Zero discharge device for treating wastewater based on adsorption of VOCs (volatile organic compounds) by activated carbon

Abstract

The utility model belongs to the technical field of VOCs treatment, and particularly relates to a wastewater zero discharge device based on VOCs adsorption, which comprises a fixed base and a support rod, the support rod is fixedly mounted on the upper surface of the fixed base, a treatment box is fixedly mounted on the upper surface of the support rod, and a cover plate is hermetically clamped on the upper surface of the treatment box. A treatment mechanism is arranged on the upper surface of the fixed base, and an adsorption mechanism is arranged on one side in the treatment box. According to the zero discharge device for treating wastewater by adsorbing VOCs based on activated carbon, the treatment mechanism is arranged, impurities and harmful substances in wastewater are filtered and removed by a filter unit in the treatment mechanism after VOCs are adsorbed, and then the wastewater is heated at a high temperature to be evaporated and then guided out in a water vapor form, so that the zero discharge effect is achieved; when the adsorption mechanism is arranged to adsorb the VOCs in the wastewater, the VOCs pass through a one-way valve, then move towards a plurality of activated carbon adsorption plates under the action of an exhaust fan, are adsorbed by the activated carbon adsorption plates and then are discharged out of the treatment box.

Description

Technical Field

[0001] The utility model relates to the technical field of VOCs treatment, in particular to a zero-emission device for treating wastewater based on activated carbon adsorption of VOCs. Background Technique

[0002] VOCs are a class of volatile organic compounds with boiling points between 50°C and 260°C and saturated vapor pressures exceeding 133.3 Pa at room temperature. They pose great hazards to human health and the ecological environment. Currently, the treatment technologies for VOCs include two major categories: destruction and recycling. Among them, the recycling technologies are widely used due to their simple process, good economy, and relative maturity. The principle is to use activated carbon to fully adsorb VOCs. After adsorption saturation, the VOCs adsorbed on the activated carbon are desorbed, and then condensed and liquefied for recycling.

[0003] Most of the existing VOCs treatment devices based on activated carbon adsorption are difficult to detect the emission of VOCs gas after adsorption by activated carbon and perform secondary adsorption. When the performance of the activated carbon decreases, it may cause the VOCs gas that has not been completely adsorbed to be discharged outward, thus making the discharged VOCs gas harmful to the air and difficult to meet the usage requirements of users.

[0004] For example, a VOCs treatment device based on activated carbon adsorption disclosed in Chinese Patent CN215311280U. This VOCs treatment device based on activated carbon adsorption includes a housing. A first baffle, a second baffle, and a third baffle are fixedly installed between the bottom and top inner walls of the housing. A gas inlet pipe is fixedly inserted in the middle of the left side surface of the housing, and a liquid adding pipe is fixedly installed on the left side of the top surface of the housing. The top end of the liquid adding pipe is threadedly connected with an end cap. This VOCs treatment device based on activated carbon adsorption detects the discharged VOCs through a VOCs concentration detector to judge whether secondary adsorption is needed, which can better ensure that the discharged VOCs meet the standards, achieves the goal of facilitating the emission detection and secondary adsorption of VOCs gas after adsorption by activated carbon, avoids the situation that the VOCs gas that has not been completely adsorbed may be discharged outward when the performance of the activated carbon decreases, avoids the discharged VOCs gas that has not been completely adsorbed from harming the air, meets the usage requirements of users, and is more convenient to use.

[0005] However, this VOCs treatment device based on activated carbon adsorption lacks a filtering mechanism for treating wastewater for filtering treatment and achieving the effect of zero emission through subsequent measures.

[0006] Therefore, we propose a zero-emission device for treating wastewater based on activated carbon adsorption of VOCs to solve the above problems. Content of the Utility Model

[0007] The purpose of the present utility model is to provide a device for zero discharge of wastewater treated by activated carbon adsorption of VOCs to solve the problems raised in the above-mentioned background technology.

