A device based on sludge ferrihydrite recovery to inhibit hydrogen sulfide in pipeline

Abstract

The application discloses a kind of equipment and pipeline sludge water treatment equipment based on sludge water iron ore recovery inhibits pipeline hydrogen sulfide technology, comprising: liquid storage component, for hollow component, liquid storage component is used to temporarily store sludge water;Adsorption device is arranged in the inside of liquid storage component and is used to adsorb iron ore in sludge water, adsorption device opening and closing controllable and is connected with controller;Liquid inlet device, with liquid storage component is communicated by pipeline, liquid inlet device is used to pass into sludge water or clean water in liquid storage component;Liquid outlet, with liquid storage component communication and is used to discharge liquid.The equipment and pipeline sludge water treatment equipment based on sludge water iron ore recovery inhibits pipeline hydrogen sulfide technology provided in the application, pass into sludge water in liquid storage component by liquid inlet device and adsorb iron ore in sludge water by opening adsorption device, pass into clean water and close adsorption device to realize the recovery of iron ore, recycled iron ore can be reused, to be able to be used to process microorganism in pipe network and other sulfur bacteria, reduce pipe network maintenance cost.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sewage treatment, more particularly, to a device for recovering and inhibiting hydrogen sulfide in a pipeline based on sludge water ferrihydrite, and further relates to a pipeline sludge water treatment device comprising the above device. BACKGROUND

[0002] Iron salts, as a common flocculant, can be used for drainage pipeline corrosion and odor management, and removal of H2S in sludge anaerobic digestion. Currently, the measures for inhibiting hydrogen sulfide in the field of municipal and water treatment are mainly divided into two types, namely, direct air injection and iron powder injection. The air injection is generally set as a movable fan. The air is injected into the inspection well of the sewage pipeline network to change the anaerobic environment in the sewage pipeline network and inhibit the generation of hydrogen sulfide.

[0003] The iron powder injection mainly utilizes the oxidation (formula (1)) and precipitation (formula (2)) of sulfides in sewage by iron salts, which has been widely used for controlling sulfides in drainage pipeline networks. In theory, Fe 3+ is reduced to Fe 2+ at the same time of oxidizing sulfides, and continues to form a precipitate with sulfides, so that Fe 3+ has stronger sulfide control ability than Fe 2+ . However, the reaction rate of formula (1) is relatively slow, so when the reaction time is short, the control efficiency of pure Fe 3+ is not high, and the mixed addition of Fe 2+ and Fe 3+ has better control efficiency. In addition, there are 2 points worth noting: 1) the formed sulfide precipitate is FeS, not other forms (such as Fe, S, ); 2) the molecular state of sulfide HS in sewage does not react with iron salts, and the hydrolysis of iron salts reduces the acid-base degree of sewage, causing the H2S content to rise, which is not conducive to the precipitation and removal of sulfides.

[0004] 2Fe 3+ +HS - →2Fe 2+ +S 0 +H + (1)

[0005] Fe 2+ +HS - →FeS+H + (2)

[0006] However, the existing technical means has certain deficiency. The air needs to be set up fan, but the fan is not convenient, and occupies the land, affects the passage, the fan noise is big, the mobile fan is generally diesel drive, influences the environment. The natural ventilation needs to be reformed to the inspection well or the sewage pipe, and the stench overflow is also possible.

[0007] The main problem of the iron powder and other iron products is that the iron products increase the treatment cost of the downstream sewage treatment plant and increase the cost of purchasing the iron products.

[0008] In order to further optimize the use of iron salt and make it a recyclable process, it is necessary to realize the recovery of iron salt at the end of urban drainage system. Experimental research shows that more than 90% of iron is combined in the blue iron ore of digestion sludge whether adding iron or coagulating and precipitating with iron-containing drinking water. In the anaerobic digestion process, the sulfide formed by SRB (Sulfate-Reducing Bacteria, i.e. sulfate-reducing bacteria) reduces the release of Fe2+ in the blue iron ore, but the concentration of sulfate in the digestion tank is limited and will not consume too much blue iron ore. Research has also proved this point. From the mass balance of iron in the experimental process, no matter which iron salt adding method, the iron used for removing sulfide is less than 5% of the total iron in the digestion sludge. This means that most of the iron is not lost in the sewage and sludge treatment process, and its recovery prospect is very promising.

