon dioxide according to claim 1, characterized in that: The flange of the first liquid outlet inclined pipe is fixedly connected to the flange of the first liquid inlet inclined pipe, the flange of the second liquid outlet inclined pipe is fixedly connected to the flange of the second liquid inlet inclined pipe, and the reflux electric valve is fixedly connected to the reflux liquid outlet pipe through the flange.

10. The liquid stabilizing sealed tank for regulating alkaline wastewater with carbon dioxide according to claim 4, characterized in that: The first liquid inlet hole and the second liquid inlet hole are symmetrically arranged on the sealed outer tank. The upper part of the overflow liquid outlet pipe is fixed to the inner wall of the overflow inner tank by four groups of reinforcing angle steels. The fixing nut is arranged on the inner wall of the overflow inner tank, and the fixing nut is located above the reinforcing angle steel.

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