Combined treatment device for acid-base industrial wastewater

Abstract

The utility model relates to an acid-base industrial wastewater combined treatment device which comprises a device main body, a reaction chamber and at least two impurity removal chambers are arranged in the device main body, each impurity removal chamber is provided with a feed port and a discharge port, the discharge port is communicated with the reaction chamber through a pipeline, and the discharge port is communicated with the reaction chamber through a pipeline. The impurity removal chamber is internally provided with a filter screen and an air outlet unit which are sequentially distributed from top to bottom, the air outlet unit is provided with a plurality of air outlets, the reaction chamber is provided with a feeding port, a water outlet and a sewage draining exit, the reaction chamber is internally provided with a pressing plate, the pressing plate comprises a screen part and a scraping ring part arranged around the side face of the screen part, and the scraping ring part is arranged in the reaction chamber. The scraping ring part abuts against the side wall of the reaction chamber, a lifting driving piece is arranged at the top of the reaction chamber, and the output end of the lifting driving piece is connected with the pressing plate. The device has the advantages of high filtering efficiency, good purification effect and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to a device for combined treatment of acidic and alkaline industrial wastewater. Background Art

[0002] Currently, the quality of industrial wastewater varies significantly. Once discharged into natural water bodies, this wastewater can cause water pollution. This is especially true for acidic and alkaline wastewater. If left untreated, this can ultimately lead to a range of environmental problems and water shortages. Therefore, the purification and treatment of industrial wastewater are playing an increasingly important role in environmental pollution control. Currently, the treatment of acidic and alkaline wastewater primarily involves adding flocculants or precipitants to the wastewater to settle the impurities, followed by separation.

[0003] Due to the presence of a large amount of solid impurities in the wastewater of some industries, the current acid-base wastewater treatment equipment usually has problems of low filtration efficiency and slow filtration speed, which affects the overall treatment efficiency. In addition, the treated water body will always be mixed with some waste residue sludge formed during the precipitation reaction, and the purification is not thorough. It requires repeated treatment to meet the emission standards, which is time-consuming and labor-intensive. Utility Model Content

[0004] In view of this, in order to solve the problems existing in the above-mentioned prior art, the utility model provides a combined treatment device for acidic and alkaline industrial wastewater.

[0005] The purpose of this utility model is achieved through the following technical solutions:

[0006] A combined treatment device for acidic and alkaline industrial wastewater comprises a device body, wherein a reaction chamber and at least two impurity removal chambers are provided in the device body, the impurity removal chamber is provided with a feed port and a discharge port, the discharge port is connected to the reaction chamber through a pipeline, a filter screen and an air outlet unit are distributed in sequence up and down in the impurity removal chamber, the air outlet unit is provided with multiple air outlets, the reaction chamber is provided with a feed port, a water outlet and a sewage outlet, a pressure plate is provided inside the reaction chamber, the pressure plate comprises a screen portion and a scraping ring portion arranged around the side of the screen portion, the scraping ring portion is abutted against the side wall of the reaction chamber, a lifting drive member is provided on the top of the reaction chamber, and the output end of the lifting drive member is connected to the pressure plate.

[0007] In the above technical solution, when treating wastewater, acidic wastewater and alkaline wastewater enter different impurity removal chambers through the feed port respectively. The filter screen in the impurity removal chamber filters the wastewater and blocks some solid impurities in the wastewater. An air outlet unit is provided below the filter screen. During filtering, the air outlet unit sprays air toward the filter screen through multiple air outlets, which can loosen impurities stuck in the gap of the filter screen and lift them up by the air flow, thereby effectively avoiding clogging of the filter screen and ensuring filtration efficiency. The filtered acidic wastewater and alkaline wastewater enter the reaction chamber through the discharge port at the bottom of the impurity removal chamber for neutralization. A feeding port is provided on the side wall of the reaction chamber. After the acidic wastewater and the alkaline wastewater enter the reaction chamber and are mixed, a flocculant or precipitant is added through the feeding port to make the small particles of solid impurities and some dissolved substances in the wastewater condense and precipitate at the bottom of the reaction chamber to form waste residue sludge. Subsequently, the liquid part is discharged through the water outlet on the side of the reaction chamber. The waste residue sludge is discharged through the reaction chamber. The wastewater is discharged from the drain outlet at the bottom of the chamber. After the wastewater in the reaction chamber completes sedimentation and stratification, the lifting drive member drives the pressure plate to move downward so that the pressure plate is close to the stratification position of the water body and the waste residue sludge. The screen part of the pressure plate can block the waste residue, and the scraper ring part can scrape off the waste residue sludge attached to the inner wall of the reaction chamber, so that all the waste residue sludge is concentrated under the pressure plate. After the pressure plate reaches the stratification position, the water outlet is opened to discharge the upper layer of the treated water body. After the water body is drained, the drain outlet at the bottom is opened to discharge the waste residue. Under the action of the pressure plate, it can be ensured that no waste residue sludge remains in the discharged water body, thereby ensuring the purification effect of the wastewater. In addition, after a long period of wastewater treatment, a certain amount of waste liquid will remain on the inner wall of the reaction chamber, which may cause corrosion of the inner wall in the long run. When cleaning the reaction chamber, after water is passed into the interior of the reaction chamber, the pressure plate can be driven to move up and down, and the scraper ring part on the outside can be used to brush the inner wall of the reaction chamber to improve the cleaning effect.

