Automatically-controlled activated carbon adding device for sewage treatment

Abstract

The utility model discloses an automatically-controlled activated carbon feeding device for sewage treatment. The automatically-controlled activated carbon feeding device comprises a hopper (1), a spiral conveyor (2), a jet device (3), an online TOC (Total Organic Carbon) measuring instrument (9) and a sewage treatment tank (14), a second material outlet end is formed in the hopper (1), a third material inlet end and a third material outlet end are formed in the spiral conveyor (2), the third material inlet end of the spiral conveyor (2) is connected with the second material outlet end of the hopper (1), and the third material outlet end of the spiral conveyor (2) is connected with a dosing port of the jet device (3). The activated carbon adding device realizes the effect of regulating and controlling the adding amount of activated carbon according to water quality during sewage treatment, is beneficial to promoting the standardized and intelligent process of sewage treatment, reduces the using amount of activated carbon and saves the cost.

Description

Technical Field

[0001] The utility model relates to the field of sewage treatment, in particular to an automatically controlled activated carbon dosing device for sewage treatment. Background Art

[0002] Activated carbon is a specially treated carbon. Organic raw materials (fruit shells, coal, wood, etc.) are heated in an airtight condition to reduce non-carbon components, and then react with gas to erode the surface and produce a well-developed microporous structure. Activated carbon adsorption uses the solid surface of activated carbon to adsorb one or more substances in water to achieve the purpose of purifying water quality.

[0003] In recent years, powdered activated carbon has been widely used in the field of sewage treatment. It mainly removes various pollutants in wastewater through physical adsorption, chemical adsorption, oxidation, catalytic oxidation and reduction. The addition methods are divided into "dry addition" and "wet addition". "Wet addition" is to prepare powdered activated carbon into a suspension emulsion and then add it quantitatively. It is a commonly used method in the water treatment industry. The mass fraction of the suspension emulsion is usually about 5% to ensure that the activated carbon can be evenly dispersed in the water. Although "wet addition" can avoid dust pollution, the construction and operation costs of "wet addition" are very high. "Dry addition" is to add dry powdered activated carbon directly into the water when using it. Less equipment is required, so the construction and operation costs are very low, but there are inevitable disadvantages such as easy blockage of pipelines and waste caused by quantitative addition of activated carbon. Utility Model Content

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the utility model is to provide an automatically controlled activated carbon dosing device for sewage treatment, which is used to provide a new activated carbon dosing device for sewage treatment to reduce the TOC value of sewage.

[0005] In order to achieve the above-mentioned purpose and other related purposes, the utility model provides a sewage treatment device.

[0006] The utility model provides an automatically controlled activated carbon dosing device for sewage treatment, comprising a hopper, a screw conveyor, an ejector, an online TOC measuring instrument and a sewage treatment tank;

[0007] The hopper (1) is formed with a second material outlet end, the screw conveyor is formed with a third material inlet end and a third material outlet end, the third material inlet end of the screw conveyor is connected to the second material outlet end of the hopper, and the third material outlet end of the screw conveyor is connected to the dosing port of the ejector; the material outlet of the ejector is connected to the material of the sewage treatment tank; the online TOC measuring instrument is arranged in the sewage treatment tank; the online TOC measuring instrument is connected to the screw conveyor signal.

[0008] In one embodiment, it includes a feeding pipe, and the hopper is connected to the feeding pipe; the feeding pipe is formed with a first feeding end and a first discharging end, and a first sealed channel is formed between the first feeding end and the first discharging end; the hopper is formed with a second material inlet end, and a second sealed channel is formed between the second material inlet end and the second material outlet end.

[0009] In one embodiment, the hopper is provided with a vacuum pump for extracting air from the hopper to provide negative pressure.

[0010] In one embodiment, a first pipeline is further included, and the material outlet of the screw conveyor is connected to the dosing port of the ejector through the first pipeline.

[0011] In one embodiment, a discharge valve is provided on the first pipeline.

[0012] In one embodiment, the material outlet of the hopper is located at the bottom end, and the bottom end is sealedly connected to the feed port of the screw conveyor; and / or, a discharge valve is provided at the second material outlet end of the hopper.

[0013] In one embodiment, a control component is further included, the screw conveyor includes a variable frequency motor, the control component is connected to the variable frequency motor signal, and the control component is connected to the online TOC measuring instrument signal.