[0009] In summary, how to recover the blue iron ore of digestion sludge and use it for H2S removal in the pipe network is a problem that needs to be solved by the technical personnel in the field. SUMMARY

[0010] Therefore, the purpose of the present application is to provide a device based on sludge water iron ore recovery and inhibition of pipeline hydrogen sulfide technology, which introduces sludge water into the liquid storage component through the liquid inlet device, and recovers the iron ore in the sludge water through the adsorption device.

[0011] Another purpose of the present application is to provide a pipeline sludge water treatment device comprising the above device.

[0012] In order to achieve the above purpose, the present application provides the following technical scheme:

[0013] A device based on sludge water iron ore recovery and inhibition of pipeline hydrogen sulfide technology, comprising:

[0014] The liquid storage component is a hollow component, and the liquid storage component is used for temporarily storing sludge water;

[0015] The adsorption device is arranged in the interior of the liquid storage component and is used for adsorbing the iron ore in the sludge water, the adsorption device is controllable in opening and closing and is connected with the controller;

[0016] The liquid inlet device is in communication with the liquid storage component through a pipeline, and is used for introducing sludge water or clean water into the liquid storage component;

[0017] The liquid outlet is in communication with the liquid storage component and is used for discharging liquid.

[0018] Preferably, the adsorption device comprises an electromagnet plate and an adsorption ball, and the electromagnet plate is electrically connected with the controller.

[0019] Preferably, the liquid storage component comprises a shell and an annular corridor, the annular corridor comprises a plurality of cylindrical members arranged along the same central axis, and the bottom ends of the plurality of cylindrical members are coplanar.

[0020] Preferably, the liquid storage component further comprises a water inlet weir, the water inlet weir is a cylindrical member arranged in the annular corridor, and the water inlet weir is fixedly connected with the shell.

[0021] Preferably, the liquid storage component is provided with at least two and is in communication with the same liquid inlet device, and the at least two liquid storage components are in communication with the liquid outlet;

[0022] The controller is used for controlling only one adsorption device to work at the same time, so that the at least two liquid storage components respectively perform the adsorption process and the recovery process of the iron ore in the sludge water at the same time.

[0023] Preferably, a valve is arranged on the pipeline between the liquid inlet device and the two liquid storage components, and the valve is electrically connected with the controller.

[0024] The controller is used for controlling the two valves to work respectively, so that one of the two valves is opened and the other is closed.

[0025] Preferably, a stirring device is arranged in the liquid storage component, a stirring end of the stirring device extends into the annular corridor and is used for stirring the liquid in the annular corridor.

[0026] Preferably, a central water outlet pipeline and a filter opening are arranged between the annular corridor and the liquid outlet pipeline.

[0027] Preferably, the liquid storage device is a cylindrical member, the central water outlet pipeline is arranged along the central axis of the liquid storage device, the annular corridor comprises a plurality of cylindrical members arranged along the same central axis, the central axis of the plurality of cylindrical members penetrates the central water outlet pipeline, the bottom ends of the plurality of cylindrical members are coplanar, the water inlet weir is a cylindrical member arranged at the opening end of the annular corridor, and the opening direction of the water inlet weir is opposite to the opening direction of the annular corridor.

[0028] A pipeline sludge water treatment device comprises a device based on sludge water iron ore recovery and pipeline hydrogen sulfide inhibition technology, and the device based on sludge water iron ore recovery and pipeline hydrogen sulfide inhibition technology is any one of the devices based on sludge water iron ore recovery and pipeline hydrogen sulfide inhibition technology.

[0029] The application provides a device based on sludge water iron ore recovery and inhibition of pipeline hydrogen sulfide technology, sludge water is introduced into a liquid storage component through a liquid inlet device, and iron ore in the sludge water is recovered through an adsorption device in the liquid storage component, after the adsorption process of the iron ore in the sludge water is completed, clean water is introduced into the liquid storage component through the liquid inlet device, at this time, the adsorption device is closed, the iron adsorbed on the surface of the adsorption device is removed and precipitated through hydraulic flushing and friction, and finally is discharged from a liquid outlet, the recovery of the iron ore is completed, and the recovered liquid can be directly introduced into the upstream of a sewage pipeline and used for harmful gas treatment in the sewage pipeline or is recovered again after other purification processes. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only constitute a part of the embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor based on the provided drawings.

[0031] Figure 1 It is a front view of the device based on sludge water iron ore recovery and inhibition of pipeline hydrogen sulfide technology provided by the present application.

[0032] Figure 2 It is a bottom view of the device based on sludge water iron ore recovery and inhibition of pipeline hydrogen sulfide technology provided by the present application.

[0033] Figure 3 It is a schematic diagram of the liquid flow path in the device based on sludge water iron ore recovery and inhibition of pipeline hydrogen sulfide technology provided by the present application.

