Sodium polyaspartate phosphorus-containing wastewater treatment device

Abstract

The utility model discloses a sodium polyaspartate phosphorus-containing wastewater treatment device, and relates to the technical field of sodium polyaspartate production equipment.The sodium polyaspartate phosphorus-containing wastewater treatment device comprises a treatment barrel, and the top of the treatment barrel is communicated with a feeding pipe; the bottom plate is arranged in the treatment barrel, a discharging hole is formed in the middle of the bottom plate, and a sealing valve is rotationally connected to the discharging hole; the section of the drainage plate is inverted-V-shaped, the drainage plate is mounted on the inner wall of the treatment cylinder and located below the bottom plate, a top fold line is parallel to a rotating shaft of the sealing valve, and filter strip holes are formed in the bottoms of the two sides of the drainage plate; the filter screen frames are mounted on the inner wall of the treatment barrel, only the tops of the filter screen frames are open, and the filter screen frames are arranged below the filter strip holes; the discharge port is communicated with the bottom of the treatment cylinder and is provided with a valve; the discharging door is mounted at the top of the treatment barrel; the stirring paddle is mounted at the top of the treatment barrel, is positioned above the bottom plate and is driven to rotate by a motor mounted at the top of the treatment barrel. The method has the effect of improving the treatment efficiency of the phosphorus-containing wastewater generated during the production of the sodium polyaspartate.

Description

Technical Field

[0001] The present application relates to the technical field of sodium polyaspartate production equipment, and in particular to a sodium polyaspartate phosphorus-containing wastewater treatment device. Background Art

[0002] Polyaspartic acid is an amino acid polymer. Polyaspartic acid and its by-products are widely used in water treatment, medicine, agriculture, daily chemicals and other fields.

[0003] Sodium polyaspartate is produced by hydrolyzing polysuccinimide, an intermediate product obtained by polymerization of L-aspartic acid and phosphoric acid as a catalyst, with the addition of sodium hydroxide. The production process generates wastewater containing phosphorus, which cannot be discharged directly. Therefore, effective treatment of the phosphorus-containing wastewater generated during the production of sodium polyaspartate is necessary. Utility Model Content

[0004] The purpose of the utility model proposed in this application is to treat the phosphorus-containing wastewater generated in the production process of sodium polyaspartate. This application provides a sodium polyaspartate phosphorus-containing wastewater treatment device.

[0005] The present application provides a sodium polyaspartate phosphorus wastewater treatment device that adopts the following technical solution:

[0006] A sodium polyaspartate phosphorus wastewater treatment device, comprising

[0007] The top of the treatment cylinder is connected to a feed pipe, which is connected to the bottom of the reactor;

[0008] The bottom plate is arranged in the processing cylinder, dividing the processing cylinder into two spaces, an upper space and an lower space, a discharge hole is opened in the middle, a closing valve is rotatably connected to the discharge hole, and the rotating shaft of the closing valve extends from the processing cylinder and is installed with a handwheel;

[0009] The guide plate has an inverted V-shaped cross section and is installed on the inner wall of the treatment cylinder and is located below the bottom plate. The top fold line is parallel to the rotation axis of the closed valve, and filter strip holes are opened at the bottom of both sides.

[0010] The filter screen frame is installed on the inner wall of the treatment cylinder, with only the top opening set, and one is set below the filter bar hole;

[0011] The discharge port is connected to the bottom of the treatment cylinder and is equipped with a valve;

[0012] The discharge door is installed on the top of the processing cylinder;

[0013] The stirring paddle is installed on the top of the treatment cylinder, located above the bottom plate, and is driven to rotate by the motor installed on the top of the treatment cylinder.

[0014] Optionally, the inner wall of the treatment cylinder is provided with sliding ring plates at the top and bottom of the filter frame, and the frames at the top and bottom of the filter frame abut and slide against the corresponding sliding ring plates;

[0015] There are four filter screen frames in the treatment cylinder, which are in contact with each other and are equidistantly distributed around the central axis of the treatment cylinder.

[0016] The outer wall of the processing cylinder is provided with a taking-out hole for taking out the filter screen frame, and the taking-out hole is rotatably connected with a taking-out door.

[0017] Optionally, the upper surface of the sliding ring plate located at the top of the filter frame is an inclined surface that slopes downward from the outside to the inside.

[0018] Optionally, a drainage hole is provided at the bottom of the sliding ring plate located at the bottom of the filter frame.

[0019] Optionally, when the filter screen frame moves to a position where it can be taken out from the taking-out hole, two adjacent filter screen frames are located just below the filter rod hole.

[0020] In summary, this application includes at least one of the following beneficial technical effects:

[0021] The phosphorus-containing wastewater in the reactor is discharged into the treatment cylinder and then sealed in the space on the bottom plate. Lime and other substances are added to the phosphorus-containing wastewater through the discharge door for reaction, and the wastewater is stirred by the stirring paddle to produce sediment. Then the closed valve is opened to allow the wastewater with sediment to fall onto the drainage plate and be diverted to both sides. The wastewater enters the filter frame through the holes in the filter bars, and the sediment therein is intercepted, so that the wastewater without sediment can be processed in the next step, thereby improving the efficiency of the preliminary treatment of the phosphorus-containing wastewater. The setting of the filter frame can improve the efficiency of filtering the sediment in the wastewater by adjusting the height of the filter frame.