[0014] In one embodiment, a material level detector is provided on the hopper, and the control component is connected to the material level detector by signal.

[0015] In one embodiment, the activated carbon dosing device further comprises a first pipeline, and the material outlet of the screw conveyor is connected to the dosing port of the ejector through the first pipeline.

[0016] In one embodiment, a discharge valve is provided on the first pipeline.

[0017] In one embodiment, the activated carbon dosing device also includes a sewage input pipe and a sewage output pipe; the water inlet of the ejector is connected to the sewage input pipe, and the water outlet of the ejector is connected to the sewage output pipe; the water outlet end of the sewage output pipe is connected to the material in the sewage treatment pool.

[0018] In one embodiment, the sewage input pipeline is provided with a water inlet pump and / or a water inlet valve.

[0019] As described above, the automatic activated carbon dosing device for sewage treatment of the utility model has the following beneficial effects:

[0020] 1. The control component automatically controls the amount of activated carbon delivered by the screw conveyor according to the water quality of the sewage in the sewage treatment pool 14, realizing the function of automatically controlling the amount of activated carbon added according to the water quality during sewage treatment, which is conducive to promoting the standardization and intelligent process of sewage treatment, and also reduces the amount of activated carbon used, saving costs;

[0021] 2. The continuous addition of activated carbon is realized, and the dust pollution and easy pipe clogging caused by the addition and mixing of activated carbon are avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 Shown is a schematic structural diagram of an automatically controlled activated carbon dosing device for sewage treatment according to the utility model.

[0023] Description of Reference Numerals

[0024] 1 hopper 2 Screw Conveyor 21 Frequency conversion motor 3 Ejector 4 Sewage input pipeline 5 Feeding pipe 6 Vacuum Pump 7 Inlet pump 8 First pipeline 9 Online TOC Meter 11 Water inlet valve 12 Sewage output pipeline 13 Feeding valve 14 Sewage treatment tank DETAILED DESCRIPTION

[0025] The following is a description of the implementation of the present invention by means of specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0026] See also Figure 1 It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings in this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the utility model, so they have no substantial technical significance. Any modification of the structure, change in the proportion relationship, or adjustment of the size should still fall within the scope of the technical content disclosed by the utility model without affecting the effects and purposes that can be achieved by the utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the utility model. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the utility model without substantially changing the technical content.

[0027] like Figure 1As shown, the utility model provides an automatically controlled activated carbon dosing device for sewage treatment, comprising a hopper 1, a screw conveyor 2, an ejector 3, an online TOC measuring instrument 9 and a sewage treatment tank 14; the hopper 1 is formed with a second material outlet end, the screw conveyor 2 is formed with a third material inlet end and a third material outlet end, the third material inlet end of the screw conveyor 2 is connected to the second material outlet end of the hopper 1, and the third material outlet end of the screw conveyor 2 is connected to the dosing port of the ejector 3; the material outlet of the ejector 3 is connected to the material of the sewage treatment tank 14; the online TOC measuring instrument 9 is arranged in the sewage treatment tank 14; the online TOC measuring instrument 9 is connected to the screw conveyor 2 signal.

[0028] In a Figure 1 In the specific embodiment shown, a control component is also included, and the screw conveyor 2 includes a variable frequency motor 21, and the control component is signal-connected to the variable frequency motor 21. The variable frequency motor 21 receives the signal of the control component and adjusts the material conveying amount of the screw conveyor 2 by adjusting the speed of the variable frequency motor 21.

[0029] In the above embodiment, the online TOC measuring instrument 9 detects the TOC value of the sewage online and feeds the information back to the control component. The control component controls the speed of the variable frequency motor 21 according to the received TOC value, thereby adjusting the material conveying amount of the screw conveyor 2 and adjusting the amount of activated carbon added. Generally speaking, if the TOC value is high, the control component adjusts the speed of the variable frequency motor 21 to increase; if the TOC value is low, the control component adjusts the speed of the variable frequency motor 21 to decrease or stop. It is achieved that the amount of activated carbon added is controlled according to the water quality during sewage treatment, which is conducive to promoting the standardization and intelligent process of sewage treatment, and it not only ensures that the TOC of sewage is stable and meets the standards, but also saves labor and material costs.