[0008] To achieve the above object, the present utility model provides the following technical solution: A device for zero discharge of wastewater treated by activated carbon adsorption of VOCs, including a fixed base and a support rod. The support rod is fixedly installed on the upper surface of the fixed base. The upper surface of the support rod is fixedly installed with a treatment box. The upper surface of the treatment box is hermetically clamped with a cover plate. A treatment mechanism is arranged on the upper surface of the fixed base, and an adsorption mechanism is arranged on one side inside the treatment box;

[0009] The treatment mechanism includes a filtering unit and an evaporation unit. The filtering unit includes a round hole, a water inlet pipe, a discharge hole, a discharge pipe, a connecting flange, a valve body, a valve rod, a valve plate, a handle, a fixed pipe, a filtering box, a filtering net plate, a filtering hole, and a sealing clamping plate. The round hole penetrates through the upper part of one side of the inner wall of the treatment box. The water inlet pipe is fixedly installed on the inner wall of the round hole. The discharge hole penetrates through one side of the inner bottom surface of the treatment box. The discharge pipe is fixedly installed on the inner wall of the discharge hole. The connecting flange is fixedly installed on the lower part of the outer surface of the discharge pipe. The valve body is connected to the bottom surface of the connecting flange. The valve rod is installed on the inner wall of the valve body. The valve plate is fixedly installed on the outer surface of the valve rod. The handle is fixedly installed at one end of the valve rod. The fixed pipe is fixedly installed on the bottom surface of the valve body. The filtering box is fixedly installed on the upper surface of the fixed base. The upper surface of the filtering box is connected to the bottom end of the fixed pipe. The filtering net plate is installed on the inner wall of the filtering box. The filtering hole penetrates through the upper surface of the filtering net plate. The sealing clamping plate is clamped on one end surface of the filtering box.

[0010] Preferably, the evaporation unit includes a pump, a delivery pipe, a heating box, and a steam pipe. The pump is fixedly installed on one side of the inner bottom surface of the filtering box. The delivery pipe is connected to the output end of the pump. The heating box is fixedly installed on the upper surface of the fixed base. One end surface of the heating box is fixedly connected to one end of the delivery pipe. The steam pipe is fixedly installed on one end surface of the heating box.

[0011] Preferably, the adsorption mechanism includes a gas guiding unit and an adsorption unit. The gas guiding unit includes a baffle plate, a pipe hole, a connecting pipe, a one-way valve, and a gas guiding pipe. The baffle plate is fixedly installed on the inner bottom surface of the treatment box. The pipe hole penetrates through the upper part of one end surface of the baffle plate. The connecting pipe is fixedly installed on the inner wall of the pipe hole. The one-way valve is fixedly installed on one end surface of the connecting pipe. The gas guiding pipe is fixedly connected to the output end of the one-way valve.

[0012] Preferably, the adsorption unit includes an activated carbon adsorption plate, adsorption holes, a fan slot, an exhaust fan, a fixing frame, and a dust-proof net plate. The activated carbon adsorption plate is installed on the inner wall of the treatment tank. The adsorption holes penetrate the surface of the activated carbon adsorption plate. The fan slot penetrates one end surface of the treatment tank. The exhaust fan is installed on the inner wall of the fan slot. The fixing frame is fixedly connected to one end surface of the treatment tank. The dust-proof net plate is snap-fitted to the inner wall of the fixing frame. The power supply of the exhaust fan is electrically connected to an external power supply.

[0013] Preferably, a driving motor is fixedly installed on one side of the upper surface of the cover plate. The output end of the driving motor is connected to a transmission shaft. A stirring plate is fixedly installed on the outer surface of the transmission shaft. Through holes penetrate the surface of the stirring plate.

[0014] Preferably, a hole penetrates one side of the upper surface of the cover plate. The upper end of the transmission shaft passes through this hole and is connected to the output end of the driving motor. The stirring plates are sequentially distributed at equal intervals on the outer surface of the transmission shaft. The through holes are sequentially distributed at equal intervals on the surface of the stirring plate.

[0015] Preferably, the filter holes are sequentially distributed at equal intervals on the upper surface of the filter net plate. The filter net plates are sequentially distributed at equal intervals on the upper part of the inner wall of the filter tank. A hole penetrates the lower part of one side of the inner wall of the filter tank. One end of the delivery pipe passes through this hole and is connected to the output end of the pump.

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0017] 1. For this zero-emission device for treating wastewater by adsorbing VOCs based on activated carbon, through the setting of the treatment mechanism, the filtration unit filters and removes impurities and harmful substances in the wastewater after VOCs adsorption, then heats the wastewater at a high temperature to evaporate it, and finally exports it in the form of water vapor to achieve the zero-emission effect.

[0018] 2. For this zero-emission device for treating wastewater by adsorbing VOCs based on activated carbon, when the adsorption mechanism adsorbs VOCs in the wastewater, the VOCs move towards multiple activated carbon adsorption plates under the action of the exhaust fan after passing through the one-way valve, and are adsorbed and treated by the activated carbon adsorption plates and then discharged from the treatment tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is the front view structural schematic diagram of the present utility model;

[0020] Figure 2 It is the structural schematic diagram of the adsorption mechanism of the present utility model;

[0021] Figure 3 It is the structural schematic diagram of the treatment mechanism of the present utility model;

[0022] Figure 4This is a schematic structural diagram of the discharging mechanism of the present utility model.

