Wastewater treatment device in chloroacetone production process

Abstract

The utility model discloses a wastewater treatment device in a chloroacetone production process, which belongs to the field of sewage treatment and comprises a treatment box, and a primary treatment tank, a medicament mixing tank, a magnetic powder mixing tank, a flocculant mixing tank and a sedimentation tank are sequentially formed in the treatment box along the length direction of the treatment box. A chemical adding mechanism is arranged at the top of the chemical mixing tank and the top of the flocculant mixing tank, a magnetic powder adding mechanism capable of uniformly adding magnetic powder is arranged at the top of the magnetic powder mixing tank, the magnetic powder adding mechanism comprises a feeding hopper, and a discharging pipe extending into the magnetic powder mixing tank is arranged at the bottom of the feeding hopper; and the feeding hopper reciprocates at the top of the magnetic powder mixing pool through the driving assembly. According to the wastewater treatment device in the chloroacetone production process, the magnetic powder mixing tank is additionally arranged, so that the overall specific gravity of flocs is effectively increased, the sedimentation rate of the flocs is increased, and the treatment capacity of the clarification tank is further improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to wastewater treatment technical field especially relates to a wastewater treatment device in the production process of chloroacetone. BACKGROUND

[0002] The wastewater in the production process of chloroacetone is a complex processing object, mainly from chlorination reaction, distillation process and other production processes wastewater, which contains a variety of organic and inorganic, may cause serious impact on the environment and ecological system. After the recovery of chloroacetone, the wastewater still contains about 1-2% of other organic matter, and the existence of the organic matter not only has high COD, but also interferes with the detection of ammonia nitrogen and total nitrogen. Due to the existence of the interference, several hundred or even several thousand ppm of ammonia nitrogen can be detected in the water without nitrogen element, which has certain interference to the biochemical treatment of wastewater. Therefore, the wastewater in the production process of chloroacetone is treated by the wastewater treatment device.

[0003] When the wastewater treatment device is used to treat the wastewater in the production process of chloroacetone, the flocculant can make the organic colloid and fine suspended solids in the wastewater coagulate through charge neutralization, so as to facilitate subsequent separation and treatment. The flocculation body formed by the traditional wastewater treatment device only relies on the flocculant, which is small and not dense enough. When treating the chloroacetone wastewater, the organic pollutants and some suspended impurities in the wastewater are difficult to effectively aggregate and settle, and some particles in the wastewater may be suspended in the water, resulting in poor subsequent sedimentation separation effect. UTILITY MODEL CONTENT

[0004] The utility model aims at: in order to solve the problem that the flocculation body formed by the flocculant is small and not dense enough when the existing wastewater treatment device coagulates suspended solids by flocculant, and the organic pollutants and some suspended impurities in the wastewater are difficult to effectively aggregate and settle, and put forward a wastewater treatment device in the production process of chloroacetone.

[0005] In order to achieve the above purpose, the utility model adopts the following technology: a wastewater treatment device in the production process of chloroacetone, including the processing box, the inside of the processing box is sequentially formed with primary treatment pool, reagent mixing pool, magnetic powder mixing pool, flocculant mixing pool and sedimentation tank along its length direction, the top of reagent mixing pool and flocculant mixing pool is provided with dosing mechanism, and the top of magnetic powder mixing pool is provided with magnetic powder adding mechanism that can add magnetic powder uniformly.

[0006] As a further description of the above technical scheme: the magnetic powder adding mechanism includes a feed hopper, the bottom of the feed hopper is provided with a discharge pipe extending into the inside of the magnetic powder mixing pool, and the feed hopper reciprocates on the top of the magnetic powder mixing pool through the driving assembly.

[0007] As a further description of the above technical solution: the driving assembly comprises a support fixed on the treatment box, a motorized lead screw is arranged on the top of the support, and a connecting frame connected with the feeding hopper is arranged on the output end of the motorized lead screw.

[0008] As a further description of the above technical solution: a guide assembly for moving and guiding the feeding hopper is arranged on the feeding hopper.

[0009] The guide assembly comprises a guide rod arranged between the supports, and a sliding seat connected with the feeding hopper is slidably connected to the guide rod.

[0010] As a further description of the above technical solution: the magnetic powder adding mechanism further comprises a stirring assembly.

[0011] The stirring assembly comprises a fixing frame arranged on both sides of the feeding hopper, a connecting shaft is arranged on the fixing frame through a connecting sleeve, and stirring blades are arranged on the bottom of the connecting shaft.

[0012] As a further description of the above technical solution: a threaded end head penetrating through the fixing frame is arranged on the top of the connecting shaft, and a locking nut abutting against the fixing frame is arranged on the threaded end head.

[0013] As a further description of the above technical solution: the dosing mechanism comprises a medicine box arranged on the top of the magnetic powder mixing pool and the flocculating agent mixing pool, an adding port is arranged on the top of the medicine box, and a medicine pump is arranged on the medicine box.