[0030] In a more specific embodiment, a material level detector is provided on the hopper 1, and the control component is connected to the material level detector by signal.

[0031] The material level detector is used to monitor the material level in the hopper 1 and feed back the material level information to the control component. The control component compares the obtained material level information with the set material level. When the material level information is lower than the set material level, an alarm message indicating that material needs to be added is sent. The alarm message can be one or more of text, sound and vibration.

[0032] In a Figure 1In the specific embodiment shown, it includes a feeding pipe 5, and the hopper 1 is connected to the feeding pipe 5; the feeding pipe 5 is formed with a first feeding end and a first discharging end, and a first sealed channel is formed between the first feeding end and the first discharging end; the hopper 1 is formed with a second material inlet end, and a second sealed channel is formed between the second material inlet end and the second material outlet end.

[0033] In the above embodiment, when feeding, the hopper 1 and the feeding pipe 5 are closed to avoid dust pollution at the activated carbon feeding site.

[0034] In a Figure 1 In the more specific embodiment shown, a feeding valve 13 is provided on the feeding pipeline 5 .

[0035] In a Figure 1 In the more specific embodiment shown, the hopper 1 is provided with a vacuum pump 6 for extracting air from the hopper 1 to provide negative pressure.

[0036] In the above embodiment, during loading, the centrifugal pump in the activated carbon tanker rolls up the activated carbon in the activated carbon tanker, and transports the activated carbon powder to the hopper 1 in a negative pressure state through the loading pipe 5, so as to realize closed unloading and avoid dust pollution at the activated carbon feeding site.

[0037] In a specific embodiment, the material outlet of the hopper 1 is located at the bottom, and the bottom is sealed and connected to the feed port of the screw conveyor 2. This prevents air from entering the hopper 1 during feeding, thereby affecting the feeding; and also prevents dust pollution at the activated carbon feeding site.

[0038] In a specific embodiment, a discharge valve is provided at the second material outlet end of the hopper 1. The discharge valve is used to control the opening and closing of the hopper discharge port. When loading, the discharge valve is closed to make the interior of the hopper 1, the loading pipeline 5, and the interior of the activated carbon tank truck closed as a whole, and the activated carbon is driven to flow by the flow of gas, and the activated carbon is transferred to the negative pressure hopper 1.

[0039] In a specific embodiment, a gravity sensor is provided at the bottom of the hopper 1. The gravity sensor is used to monitor the weight of the material in the hopper 1.

[0040] In a Figure 1 In the specific embodiment shown, the activated carbon dosing device further includes a first pipe 8, and the material outlet of the screw conveyor 2 is connected to the dosing port of the ejector 3 through the first pipe 8. The screw conveyor 2 conveys the material in the hopper 1 to the ejector 3 through the first pipe 8 to mix with the sewage.

[0041] In a more specific embodiment, the first pipeline 8 is provided with a discharge valve.

[0042] In a Figure 1 In the specific embodiment shown, the activated carbon dosing device also includes a sewage input pipe 4 and a sewage output pipe 12; the water inlet of the ejector 3 is connected to the sewage input pipe 4, and the water outlet of the ejector 3 is connected to the sewage output pipe 12; the water outlet end of the sewage output pipe 12 is connected to the material of the sewage treatment tank 14.

[0043] In a Figure 1 In the more specific embodiment shown, the sewage input pipe 4 is provided with a water inlet pump 7 and / or a water inlet valve 11. The water inlet pump 7 is used to provide pressurized water to enter the ejector 3.

[0044] like Figure 1 The activated carbon dosing device shown includes the following steps when treating sewage:

[0045] The material level detector monitors the material level in the hopper 1 and feeds the material level information back to the control component. The control component compares the obtained material level information with the set material level. When the material level information is lower than the set material level, an alarm message indicating that material needs to be loaded is sent. After receiving the alarm, the vacuum pump 6 is manually turned on. When the hopper 1 is in a negative pressure state, the vacuum pump 6 is turned off. The loading pipe 5 is connected to the output pipe of the activated carbon tank truck. The loading valve 13 on the loading pipe 5 and the centrifugal pump in the activated carbon tank truck are opened to transport the activated carbon in the activated carbon tank truck to the hopper 1 through the loading pipe 5 by air delivery. When the alarm component is turned off, it means that the material level in the hopper 1 is higher than the set material level. This operation ensures that there is activated carbon in the hopper 1.