[0023] In the figure: 1, fixed base; 2, support rod; 3, treatment tank; 301, cover plate; 302, round hole; 303, water inlet pipe; 304, drive motor; 305, transmission shaft; 306, stirring plate; 307, through hole; 308, baffle plate; 309, pipe hole; 310, connecting pipe; 311, check valve; 312, air guide pipe; 313, activated carbon adsorption plate; 314, adsorption hole; 315, fan slot; 316, exhaust fan; 317, fixed frame; 318, dust-proof net plate; 319, discharge hole; 320, discharge pipe; 321, connecting flange; 322, valve body; 323, valve rod; 324, valve plate; 325, handle; 326, fixed pipe; 327, filter tank; 328, filter net plate; 329, filter hole; 330, pump; 331, delivery pipe; 332, sealing and clamping plate; 333, heating tank; 334, steam pipe. Specific embodiments

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0025] Please refer to Figures 1-4 , the present utility model provides a technical solution:

[0026] Embodiment 1: A device for treating wastewater zero discharge based on activated carbon adsorption of VOCs, including a fixed base 1 and a support rod 2. The support rod 2 is fixedly installed on the upper surface of the fixed base 1, and a treatment tank 3 is fixedly installed on the upper surface of the support rod 2. A cover plate 301 is hermetically clamped on the upper surface of the treatment tank 3. A treatment mechanism is arranged on the upper surface of the fixed base 1, and an adsorption mechanism is arranged on one side inside the treatment tank 3;

[0027] The processing mechanism includes a filtering unit and an evaporation unit. The filtering unit includes a round hole 302, a water inlet pipe 303, a discharge hole 319, a discharge pipe 320, a connecting flange 321, a valve body 322, a valve rod 323, a valve plate 324, a handle 325, a fixed pipe 326, a filter box 327, a filter mesh plate 328, filter holes 329, and a sealing clamping plate 332. The round hole 302 runs through the upper part of one side of the inner wall of the processing box 3. The water inlet pipe 303 is fixedly installed on the inner wall of the round hole 302. The discharge hole 319 runs through the lower part of one side of the inner bottom surface of the processing box 3. The discharge pipe 320 is fixedly installed on the inner wall of the discharge hole 319. The connecting flange 321 is fixedly installed on the lower part of the outer surface of the discharge pipe 320. The valve body 322 is connected to the bottom surface of the connecting flange 321. The valve rod 323 is installed on the inner wall of the valve body 322. The valve plate 324 is fixedly installed on the outer surface of the valve rod 323. The handle 325 is fixedly installed at one end of the valve rod 323. The fixed pipe 326 is fixedly installed on the bottom surface of the valve body 322. The filter box 327 is fixedly installed on the upper surface of the fixed base 1. The upper surface of the filter box 327 is connected to the bottom end of the fixed pipe 326. The filter mesh plate 328 is installed on the inner wall of the filter box 327. The filter holes 329 run through the upper surface of the filter mesh plate 328. The filter holes 329 are distributed in sequence at equal intervals on the upper surface of the filter mesh plate 328. The filter mesh plates 328 are distributed in sequence at equal intervals on the upper part of the inner wall of the filter box 327. There is a hole running through the lower part of one side of the inner wall of the filter box 327. One end of the delivery pipe 331 passes through this hole and is connected to the output end of the pump 330. The sealing clamping plate 332 is clamped on the surface of one end of the filter box 327. On the upper surface of one side of the cover plate 301, a driving motor 304 is fixedly installed. The output end of the driving motor 304 is connected to a transmission shaft 305. On the outer surface of the transmission shaft 305, stirring plates 306 are fixedly installed. Through holes 307 run through the surface of the stirring plates 306. There is a hole running through the upper surface of one side of the cover plate 301. The upper end of the transmission shaft 305 passes through this hole and is connected to the output end of the driving motor 304. The stirring plates 306 are distributed in sequence at equal intervals on the outer surface of the transmission shaft 305. The through holes 307 are distributed in sequence at equal intervals on the surface of the stirring plates 306.

