Apparatus and method for removing urea from wastewater

Abstract

The application discloses a device and method for removing urea in wastewater, and relates to the field of removing urea in wastewater. The device comprises a discharging assembly, the top center of the discharging assembly is fixedly connected with a feeding pipe, the left and right sides of the inner cavity of the discharging assembly are symmetrically rotationally connected with stirring rollers, the back center of the discharging assembly is fixedly connected with a driving structure, the right center of the blast aerator is provided with a movable groove, the opposite sides of the two waterproof corrugated hoses are fixedly connected with first adjusting blocks, the center of each first adjusting block is fixedly connected with a drain pipe, the right side of the bottom of the blast aerator is fixedly connected with an electrolytic cell, the top of the inner cavity of the electrolytic cell is fixedly connected with an ultraviolet irradiation lamp, the center of the inner cavity of the electrolytic cell is fixedly connected with an ultrasonic vibration rod, and the bottom of the inner cavity of the electrolytic cell is fixedly connected with an electrode assembly. The device for removing urea in wastewater has a high removal rate, is simple to operate, and does not need to repeatedly transport the wastewater.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of removal of urea in wastewater, in particular to a device and method for removing urea in wastewater. BACKGROUND

[0002] Wastewater refers to the water discharged in the process of residents' activities and runoff rainwater, which includes domestic sewage, industrial wastewater and initial rain runoff into drainage pipes and other useless water, and generally refers to water without use or no use value.

[0003] Electronic grade pure water is an important production raw material for semiconductor chip manufacturing industry, and has high demand, high water quality requirement, high resistivity and low organic carbon, and its preparation process is complex, difficult and high in cost. At present, contaminated surface water and reclaimed water are mostly used for the preparation of electronic grade pure water. However, due to the technical limitations of the electronic grade pure water treatment process, there are many organic pollutants in it, and urea is the main organic pollutant.

[0004] Therefore, it is necessary to provide a device and method for removing urea in wastewater to solve the above problems. SUMMARY

[0005] The main purpose of the present application is to provide a device and method for removing urea in wastewater, which can effectively solve the problems in the background art.

[0006] To achieve the above purpose, the technical scheme adopted by the present application is:

[0007] A device for removing urea in wastewater, comprising a feeding assembly, a feeding pipe is fixedly connected to the top center of the feeding assembly, stirring rollers are symmetrically rotatably connected to the left and right sides of the inner cavity of the feeding assembly, and a driving structure is fixedly connected to the back center of the feeding assembly;

[0008] The bottom of the feeding assembly is fixedly connected with a blast aerator, the right center of the right side of the blast aerator is provided with a movable groove, the right sides of the top and bottom of the inner cavity of the movable groove are fixedly connected with waterproof corrugated hoses, the opposite sides of the two waterproof corrugated hoses are fixedly connected with first adjusting blocks, and the center of each first adjusting block is fixedly connected with a drain pipe.

[0009] The right side of the bottom of the blast aerator is fixedly connected with an electrolytic cell, the top of the inner cavity of the electrolytic cell is fixedly connected with an ultraviolet irradiation lamp, the center of the inner cavity of the electrolytic cell is fixedly connected with an ultrasonic vibration rod, and the bottom of the inner cavity of the electrolytic cell is fixedly connected with an electrode assembly.

[0010] Preferably, the bottom of the feeding pipe cavity is fixedly connected with a filter screen, the back of the driving structure is fixedly connected with a servo motor in the middle, the front of the servo motor is fixedly connected with a main gear through a first rotating shaft, the left and right sides of the main gear are symmetrically engaged with auxiliary gears, the front of the two auxiliary gears is symmetrically fixed on the back of the two stirring rollers, and the main gear and the auxiliary gears are both rotationally connected in the inner cavity of the driving structure.

[0011] Preferably, the front of the blast aeration tank is fixedly connected with a transparent window in the middle, the front and back of the inner cavity of the movable groove are symmetrically provided with adjusting grooves in the middle, a screw rod is rotationally connected in the inner cavity of the back of the adjusting groove, and a guide column is fixedly connected in the inner cavity of the front of the adjusting groove.