[0034] Figure 4 It is a structural schematic diagram of the adsorption ball provided by the present application.

[0035] Figures 1 to 4 In the drawings, the reference signs include:

[0036] 1 is a liquid storage component, 2 is an adsorption device, 3 is a liquid inlet device, 4 is a liquid outlet, 5 is an adsorption ball, 6 is an annular corridor, 7 is a water inlet weir, 8 is a stirring device, 9 is a central water outlet pipeline, and 10 is a filter port. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments only constitute a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0038] The core of the present application is to provide a device based on sludge water iron ore recovery to inhibit pipeline hydrogen sulfide technology, which can complete the recovery of iron ore in sludge water.

[0039] Another core of the present application is to provide a sludge water pipeline treatment device comprising the above device.

[0040] Please refer to the accompanying Figure 1 to the accompanying Figure 4 , the present application provides a device based on sludge water iron ore recovery to inhibit pipeline hydrogen sulfide technology, which comprises a liquid storage component 1, an adsorption device 2, a liquid inlet device 3 and a liquid outlet 4. The liquid storage component 1 is a hollow component and is used for temporarily storing sludge water. The adsorption device 2 is arranged inside the liquid storage component 1 and is used for adsorbing iron ore in the sludge water. The adsorption device 2 is controllable in opening and closing and is connected with a controller. The liquid inlet device 3 is in communication with the liquid storage component 1 through a pipeline and is used for introducing sludge water or clean water into the liquid storage component 1. The liquid outlet 4 is in communication with the liquid storage component 1 and is used for discharging liquid.

[0041] Specifically, the liquid inlet device 3 is in communication with the liquid storage component 1, sludge water is introduced into the liquid storage component 1 through the liquid inlet device 3, the adsorption device 2 in the liquid storage component 1 is opened, the iron ore in the sludge water is adsorbed and recovered through the adsorption device 2, after the adsorption process is completed, clean water is introduced into the liquid storage component 1 through the liquid inlet device 3, the adsorption device 2 is closed when the clean water is introduced, the iron on the surface of the adsorption device 2 is washed by the clean water, and the recovered liquid is discharged through the liquid outlet 4. The recovered liquid is rich in a large amount of iron ore, and the blue iron ore is generally deposited at the bottom. After the recovered liquid is statically settled and drained, the iron ore can be coarsely extracted, and the coarsely extracted iron ore can be directly put into the upstream of the sewage pipeline to control the content of hydrogen sulfide in the sewage pipeline, or can be recovered and utilized after being purified by alkali washing, thereby reducing the cost of sewage treatment.

[0042] On the basis of the above embodiment, the adsorption device 2 comprises an electromagnet plate and an adsorption ball 5, and the electromagnet plate is electrically connected with the controller.

[0043] Specifically, the adsorption ball 5 is preferably a rubidium magnet ball. In order to improve the adsorption effect of the adsorption ball 5, a film coating treatment can be performed on the surface of the rubidium magnet ball. The structure of the rubidium magnet ball can refer to the accompanying Figure 4 The electromagnet plate is electrically connected with the controller and can be opened and closed at any time through the controller. Through the cooperation of the electromagnet plate and the rubidium magnet ball, the recovery effect of the iron ore in the sludge water can be improved.

[0044] On the basis of the above embodiment, the liquid storage component 1 comprises a shell and an annular corridor 6. The annular corridor 6 comprises a plurality of cylindrical members arranged in a line along the center axis, and the bottom ends of the plurality of cylindrical members are coplanar.

[0045] Specifically, the liquid storage component 1 comprises an outermost shell and an inner annular gallery 6, the annular gallery 6 comprises a plurality of cylindrical members arranged in line with the central axis, and the outer periphery of each cylindrical member is provided with a certain notch, and the specific structure can refer to the attached Figure 1 , so that the liquid in the annular gallery 6 can flow along a certain path, and the flow path can refer to the attached Figure 3 , to ensure that the sludge water or clean water fully contacts the adsorption device 2 after entering the annular gallery 6, and finally overflows the liquid from the water outlet at the center of the annular gallery 6.

[0046] On the basis of the above embodiment, the liquid storage component 1 further comprises a water inlet weir 7, the water inlet weir 7 is a cylindrical member buckled on the annular gallery 6, and the water inlet weir 7 is fixedly connected with the shell.