[0014] As described above, due to the adoption of the above technical solution, the beneficial effects of the present application are:

[0015] By increasing the magnetic powder mixing pool, when the magnetic powder and the flocculating agent act together, the magnetic powder can act as a flocculation nucleus, so that the flocculating agent can adsorb more impurity particles on its surface to form larger flocs. These flocs are more compact due to the presence of magnetic powder, and the settling speed is greatly accelerated, thereby effectively improving the clarification effect of the wastewater.

[0016] By driving the feeding hopper to reciprocate on the top of the magnetic powder mixing pool, the magnetic powder can be more uniformly scattered into the mixing pool, avoiding local accumulation of the magnetic powder, so that the magnetic powder can be more uniformly distributed in the sewage, thereby better contacting with the pollutants in the sewage and improving the removal effect of the pollutants. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 An overall structure schematic view according to an embodiment of the present application is shown.

[0018] Figure 2 A partially cutaway schematic view according to an embodiment of the present application is shown.

[0019] Figure 3A structural schematic view of a magnetic powder adding mechanism is shown according to the embodiment of the present application.

[0020] Figure 4 A structural schematic view of a driving assembly is shown according to the embodiment of the present application.

[0021] Figure 5 A structural schematic view of a guiding assembly is shown according to the embodiment of the present application.

[0022] Figure 6 A structural schematic view of a stirring assembly is shown according to the embodiment of the present application.

[0023] Figure 7 A structural schematic view of a dosing mechanism is shown according to the embodiment of the present application.

[0024] Legend:

[0025] 1, treatment box; 2, primary treatment tank; 3, medicament mixing tank; 4, magnetic powder mixing tank; 5, flocculant mixing tank; 6, sedimentation tank; 7, dosing mechanism; 71, medicine box; 72, adding port; 73, medicine pump; 8, magnetic powder adding mechanism; 81, feeding hopper; 82, discharge pipe; 83, driving assembly; 831, support; 832, electric screw rod; 833, connecting frame; 84, guiding assembly; 841, guiding rod; 842, sliding seat; 85, stirring assembly; 851, fixing frame; 852, connecting sleeve; 853, connecting shaft; 854, stirring blade; 855, threaded end; 856, locking nut. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0027] Reference Figures 1-7 The wastewater treatment device in the production process of chloroacetone provided by the embodiment comprises a treatment box 1, a primary treatment tank 2, a medicament mixing tank 3, a magnetic powder mixing tank 4, a flocculant mixing tank 5 and a sedimentation tank 6 are sequentially formed in the inside of the treatment box 1 along the length direction of the treatment box 1, a dosing mechanism 7 is arranged on the top of the medicament mixing tank 3 and the flocculant mixing tank 5, and a magnetic powder adding mechanism 8 capable of uniformly adding magnetic powder is arranged on the top of the magnetic powder mixing tank 4, the dosing mechanism 7 comprises a medicine box 71 arranged on the top of the medicament mixing tank 3 and the flocculant mixing tank 5, an adding port 72 is arranged on the top of the medicine box 71, and a medicine pump 73 is arranged on the medicine box 71.

[0028] The wastewater in the chloroacetone production process enters the primary treatment tank 2 from the water inlet at the top of the treatment box 1, and the sewage is preliminarily precipitated in the primary treatment tank 2, and then enters the reagent mixing tank 3 under the action of the water pump, the medicine box 71 at the top of the reagent mixing tank 3 is provided with a PH regulator, and the medicine pump 73 sends the PH regulator in the medicine box 71 into the reagent mixing tank 3, so as to adjust the PH value of the sewage, and the appropriate pH value is beneficial to the exposure of the active site on the surface of the magnetic powder and the enhancement of the adsorption capacity of the magnetic powder to the pollutants in the wastewater. The sewage with the adjusted PH value enters the magnetic powder mixing tank 4 under the action of the water pump, and then the magnetic powder enters the magnetic powder mixing tank 4 under the action of the magnetic powder adding mechanism 8, and then the wastewater enters the flocculating agent mixing tank 5 through the water pump, the medicine box 71 at the top of the flocculating agent mixing tank 5 is provided with a flocculating agent, and the medicine pump 73 sends the flocculating agent into the flocculating agent mixing tank 5. When the magnetic powder and the flocculating agent act together, the magnetic powder can act as a flocculating core, so that more impurity particles are adsorbed on the surface of the flocculating agent, and larger flocs are formed. These flocs are more compact due to the presence of the magnetic powder, and the settling velocity is greatly accelerated. The sewage in the flocculating agent mixing tank 5 enters the sedimentation tank 6 through the water pump, and the clear water is discharged through the drain pipe after sedimentation in the sedimentation tank 6.

[0029] Specifically, as shown in Figures 2-5 The magnetic powder adding mechanism 8 includes a feeding hopper 81, the bottom of the feeding hopper 81 is provided with a discharge pipe 82 extending into the inside of the magnetic powder mixing tank 4, and the feeding hopper 81 reciprocally moves on the top of the magnetic powder mixing tank 4 through a driving assembly 83. The driving assembly 83 includes a support 831 fixed on the treatment box 1, the top of the support 831 is provided with an electric screw rod 832, and the output end of the electric screw rod 832 is provided with a connecting frame 833 connected with the feeding hopper 81.