[0012] Preferably, the first adjusting block is movably connected in the inner cavity of the movable groove, the left sides of the front and back of the first adjusting block are symmetrically fixedly connected with second adjusting blocks, the second adjusting blocks are movably connected in the inner cavity of the adjusting groove, the front of the second adjusting block is sleeved on the outer wall of the guide column, and the back of the second adjusting block is threadedly connected on the outer wall of the screw rod.

[0013] Preferably, the left side of the drain pipe communicates with the inner cavity of the blast aeration tank, the outer wall of the drain pipe is flange-connected with a second water pump, the right side of the drain pipe is fixedly connected with a corrugated pipe, and the bottom of the corrugated pipe is fixedly connected on the right side of the top of the electrolytic cell.

[0014] Preferably, the left side of the bottom of the blast aeration tank is fixedly connected with a control cabinet, the bottom of the front of the electrolytic cell is fixedly connected with a water outlet pipe, and the outer wall of the water outlet pipe is flange-connected with a valve in the middle.

[0015] Preferably, the ultrasonic vibration rod has two, the two ultrasonic vibration rods are symmetrically fixed on the left and right sides of the inner cavity of the electrolytic cell, the middle of the electrode assembly is fixedly connected with a conductive column, the front of the conductive column is fixedly connected with an anode, and the back of the conductive column is fixedly connected with a cathode.

[0016] A removal method of a device for removing urea in wastewater, the removal method comprising the following steps:

[0017] S1: the wastewater is poured into the inner cavity of the feeding assembly through the feeding pipe, the impurities contained in the wastewater are removed by the filter screen after the wastewater passes through the filter screen, the alkali metal sulfide compound is injected into the inner cavity of the feeding assembly through the liquid injection pipe, the servo motor is started, the main gear is driven to rotate, the main gear is meshed with the two side gears at this time, so as to drive the two stirring rollers to rotate, at this time, the wastewater and the alkali metal sulfide compound can be stirred and treated, and the wastewater is treated by sedimentation after uniform stirring;

[0018] S2: after the sedimentation is completed, the clarified liquid attached to the inner cavity of the feeding assembly is input into the inner cavity of the air blowing and aeration tank through the water conveying pipe, the air blowing and aeration pipe is started, and the clarified liquid is treated by air blowing and aeration, and the clarified liquid is treated by sedimentation again after the treatment is completed;

[0019] S3: after the sedimentation is completed, the position of the clarified liquid is observed through the transparent window, the handle is rotated, the lead screw is driven to rotate, the second adjusting block at the back can be threadedly connected with the lead screw, the first adjusting block at the back can be driven to move up and down in the inner cavity of the movable groove, and the drain pipe is moved to a suitable position, when the first adjusting block moves, the waterproof corrugated hose at the top and the bottom is correspondingly contracted and stretched, after the clarified liquid is moved to the position, the water pump is started, and the clarified liquid is input into the inner cavity of the electrolytic cell through the corrugated pipe;

[0020] S4: the ultraviolet irradiation lamp and the ultrasonic vibration rod are started, the clarified liquid is irradiated by the ultraviolet lamp while being stirred, so that the irradiation is uniform, after the irradiation is completed, the electrode assembly is started, the clarified liquid is treated by electrolysis through the anode and the cathode, and the clean water is discharged after the electrolysis is completed.

[0021] Advantages

[0022] Compared with the prior art, the device and method for removing urea in wastewater provided by the application have the following advantages:

[0023] 1、The device and method for removing urea in wastewater, by setting the feeding assembly, can pretreat the wastewater, so that it can react with the alkali metal sulfide compound, by starting the servo motor, the main gear can drive the two side gears to rotate, so that the stirring roller can be driven to rotate, and when the wastewater and the alkali metal sulfide compound react, they can be mixed uniformly, so that the reaction efficiency can be effectively improved.