[0008] Furthermore, the air outlet unit includes a diversion pipe and a plurality of air outlet pipes connected to the diversion pipe, the air outlet pipes are arranged in parallel, and the air outlets are distributed at intervals on the air outlet pipes.

[0009] In the above technical solution, the diverter pipe is used to disperse the concentrated airflow into each outlet pipe, and then discharge it through the outlet ports distributed at intervals on the outlet pipe, so that the discharge of the airflow is more uniform.

[0010] Furthermore, an air pump is provided on the top of the device body, and the air pump is provided with an air supply pipe, and the air pump is connected to the diversion pipe through the air supply pipe.

[0011] In the above technical solution, the air pump can draw air from the outside and transport the gas to the diversion pipe in the impurity removal chamber through the air pipe.

[0012] Furthermore, an exhaust valve is provided on the top of the impurity removal chamber.

[0013] In the above technical solution, the exhaust valve is used to exhaust the gas inside the impurity removal chamber to adjust the pressure inside the impurity removal chamber.

[0014] Furthermore, a mounting groove penetrating along the thickness direction is provided on the side wall of the impurity removal chamber, a movable block is slidably installed in the mounting groove, and the movable block is connected to the filter screen.

[0015] In the above technical solution, the filter screen inside the impurity removal chamber can be dragged out by the movable block, which is convenient for maintenance and care of the filter screen. A handle is provided on the movable block to facilitate dragging the movable block out.

[0016] Furthermore, the scraper ring portion is an elastic structure with a smooth surface.

[0017] In the above technical solution, the surface of the scraper ring is smooth and has a certain elasticity, so that it can fully contact the inner wall of the reaction chamber, improve the scraping effect, and at the same time, prevent the side wall of the reaction chamber from being scratched when moving up and down.

[0018] Furthermore, an acid-base detector is provided on one side of the reaction chamber, and an electromagnetic control valve is installed on the water outlet.

[0019] In the above technical solution, under normal circumstances, the amount of waste acid and waste alkali in the acidic wastewater and alkaline wastewater entering the reaction chamber is unbalanced and cannot be neutralized exactly, so that the quality of the treated water does not meet the requirements of the discharge standard. Therefore, it is necessary to manually add some acidic and alkaline substances from the feeding port to adjust the pH. The acid-base detector is used to detect the pH of the internal water body. After the pH reaches the discharge standard, the electromagnetic control valve on the water outlet can be controlled by the control system to open, thereby discharging the water body.

[0020] Furthermore, a guide plate is provided at the bottom of the reaction chamber, and the guide plate surrounds the sewage outlet and is inclined toward the sewage outlet.

[0021] In the above technical solution, the sewage outlet is located at the center of the bottom of the reaction chamber, and the surface of the guide plate is inclined downward toward the sewage outlet, and the overall shape is an inverted cone. The inclined guide plate is used to guide the waste residue and sludge to the sewage outlet for centralized discharge, while also effectively preventing the waste residue and sludge from remaining inside the reaction chamber.

[0022] Furthermore, the sewage outlet is connected to a sewage pipe, and a sewage valve and a sewage pump are installed on the sewage pipe.

[0023] In the above technical solution, the sewage valve is used to control the opening and closing of the sewage pipe, and the sewage pump is used to provide power to pump out the waste residue and sludge inside the reaction chamber.

