Calcium ion recovery device for high-calcium waste liquid

Abstract

The utility model discloses a high-calcium waste liquid calcium ion recovery device which comprises an amidated pectin feeding device, a stirring reaction tank, a gel separation device and a calcium salt recovery unit, the gel separation device comprises a separation filter screen and a driving assembly used for driving the separation filter screen to be separated from the liquid level of waste liquid in the reaction tank, the separation filter screen is connected with the driving end of the driving assembly, and the feeding position of the amidated pectin feeding device is located on the separation filter screen; after amidated pectin fully reacts with calcium ions in the waste liquid, the driving assembly drives the separation filter screen, so that the pectin after reaction can be quickly recovered, and the calcium ions in the waste liquid can be efficiently recovered under the condition of ensuring the treatment cost.

Description

Technical Field

[0001] The utility model belongs to the technical field of wastewater treatment equipment, in particular to a calcium ion recovery device for high-calcium waste liquid. Background Art

[0002] Industrial wastewater often contains high concentrations of calcium ions. When calcium ions are deposited excessively, not only can the discharge standards not be met, but wastewater treatment equipment will also be blocked. At present, the common method for treating high-calcium wastewater is to add decalcification agents, but this method has high treatment costs and forms a lot of calcium salt impurities after treatment. It can only be treated as solid waste and cannot achieve the recycling of calcium resources. Utility Model Content

[0003] In order to overcome the deficiencies of the prior art, the utility model provides a calcium ion recovery device for high-calcium waste liquid, which can effectively recover calcium ions and reduce waste liquid discharge pollution while ensuring processing costs.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a calcium ion recovery device for high-calcium waste liquid, comprising an amidated pectin dosing device, a stirring reaction tank, a gel separation device and a calcium salt recovery unit, wherein the gel separation device is located in the stirring reaction tank, the gel separation device comprises a separation filter and a driving component for driving the separation filter to separate from the waste liquid surface in the reaction tank, the separation filter is connected to the driving end of the driving component, and the feeding position of the amidated pectin dosing device is located on the separation filter.

[0005] Preferably, the driving assembly is a telescopic member fixed to one side of the reaction tank.

[0006] Preferably, one end of the separation filter is hinged to the driving end of the driving assembly, and a stop block for limiting the rotation of the separation filter is provided on the driving end of the driving assembly.

[0007] Preferably, the gel separation device also includes a flip driving component for pouring the gel on the separation filter into the calcium salt recovery unit, the flip driving component includes a driving motor, a rocker provided on the driving end of the driving motor, a connecting rod hinged on the rocker, a slider hinged on the connecting rod, a slide rail for guiding the movement of the slider and a pull rope for connecting the slider to the separation filter, one end of the pull rope is fixed to the separation filter, and the other end is connected to the slider; a reset member for driving the separation filter to flip and reset is provided on the separation filter.

[0008] Preferably, the pull rope is guided by a fixed pulley.

[0009] Preferably, the reset element may be a torsion spring.

[0010] Preferably, the notch of the stirring reaction tank is provided with a limit stop for limiting the flipping angle of the separation filter, and the limit stop is fixedly connected to one side of the separation filter in the outward flipping direction.

[0011] Preferably, the amidated pectin dosing device is an amidated pectin conveyor belt, and the discharge end of the amidated pectin conveyor belt is located above the stirring reaction tank.

[0012] The technical effect of the utility model is that after the amidated pectin and the calcium ions in the waste liquid are fully reacted, the separation filter is driven by the driving component to realize the rapid recovery of the pectin after the reaction, and the calcium ions in the waste liquid are efficiently recovered while ensuring the processing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the utility model.

[0014] The main technical features in the figure are marked as follows: 1. Amidated pectin dosing device; 2. Stirring reaction tank; 3. Stirring pump; 4. Separation filter; 5. Driving assembly; 6. Stop block; 71. Driving motor; 72. Rocker; 73. Connecting rod; 74. Sliding block; 75. Slide rail; 76. Pull rope; 77. Fixed pulley; 78. Limit stop platform; 8. Filter bucket; 9. Freeze dryer; 101. Amidated low-fat pectin; 102. Pectin. DETAILED DESCRIPTION

[0015] The present invention will be further described below through specific implementation modes and accompanying drawings.

[0016] like Figure 1A calcium ion recovery device for high-calcium waste liquid, characterized in that it includes an amidated pectin dosing device 1, a stirring reaction tank 2, a gel separation device and a calcium salt recovery unit, the amidated pectin dosing device 1 is an amidated pectin conveyor belt, which is a prior art, and the discharge port of the amidated pectin conveyor belt is located above the stirring reaction tank 2; the stirring reaction tank 2 is a prior art, which is provided with a stirring pump 3 and a stirring paddle. The gel separation device is located in the stirred reaction tank 2, and the gel separation device includes a separation filter 4 and a driving component 5. The driving component 5 is an oil cylinder. The base of the oil cylinder is installed at the bottom of the stirred reaction tank 2, and it is vertically arranged on one side of the stirred reaction tank 2. The top of the output end of the oil cylinder is higher than the stirred reaction tank 2, and the top is hinged with a separation filter 4. The separation filter 4 can be a net bag structure. In the initial state, the separation filter 4 is located on the side of the oil cylinder away from the side edge of the stirred reaction tank 2. A reset member is provided at the hinge between the separation filter 4 and the output end of the oil cylinder for flipping and resetting the separation filter 4. The reset member can be a torsion spring. A stop block 6 is fixedly connected to the output end of the oil cylinder. The stop block 6 is located below the separation filter 4 to limit the stroke of the separation filter 4 while auxiliary supporting the position of the separation filter 4 to ensure that the separation filter 4 is horizontally arranged to prevent the pectin thereon from falling.