[0024] 2、The device and method for removing urea in wastewater, by setting the air blowing aeration tank, the treated supernatant can be air blowing aeration treatment through the air blowing aeration pipe, and the supernatant can be further precipitated, by setting the transparent window, the supernatant after precipitation in the air blowing aeration tank cavity can be observed, so as to facilitate the extraction of supernatant, by rotating the handle, the screw rod can be driven to rotate, so that the second adjusting block on the back can be screwed with the screw rod, at this time, the first adjusting block can be moved up and down to move the drain pipe, until the drain pipe is moved to the appropriate position to extract the supernatant, by setting the waterproof corrugated hose, the movable tank can be shielded at any time, so that the leakage of supernatant can be prevented.

[0025] 3、The device and method for removing urea in wastewater, by setting the electrolytic cell, the supernatant can be electrolyzed to remove urea in the supernatant to the greatest extent, by starting the electrode assembly, the electrolysis can be carried out through the conductive column, anode and cathode, by starting the ultraviolet irradiation lamp and ultrasonic vibration rod, the supernatant can be irradiated by ultraviolet rays while being stirred, so that the irradiation efficiency of the supernatant can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is the structure diagram of the positive side of the application;

[0027] Figure 2 is the structure diagram of the blanking assembly of the application;

[0028] Figure 3 is the structure diagram of the air blowing aeration tank cavity of the application;

[0029] Figure 4 is the structure diagram of the air blowing aeration tank cavity of the application; Figure 3 is the enlarged view of A in the application;

[0030] Figure 5 is the structure diagram of the electrolytic cell cavity of the application.

[0031] In the figure: 1, blanking assembly; 2, feed pipe; 3, filter screen; 4, stirring roller; 5, liquid injection pipe; 6, driving structure; 7, servo motor; 8, main gear; 9, auxiliary gear; 10, air blowing aeration tank; 11, transparent window; 12, control cabinet; 13, waterproof corrugated hose; 14, water delivery pipe; 15, handle; 16, movable tank; 17, adjusting groove; 18, screw rod; 19, first adjusting block; 20, drain pipe; 21, water pump; 22, second adjusting block; 23, guide column; 24, air blowing aeration pipe; 25, corrugated pipe; 26, electrolytic cell; 27, ultraviolet irradiation lamp; 28, ultrasonic vibration rod; 29, electrode assembly; 30, conductive column; 31, anode. DETAILED DESCRIPTION

[0032] The technical means, creative features, purposes and effects of the present application are easy to understand by combining the specific embodiments below.

[0033] As shown in Figures 1-2 A device for removing urea in wastewater, comprising a feeding assembly 1, a feeding pipe 2 is fixedly connected to the top of the feeding assembly 1, stirring rollers 4 are symmetrically and rotatably connected to the left and right sides of the inner cavity of the feeding assembly 1, a driving structure 6 is fixedly connected to the back of the feeding assembly 1, a filter screen 3 is fixedly connected to the bottom of the inner cavity of the feeding pipe 2, a servo motor 7 is fixedly connected to the front of the back of the driving structure 6, a main gear 8 is fixedly connected to the front of the servo motor 7 through a first rotating shaft, a pair of pinion gears 9 are symmetrically and meshingly connected to the left and right sides of the main gear 8, the front of the pair of pinion gears 9 are symmetrically and fixedly connected to the back of the two stirring rollers 4, the main gear 8 and the pinion gears 9 are rotatably connected in the inner cavity of the driving structure 6, a liquid injection pipe 5 is fixedly connected to the top of the front of the feeding assembly 1, a water conveying pipe 14 is fixedly connected to the right side of the feeding assembly 1, and a first water pump is flange-connected to the outer wall of the water conveying pipe 14.

[0034] The feeding assembly 1 can be used for pretreating the wastewater, so that it can react with alkali metal sulfide compounds, the servo motor 7 can be started to drive the pinion gears 9 on both sides to rotate through the main gear 8, so as to drive the stirring rollers 4 to rotate, and the wastewater and the alkali metal sulfide compounds can be uniformly mixed during the reaction, so as to effectively improve the reaction efficiency.