[0024] Compared with the prior art, the present invention has the following advantages:

[0025] The present application provides a filter screen and an air outlet unit distributed up and down in the impurity removal chamber. During filtering, the air outlet unit can spray air toward the filter screen through multiple air outlets, so that impurities stuck in the gap of the filter screen are loosened and lifted up by the air flow, thereby effectively avoiding clogging of the filter screen and ensuring filtration efficiency; the present application provides a pressure plate that moves up and down. After the impurities inside the wastewater are precipitated to form waste residue sludge, the pressure plate can be moved down to block the precipitated waste residue sludge. At the same time, the scraping ring part on the edge of the pressure plate can scrape off part of the waste residue sludge attached to the inner wall, thereby avoiding the waste residue sludge from mixing into the treated water body, effectively improving the purification effect of the wastewater. In addition, when cleaning the reaction chamber, the pressure plate can also move up and down, and use the scraping ring part to brush the inside of the reaction chamber to improve the cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0027] Figure 1 This is a schematic structural diagram of a combined acid and alkaline industrial wastewater treatment device according to one embodiment.

[0028] Figure 2 This is an enlarged view of area A in the figure.

[0029] Figure 3 This is a top view of the air outlet unit of this application.

[0030] Description of reference numerals in the figures:

[0031] 1-Device body; 2-Impurity removal chamber; 21-Feed port; 22-Discharge port; 23-Filter screen; 24-Air outlet unit; 241-Diverter pipe; 242-Air outlet pipe; 243-Air outlet; 25-Movable block; 251-Handle; 26-Exhaust valve; 3-Reaction chamber; 31-Feed port; 32-Water outlet; 321-Solenoid control valve; 33-Sewage outlet; 34-Pressing plate; 341-Screen part; 342-Scraper ring part; 35-Acid-base detector; 36-Guide plate; 37-Lifting drive component; 4-Sewage pipe; 41-Sewage valve; 42-Sewage pump; 5-Air pump; 51-Air supply pipe. DETAILED DESCRIPTION

[0032] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the following will be combined with the accompanying drawings for the embodiments of the present application to make a clear and complete description of the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only some but not all of the embodiments of the present application. The components of the embodiments of the present application described and shown in the accompanying drawings can be arranged and designed in various different configurations.

[0033] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work are within the scope of protection of the present application.

[0034] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0035] Please refer to Figures 1 to 3 In a preferred embodiment of the present application, a combined treatment device for acid and alkaline industrial wastewater is provided, which comprises a device main body 1, a reaction chamber 3 and two impurity removal chambers 2 are arranged in the device main body 1, the impurity removal chamber 2 is provided with a feeding port 21 and a discharging port 22, the discharging port 22 is communicated with the reaction chamber 3 through a pipeline, the impurity removal chamber 2 is provided with a filter screen 23 and a gas outlet unit 24 arranged in sequence from top to bottom, the gas outlet unit 24 is provided with a plurality of gas outlets 243, the reaction chamber 3 is provided with a feeding port 31, a water outlet 32 and a pollution discharge port 33, the reaction chamber 3 is internally provided with a pressing plate 34, the pressing plate 34 comprises a screen part 341 and a scraping ring part 342 arranged around the side of the screen part 341, the scraping ring part 342 abuts against the side wall of the reaction chamber 3, the top of the reaction chamber 3 is provided with a lifting driving element 37, the output end of the lifting driving element 37 is connected with the pressing plate 34.

[0036] Specifically, the two impurity removal chambers 2 are arranged symmetrically above the reaction chamber 3, the feeding port 21 is arranged at the top of the impurity removal chamber 2, the discharging port 22 is arranged at the bottom of the impurity removal chamber 2, and the output end of the lifting driving element 37 penetrates through the top of the reaction chamber 3, so as to be connected with the pressing plate 34 inside the reaction chamber 3.