[0028] The evaporation unit includes a pump 330, a delivery pipe 331, a heating box 333, and a steam pipe 334. The pump 330 is fixedly installed on the lower part of one side of the inner bottom surface of the filter box 327. The delivery pipe 331 is connected to the output end of the pump 330. The heating box 333 is fixedly installed on the upper surface of the fixed base 1. One end surface of the heating box 333 is fixedly connected to one end of the delivery pipe 331. The steam pipe 334 is fixedly installed on one end surface of the heating box 333. By setting up the processing mechanism, the filtering unit in it filters and removes impurities and harmful substances in the wastewater after VOCs adsorption, then heats the wastewater at high temperature to evaporate it, and finally discharges it in the form of water vapor to achieve the effect of zero discharge.

[0029] Wastewater is input into the treatment tank 3 through the water inlet pipe 303. The power supply of the drive motor 304 is started to make the drive motor 304 work, driving the transmission shaft 305 to rotate, thereby driving the stirring plate 306 to rotate slowly, so that the VOCs in the wastewater rise and enter the connecting pipe 310. After the VOCs in the wastewater are adsorbed, the handle 325 is rotated to drive the valve stem 323 to rotate, driving the valve plate 324 to rotate to open the internal passage of the valve body 322, so that the wastewater enters the valve body 322 through the discharge pipe 320 and then enters the fixed pipe 326 and the filter tank 327. After passing through the multi-layer filter screen plates 328 in the filter tank 327 to filter out harmful substances and impurities, the pump 330 works to pump the wastewater through the one-way valve 311 and input it into the heating tank 333 for high-temperature heating and evaporation, and then discharged from the heating tank 333 in the form of water vapor.

[0030] Embodiment 2: Based on Embodiment 1, the adsorption mechanism includes a gas guiding unit and an adsorption unit. The gas guiding unit includes a baffle 308, a pipe hole 309, a connecting pipe 310, a one-way valve 311, and a gas guide pipe 312. The baffle 308 is fixedly installed on the inner bottom surface of the treatment tank 3. The pipe hole 309 penetrates the upper part of one end surface of the baffle 308. The connecting pipe 310 is fixedly installed on the inner wall of the pipe hole 309. The one-way valve 311 is fixedly installed on one end surface of the connecting pipe 310. The gas guide pipe 312 is fixedly connected to the output end of the one-way valve 311.

[0031] The adsorption unit includes an activated carbon adsorption plate 313, adsorption holes 314, a fan slot 315, an exhaust fan 316, a fixing frame 317, and a dust-proof mesh plate 318. The activated carbon adsorption plate 313 is installed on the inner wall of the treatment tank 3. The adsorption holes 314 penetrate the surface of the activated carbon adsorption plate 313. The fan slot 315 penetrates one end surface of the treatment tank 3. The exhaust fan 316 is installed on the inner wall of the fan slot 315. The fixing frame 317 is fixedly connected to one end surface of the treatment tank 3. The dust-proof mesh plate 318 is clamped on the inner wall of the fixing frame 317. The power supply of the exhaust fan 316 is electrically connected to an external power supply. When the adsorption mechanism is set to adsorb VOCs in the wastewater, the VOCs move towards the multi-piece activated carbon adsorption plates 313 under the action of the exhaust fan 316 after passing through the one-way valve 311, and are adsorbed and processed by the activated carbon adsorption plates 313 and then discharged from the treatment tank 3.

[0032] Connect the external power supply to supply power to the exhaust fan 316 to make it rotate, open the one-way valve 311, and under the rotation of the exhaust fan 316, the VOCs are pumped, so that the VOCs are adsorbed and processed by the multi-layer activated carbon adsorption plates 313 and then discharged from the treatment tank 3 through the exhaust fan 316.

[0033] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent in such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the said element.

Claims

1. A zero-discharge device for treating wastewater based on adsorption of VOCs by activated carbon, comprising a fixed base (1) and a support rod (2), wherein the support rod (2) is fixedly mounted on the upper surface of the fixed base (1), a treatment box (3) is fixedly mounted on the upper surface of the support rod (2), and a cover plate (301) is sealed and clamped on the upper surface of the treatment box (3), characterized in that: The upper surface of the fixed base (1) is provided with a processing mechanism, and one side of the interior of the processing box (3) is provided with an adsorption mechanism; The treatment mechanism comprises a filtering unit and an evaporation unit. The filtering unit comprises a circular hole (302), a water inlet pipe (303), a discharge hole (319), a discharge pipe (320), a connecting flange (321), a valve body (322), a valve stem (323), a valve lever (324), a handle (325), a fixing pipe (326), a filter box (327), a filter screen (328), a filtering hole (329) and a sealing clamping plate (332). The circular hole (302) passes through an upper portion of one side of an inner wall of the treatment box (3), the water inlet pipe (303) is fixedly mounted on the inner wall of the circular hole (302), the discharge hole (319) passes through one side of an inner bottom surface of the treatment box (3), the discharge pipe (320) is fixedly mounted on the inner wall of the discharge hole (319), and the connecting flange (321) is fixedly mounted. At the lower part of the outer surface of the discharge pipe (320), the valve body (322) is connected to the bottom surface of the connecting flange (321), the valve stem (323) is installed on the inner wall of the valve body (322), the valve lever (324) is fixedly installed on the outer surface of the valve stem (323), the handle (325) is fixedly installed on one end of the valve stem (323), the fixed pipe (326) is fixedly installed on the bottom surface of the valve body (322), the filter box (327) is fixedly installed on the upper surface of the fixed base (1), the upper surface of the filter box (327) is connected to the bottom end of the fixed pipe (326), the filter screen plate (328) is installed on the inner wall of the filter box (327), the filter hole (329) runs through the upper surface of the filter screen plate (328), and the sealing clamping plate (332) is clamped on the surface of one end of the filter box (327).