[0047] Specifically, the water inlet weir 7 is a cylindrical member buckled on the shell, the liquid inlet device 3, the sludge water or clean water is introduced into the water inlet weir 7, and the sludge water or clean water is introduced into the annular gallery 6 from the water inlet weir 7, which can make the liquid inlet amount in the annular gallery 6 uniform, and the sludge water or clean water can fully contact the adsorption device 2 after entering the annular gallery 6, and the recovery efficiency of iron ore is maximized.

[0048] On the basis of the above embodiment, the liquid storage component 1 is provided with at least two and is communicated with the same liquid inlet device 3, and the at least two liquid storage components 1 are communicated with the liquid outlet 4; the controller is used to control only one adsorption device 2 to work at the same time, so that the at least two liquid storage components 1 respectively perform the adsorption process and the recovery process of the iron ore in the sludge water at the same time.

[0049] Specifically, the liquid storage component 1 is provided with at least two, the at least two liquid storage components 1 are arranged in parallel, and the adsorption devices 2 in the at least two liquid storage components 1 are connected with the controller, and the opening and closing of the adsorption devices 2 is controlled by the controller at the same time, so that the liquid storage components 1 respectively perform the adsorption process and the recovery process without interference, and the liquid inlet device 3 can continuously introduce the sludge water or clean water into the liquid storage component 1, so as to ensure the recovery efficiency of the iron in the sludge water.

[0050] Optionally, the liquid inlet device 3 can be provided with a plurality of pipes, and the sludge water or clean water is introduced into the liquid storage component 1 through the separately arranged pipes, so as to prevent the interference between the plurality of liquid storage components 1 when feeding.

[0051] On the basis of the above embodiment, the pipes between the liquid inlet device 3 and the two liquid storage components 1 are provided with valves, and the valves are electrically connected with the controller; the controller is used to control the two valves to work respectively, so that one of the two valves is opened and the other is closed.

[0052] Specifically, a valve is arranged on the pipeline between the liquid inlet device 3 and the plurality of liquid storage components 1, and the opening and closing of the valve is controlled by the controller. When the liquid inlet device 3 introduces sludge water into the liquid storage component 1 in the adsorption process, the corresponding valve is opened by the controller, and the other valves are closed by the controller to prevent the liquid storage components 1 in different processes from being affected when the pipelines are shared.

[0053] On the basis of the above embodiment, the liquid storage component 1 is provided with a stirring device 8, and the stirring end of the stirring device 8 extends into the annular corridor 6 and is used for stirring the liquid in the annular corridor 6.

[0054] Specifically, the liquid storage component 1 is provided with a stirring device 8, and the stirring end of the stirring device 8 extends into the annular corridor 6. The movement of the stirring device 8 can ensure that the liquid is in full contact with the electromagnet plate and the adsorption ball 5. When the adsorption device 2 is in the working state, the stirring device 8 can make the iron ore in the sludge water fully contact with the adsorption device 2, so as to improve the recovery rate of the iron ore. When the adsorption device 2 is in the closed state, the rotation of the stirring device 8 can make the clean water fully mix and rub with the adsorption device 2, so as to improve the cleaning effect of the clean water on the surface of the adsorption device 2.

[0055] On the basis of the above embodiment, the annular corridor 6 and the liquid outlet pipe 4 are provided with a central water outlet pipeline 9 and a filter opening 10.

[0056] Specifically, the central water outlet pipeline 9 is arranged at the middle part of the annular corridor 6. The liquid enters the annular corridor 6 from the water inlet weir 7, and gradually flows from the outer periphery to the center, so as to ensure that the liquid is in full contact with the adsorption device 2, and finally is discharged from the central water outlet pipeline 9. The filter opening 10 is arranged between the central water outlet pipeline 9 and the liquid outlet pipe 4, and the filter opening 10 can prevent the adsorption ball 5 from escaping.

[0057] On the basis of the above embodiment, the liquid storage device 1 is a columnar member, the central water outlet pipeline 9 is collinear with the central axis of the liquid storage device 1, the annular corridor 6 includes a plurality of cylindrical members arranged collinearly with the central axis, the central water outlet pipeline 9 is penetrated by the central axis, and the bottom ends of the plurality of cylindrical members are coplanar. The water inlet weir 7 is a cylindrical member arranged at the opening end of the annular corridor 6, and the opening direction of the water inlet weir 7 is opposite to the opening direction of the annular corridor 6.

