Total nitrogen removal equipment for nitric acid pickling copper wastewater

Abstract

The utility model discloses nitric acid pickling copper wastewater total nitrogen removal equipment which comprises an air stripping tower main body and an exhaust chimney, and the exhaust chimney is fixedly mounted at the top of the air stripping tower main body; the efficient removal assembly comprises a PH adjusting heating tank, a header pipe, a spraying circulating pipe, a drainage pipe, a first filler layer, a second filler layer and a centrifugal fan, the PH adjusting heating tank is arranged at the side part of the air stripping tower main body, the header pipe is arranged at the top of the PH adjusting heating tank, the header pipe is connected with the spraying circulating pipe in a grading manner, and the drainage pipe is connected with the spraying circulating pipe. A drainage pipe is fixedly inserted into the bottom of the spraying circulating pipe, a first filler layer and a second filler layer are fixedly mounted in the air stripping tower main body, and the side part of the air stripping tower main body is fixedly connected with an air outlet end of a centrifugal fan. According to the device disclosed by the utility model, free ammonia dissolved in wastewater can pass through a gas-liquid interface and is transferred to a gas phase, so that the aim of deeply removing ammonia nitrogen and total nitrogen is fulfilled.

Description

TECHNICAL FIELD

[0001] The utility model relates to copper waste water purification technical field, especially a kind of nitric acid pickling copper waste water total nitrogen removal equipment. BACKGROUND

[0002] During the nitric acid pickling process of copper material, a certain amount of copper-containing and total nitrogen-containing wastewater will be generated, which needs to be purified to meet the standard before being discharged.

[0003] The existing wastewater treatment equipment uses A2O equipment for treatment, which can solve part of the total nitrogen removal, but the removal efficiency of high-concentration total nitrogen in nitric acid pickling is reduced, and it cannot completely and stably treat to meet the national sewage discharge standard, so a new removal equipment is needed to solve the above problems. UTILITY MODEL CONTENT

[0004] The utility model aims to provide a kind of nitric acid pickling copper waste water total nitrogen removal equipment, to solve the problems raised in the above background technical, the existing wastewater treatment equipment uses A2O equipment for treatment, which can solve part of the total nitrogen removal, but the removal efficiency of high-concentration total nitrogen in nitric acid pickling is reduced, and it cannot completely and stably treat to meet the national sewage discharge standard.

[0005] To solve the above technical problems, the utility model is realized by the following technical solutions:

[0006] The utility model is a kind of nitric acid pickling copper waste water total nitrogen removal equipment, comprising:

[0007] stripping tower main part and exhaust chimney, the stripping tower main part top fixed installation exhaust chimney;

[0008] Efficient removal assembly, the efficient removal assembly includes PH adjusting heating tank, main pipe, spray circulating pipe, drain pipe, first filler layer, second filler layer and centrifugal fan, the stripping tower main part side is equipped with PH adjusting heating tank, the PH adjusting heating tank top is equipped with main pipe, the main pipe is connected with spray circulating pipe in stages, the spray circulating pipe bottom is fixedly inserted drain pipe, the stripping tower main part is fixedly installed first filler layer and second filler layer, the stripping tower main part side is fixedly connected with centrifugal fan air outlet end.

[0009] Further, the efficient removal assembly further includes stripping tank and water outlet pipe, the stripping tower main part and PH adjusting heating tank middle part are equipped with stripping tank, and the stripping tank is fixedly installed water outlet pipe.

[0010] Furthermore, the high-efficiency removal component also includes a spray circulation pump, a receiving pipe, a first water inlet pipe, and a second water inlet pipe. The top of the pH adjusting heating tank is equipped with a spray circulation pump. One end of the receiving pipe is fixedly connected to the side of the spray circulation pump. The receiving pipe is inserted into the pH adjusting heating tank. One end of the first water inlet pipe is fixedly inserted through the side of the stripping tank. The other end of the first water inlet pipe is inserted into the pH adjusting heating tank. The second water inlet pipe is connected to the pH adjusting heating tank.