[0035] As shown in Figure 1 , 3The application discloses a wastewater urea removal device, and belongs to the field of wastewater treatment. The device is characterized by comprising a feeding assembly 1, a blast aerator 10 fixedly connected to the bottom of the feeding assembly 1, a movable groove 16 formed in the right middle of the blast aerator 10, waterproof corrugated hoses 13 fixedly connected to the right sides of the top and bottom of the inner cavity of the movable groove 16 in a symmetrical mode, first adjusting blocks 19 fixedly connected to the opposite sides of the two waterproof corrugated hoses 13, a drain pipe 20 fixedly connected to the middle of the first adjusting blocks 19, a transparent window 11 fixedly connected to the front middle of the blast aerator 10, adjusting grooves 17 symmetrically formed in the front and back of the inner cavity of the movable groove 16, a screw rod 18 rotatably connected to the inner cavity of the back adjusting groove 17, a guide column 23 fixedly connected to the inner cavity of the front adjusting groove 17, a blast aerator pipe 24 fixedly connected to the bottom of the inner cavity of the blast aerator 10, the first adjusting blocks 19 movably connected to the inner cavity of the movable groove 16, second adjusting blocks 22 fixedly connected to the left sides of the front and back of the first adjusting blocks 19 in a symmetrical mode, the second adjusting blocks 22 movably connected to the inner cavities of the adjusting grooves 17, the front second adjusting blocks 22 sleeved on the outer wall of the guide column 23, the back second adjusting blocks 22 threadedly connected to the outer wall of the screw rod 18, the left side of the drain pipe 20 communicated with the inner cavity of the blast aerator 10, a second water pump flange-connected to the outer wall of the drain pipe 20, a corrugated pipe 25 fixedly connected to the right side of the top of an electrolytic cell 26, and the bottom of the corrugated pipe 25.

[0036] The blast aerator 10 is arranged, the blast aerator pipe 24 can be used for blast aeration treatment of the treated clarified liquid, the clarified liquid can be further precipitated, the transparent window 11 is arranged, the clarified liquid in the inner cavity of the blast aerator 10 after precipitation can be observed, so that the clarified liquid can be extracted conveniently, the handle 15 is rotated, the screw rod 18 is driven to rotate, the back second adjusting blocks 22 can be threadedly connected to the screw rod 18, at this moment, the first adjusting blocks 19 can be used for moving the drain pipe 20 up and down, until the drain pipe 20 is moved to a suitable position to extract the clarified liquid, the waterproof corrugated hoses 13 are arranged, the movable groove 16 can be shielded at any time, so that the clarified liquid can be prevented from leaking out.

[0037] As shown in Figure 1 , 5As shown, a device for removing urea from wastewater includes an electrolytic cell 26 fixedly connected to the right side of the bottom of an aeration tank 10; an ultraviolet lamp 27 fixedly connected to the top of the inner cavity of the electrolytic cell 26; an ultrasonic vibrating rod 28 fixedly connected to the center of the inner cavity of the electrolytic cell 26; an electrode assembly 29 fixedly connected to the bottom of the inner cavity of the electrolytic cell 26; a control cabinet 12 fixedly connected to the left side of the bottom of the aeration tank 10; an outlet pipe fixedly connected to the bottom of the front of the electrolytic cell 26; a valve connected to the flange in the center of the outer wall of the outlet pipe; two ultrasonic vibrating rods 28 symmetrically fixedly connected to the left and right sides of the inner cavity of the electrolytic cell 26; a conductive column 30 fixedly connected to the center of the electrode assembly 29; an anode 31 fixedly connected to the front of the conductive column 30; and a cathode fixedly connected to the back of the conductive column 30.

[0038] The electrolytic cell 26 can be used to electrolyze the clarified liquid to remove urea from it to the greatest extent. By activating the electrode assembly 29, electrolysis can be carried out through the conductive column 30, anode 31 and cathode. By activating the ultraviolet irradiation lamp 27 and ultrasonic vibrating rod 28, the clarified liquid can be stirred while being irradiated with ultraviolet light, thereby improving the irradiation efficiency of the clarified liquid.

[0039] like Figures 1-5 As shown, a method for removing urea from wastewater using a device includes the following removal methods:

[0040] S1: Wastewater is poured into the inner cavity of the feeding assembly 1 through the feed pipe 2. After the wastewater passes through the filter screen 3, the filter screen 3 will remove the impurities contained in the wastewater. The alkali metal sulfur compound is injected into the inner cavity of the feeding assembly 1 through the injection pipe 5. The servo motor 7 is started, which drives the main gear 8 to rotate. The main gear 8 will mesh with the auxiliary gears 9 on both sides, thereby driving the two stirring rollers 4 to rotate. At this time, the wastewater and alkali metal sulfur compound can be stirred and treated. After being stirred evenly, the wastewater is subjected to sedimentation treatment.

