Solid-liquid separation device for waste water containing alumina particles

Abstract

The utility model provides a solid-liquid separation device for waste water containing alumina particles, which relates to the technical field of waste water treatment and processing and comprises a waste water pool, a liquid discharge pipe arranged on the waste water pool, a first electromagnetic valve arranged on the liquid discharge pipe, a slurry pump connected with the liquid discharge pipe, and an alumina filter press connected with the slurry pump. A storage box is placed below the aluminum oxide filter press, a discharging hopper is arranged at the bottom of the aluminum oxide filter press, a discharging opening of the discharging hopper is communicated with the interior of the storage box with the blocked upper portion through a conveying pipe, and a staying table with a radian and a filtering plate are sequentially arranged in the storage box from top to bottom; according to the device, the aluminum oxide filter press is adopted to carry out primary solid-liquid separation on waste water containing aluminum oxide particles, all filtrate flows into the storage box after separation, the phenomenon that the filtrate splashes to the outside and is wasted is avoided, and a flocculating agent is subsequently matched to react with tiny aluminum oxide, so that the removal effect of the aluminum oxide particles is more thorough; furthermore, the treatment effect on the wastewater is better.

Description

Technical Field

[0001] The utility model relates to the technical field of wastewater treatment and processing, in particular to a solid-liquid separation device for wastewater containing aluminum oxide particles. Background Art

[0002] The alumina industry needs to add a large amount of alkali during the production process, and water enters the production process as a carrier in the alumina production process. The wastewater in the alumina industry is mainly alkaline wastewater. Due to the complex composition of the wastewater, the pH value and the content of suspended solids vary widely. If it is not handled properly, it will not only produce a large amount of industrial wastewater to pollute the surrounding environment, but also cause a large amount of alkali, alumina and water to be lost, which will eventually lead to higher costs.

[0003] At present, alumina filter press is generally used for solid-liquid separation of wastewater containing alumina particles. However, in this process, the filtered water will drip everywhere into the storage box below, causing splashing and waste. At the same time, the alumina filter press alone cannot effectively remove tiny particles or low-concentration alumina, and the solid-liquid separation effect needs to be further improved. Utility Model Content

[0004] The purpose of the utility model is to solve the problems raised in the above background technology, and then propose a solid-liquid separation device for wastewater containing aluminum oxide particles.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] A solid-liquid separation device for wastewater containing alumina particles comprises a wastewater pool, a drain pipe is arranged on the wastewater pool, a first solenoid valve is arranged on the drain pipe, the drain pipe is connected to a mud pump, the mud pump is connected to an alumina filter press, a storage box is placed below the alumina filter press, a lower hopper is arranged at the bottom of the alumina filter press, a discharge port of the lower hopper is connected to the interior of the storage box blocked above through a conveying pipe, a stop table with an arc and a filter plate are arranged in sequence from top to bottom in the storage box, a discharge pipe is arranged on the stop table and a second solenoid valve is arranged on the discharge pipe, a suction pump is arranged on one side of the storage box, an input end of the suction pump is connected to a flocculant box, an output end of the suction pump is connected to the interior of the storage box and is located above the stop table, and the filter plate is movably installed inside the storage box and is connected to a mounting assembly.

[0007] This device uses an alumina filter press to perform preliminary solid-liquid separation on wastewater containing alumina particles. After the separation is completed, all the filtrate flows into the storage box without any splashing or waste to the outside. Subsequently, a flocculant is used to react with tiny alumina to make the removal of alumina particles more thorough, thereby achieving a better treatment effect on the wastewater.

[0008] Furthermore, the installation assembly includes an insert block and a handle, one end of the filter plate is connected to the insert block, a socket matching the insert block is provided on one side wall of the storage box, the insert block is provided with a handle and the filter plate is plugged into the interior of the storage box.

[0009] The above scheme can realize the convenient placement and removal of the filter plate in the storage box by installing the components, thereby facilitating the collection of the aluminum oxide precipitate or the cleaning of the filter plate.

[0010] Furthermore, a sealing rubber ring is provided on the plug block.