[0011] Furthermore, it also includes a high-efficiency spraying assembly, which includes a spraying disc and water flow plates. The bottom of the drain pipe is movably connected to the spraying disc, and the water flow plates are fixedly connected to the sides of the spraying disc. The water flow plates are installed at an angle.

[0012] Furthermore, the high-efficiency spraying assembly also includes a rectangular block, an L-shaped rod, a circular block, a shaft, a limiting plate, and a circular groove. The rectangular blocks are fixedly connected to the bottom of both sides of the drain pipe. One end of the L-shaped rod is fixedly connected to the bottom of the rectangular block, and the other end of the L-shaped rod is fixedly connected to the circular block. The shaft is fixedly connected to the bottom of the circular block, and the limiting plate is fixedly connected to the bottom of the shaft. A circular groove is formed through the middle of the spraying disc, and the shaft is movably connected to the circular groove. The height of the shaft is greater than the thickness of the spraying disc.

[0013] Furthermore, the high-efficiency spray assembly also includes a threaded rod, which is fixedly connected to the top of the circular block.

[0014] Compared with existing technologies, the advantages of this utility model are:

[0015] This invention enables gas and liquid to come into contact on the surfaces of the first and second packing layers, allowing dissolved free ammonia in the wastewater to pass through the gas-liquid interface and transfer to the gas phase, thereby achieving the purpose of deep removal of ammonia nitrogen and total nitrogen. Moreover, the entire process is simple to operate and easy to control, and can be started and stopped at any time during holidays or production shutdowns.

[0016] Based on the aforementioned beneficial effects, the water discharged from the drain pipe falls onto the sprinkler plate and moves towards the surrounding water jets. Due to the inclined installation of the water jets, the water flow generates an oblique external force on them. Subsequently, with the cooperation of the shaft, the sprinkler plate can rotate, thereby achieving the rotational spraying of water. This enhances the reaction effect between total nitrogen ions in the wastewater and the first and second packing layers, and the self-rotation method has the effect of saving energy and electricity. Attached Figure Description

[0017] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description, obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0018] Fig. 1 It is the overall schematic view of the present application.

[0019] Fig. 2 It is the drain pipe connection schematic view of the present application.

[0020] Fig. 3 It is the saucer connection schematic view of the present application.

[0021] In the drawings, the component list represented by each sign is as follows:

[0022] 101, blow-off tower main body; 102, exhaust chimney;

[0023] 201, PH adjusting heating groove; 202, main pipe; 203, spraying circulating pipe; 204, drain pipe; 205, first filler layer; 206, second filler layer; 207, centrifugal fan; 208, blow-off groove; 209, water outlet pipe; 2010, spraying circulating pump; 2011, receiving pipe; 2012, first water inlet pipe; 2013, second water inlet pipe;

[0024] 301, saucer; 302, water flowing piece; 303, rectangular block; 304, L-shaped rod; 305, circular block; 306, shaft rod; 307, limiting piece; 308, circular groove; 309, threaded rod. DETAILED DESCRIPTION

[0025] In order to make the above-mentioned purpose, features and advantages of the present application more apparent and easy to understand, the following will make detailed description on the specific implementation of the present application in combination with the drawings.

[0026] In the following description, many specific details are set forth in order to provide a thorough understanding of the present application, but the present application can also be implemented in other ways different from the description, and those skilled in the art can make similar generalization without departing from the connotation of the present application, therefore, the present application is not limited by the specific implementation disclosed below.

[0027] In order to make the purpose, technical scheme and advantages of the present application more clear, the following will make further detailed description on the implementation of the present application in combination with the drawings.

[0028] Please refer to Figs. 1-3The embodiment shown is a total nitrogen removal device for nitric acid pickling copper wastewater, comprising:

[0029] The blow-off tower body 101 is fixedly installed with the exhaust chimney 102 at the top.

[0030] The blow-off tower body 101 provides a space for wastewater purification, and the exhaust chimney 102 is used for discharging the purified nitrogen.

[0031] The high-efficiency removal assembly comprises a PH adjusting and heating tank 201, a main pipe 202, a spraying circulating pipe 203, a drain pipe 204, a first filler layer 205, a second filler layer 206, and a centrifugal fan 207.

