Pretreatment device for improving biochemical efficiency of bamboo high-yield pulp wastewater

Abstract

The utility model discloses a pretreatment device for improving the biochemical efficiency of bamboo high-yield pulp wastewater, which comprises a base, a pretreatment box is mounted on the base, an inner-layer screen frame and an outer-layer screen frame which are concentric are arranged in the pretreatment box, an inner-layer filler area is arranged in the inner-layer screen frame, and an outer-layer filler area is arranged in the outer-layer screen frame. The area between the outer-layer screen frame and the side wall of the box body of the treatment box is set as an outer-layer filler area, and the inner-layer filler area and the outer-layer filler area are correspondingly filled with micro-electrolysis filler. The whole structure of the device is very reasonable, the inner-layer screen frame and the outer-layer screen frame not only form a storage and placement area of the micro-electrolysis filler, but also form a mounting area of the stirring mechanism and the high-voltage electrode, and the whole structure is very reasonable; the arrangement of the four high-voltage electrodes in the device enables the distribution of an internal electric field to be uniform, the wastewater treatment effect is improved, the arrangement of the four groups of stirring electrodes can accelerate wastewater flow, and the wastewater treatment effect can also be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bamboo wastewater treatment, in particular to a pretreatment device for improving the biochemical efficiency of high-yield bamboo pulp wastewater. Background Technique

[0002] There are many types of bamboo in China, and bamboo resources are rich, with about more than 500 species distributed in China. The aspect ratio of bamboo fibers is large, and the fiber length is between that of softwood fibers and hardwood fibers, second only to softwood fibers, making it an excellent raw material for papermaking.

[0003] The pulping methods of bamboo mainly include chemical methods and chemo-mechanical methods. The chemical method uses high-concentration chemicals to dissolve the non-fiber components in the tissue, generating pulping black liquor with a huge pollution load. However, chemical bamboo pulp mills often use alkali recovery technology to evaporate, concentrate, burn the black liquor and recover inorganic alkali. The pollution load of the middle-stage water composed of bamboo washing water, bleaching water, dirty condensate water and workshop flushing water is not high.

[0004] Chemo-mechanical pulping is also called high-yield pulp due to its high yield. High-yield pulping has inherent advantages such as simple process, low investment, low production cost, high yield, and clean production process. High-yield pulping products are being widely used, and high-yield bamboo pulping has been widely studied and rapidly applied.

[0005] Since the pollution load of high-yield bamboo pulping is relatively small, the generated wastewater can be directly discharged into the water treatment system for biological treatment without using alkali recovery technology. Due to the application of water-saving technology, the organic matter concentration of these wastewaters is much higher than that of the middle-stage water of the chemical method, containing a large amount of organic matters such as sugars, organic acids, amino acids, flavonoids, tannic acid, etc., increasing the difficulty of wastewater treatment. If it can be pre-treated for polymer degradation and improvement of biodegradability, the subsequent biological treatment difficulty will be greatly reduced.

[0006] Therefore, in order to solve the above problems, it is necessary to develop a pretreatment device with a reasonable structure for improving the biochemical efficiency of high-yield bamboo pulp wastewater. Content of the Utility Model

[0007] The purpose of the utility model is to provide a pretreatment device for improving the biochemical efficiency of high-yield bamboo pulp wastewater in view of the deficiencies of the existing technology; its technical solution is as follows:

[0008] A pretreatment device for improving the biochemical efficiency of high-yield bamboo pulp wastewater includes a base, on which a pretreatment box is installed. An inner mesh frame and an outer mesh frame with the same center are arranged in the pretreatment box. The area inside the inner mesh frame is set as the inner filler area, and the area between the outer mesh frame and the side wall of the box of the treatment box is set as the outer filler area. Micro-electrolysis fillers are correspondingly filled in both the inner filler area and the outer filler area.

[0009] An annular installation area is formed between the inner packing area and the outer packing area, and evenly spaced high-voltage electrodes are correspondingly installed in the installation area. The high-voltage electrodes are in a rod shape and are correspondingly fixed on the base; and a stirring mechanism is also installed in the installation area.

[0010] Furthermore, a water inlet pipe is installed at the lower left end of the pretreatment tank, and a water outlet pipe is correspondingly installed at the upper right end of the pretreatment tank.

[0011] Furthermore, a power supply device is installed on the outer side of the base. The power supply device is connected with a wire, and the wire is embedded in the base and is correspondingly connected with the high-voltage electrode fixed on the base.

[0012] Furthermore, the stirring mechanism includes a stirring motor arranged at the upper end of the pretreatment tank. The main shaft of the stirring motor extends into the installation area, and the main shaft passes downward and is correspondingly fixed on the base through a bearing member. Stirring rods are correspondingly installed on the main shaft.