[0058] Specifically, the central water outlet pipeline 9 is collinear with the central axis of the liquid storage device 1, the annular corridor 6 includes a plurality of cylindrical members with coplanar bottom ends, and the annular corridor 6 is provided with an opening on the side wall of the inner cylindrical member, so that the liquid can flow along the specified path as shown in the accompanying drawings. Figure 3

[0059] ​In addition to the above-mentioned equipment based on sludge water iron ore recovery and inhibition of pipeline hydrogen sulfide technology, the present application also provides a pipeline sludge water treatment equipment comprising the equipment disclosed in the above-mentioned embodiments, and the structures of other parts of the pipeline sludge water treatment equipment refer to the prior art, which will not be described herein.

[0060] The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0061] The above provides a detailed introduction to the equipment based on sludge water iron ore recovery and inhibition of pipeline hydrogen sulfide technology and the pipeline sludge water treatment equipment provided with the equipment. The principles and implementation modes of the present application are described by applying specific examples. The above-mentioned embodiment is only used to help understand the method and core idea of the present application. It should be pointed out that the ordinary skilled in the art can make some improvements and modifications to the present application without departing from the principles of the present application. These improvements and modifications also fall within the protection scope of the claims of the present application.

Claims

1. An apparatus for recovering hydrogen sulfide from a pipeline based on sludge ferrihydrite inhibition technology, characterized by, The application relates to a device for recovering iron ore in sludge water and inhibiting hydrogen sulfide in pipeline sulfurization technology. The device comprises a liquid storage component (1) which is a hollow component and is used for temporarily storing sludge water; an adsorption device (2) which is arranged in the liquid storage component (1) and is used for adsorbing iron ore in the sludge water, the adsorption device (2) is controllable in opening and closing and is connected with a controller; a liquid inlet device (3) which is communicated with the liquid storage component (1) through a pipeline, and is used for feeding sludge water or clean water into the liquid storage component (1); and a liquid outlet (4) which is communicated with the liquid storage component (1) and is used for discharging liquid. The adsorption device (2) comprises an electromagnet plate and an adsorption ball (5), and the electromagnet plate is electrically connected with the controller. The liquid storage component (1) comprises a shell and an annular corridor (6), the annular corridor (6) comprises a plurality of cylindrical members which are arranged along the same central axis, and the bottom ends of the plurality of cylindrical members are coplanar. The outer periphery of each cylindrical member is provided with a notch. The liquid storage component (1) further comprises a water inlet weir (7) which is a cylindrical member buckled on the cylindrical member of the annular corridor (6), and the water inlet weir (7) is fixedly connected with the shell. The liquid storage component (1) is provided with a stirring device (8), the stirring end of the stirring device (8) extends into the annular corridor (6) and is used for stirring liquid in the annular corridor (6). The annular corridor (6) and the liquid outlet (4) are provided with a central water outlet pipeline (9) and a filter opening (10). The adsorption ball (5) is a rubidium magnet ball. The liquid storage component (1) is provided with at least two liquid storage components which are communicated with the same liquid inlet device (3), and the at least two liquid storage components (1) are communicated with the liquid outlet (4). The controller is used for controlling only one adsorption device (2) to work at the same time, so that the at least two liquid storage components (1) respectively perform the adsorption process and the recovery process of the iron ore in the sludge water at the same time. Valves are arranged on the pipelines between the liquid inlet device (3) and the two liquid storage components (1), and the valves are electrically connected with the controller.

2. The apparatus based on sludge ferrihydrite recovery inhibition pipeline hydrogen sulfide technology according to claim 1, characterized in that, The controller is used for controlling the two valves to work respectively, so that one valve is opened and the other valve is closed. The liquid storage component (1) is a cylindrical member, the central water outlet pipeline (9) is arranged along the central axis of the liquid storage component (1), the annular corridor (6) comprises a plurality of cylindrical members which are arranged along the same central axis and the central water outlet pipeline (9) is penetrated by the central axis, the water inlet weir (7) is a cylindrical member arranged at the opening end of the annular corridor (6), and the opening direction of the water inlet weir (7) is opposite to the opening direction of the annular corridor (6).

3. The apparatus based on the technology of sludge ferrihydrite recovery inhibition of hydrogen sulfide in pipelines according to claim 2, characterized in that, The device for recovering iron ore in sludge water and inhibiting hydrogen sulfide in pipeline sulfurization technology is the device as claimed in any one of claims 1 to 4. ​ 4. The apparatus based on sludge ferrihydrite recovery inhibition pipeline hydrogen sulfide technology according to claim 1, characterized in that, ​ 5. A pipeline sludge water treatment apparatus comprising an apparatus based on the technology of sludge water iron ore recovery to inhibit pipeline hydrogen sulfide, characterized by, ​

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