[0032] The PH adjusting and heating tank 201 is used for neutralizing and heating the wastewater, the main pipe 202 separates the wastewater into two spraying circulating pipes 203, the drain pipe 204 discharges the wastewater, the first filler layer 205 and the second filler layer 206 react with the total nitrogen ions in the wastewater, and the setting of the centrifugal fan 207 guarantees the air inlet.

[0033] The high-efficiency removal assembly further comprises a blow-off tank 208 and a water outlet pipe 209.

[0034] The blow-off tank 208 is used for removing volatile components in the liquid, and the water outlet pipe 209 is used for discharging the purified wastewater.

[0035] The high-efficiency removal assembly further comprises a spraying circulating pump 2010, a receiving pipe 2011, a first water inlet pipe 2012, and a second water inlet pipe 2013.

[0036] The spray circulation pump 2010 provides electrical energy for the water circulation, the receiving pipe 2011 and the first inlet pipe 2012 are used to transmit water flow, and the second inlet pipe 2013 provides a guarantee for the wastewater to enter the pH adjustment heating tank 201.

[0037] It also includes a high-efficiency spraying component, which includes a water spraying disc 301 and a water flow plate 302. The bottom of the drain pipe 204 is movably connected to the water spraying disc 301, and the water flow plate 302 is fixedly connected to the four sides of the water spraying disc 301. The water flow plate 302 is installed at an angle.

[0038] The inclined installation of the water vane 302 ensures that an external force is generated to drive the water spray disc 301 to rotate.

[0039] The high-efficiency sprinkler assembly also includes a rectangular block 303, an L-shaped rod 304, a circular block 305, a shaft 306, a limiting piece 307, and a circular groove 308. The bottom of both sides of the drain pipe 204 is fixedly connected to the rectangular block 303. The bottom of the rectangular block 303 is fixedly connected to one end of the L-shaped rod 304. The other end of the L-shaped rod 304 is fixedly connected to the circular block 305. The bottom of the circular block 305 is fixedly connected to the shaft 306. The bottom of the shaft 306 is fixedly connected to the limiting piece 307. A circular groove 308 is opened through the middle of the sprinkler disc 301. The circular groove 308 is movably connected to the shaft 306. The height of the shaft 306 is greater than the thickness of the sprinkler disc 301.

[0040] The rectangular block 303, the L-shaped rod 304, and the circular block 305 all serve to connect the supporting components. The circular groove 308 provides a guarantee for the water spray disc 301 to rotate along the shaft 306. The limiting piece 307 restricts the movement range of the water spray disc 301.

[0041] The high-efficiency spray assembly also includes a threaded rod 309, and the threaded rod 309 is fixedly connected to the top of the circular block 305;

[0042] The threaded rod 309 allows some water to flow down in a spiral pattern, which assists in the rotation of the sprinkler disc 301.

[0043] Working principle: first by the second water inlet pipe 2013 into wastewater to PH adjustment heating tank 201, then the wastewater PH value is adjusted to 11, while heating the wastewater temperature to 35 degrees, open the spray circulating pump 2010, through the adapter pipe 2011 into wastewater in the spray circulating pipe 203, then flow through the upper and lower two spray circulating pipe 203, then through the drain pipe 204, part of the wastewater along the threaded rod 309 spiral down, another part of the wastewater falls to the sprinkler 301, and flows to the water flow piece 302, at this time the wastewater generates impact force on the water flow piece 302, thereby driving the sprinkler 301 to rotate along the shaft 306, then open the centrifugal fan 207 to pass air into the wastewater, the air is below the blow-off tower body 101 and fills the air inlet end space, then uniformly rises to the first packing layer 205 and the second packing layer 206, on the surface of the first packing layer 205 and the second packing layer 206, the gas-liquid phase is in contact with each other, the dissolved free ammonia in the wastewater passes through the gas-liquid interface and transfers to the gas phase, and finally is discharged through the exhaust chimney 102, and then the wastewater flows into the blow-off tank 208 at the bottom of the blow-off tower body 101 for treatment, and then the wastewater enters the PH adjustment heating tank 201 again through the first water inlet pipe 2012 for cyclic treatment, so that the ammonia nitrogen and total nitrogen can be deeply removed.