[0037] In this embodiment, when treating wastewater, acidic wastewater and alkaline wastewater enter the two impurity removal chambers 2 respectively through the feed port 21, and the filter screen 23 in the impurity removal chamber 2 filters the wastewater to block some solid impurities in the wastewater, wherein an air outlet unit 24 is provided below the filter screen 23. During filtering, the air outlet unit 24 sprays air toward the filter screen 23 through multiple air outlets 243, which can loosen impurities stuck in the gap of the filter screen 23 and lift them up by the air flow, thereby effectively avoiding clogging of the filter screen 23 and ensuring the filtering efficiency. The acidic wastewater and alkaline wastewater after filtering and impurity removal enter the reaction chamber 3 through the discharge port 22 for neutralization. A feeding port 31 is provided on the side wall of the reaction chamber 3. After the acidic wastewater and alkaline wastewater enter the reaction chamber 3 and mix, a precipitant is added through the feeding port 31 to make the small particles in the wastewater solid The solid impurities and part of the dissolved matter condense and settle at the bottom of the reaction chamber 3 to form waste sludge. Subsequently, the liquid part is discharged through the water outlet 32 ​​on the side of the reaction chamber 3, and the waste sludge is discharged through the sewage outlet 33 at the bottom of the reaction chamber 3. After the wastewater in the reaction chamber 3 completes sedimentation and stratification, the lifting drive 37 drives the pressing plate 34 to move downward, so that the pressing plate 34 is close to the stratification position of the water body and the waste sludge. The pores of the screen part 341 of the pressing plate 34 are smaller than the waste sludge, so that the waste sludge can be blocked. The scraping ring part 342 can scrape off the waste sludge attached to the inner wall of the reaction chamber 3, so that all the waste sludge is concentrated under the pressing plate 34. After the pressing plate 34 reaches the stratification position, the water outlet 32 ​​is opened to discharge the water part of the upper layer that has been processed. After the water body is drained, the sewage outlet 33 at the bottom is opened to discharge the waste sludge.

[0038] After the waste residue and sludge are settled, their height is lower than the water outlet 32 ​​, and after the pressing plate 34 moves downward, its height is also lower than the height of the water outlet 32 ​​to ensure that the waste residue and sludge will not be mixed in when the water is discharged from the water outlet 32 ​​.

[0039] It should be noted that the flow rate of the feed port 21 of the impurity removal chamber 2 is greater than the flow rate of the discharge port 22, so that the wastewater can accumulate to a certain height after entering the impurity removal chamber 2 and submerge the filter 23, thereby avoiding the direct collision of the gas ejected from the air outlet unit 24 and the wastewater falling from the feed port 21, so as to ensure that the airflow ejected from the air outlet unit 24 can smoothly lift the impurities in the gap of the filter 23. In addition, a valve for controlling the switch is provided on the pipeline connecting the impurity removal chamber 2 and the reaction chamber 3 (not specifically shown in the figure). After a certain amount of wastewater accumulates inside the impurity removal chamber 2, the valve is opened to pass the wastewater into the reaction chamber 3.

[0040] Please refer to Figure 3In this embodiment, the air outlet unit 24 includes a diverter pipe 241 and multiple air outlet pipes 242 connected to the diverter pipe 241. The air outlet pipes 242 are distributed in parallel and at intervals, and are vertically connected to the diverter pipe 241. The air outlets 243 are distributed at intervals on the air outlet pipe 242. The diverter pipe 241 is used to disperse the concentrated air flow into each air outlet pipe 242, and then discharge it through the air outlets 243 distributed at intervals on the air outlet pipe 242, so that the discharge of the air flow is more uniform.

[0041] Please refer to Figure 2 and Figure 3 In this embodiment, an air pump 5 is provided on the top of the device body 1. The air pump 5 is provided with two air pipes 51. The two air pipes 51 are respectively connected to the branch pipes 241 in the two impurity removal chambers 2. The air pump 5 can draw air from the outside and transport the gas to the branch pipes 241 in the impurity removal chamber 2 through the air pipes 51.

[0042] Please refer to Figure 1 In this embodiment, an exhaust valve 26 is provided on the top of the impurity removal chamber 2 , and the exhaust valve 26 is used to exhaust the gas inside the impurity removal chamber 2 to adjust the pressure inside the impurity removal chamber 2 .

[0043] Please refer to Figure 1 In this embodiment, a mounting groove is provided on the side wall of the impurity removal chamber 2 and passes through in the thickness direction. A movable block 25 is slidably installed in the mounting groove. The movable block 25 is connected to the filter screen 23. The filter screen 23 inside the impurity removal chamber 2 can be dragged out through the movable block 25, which is convenient for maintenance and maintenance of the filter screen 23. A handle 251 is provided on the movable block 25 to facilitate dragging the movable block out.

[0044] Please refer to Figure 2 In this embodiment, the scraping ring portion 342 is an elastic structure with a smooth surface. The surface of the scraping ring portion 342 is smooth and has a certain elasticity, so that it can fully contact the inner wall of the reaction chamber 3, improve the scraping effect, and at the same time, prevent the side wall of the reaction chamber 3 from being scratched when moving up and down.