2. According to claim 1, a zero-discharge device for treating wastewater based on VOCs adsorption by activated carbon, characterized in that: The evaporation unit comprises a pump (330), a delivery pipe (331), a heating box (333) and a steam pipe (334); the pump (330) is fixedly mounted on one side of the inner bottom surface of the filter box (327); the delivery pipe (331) is connected to the output end of the pump (330); the heating box (333) is fixedly mounted on the upper surface of the fixed base (1); one end surface of the heating box (333) is fixedly connected to one end of the delivery pipe (331); and the steam pipe (334) is fixedly mounted on one end surface of the heating box (333).

3. The device for treating wastewater by zero discharge based on activated carbon adsorption of VOCs according to claim 1 is characterized by: The adsorption mechanism comprises an air guide unit and an adsorption unit, wherein the air guide unit comprises a baffle (308), a pipe hole (309), a connecting pipe (310), a one-way valve (311) and an air guide pipe (312), wherein the baffle (308) is fixedly mounted on the inner bottom surface of the processing box (3), the pipe hole (309) penetrates the upper part of one end surface of the baffle (308), the connecting pipe (310) is fixedly mounted on the inner wall of the pipe hole (309), the one-way valve (311) is fixedly mounted on one end surface of the connecting pipe (310), and the air guide pipe (312) is fixedly connected to the output end of the one-way valve (311).

4. The device for treating wastewater by zero discharge based on activated carbon adsorption of VOCs according to claim 3 is characterized by: The adsorption unit comprises an activated carbon adsorption plate (313), adsorption holes (314), a fan slot (315), an exhaust fan (316), a fixing frame (317) and a dust screen (318); the activated carbon adsorption plate (313) is mounted on the inner wall of the processing box (3); the adsorption holes (314) penetrate the surface of the activated carbon adsorption plate (313); the fan slot (315) penetrates the surface of one end of the processing box (3); the exhaust fan (316) is mounted on the inner wall of the fan slot (315); the fixing frame (317) is fixedly connected to the surface of one end of the processing box (3); the dust screen (318) is snapped onto the inner wall of the fixing frame (317); and the power supply of the exhaust fan (316) is electrically connected to an external power supply.

5. The device for treating wastewater by zero discharge based on activated carbon adsorption of VOCs according to claim 1 is characterized by: A driving motor (304) is fixedly mounted on one side of the upper surface of the cover plate (301); the output end of the driving motor (304) is connected to a transmission shaft (305); a stirring plate (306) is fixedly mounted on the outer surface of the transmission shaft (305); and a through hole (307) penetrates the surface of the stirring plate (306).

6. The device for treating wastewater by zero discharge based on activated carbon adsorption of VOCs according to claim 5 is characterized by: A hole is penetrated on one side of the upper surface of the cover plate (301), and the upper end of the transmission shaft (305) passes through the hole to be connected to the output end of the driving motor (304), the stirring plates (306) are distributed in sequence at equal intervals on the outer surface of the transmission shaft (305), and the through holes (307) are distributed in sequence at equal intervals on the surface of the stirring plates (306).

7. The device for treating wastewater by zero discharge based on activated carbon adsorption of VOCs according to claim 2 is characterized by: The filter holes (329) are distributed in sequence at equal intervals on the upper surface of the filter screen plate (328), and the filter screen plate (328) is distributed in sequence at equal intervals on the upper portion of the inner wall of the filter box (327). A hole is penetrated through the lower portion of one side of the inner wall of the filter box (327), and one end of the delivery pipe (331) passes through the hole to be connected to the output end of the pump (330).

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