[0011] The above scheme can improve the sealing effect of the filter plate after it is installed in the storage box through the sealing rubber ring, thereby reducing the probability of filtrate overflow during the solid-liquid separation process.

[0012] Furthermore, an oil separator is provided between the drainage pipe and the mud pump.

[0013] The above scheme can pre-filter the grease in the wastewater through the grease trap before the solid-liquid separation by filter pressing of the alumina particles, so that a purer liquid product can be obtained later.

[0014] Furthermore, the storage box is provided with an air pump, the air pump is connected to a three-way pipe, two output pipelines of the three-way pipe are respectively connected to air pipes, the two air pipes respectively pass through the storage box and are connected to two main pipes fixed in the storage box, and each main pipe is provided with a plurality of nozzles.

[0015] The above scheme can perform air jet stirring after adding flocculant through an air pump in conjunction with a tee pipe, an air pipe, a main pipe and a nozzle, thereby causing several small precipitates to aggregate into a large precipitate, further improving the separation effect of alumina particles in wastewater.

[0016] Furthermore, the bottom of the storage box is connected to a circulation pump, the input end of the circulation pump is located below the filter plate, and the output end of the circulation pump is connected to the regulating tank.

[0017] Furthermore, a double filter is arranged between the circulation pump and the storage box, and an input end of the double filter is connected to the interior of the storage box and is located below the filter plate.

[0018] The above scheme can use a circulating pump to pump the filtrate that has completed the separation of alumina particles into the double filter for double filtration to further reduce the impurity content in the filtrate. After the filtration is completed, it is finally passed into the regulating tank for subsequent pH adjustment.

[0019] Compared with the prior art, the beneficial effects of the utility model are:

[0020] Compared with the existing technology, this device uses an alumina filter press to perform preliminary solid-liquid separation on wastewater containing alumina particles. After the separation is completed, all the filtrate flows into the storage box without any splashing or waste to the outside, achieving sealed transportation. Subsequently, a flocculant is used to react with the micro-alumina particles to make the removal of the alumina particles more thorough, thereby achieving a better treatment effect on the wastewater. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 This is a schematic diagram of the installation of the parking platform;

[0023] Figure 3 This is a schematic diagram of the filter plate installation;

[0024] Reference numerals:

[0025] 1. Wastewater tank; 11. Drain pipe; 12. First solenoid valve; 2. Grease trap; 21. Mud pump; 3. Alumina filter press; 31. Lower hopper; 32. Delivery pipe; 4. Storage box; 41. Stop platform; 42. Discharge pipe; 43. Second solenoid valve; 44. Suction pump; 45. Filter plate; 46. Insert block; 47. Handle; 48. Sealing rubber ring; 5. Double filter; 6. Circulation pump; 71. Air pump; 72. Tee pipe; 73. Air pipe; 74. Main pipe; 75. Nozzle. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. The utility model is further described in combination with the drawings and embodiments:

[0027] like Figures 1 to 3As shown, a solid-liquid separation device for wastewater containing alumina particles comprises a wastewater tank 1, a drain pipe 11 is arranged on the wastewater tank 1, a first solenoid valve 12 is arranged on the drain pipe 11, a mud pump 21 is connected to the drain pipe 11, the mud pump 21 is connected to an alumina filter press 3, a storage box 4 is placed below the alumina filter press 3, a lower hopper 31 is arranged at the bottom of the alumina filter press 3, and a discharge port of the lower hopper 31 is connected to the inside of the storage box 4 blocked above through a conveying pipe 32, and the storage box 4 is connected to the drain pipe 11, and the mud pump 21 is connected to the alumina filter press 3. A curved stop table 41 and a filter plate 45 are arranged in sequence from top to bottom in the box 4, a discharge pipe 42 is arranged on the stop table 41 and a second solenoid valve 43 is arranged on the discharge pipe 42, a suction pump 44 is arranged on one side of the storage box 4, and the input end of the suction pump 44 is connected to the flocculant box, which is not shown in the figure, and the output end of the suction pump 44 is connected to the inside of the storage box 4 and is located above the stop table 41, and the filter plate 45 is movably installed inside the storage box 4 and is connected to a mounting assembly.