[0030] The magnetic powder to be added is contained in the feeding hopper 81, and an electric control valve is arranged on the discharge pipe 82 at the bottom of the feeding hopper 81. When the magnetic powder is added, the electric control valve on the discharge pipe 82 is opened, and the electric screw rod 832 on the support 831 is started at the same time. The electric screw rod 832 drives the feeding hopper 81 to reciprocally move on the top of the magnetic powder mixing tank 4 through the connecting frame 833, so that the magnetic powder can be more uniformly scattered into the mixing tank. Compared with fixed position feeding, this dynamic feeding mode can avoid the accumulation of magnetic powder in a local position, so that the magnetic powder is more uniformly distributed in the sewage, thereby better contacting with the pollutants in the sewage, so that the magnetic powder can fully play its functions of adsorption, flocculation and the like, and the removal effect on the pollutants is improved.

[0031] It needs to be explained that the feeding hopper 81 is provided with a guide assembly 84 for guiding its movement, the guide assembly 84 comprises guide rods 841 provided between the supports 831, the guide rods 841 are slidably connected with sliding seats 842 connected with the feeding hopper 81, the guide rods 841 and the sliding seats 842 can ensure that the feeding hopper 81 moves in a predetermined straight line, prevent the feeding hopper 81 from deviating from the track, ensure that the magnetic powder is uniformly distributed in the mixing pool, and the cooperation of the guide rods 841 and the sliding seats 842 can bear part of the lateral force of the feeding hopper 81 during movement, improve the stability of the movement.

[0032] Specifically, as shown in Figure 2 、 Figure 3 and Figure 6 , the magnetic powder adding mechanism 8 further comprises a stirring assembly 85, the stirring assembly 85 comprises fixed frames 851 provided on both sides of the feeding hopper 81, the fixed frames 851 are provided with connecting shafts 853 through connecting sleeves 852, the bottom of the connecting shafts 853 is provided with stirring blades 854, the top of the connecting shafts 853 is provided with threaded end heads 855 penetrating the fixed frames 851, and the threaded end heads 855 are provided with locking nuts 856 abutting against the fixed frames 851.

[0033] Among them, the connecting shaft 853 abuts against the bottom of the fixed frame 851 after penetrating the connecting sleeve 852, and the threaded end head 855 at the top penetrates the fixed frame 851 and is fixed through the locking nut 856, so as to realize the installation of the connecting shaft 853 on the fixed frame 851, when the feeding hopper 81 moves under the driving action of the driving assembly 83, the connecting shaft 853 and the stirring blade 854 can move with it, so as to stir the wastewater in the magnetic powder mixing pool 4, so that the magnetic powder and the wastewater are fully mixed, and the utilization rate of the magnetic powder is improved.

[0034] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A wastewater treatment device for the production of chloroacetone, characterized in that, The treatment tank (1) includes a primary treatment tank (2), a reagent mixing tank (3), a magnetic powder mixing tank (4), a flocculant mixing tank (5) and a sedimentation tank (6) arranged sequentially along its length. The top of the reagent mixing tank (3) and the flocculant mixing tank (5) is provided with a dosing mechanism (7), and the top of the magnetic powder mixing tank (4) is provided with a magnetic powder adding mechanism (8) that can uniformly add magnetic powder. The magnetic powder adding mechanism (8) includes a feeding hopper (81), the bottom of which is provided with a discharge pipe (82) extending into the magnetic powder mixing tank (4), and the feeding hopper (81) moves back and forth on the top of the magnetic powder mixing tank (4) by a drive assembly (83). The drive assembly (83) includes a bracket (831) fixed on the processing box (1), the top of which is provided with an electric lead screw (832), and the output end of the electric lead screw (832) is provided with a connecting frame (833) connected to the feeding hopper (81).

2. The wastewater treatment device for the chloroacetone production process according to claim 1, characterized in that, The feed hopper (81) is provided with a guide assembly (84) for guiding its movement. The guide assembly (84) includes a guide rod (841) disposed between the brackets (831), and a slide block (842) connected to the feed hopper (81) is slidably connected to the guide rod (841).

3. The wastewater treatment device for the chloroacetone production process according to claim 2, characterized in that, The magnetic powder adding mechanism (8) also includes a stirring component (85); The stirring assembly (85) includes a fixed frame (851) disposed on both sides of the feed hopper (81), a connecting shaft (853) is disposed on the fixed frame (851) through a connecting sleeve (852), and a stirring blade (854) is disposed at the bottom of the connecting shaft (853).

4. The wastewater treatment device for the chloroacetone production process according to claim 3, characterized in that, The top of the connecting shaft (853) is provided with a threaded end (855) that passes through the fixing frame (851), and a locking nut (856) that abuts against the fixing frame (851) is provided on the threaded end (855).

5. A wastewater treatment device for the chloroacetone production process according to claim 1, characterized in that, The dosing mechanism (7) includes a dosing tank (71) installed on top of the dosing tank (3) and the flocculant mixing tank (5). The top of the dosing tank (71) is provided with an addition port (72), and a dosing pump (73) is provided on the dosing tank (71).

Images