[0045] Please refer to Figure 1 In this embodiment, a pH detector 35 is provided on one side of the reaction chamber 3, and an electromagnetic control valve 321 is installed on the water outlet 32. Usually, the amount of waste acid and waste alkali in the acidic wastewater and alkaline wastewater entering the reaction chamber 3 is unbalanced and cannot be exactly neutralized, so that the quality of the treated water does not meet the requirements of the discharge standard. Therefore, it is necessary to manually add some acidic and alkaline substances from the feeding port 31 to adjust the pH. The pH detector 35 is used to detect the pH of the internal water body. After the pH reaches the discharge standard, the electromagnetic control valve 321 on the water outlet 32 ​​can be controlled by the control system to open, thereby discharging the water body.

[0046] Specifically, after the precipitation reaction is completed inside the reaction chamber 3, the pH value of the water above is tested by the acid-base detector 35. If the pH value does not meet the discharge standard, the corresponding acidic or alkaline regulating substance is added through the feeding port 31.

[0047] Please refer to Figure 1 In this embodiment, a guide plate 36 is provided at the bottom of the reaction chamber 3, and the sewage outlet 33 is located at the center of the bottom of the reaction chamber 3. The guide plate 36 is arranged around the sewage outlet 33, and the plate surface of the guide plate 36 is inclined downward in the direction of the sewage outlet 33. The whole is in the shape of an inverted cone. The waste residue and sludge are guided to the sewage outlet 33 by the inclined guide plate 36, which is convenient for centralized discharge and can effectively prevent the waste residue and sludge from remaining inside the reaction chamber 3.

[0048] Please refer to Figure 1 In this embodiment, the sewage outlet 33 is connected to the sewage pipe 4, and the sewage pipe 4 is installed with a sewage valve 41 and a sewage pump 42. The sewage valve 41 is used to control the switch of the sewage pipe 4, and the sewage pump 42 is used to provide power to suck out the waste residue and sludge inside the reaction chamber 3.

[0049] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

[0050] In the description of the present invention, it should be understood that terms such as "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0051] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

Claims

1. A combined treatment device for acidic and alkaline industrial wastewater, characterized in that: The invention comprises a device body, wherein a reaction chamber and at least two impurity removal chambers are provided in the device body, the impurity removal chamber is provided with a feed port and a discharge port, the discharge port is connected to the reaction chamber through a pipeline, a filter screen and an air outlet unit are distributed in sequence up and down in the impurity removal chamber, the air outlet unit is provided with multiple air outlets, the reaction chamber is provided with a feed port, a water outlet and a sewage outlet, a pressure plate is provided inside the reaction chamber, the pressure plate comprises a screen portion and a scraping ring portion arranged around the side of the screen portion, the scraping ring portion is against the side wall of the reaction chamber, a lifting drive member is provided on the top of the reaction chamber, and the output end of the lifting drive member is connected to the pressure plate.

2. The combined treatment device for acidic and alkaline industrial wastewater according to claim 1, characterized in that: The air outlet unit includes a diversion pipe and a plurality of air outlet pipes connected to the diversion pipe. The air outlet pipes are arranged in parallel, and the air outlets are distributed at intervals on the air outlet pipes.

3. The combined treatment device for acidic and alkaline industrial wastewater according to claim 2, characterized in that: An air pump is provided on the top of the device body, and the air pump is provided with an air delivery pipe. The air pump is connected to the diversion pipe through the air delivery pipe.

4. The combined treatment device for acidic and alkaline industrial wastewater according to claim 1, characterized in that: An exhaust valve is provided on the top of the impurity removal chamber.

5. The combined treatment device for acidic and alkaline industrial wastewater according to claim 1, characterized in that: A mounting groove penetrating along the thickness direction is provided on the side wall of the impurity removal chamber, a movable block is slidably installed in the mounting groove, and the movable block is connected to the filter screen.

6. The combined treatment device for acidic and alkaline industrial wastewater according to claim 1, characterized in that: The scraper ring portion is an elastic structure with a smooth surface.

7. The combined treatment device for acidic and alkaline industrial wastewater according to claim 1, characterized in that: An acid-base detector is provided on one side of the reaction chamber, and an electromagnetic control valve is installed on the water outlet.

8. The combined treatment device for acidic and alkaline industrial wastewater according to claim 1, characterized in that: A guide plate is provided at the bottom of the reaction chamber, and the guide plate surrounds the sewage outlet and is inclined toward the sewage outlet.

9. The combined treatment device for acidic and alkaline industrial wastewater according to claim 1, characterized in that: The sewage outlet is connected to a sewage pipe, and a sewage valve and a sewage pump are installed on the sewage pipe.

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