[0041] S2: After sedimentation, the clarified liquid attached to the inner cavity of the feeding component 1 is fed into the inner cavity of the aeration tank 10 through the water supply pipe 14. The aeration pipe 24 is started to aerate the clarified liquid. After the aeration is completed, it is sedimented again.

[0042] S3: After the precipitation is completed, the position of the clarified liquid is observed through the transparent window 11, the handle 15 is rotated to drive the screw rod 18 to rotate, so that the second adjusting block 22 at the back can be threadedly connected with the screw rod 18, so that the second adjusting block 22 at the back can drive the first adjusting block 19 to move up and down in the inner cavity of the movable groove 16, until the drain pipe 20 is moved to the appropriate position, when the first adjusting block 19 moves, the waterproof corrugated hose 13 at the top and the bottom is correspondingly contracted and stretched, after the clarified liquid is moved to the position, the water pump 21 is started, and the clarified liquid is input into the inner cavity of the electrolytic cell 26 through the corrugated pipe 25.

[0043] S4: The ultraviolet irradiation lamp 27 and the ultrasonic vibration rod 28 are started, the clarified liquid is irradiated by the ultraviolet lamp and stirred at the same time, so that the irradiation is uniform, after the irradiation is completed, the electrode assembly 29 is started, the clarified liquid is electrolyzed by the anode 31 and the cathode, and the clean water is discharged after the electrolysis is completed.

[0044] The basic principle and main features of the present application and the advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above-mentioned embodiments, the above-mentioned embodiments and the description in the specification are only to illustrate the principle of the present application, various changes and improvements can be made to the present application without departing from the spirit and scope of the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A device for removing urea from wastewater, comprising a discharging assembly (1), characterized in that: The central part of the top of the blanking assembly (1) is fixedly connected with a feeding pipe (2), the left and right sides of the inner cavity of the blanking assembly (1) are symmetrically rotatably connected with stirring rollers (4), and the back of the blanking assembly (1) is fixedly connected with a driving structure (6); The bottom of the blanking assembly (1) is fixedly connected with a blast aerator (10), the central part of the right side of the blast aerator (10) is provided with a movable groove (16), the right sides of the top and bottom of the inner cavity of the movable groove (16) are fixedly connected with waterproof corrugated hoses (13), the opposite sides of the two waterproof corrugated hoses (13) are fixedly connected with first adjusting blocks (19), and the central part of the first adjusting block (19) is fixedly connected with a drain pipe (20); The right side of the bottom of the blast aerator (10) is fixedly connected with an electrolytic cell (26), the top of the inner cavity of the electrolytic cell (26) is fixedly connected with an ultraviolet irradiation lamp (27), the central part of the inner cavity of the electrolytic cell (26) is fixedly connected with an ultrasonic vibration rod (28), and the bottom of the inner cavity of the electrolytic cell (26) is fixedly connected with an electrode assembly (29); the bottom of the inner cavity of the feeding pipe (2) is fixedly connected with a filter screen (3), the central part of the back of the driving structure (6) is fixedly connected with a servo motor (7), the front of the servo motor (7) is fixedly connected with a main gear (8) through a first rotating shaft, the left and right sides of the main gear (8) are symmetrically meshed with auxiliary gears (9), the front surfaces of the two auxiliary gears (9) are fixedly connected to the backs of the two stirring rollers (4) in a symmetrical manner, and the main gear (8) and the auxiliary gears (9) are rotatably connected in the inner cavities of the driving structure (6); the top of the front of the blanking assembly (1) is fixedly connected with a liquid injection pipe (5), the right side of the blanking assembly (1) is fixedly connected with a water delivery pipe (14), and the outer wall flange of the water delivery pipe (14) is connected with a first water pump; the central part of the front of the blast aerator (10) is fixedly connected with a transparent window (11), the central parts of the front and back of the inner cavity of the movable groove (16) are symmetrically provided with adjusting grooves (17), the inner cavity of the back adjusting groove (17) is rotatably connected with a lead screw (18), and the inner cavity of the front adjusting groove (17) is fixedly connected with a guide column (23); the bottom of the inner cavity of the blast aerator (10) is fixedly connected with a blast aerator pipe (24); the first adjusting block (19) is movably connected in the inner cavity of the movable groove (16), the left sides of the front and back of the first adjusting block (19) are fixedly connected with second adjusting blocks (22) in a symmetrical manner, the second adjusting blocks (22) are movably connected in the inner cavities of the adjusting grooves (17), the front second adjusting blocks (22) are sleeved on the outer wall of the guide column (23), and the back second adjusting blocks (22) are threadedly connected to the outer wall of the lead screw (18).