[0046] During specific treatment, the water inlet pump 7 and the water inlet valve 11 on the sewage input pipe 4 are turned on, and the sewage enters the sewage treatment tank 14 through the ejector 3. After negative pressure is formed inside the ejector 3, the discharge valve on the first pipe 8 is opened. The discharge valve of the hopper 1 is opened with a delay, and the activated carbon in the hopper 1 is transported to the ejector 3 through the screw conveyor 2, and a gas-solid-liquid mixture is formed inside the ejector 3, and enters the sewage treatment tank 14 through the sewage output pipe 12.

[0047] During the sewage treatment process, the online TOC measuring instrument 9 detects the TOC value of the sewage online, such as monitoring every 15 minutes, 30 minutes or 60 minutes; and feeds back the information to the control component. The control component determines the change of the TOC measured value within a unit time based on the received information, such as the unit time can be 0.5h, 1.0h, 1.5h or 2h, and transmits a signal to the variable frequency motor 21. The variable frequency motor 21 adjusts the speed according to the received information, thereby adjusting the material conveying amount of the screw conveyor 2 and adjusting the amount of activated carbon added.

[0048] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. An automatically controlled activated carbon dosing device for sewage treatment, characterized in that: The invention comprises a hopper (1), a screw conveyor (2), an ejector (3), an online TOC measuring instrument (9) and a sewage treatment tank (14); the hopper (1) is formed with a second material outlet end, the screw conveyor (2) is formed with a third material inlet end and a third material outlet end, the third material inlet end of the screw conveyor (2) is connected to the second material outlet end of the hopper (1), and the third material outlet end of the screw conveyor (2) is connected to the dosing port of the ejector (3); the material outlet of the ejector (3) is in material communication with the sewage treatment tank (14); the online TOC measuring instrument (9) is arranged in the sewage treatment tank (14); and the online TOC measuring instrument (9) is signal-connected to the screw conveyor (2).

2. The activated carbon dosing device according to claim 1, characterized in that: The hopper (1) comprises a feeding pipe (5), the feeding pipe (5) being connected to the feeding pipe (5); the feeding pipe (5) is formed with a first feeding end and a first discharging end, and a first sealed channel is formed between the first feeding end and the first discharging end; the hopper (1) is formed with a second material inlet end, and a second sealed channel is formed between the second material inlet end and the second material outlet end.

3. The activated carbon dosing device according to claim 2, characterized in that: The hopper (1) is provided with a vacuum pump (6) for extracting air from the hopper (1) to provide negative pressure.

4. The activated carbon dosing device according to claim 1, characterized in that: The material outlet of the hopper (1) is located at the bottom end, and the bottom end is sealedly connected to the feed inlet of the screw conveyor (2); and / or, a discharge valve is provided at the second material outlet end of the hopper (1).

5. The activated carbon dosing device according to claim 1, characterized in that: It also includes a control component, the screw conveyor (2) includes a variable frequency motor (21), the control component is connected to the variable frequency motor (21) by signal, and the control component is connected to the online TOC measuring instrument (9) by signal.

6. The activated carbon dosing device according to claim 5, characterized in that: The hopper (1) is provided with a material level detector, and the control component is connected to the material level detector signal.

7. The activated carbon dosing device according to claim 1, characterized in that: It also comprises a first pipeline (8), through which the material outlet of the screw conveyor (2) and the drug addition port of the ejector (3) are connected.

8. The activated carbon dosing device according to claim 7, characterized in that: The first pipeline (8) is provided with a discharge valve.

9. The activated carbon dosing device according to claim 1, characterized in that: It also comprises a sewage input pipe (4) and a sewage output pipe (12); the water inlet of the ejector (3) is connected to the sewage input pipe (4), and the water outlet of the ejector (3) is connected to the sewage output pipe (12); the water outlet end of the sewage output pipe (12) is connected to the material of the sewage treatment pool (14).

10. The activated carbon dosing device according to claim 9, characterized in that: The sewage input pipe (4) is provided with a water inlet pump (7) and / or a water inlet valve (11).

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