[0044] In the description of the present application, it should be further pointed out that, unless otherwise explicitly specified and limited, the terms "arrangement", "installation", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or indirectly connected through an intermediate medium, or it can be the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0045] Finally, it should be pointed out that: the above only for the preferred embodiments of the present application, and not for limiting the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A total nitrogen removal device for copper pickling wastewater treated with nitric acid, characterized in that, include: The stripping tower body (101) and the exhaust chimney (102) are fixedly installed on the top of the stripping tower body (101); The high-efficiency removal component includes a pH adjusting heating tank (201), a main pipe (202), a spray circulation pipe (203), a drain pipe (204), a first packing layer (205), a second packing layer (206), and a centrifugal fan (207). The side of the stripping tower body (101) is provided with a pH adjusting heating tank (201), the top of the pH adjusting heating tank (201) is provided with a main pipe (202), the main pipe (202) is connected to the spray circulation pipe (203) in stages, the bottom of the spray circulation pipe (203) is fixedly inserted with a drain pipe (204), the first packing layer (205) and the second packing layer (206) are fixedly installed in the stripping tower body (101), and the air outlet of the centrifugal fan (207) is fixedly connected to the side of the stripping tower body (101).

2. The total nitrogen removal equipment for copper pickling wastewater according to claim 1, characterized in that, The high-efficiency removal component also includes a stripping tank (208) and a water outlet pipe (209). The stripping tower body (101) and the pH adjustment heating tank (201) are provided with a stripping tank (208), and the water outlet pipe (209) is fixedly installed on the stripping tank (208).

3. The total nitrogen removal equipment for copper pickling wastewater according to claim 2, characterized in that, The high-efficiency removal component also includes a spray circulation pump (2010), a receiving pipe (2011), a first water inlet pipe (2012), and a second water inlet pipe (2013). The top of the pH adjusting heating tank (201) is equipped with a spray circulation pump (2010). The side of the spray circulation pump (2010) is fixedly connected to one end of the receiving pipe (2011). The receiving pipe (2011) is inserted into the pH adjusting heating tank (201). The side of the stripping tank (208) is fixedly inserted into one end of the first water inlet pipe (2012). The other end of the first water inlet pipe (2012) is inserted into the pH adjusting heating tank (201). The second water inlet pipe (2013) is connected to the pH adjusting heating tank (201).

4. The total nitrogen removal equipment for copper pickling wastewater according to claim 1, characterized in that, It also includes a high-efficiency spraying assembly, which includes a water spraying disc (301) and a water flow plate (302). The bottom of the drain pipe (204) is movably connected to the water spraying disc (301), and the water flow plate (302) is fixedly connected to the sides of the water spraying disc (301). The water flow plate (302) is installed at an angle.

5. The total nitrogen removal equipment for copper pickling wastewater according to claim 4, characterized in that, The high-efficiency spray assembly also includes a rectangular block (303), an L-shaped rod (304), a circular block (305), a shaft (306), a limiting piece (307), and a circular groove (308). The bottom of both sides of the drain pipe (204) is fixedly connected to the rectangular block (303). The bottom of the rectangular block (303) is fixedly connected to one end of the L-shaped rod (304), and the other end of the L-shaped rod (304) is fixedly connected to the circular block (305). The bottom of the circular block (305) is fixedly connected to the shaft (306), and the bottom of the shaft (306) is fixedly connected to the limiting piece (307). A circular groove (308) is opened through the middle of the water spray disc (301), and the circular groove (308) is movably connected to the shaft (306). The height of the shaft (306) is greater than the thickness of the water spray disc (301).

6. The total nitrogen removal equipment for copper pickling wastewater according to claim 5, characterized in that, The high-efficiency spray assembly also includes a threaded rod (309), which is fixedly connected to the top of the circular block (305).

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