2. The device for removing urea from wastewater according to claim 1, characterized in that: The left side of the drain pipe (20) is communicated with the inner cavity of the air blowing aeration tank (10), the outer wall flange of the drain pipe (20) is connected with the second water pump, the right side of the drain pipe (20) is fixedly connected with the corrugated pipe (25), and the bottom of the corrugated pipe (25) is fixedly connected to the right side of the top of the electrolytic cell (26).

3. The device for removing urea from wastewater according to claim 1, characterized in that: The left side of the bottom of the air blowing aeration tank (10) is fixedly connected with the control cabinet (12), the bottom of the front of the electrolytic cell (26) is fixedly connected with the water outlet pipe, and the central flange of the outer wall of the water outlet pipe is connected with the valve.

4. The device for removing urea from wastewater according to claim 1, characterized in that: The ultrasonic vibration rod (28) has two, two ultrasonic vibration rods (28) are symmetrically fixedly connected to the left and right sides of the inner cavity of the electrolytic cell (26), the central of the electrode assembly (29) is fixedly connected with the conductive column (30), the front of the conductive column (30) is fixedly connected with the anode (31), and the back of the conductive column (30) is fixedly connected with the cathode.

5. The method of claim 1, wherein the device is characterized in that: The removal method comprises the following steps: S1: the wastewater is poured into the inner cavity of the feeding assembly (1) through the feeding pipe (2), the impurities contained in the wastewater are removed after the wastewater passes through the filter screen (3), the alkali metal sulfide compound is injected into the inner cavity of the feeding assembly (1) through the liquid injection pipe (5), the servo motor (7) is started, the main gear (8) is driven to rotate, the main gear (8) is engaged with the two side gears (9) at this time, so as to drive the two stirring rollers (4) to rotate, at this time, the wastewater and the alkali metal sulfide compound can be stirred and treated, and the wastewater is treated after being stirred uniformly; S2: after the sedimentation is completed, the clarified liquid attached to the inner cavity of the feeding assembly (1) is input into the inner cavity of the air blowing aeration tank (10) through the water delivery pipe (14), the air blowing aeration pipe (24) is started, and the clarified liquid is treated by air blowing aeration, and the clarified liquid is treated again after the treatment is completed; S3: after the sedimentation is completed, the position of the clarified liquid is observed through the transparent window (11), the handle (15) is rotated, the lead screw (18) is driven to rotate, the second adjusting block (22) at the back can be threadedly connected with the lead screw (18), the first adjusting block (19) at the back can be driven to move up and down in the inner cavity of the movable groove (16), until the drain pipe (20) is moved to the appropriate position, when the first adjusting block (19) moves, the waterproof corrugated hose (13) at the top and the bottom is correspondingly contracted and stretched, after the clarified liquid is moved to the position, the water pump (21) is started, and the clarified liquid is input into the inner cavity of the electrolytic cell (26) through the corrugated pipe (25); S4: the ultraviolet irradiation lamp (27) and the ultrasonic vibration rod (28) are started, the clarified liquid is irradiated by the ultraviolet lamp while being stirred, so that the irradiation is uniform, after the irradiation is completed, the electrode assembly (29) is started, the clarified liquid is treated by electrolysis through the anode (31) and the cathode, and the clear water is discharged after the electrolysis is completed.

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