[0028] Specifically, the installation component includes an insert block 46 and a handle 47, one end of the filter plate 45 is connected to the insert block 46, and a socket matching the insert block 46 is provided on one side wall of the storage box 4, and the socket is not shown in the figure. The insert block 46 is provided with a handle 47 and the filter plate 45 is plugged into the interior of the storage box 4. Specifically, plug rods are symmetrically provided on the filter plate 45, and slots matching the plug rods are symmetrically provided in the storage box, and the plug rods and the slots are not shown in the figure. For further optimization of the scheme, a sealing rubber ring 48 is provided on the insert block 46; the installation component can realize convenient removal and placement of the filter plate 45 in the storage box 4, thereby facilitating the collection of alumina precipitates or cleaning of the filter plate 45, and the sealing rubber ring 48 can improve the sealing effect of the filter plate 45 after installation in the storage box 4, thereby reducing the probability of overflow of the filtrate during the solid-liquid separation process.

[0029] Further refinement of the embodiment of the present utility model is as follows: Figure 1 As shown, a double filter 5 is connected to the bottom of the storage box 4, the input end of the double filter 5 is below the filter plate 45, the output end of the double filter 5 is connected to a circulation pump 6, and the circulation pump 6 is connected to a regulating tank, which is not shown in the figure.

[0030] It should be noted that the first solenoid valve 12, the mud pump 21, the alumina filter press 3, the second solenoid valve 43, the suction pump 44, the double filter 5 and the circulation pump 6 are all electrically connected to the controller, which is not shown in the figure; the circulation pump 6 can be used to secondary pump the filtrate that has completed the separation of the alumina particles into the double filter 5 for further filtration to further reduce the impurity content in the filtrate. After the filtration is completed, it is finally passed into the regulating tank for subsequent adjustment of the pH value.

[0031] The workflow of this utility model:

[0032] First, the controller controls the first solenoid valve 12 to open, and then the water source in the wastewater tank is injected into the drain pipe 11 and injected into the oil separator 2 along the drain pipe 11 for oil-water separation. When the wastewater flows out to a certain amount, the controller controls the first solenoid valve 12 to close, and then the oil-water separation process starts. The oil separator belongs to the prior art and its principle is not described here. After the oil-water separation is completed, the wastewater flows out from the outlet of the oil separator 2. At the same time, the controller controls the mud pump 21 to work and inject the wastewater into the alumina filter press 3. Then, the alumina filter press 3 is used to separate and remove large particles of alumina in the wastewater. At this time, the large particles of alumina will adhere to the filter cake, but the overall separation is not sufficient. The alumina filter press 3 belongs to the prior art and its working principle is not described here.

[0033] At this time, a small amount of tiny aluminum oxide will be mixed in the filtrate and flow into the lower hopper 31 together and then injected into the storage box 4 along the conveying pipe 32. In the initial state, the second solenoid valve 43 is in a closed state. At this time, the filtrate will stay on the stop table 41, and then the controller controls the suction pump 44 to work to extract a preset fixed volume of flocculant from the flocculant box and add it to the storage box 4. Then the aluminum oxide in the filtrate will react with the flocculant to generate a water-insoluble precipitate. After the reaction time is preset, the controller controls the second solenoid valve 43 to open, and then the precipitate remains on the filter plate 45. The remaining filtrate without aluminum oxide particles flows to the bottom of the storage box 4. At this time, the controller controls the circulation pump 6 to work, and this part of the filtrate will be sucked into the double filter 5 for double filtration to further reduce the impurity content in the filtrate. Then the filtrate is passed into the regulating tank to adjust multiple parameters such as pH value, and it can be reused after the adjustment is completed.

[0034] Compared with the existing technology, this device adopts an alumina filter press 3 to perform preliminary solid-liquid separation on the wastewater containing alumina particles. After the separation is completed, all the filtrate flows into the storage box 4 without any splashing and waste to the outside. Subsequently, a flocculant is used to react with tiny alumina to make the removal of alumina particles more thorough, thereby improving the treatment effect of wastewater.

