Treatment device for low-concentration chromium-containing leather wastewater

Abstract

The utility model discloses a low-concentration chromium-containing leather wastewater treatment device which structurally comprises a treatment box, four blow-off pipes, a drain pipe and four cavities arranged in the treatment box, the number of the blow-off pipes is four, the blow-off pipes are fixedly mounted at the front ends of the blow-off pipes, and the drain pipe is mounted at the bottom of the right side of the treatment box; the treatment box comprises four top covers, a filtering basket, a stirring machine and an aeration machine, the top covers are installed on the top end face of the treatment box, the activated carbon plate layer is used for adsorbing peculiar smell, it is avoided that peculiar smell contained in gas exhausted outwards is heavy, finally, the sealing performance between the top covers and the treatment box is improved through the sealing rings made of rubber, and therefore the treatment effect is improved. The peculiar smell of the chromium leather wastewater is prevented from being emitted outwards, and a worker can operate the wastewater treatment device conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of wastewater treatment, in particular to a treatment device for low-concentration chromium-containing leather wastewater. Background Art

[0002] The leather industry is characterized by high input of raw materials and low output of products. Only about 20-40% of raw hides are converted into leather during tanning. In the process of leather processing, colored leather waste is generated, and some of the waste will enter the wastewater. The factory's wastewater is treated by quality separation and is divided into high-concentration chromium-containing wastewater and low-concentration chromium-containing wastewater. The sludge from high-concentration chromium-containing wastewater is directly treated as hazardous waste, but with the strengthening of water environment management requirements, the treatment of sludge from low-concentration chromium-containing wastewater has also become a key focus. When the chromium content exceeds the concentration specified in the sludge standard, it becomes a hazardous waste, which greatly increases the cost of wastewater treatment. The existing chromium leather wastewater will produce odor when treated, making it difficult for staff to operate it and inconvenient for staff maintenance. Utility Model Content

[0003] In view of the deficiencies in the prior art, the present invention is achieved through the following technical solutions:

[0004] As a further optimization of the present technical solution, its structure includes a treatment box, a sewage pipe, and a drainage pipe. The treatment box is equipped with four cavities inside. The sewage pipes are provided with four sewage pipes, and the sewage pipes are fixedly installed at the front end of the sewage pipes. The drainage pipe is installed at the right bottom of the treatment box; the treatment box includes a top cover, a filter basket, a mixer, and an aerator. The top covers are provided with four and are installed on the top end surface of the treatment box. The filter basket is installed in the first cavity on the left side of the treatment box, the mixer is located in the second cavity of the treatment box, and the aerator is arranged in the third cavity of the treatment box.

[0005] As a further optimization of the present technical solution, the top cover includes a plate body, a handle, a rotating shaft, and a filtering structure. The plate body is arranged on the top of the processing box, the handle is fixedly installed on the top end surface of the plate body, the rotating shaft is located on the rear end surface of the plate body, and the rotating shaft is rotatably connected to the top rear side of the processing box, and the filtering structure is arranged in the middle position of the plate body.

[0006] As a further optimization of the present technical solution, the filtering structure includes a frame, a filter screen, and an activated carbon board layer. The frame is mounted on the end face of the board body, the filter screen is arranged on the top end face of the frame, and the activated carbon board layer is installed on the inner end face of the frame.

[0007] As a further optimization of the present technical solution, the plate body includes a sealing ring and a fixed plug, the sealing ring is arranged on the side end surface of the plate body, the fixed plug is fixedly connected to the end surface of the sealing ring, and the fixed plug is clamped and connected to the end surface of the plate body. Beneficial Effects

[0008] Compared with the prior art, the device for treating low-concentration chromium-containing leather wastewater of the utility model has the following advantages:

[0009] The utility model utilizes an activated carbon plate layer to absorb odors to prevent the gas discharged to the outside from containing heavy odors, and finally utilizes a rubber sealing ring to increase the sealing between the top cover and the treatment box to prevent the odor of chrome leather wastewater from emitting outside, making it easier for staff to operate the wastewater treatment device. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0011] Figure 1 This is a schematic diagram of the main structure of a treatment device for low-concentration chromium-containing leather wastewater according to the utility model.

[0012] Figure 2 The utility model is a schematic diagram of the front cross-sectional structure of a treatment box of a treatment device for low-concentration chromium-containing leather wastewater.

[0013] Figure 3 This is a schematic diagram of the main structure of the top cover of a treatment device for low-concentration chromium-containing leather wastewater according to the utility model.

[0014] Figure 4 The utility model is a schematic diagram of a front view cross-sectional structure of a filtering structure of a treatment device for low-concentration chromium-containing leather wastewater.

[0015] Figure 5 The utility model is a schematic diagram of the front cross-sectional structure of a plate body of a treatment device for low-concentration chromium-containing leather wastewater.