[0022] When the filter frame needs to be replaced, open the removal door, rotate the filter frame, move the filter frame containing sediment to the removal hole and take it out for cleaning, and then move the clean filter frame to the bottom of the filter bar hole for the next wave of filtration, which improves the efficiency of filter frame cleaning;

[0023] The inclined setting of the upper surface of the sliding ring plate can effectively reduce the accumulation of wastewater on the upper surface, and the drainage hole setting of the sliding ring plate can effectively reduce the accumulation of wastewater in the sliding ring plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural diagram of an embodiment of the present application;

[0025] Figure 2 is a partial cross-sectional view showing a filter assembly;

[0026] Figure 3 It is a partial cross-sectional view showing the drain hole.

[0027] In the figure, 1. treatment cylinder; 11. feed pipe; 12. discharge port; 13. removal hole; 131. removal door; 14. discharge door; 15. stirring paddle; 2. bottom plate; 21. discharge hole; 22. closing valve; 3. drainage plate; 31. filter bar hole; 4. filter assembly; 41. filter screen frame; 42. sliding ring plate; 421. drainage hole. DETAILED DESCRIPTION

[0028] The following is combined with Figure 1-3 This application is described in further detail.

[0029] The embodiments of the present application disclose a device for treating phosphorus-containing wastewater from sodium polyaspartate.

[0030] refer to Figure 1 and Figure 2 The sodium polyaspartate phosphorus-containing wastewater treatment device includes a treatment barrel 1, a bottom plate 2 and a drainage plate 3. A feed pipe 11 is connected to the top of the treatment barrel 1, and the feed pipe 11 is connected to the bottom end of the reactor. The bottom plate 2 is arranged in the treatment barrel 1, dividing the treatment barrel 1 into two upper and lower spaces. The middle part is tilted downward and is provided with a discharge hole 21. The discharge hole 21 is a bar hole. A closing valve 22 capable of closing the discharge hole 21 is rotatably connected to the discharge hole 21. The rotating shaft of the closing valve 22 extends from the treatment barrel 1 and is equipped with a handwheel. The drainage plate 3 has an "inverted V" cross-section and is installed on the inner wall of the treatment barrel 1. Together with the bottom plate 2, it divides the treatment barrel 1 into three spaces and is located below the bottom plate 2. The top fold line of the drainage plate 3 is parallel to the rotating shaft of the closing valve 22, and filter bar holes 31 are provided at the bottom of both sides. The bottom of the treatment barrel 1 is connected to a discharge port 12 with a valve. A discharge door 14 is installed at the bottom of the treatment drum 1, and a stirring paddle 15 is installed at the top of the treatment drum 1. The stirring paddle 15 is located above the bottom plate 2 and is driven by a motor installed at the top of the treatment drum 1. A filter assembly 4 is installed on the inner wall of the treatment drum 1 below the filter bar hole 31 to filter the sediment in the wastewater.

[0031] Phosphorus-containing wastewater from sodium polyaspartate production in the reactor enters treatment drum 1 through feed pipe 11. Lime and other substances are then added to treatment drum 1 through the loading port. The wastewater is then agitated by the rotation of agitator paddle 15, accelerating the formation of precipitates. Finally, closed valve 22 is opened, allowing wastewater on bottom plate 2 to enter drain plate 3 and flow to both sides. Wastewater containing precipitates flows out through filter bar holes 31 and is filtered by filter assembly 4. The remaining wastewater enters the bottom of treatment drum 1 and proceeds to the next step, where the phosphorus-containing substances react to form precipitates.

[0032] refer to Figure 2 and Figure 3The filter assembly 4 includes a filter screen frame 41 and a sliding ring plate 42. There are four filter screen frames 41, which are installed on the inner wall of the treatment cylinder 1, and only the top is opened. The four filter screen frames 41 are in contact with each other and are equidistantly distributed around the central axis of the treatment cylinder 1. The filter screen frame 41 is located below the diverter plate, and there are two sliding ring plates 42, which are installed on the inner wall of the treatment cylinder 1 and are located above and below the filter screen frame 41. The cross-section of the sliding ring plate 42 is "L"-shaped, and the top and bottom frames of the filter screen frame 41 slide in contact with the corresponding sliding ring plates 42.

[0033] The outer wall of the treatment drum 1 is provided with an access hole 13 for removing the filter screen frame 41. The access hole 13 is rotatably connected to a removal door 131. When the filter screen frame 41 is moved to a position where it can be removed from the access hole 13, two adjacent filter screen frames 41 are positioned directly below the filter rod holes 31. The upper surface of the sliding ring plate 42 at the top of the filter screen frame 41 is inclined downward from the outside to the inside. A drainage hole 421 is provided at the bottom of the sliding ring plate 42 at the bottom of the filter screen frame 41.