[0017] Furthermore, the gel separation device also includes a flipping drive component for pouring the gel on the separation filter 4 into the calcium salt recovery unit, which includes a driving motor 71, a rocking arm 72, a connecting rod 73, a slider 74, a slide rail 75 and a pull rope 76. The output end of the driving motor 71 is fixedly connected to the rocking arm 72, one end of the rocking arm 72 is hinged to the connecting rod 73, one end of the connecting rod 73 is hinged to the slider 74, the slider 74 is slidably connected to the slide rail 75, and a pull rope 76 is connected to the slider 74. The slide rail 75 and the driving motor 71 are fixedly installed at corresponding positions in the workshop, and one end of the pull rope 76 is connected to the separation filter 4 to pull the separation filter 4 to flip; and because the pull rope 76 is generally long, a fixed pulley 77 is provided to cooperate with the guide setting.

[0018] Furthermore, a limit stop 78 is fixedly connected to the tank wall of the stirring reaction tank 2 between the oil cylinder and the calcium salt recovery unit to limit the maximum flipping angle of the separation filter 4.

[0019] Specifically, the calcium salt recovery unit includes a funnel 8 and a freeze dryer 9. The separation filter 4 is flipped and located above the funnel 8. The discharge port of the funnel 8 is connected to the freeze dryer 9 to separate the pectin from the waste liquid through the separation filter 4 and then obtain dry pectin through the freeze dryer 9.

[0020] It should be noted that the pectin mechanism is divided into two types according to the degree of pectin esterification. High-ester pectin needs to form gel under high sugar and high acid conditions, while low-ester pectin usually needs to add calcium ions to form an egg-box structure to gel. Amidated pectin refers to pectin containing CONH-R (R = H, OH, carbon free radical), which is a common pectin derivative. Amidated pectin has good gel properties under low sugar and low calcium ion concentration conditions, which is very conducive to the formation of gel.

[0021] The specific implementation process of the utility model is as follows: high-calcium waste liquid (calcium ion concentration>0.5mol / L) and pure water are added to the stirring reaction tank 2, and then amidated low-ester pectin 101 is added to the separation filter 4 through the amidated pectin conveyor belt. The separation filter 4 drops to the bottom of the stirring reaction tank 2 as the oil cylinder contracts. The stirring reaction tank 2 stirs the waste liquid so that the amidated low-ester pectin 101 is fully contacted and reacted with the calcium ions of the diluted waste liquid. The oil cylinder is extended, and the separation filter 4 moves up to separate from the waste liquid. The driving motor 71 is driven, and the separation filter 4 is pulled over by the pull rope 76 to pour the pectin 102 obtained after the reaction into the funnel 8, and enters the freeze dryer 9 through the funnel 8 to obtain dry pectin (particle size<50μm), so that the calcium ion concentration in the remaining waste liquid is<0.001mol / L.

[0022] The above description is only a specific embodiment of the present invention, but the structural features of the present invention are not limited thereto. The present invention can be used on similar products. Any changes or modifications made by any technician in the field of the present invention are covered by the patent scope of the present invention.

Claims

1. A calcium ion recovery device for high-calcium waste liquid, characterized in that: The invention comprises an amidated pectin dosing device (1), a stirring reaction tank (2), a gel separation device and a calcium salt recovery unit. The gel separation device is located in the stirring reaction tank (2). The gel separation device comprises a separation filter (4) and a driving component (5) for driving the separation filter (4) to separate from the waste liquid surface in the reaction tank. The separation filter (4) is connected to the driving end of the driving component (5), and the feeding position of the amidated pectin dosing device (1) is located on the separation filter (4).

2. A calcium ion recovery device for high-calcium waste liquid according to claim 1, characterized in that: The driving component (5) is a telescopic component fixed to one side of the reaction tank.

3. A calcium ion recovery device for high-calcium waste liquid according to claim 1, characterized in that: One end of the separation filter (4) is hinged to the driving end of the driving assembly (5), and a stop block (6) for limiting the rotation of the separation filter (4) is provided on the driving end of the driving assembly (5).

4. A calcium ion recovery device for high-calcium waste liquid according to claim 3, characterized in that: The gel separation device also includes a flip driving component for pouring the gel on the separation filter (4) into the calcium salt recovery unit, the flip driving component including a drive motor (71), a rocker (72) provided on the drive end of the drive motor (71), a connecting rod (73) hinged on the rocker (72), a slider (74) hinged on the connecting rod (73), a slide rail (75) for guiding the slider (74) to move, and a pull rope (76) for connecting the slider (74) with the separation filter (4), one end of the pull rope (76) being fixed to the separation filter (4) and the other end being connected to the slider (74); a reset member for driving the separation filter (4) to flip and reset is provided on the separation filter (4).

5. A calcium ion recovery device for high-calcium waste liquid according to claim 4, characterized in that: The pull rope (76) is guided by a fixed pulley (77).

6. A calcium ion recovery device for high-calcium waste liquid according to claim 4, characterized in that: The reset element may be a torsion spring.

7. A calcium ion recovery device for high-calcium waste liquid according to claim 4, characterized in that: The notch of the stirring reaction tank (2) is provided with a limit stop (78) for limiting the flipping angle of the separation filter (4); the limit stop (78) is fixedly connected to one side of the separation filter (4) in the outward flipping direction.

8. A calcium ion recovery device for high-calcium waste liquid according to claim 1, characterized in that: The amidated pectin dosing device (1) is an amidated pectin conveyor belt, and its discharge end is located above the stirring reaction tank (2).

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