[0016] In the figure: treatment box 1, sewage pipe 2, drain pipe 3, top cover 11, filter basket 12, mixer 13, aerator 14, plate body 111, handle 112, rotating shaft 113, filter structure 114, frame a1, filter screen a2, activated carbon plate layer a3, sealing ring s1, fixed plug s2. DETAILED DESCRIPTION

[0017] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the preferred implementation scheme of the present invention is further described below in conjunction with specific implementation schemes and accompanying drawings. Example

[0018] See also Figure 1-Figure 5 The utility model provides a treatment device for low-concentration chromium-containing leather wastewater, and its structure includes a treatment box 1, a sewage pipe 2, and a drainage pipe 3. The treatment box 1 is equipped with four cavities. The sewage pipe 2 is provided with four cavities, and the sewage pipe 2 is fixedly installed at the front end of the sewage pipe 2. The drainage pipe 3 is installed at the right bottom of the treatment box 1; the treatment box 1 includes a top cover 11, a filter basket 12, a mixer 13, and an aerator 14. The top cover 11 is provided with four cavities, and the top cover 11 is installed on the top end surface of the treatment box 1. The filter basket 12 is installed in the first cavity on the left side of the treatment box 1, the mixer 13 is located in the second cavity of the treatment box 1, and the aerator 14 is arranged in the third cavity of the treatment box 1.

[0019] The top cover 11 includes a plate body 111, a handle 112, a rotating shaft 113, and a filtering structure 114. The plate body 111 is arranged on the top of the processing box 1, and the handle 112 is fixedly installed on the top end surface of the plate body 111. The rotating shaft 113 is located on the rear end surface of the plate body 111, and the rotating shaft 113 is rotatably connected to the top rear side of the processing box 1. The filtering structure 114 is arranged in the middle position of the plate body 111.

[0020] The filtering structure 114 includes a frame a1, a filter screen a2, and an activated carbon plate layer a3. The frame a1 is mounted on the end surface of the plate body 111, the filter screen a2 is arranged on the top end surface of the frame a1, and the activated carbon plate layer a3 is installed on the inner end surface of the frame a1.

[0021] The plate body 111 includes a sealing ring s1 and a fixing plug s2 . The sealing ring s1 is disposed on a side end surface of the plate body 111 . The fixing plug s2 is fixedly connected to the end surface of the sealing ring s1 , and the fixing plug s2 is connected to the end surface of the plate body 111 by a clamping arrangement.

[0022] Working principle: When chrome leather wastewater is to be treated, the wastewater can be poured into the first cavity from the left side of the treatment box 1, and then the larger impurities in the wastewater are cleaned through the filter basket 12, and then the wastewater is allowed to flow to the second cavity to add an oxidant, and the wastewater is stirred by the mixer 13 to accelerate the decomposition of chromium metal in the wastewater, and then the wastewater is allowed to flow into the third cavity and aerated by the aerator 14 to increase the contact with the air so that the odor can flow upward, and the treated sewage can be discharged through the drain pipe 3. The top cover 11 can be flipped back and opened by the rotating shaft 113 to facilitate cleaning of the cavity, and then the odor is adsorbed by the activated carbon plate layer a3 to avoid the gas discharged containing a heavy odor. Finally, a rubber sealing ring s1 is used to increase the sealing between the top cover 11 and the treatment box 1 to prevent the odor of the chrome leather wastewater from emanating outward, so that the staff can operate the wastewater treatment device.

[0023] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit or basic features of the utility model, the utility model can be implemented in other specific forms and various changes and improvements can be made. These changes and improvements all fall within the scope of the utility model to be protected. Therefore, the scope of protection of the utility model is defined by the attached claims and their equivalents, rather than the above description.

[0024] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A treatment device for low-concentration chromium-containing leather wastewater, the structure of which comprises a treatment box (1), a sewage pipe (2), and a drainage pipe (3), wherein the treatment box (1) is provided with four cavities, the sewage pipe (2) is provided with four cavities, and the sewage pipe (2) is fixedly installed at the front end of the sewage pipe (2), and the drainage pipe (3) is installed at the right bottom of the treatment box (1); Features: The treatment box (1) comprises a top cover (11), a filter basket (12), a mixer (13), and an aerator (14); four top covers (11) are provided, and the top covers (11) are installed on the top end surface of the treatment box (1); the filter basket (12) is installed in the first cavity on the left side of the treatment box (1); the mixer (13) is located in the second cavity of the treatment box (1); and the aerator (14) is arranged in the third cavity of the treatment box (1).

2. The device for treating low-concentration chromium-containing leather wastewater according to claim 1, characterized in that: The top cover (11) comprises a plate body (111), a handle (112), a rotating shaft (113), and a filtering structure (114); the plate body (111) is arranged on the top of the processing box (1); the handle (112) is fixedly mounted on the top end surface of the plate body (111); the rotating shaft (113) is located on the rear end surface of the plate body (111); the rotating shaft (113) is rotatably connected to the rear side of the top of the processing box (1); and the filtering structure (114) is arranged in the middle of the plate body (111).

3. A treatment device for low-concentration chromium-containing leather wastewater according to claim 2, characterized in that: The filtering structure (114) comprises a frame (a1), a filter screen (a2), and an activated carbon plate layer (a3); the frame (a1) is mounted on an end surface of a plate body (111); the filter screen (a2) is arranged on a top end surface of the frame (a1); and the activated carbon plate layer (a3) ​​is mounted on an inner end surface of the frame (a1).

4. The treatment device for low-concentration chromium-containing leather wastewater according to claim 3, characterized in that: The plate body (111) comprises a sealing ring (s1) and a fixed plug (s2); the sealing ring (s1) is arranged on a side end surface of the plate body (111); the fixed plug (s2) is fixedly connected to the end surface of the sealing ring (s1); and the fixed plug (s2) is connected to the end surface of the plate body (111) by a clamping arrangement.

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