[0034] The wastewater flowing out of the filter bar hole 31 enters the filter screen frame 41, and the precipitated impurities therein are filtered through the filter screen frame 41. The three-dimensional setting of the filter screen frame 41 can effectively improve the filtration efficiency of the wastewater and reduce the probability of the filter screen being blocked by precipitation. When the filter screen frame 41 needs to be replaced and cleaned, open the removal door 131, rotate the filter screen frame 41, and move the filter screen frame 41 to be removed to the removal outlet, and remove it from the removal outlet for replacement and cleaning. The efficiency of replacing and cleaning the filter screen frame 41 is improved. The setting of the inclined surface at the top of the sliding ring plate 42 can reduce the accumulation of wastewater on the upper surface of the sliding ring plate 42, and the setting of the drainage hole 421 can effectively reduce the accumulation of wastewater in the sliding ring plate 42.

[0035] The implementation principle of a sodium polyaspartate phosphorus-containing wastewater treatment device according to an embodiment of the present application is as follows: the phosphorus-containing wastewater generated by the production of sodium polyaspartate enters the treatment barrel 1 through the feed pipe 11, lime and other substances are added to the treatment barrel 1 through the loading door, and the liquid in the treatment barrel 1 is stirred to accelerate the reaction, so that the phosphorus-containing substances react to form a precipitate. Subsequently, the closed valve 22 is opened to allow the wastewater containing the precipitate to flow to both sides through the guide plate 3, and enter the filter screen frame 41 below through the filter bar holes 31 to filter the precipitated substances in the wastewater. The setting of the filter screen frame 41 can effectively reduce the probability of the filter screen being blocked and improve the efficiency of filtering the wastewater. At the same time, when the filter screen frame 41 needs to be replaced, the filter screen frame 41 that needs to be replaced can be opened and rotated to the removal door 131 to be taken out and replaced, which facilitates the cleaning and filtering of the filter screen frame 41. After the filter screen frame 41 that needs to be replaced is taken out, the clean filter screen frame 41 is located just below the filter bar hole 31, thereby improving the efficiency of treating phosphorus-containing wastewater generated by the production of sodium polyaspartate.

[0036] The embodiments of this specific implementation method are all preferred embodiments of the present application and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A sodium polyaspartate phosphorus wastewater treatment device, characterized by: include The top of the treatment cylinder (1) is connected to a feed pipe (11), and the feed pipe (11) is connected to the bottom of the reactor; The bottom plate (2) is arranged in the processing cylinder (1) and divides the processing cylinder (1) into two upper and lower spaces. A discharge hole (21) is opened in the middle. A closing valve (22) is rotatably connected to the discharge hole (21). The rotating shaft of the closing valve (22) extends from the processing cylinder (1) and is installed with a hand wheel. The guide plate (3) has an inverted V-shaped cross section and is mounted on the inner wall of the treatment cylinder (1) and is located below the bottom plate (2). The top fold line is parallel to the rotation axis of the closing valve (22), and filter strip holes (31) are provided at the bottom of both sides. A filter screen frame (41) is mounted on the inner wall of the treatment cylinder (1) and is only provided with an opening at the top, with one being provided below each of the filter strip holes (31); A discharge port (12) is connected to the bottom of the treatment cylinder (1) and is provided with a valve; A discharge door (14) is installed on the top of the processing cylinder (1); The stirring paddle (15) is installed on the top of the treatment cylinder (1) and is located above the bottom plate (2). It is driven to rotate by a motor installed on the top of the treatment cylinder (1).

2. A sodium polyaspartate phosphorus-containing wastewater treatment device according to claim 1, characterized in that: The inner wall of the treatment cylinder (1) is provided with sliding ring plates (42) at the top and bottom of the filter screen frame (41), and the frames at the top and bottom of the filter screen frame (41) are in contact and slidable contact with the corresponding sliding ring plates (42); There are four filter screen frames (41) in the treatment cylinder (1), and the four filter screen frames (41) are in contact with each other and are equidistantly distributed around the central axis of the treatment cylinder (1). The outer wall of the treatment cylinder (1) is provided with a take-out hole (13) for taking out the filter screen frame (41), and the take-out hole (13) is rotatably connected to a take-out door (131).

3. A sodium polyaspartate phosphorus-containing wastewater treatment device according to claim 2, characterized in that: The upper surface of the sliding ring plate (42) located at the top of the filter screen frame (41) is an inclined surface that slopes downward from the outside to the inside.

4. A sodium polyaspartate phosphorus-containing wastewater treatment device according to claim 2, characterized in that: A drainage hole (421) is provided at the bottom of the sliding ring plate (42) located at the bottom of the filter screen frame (41).

5. A sodium polyaspartate phosphorus-containing wastewater treatment device according to claim 2, characterized in that: When the filter screen frame (41) moves to a position where it can be taken out from the taking-out hole (13), two adjacent filter screen frames (41) are located just below the filter rod hole (31).

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