[0035] In some embodiments, Figure 1 As shown, a grease trap 2 is provided between the discharge pipe 11 and the mud pump 21; in this embodiment, the grease trap 2 can be used to pre-filter the grease in the wastewater before the pressure filtration separation of the alumina particles, so that a purer liquid product can be obtained later.

[0036] In other embodiments, Figure 2As shown, an air pump 71 is provided on the storage box 4, and the air pump 71 is connected to a three-way pipe 72. The two output pipelines of the three-way pipe 72 are respectively connected to the air supply pipe 73. The two air supply pipes 73 pass through the storage box 4 respectively and are connected to two main pipes 74 fixed in the storage box 4. Each main pipe 74 is provided with a plurality of nozzles 75. This embodiment can perform air flow jet stirring after adding a flocculant by means of the air pump 71 in conjunction with the three-way pipe 72, the air supply pipe 73, the main pipe 74 and the nozzle 75, so that a plurality of small precipitates are aggregated into a large precipitate, thereby further improving the separation effect of alumina particles in the wastewater.

[0037] 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 by the above embodiments. The above embodiments and descriptions in the specification are only to illustrate the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the protection required by the utility model. The scope of protection required by the utility model is defined by the attached claims and their equivalents.

Claims

1. A solid-liquid separation device for wastewater containing alumina particles, comprising a wastewater tank (1), a drain pipe (11) is arranged on the wastewater tank (1), a first solenoid valve (12) is arranged on the drain pipe (11), a mud pump (21) is connected to the drain pipe (11), the mud pump (21) is connected to an alumina filter press (3), a storage box (4) is placed below the alumina filter press (3), characterized in that: A lower hopper (31) is provided at the bottom of the alumina filter press (3), and the discharge port of the lower hopper (31) is connected to the interior of a storage box (4) blocked above through a conveying pipe (32). A stop table (41) with an arc and a filter plate (45) are provided in sequence from top to bottom in the storage box (4). A discharge pipe (42) is provided on the stop table (41) and a second solenoid valve (43) is provided on the discharge pipe (42). A suction pump (44) is provided on one side of the storage box (4), and the input end of the suction pump (44) is connected to a flocculant tank, and the output end of the suction pump (44) is connected to the interior of the storage box (4) and is located above the stop table (41). The filter plate (45) is movably installed inside the storage box (4) and is connected to a mounting assembly.

2. A solid-liquid separation device for wastewater containing alumina particles according to claim 1, characterized in that: The mounting assembly comprises an insert block (46) and a handle (47); one end of the filter plate (45) is connected to the insert block (46); a plug hole matching the insert block (46) is provided on a side wall of the storage box (4); the insert block (46) is provided with a handle (47) and the filter plate (45) is plugged into the interior of the storage box (4).

3. A solid-liquid separation device for wastewater containing alumina particles according to claim 2, characterized in that: The insert block (46) is provided with a sealing rubber ring (48).

4. The solid-liquid separation device for wastewater containing alumina particles according to claim 1, characterized in that: A grease trap (2) is provided between the liquid discharge pipe (11) and the mud pump (21).

5. The solid-liquid separation device for wastewater containing alumina particles according to claim 1, characterized in that: The storage box (4) is provided with an air pump (71), the air pump (71) is connected to a three-way pipe (72), two output pipelines of the three-way pipe (72) are respectively connected to air supply pipes (73), the two air supply pipes (73) respectively pass through the storage box (4) and are connected to two main pipes (74) fixed in the storage box (4), and each main pipe (74) is provided with a plurality of nozzles (75).

6. The solid-liquid separation device for wastewater containing alumina particles according to claim 1, characterized in that: The bottom of the storage box (4) is connected to a circulation pump (6), the input end of the circulation pump (6) is located below the filter plate (45), and the output end of the circulation pump (6) is connected to the regulating tank.

7. A solid-liquid separation device for wastewater containing alumina particles according to claim 6, characterized in that: A double filter (5) is arranged between the circulation pump (6) and the storage box (4); the input end of the double filter (5) is connected to the interior of the storage box (4) and is located below the filter plate (45).

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