[0013] Furthermore, a total of four high-voltage electrodes are arranged in the installation area; a total of four groups of stirring mechanisms are arranged in the installation area, and the four high-voltage electrodes and the four groups of stirring mechanisms are installed in a staggered and evenly spaced manner in the installation area.

[0014] Furthermore, the installation area is located at the middle position on the radius of the pretreatment tank, and the stirring mechanism and the high-voltage electrode are arranged at the middle position on the radius of the pretreatment tank. The high-voltage electrode and the stirring mechanism are located on the same circumference.

[0015] Advantageous effects: The utility model has the following advantageous effects:

[0016] 1) The overall structure of the device is very reasonable. The inner and outer two-layer wire frames not only constitute the storage and placement area of the micro-electrolysis filler but also constitute the installation area of the stirring mechanism and the high-voltage electrode, and the overall structure is very reasonable;

[0017] 2) In the device, both the stirring mechanism and the high-voltage electrode in the installation area are correspondingly provided with four, and they are arranged in a staggered and evenly spaced manner. The setting of the four high-voltage electrodes can make the internal electric field distribution uniform and increase the wastewater treatment effect, while the four groups of stirring electrodes can accelerate the flow of wastewater and can also improve the wastewater treatment effect;

[0018] 3) In the device, the inner and outer packing areas can correspondingly fill and store the micro-electrolysis filler, and more micro-electrolysis fillers can be stored to the greatest extent on the premise of setting the high-voltage electrode and the stirring mechanism, and the space utilization rate is high. Description of the Drawings

[0019] Figure 1 This is the structural diagram of the utility model;

[0020] Figure 2 It is Figure 1 the A-A cross-sectional view in

[0021] Figure 3 It is Figure 2 the B-B cross-sectional view in Specific implementation manner

[0022] The following further clarifies the utility model in conjunction with the accompanying drawings and specific embodiments. These embodiments are implemented on the premise of the technical solution of the utility model, and it should be understood that these embodiments are only used to illustrate the utility model and not to limit the scope of the utility model.

[0023] As Figure 1 、 Figure 2 and Figure 3 shown, a pretreatment device for improving the biochemical efficiency of bamboo high-yield pulp wastewater includes a base 1, on which a pretreatment tank 2 is installed. Inside the pretreatment tank 2, a concentric inner mesh frame 3 and an outer mesh frame 4 are provided. The area inside the inner mesh frame 3 is set as the inner packing area 5, and the area between the outer mesh frame 4 and the side wall of the tank body of the treatment tank is set as the outer packing area 6. Micro-electrolysis fillers 7 are correspondingly filled in both the inner packing area 5 and the outer packing area 6;

[0024] And an annular installation area 8 is formed between the inner packing area 5 and the outer packing area 6. Evenly spaced high-voltage electrodes 9 are correspondingly installed in the installation area 8. The high-voltage electrodes 9 are rod-shaped structures and are correspondingly fixed on the base 1; and a stirring mechanism is also installed in the installation area 8.

[0025] A water inlet pipe 10 is installed at the lower left end of the pretreatment tank 2, and a water outlet pipe 11 is correspondingly installed at the upper right end of the pretreatment tank 2.

[0026] A power supply device 12 is also installed on the outside of the base 1. The power supply device 12 is connected with a wire 13, and the wire 13 is embedded in the base 1 and is correspondingly connected with the high-voltage electrode 9 fixed on the base 1.

[0027] The stirring mechanism includes a stirring motor 14 arranged at the upper end of the pretreatment tank 2. The main shaft 15 of the stirring motor 14 extends into the installation area 8. The main shaft 15 passes downward and is correspondingly fixed on the base 1 through a bearing member 16. Stirring rods 17 are correspondingly installed on the main shaft 15.

[0028] A total of four high-voltage electrodes 9 are provided in the installation area 8; a total of four groups of stirring mechanisms are provided in the installation area 8, and the four high-voltage electrodes 9 and the four groups of stirring mechanisms are installed in a staggered and evenly spaced manner in the installation area 8.

[0029] The installation area 8 is located at the middle position on the radius of the pretreatment tank 2, while the stirring mechanism and the high-voltage electrode 9 are arranged at the middle position on the radius of the pretreatment tank 2, and the high-voltage electrode 9 and the stirring mechanism are located on the same circumference.

[0030] The working process of this device is as follows: Wastewater enters the pretreatment tank from the water inlet pipe on the left side and gradually fills the whole pretreatment tank. When the wastewater discharges, it is discharged from the water outlet pipe on the right side. There are two layers of wire frames, one inside and one outside, in the whole pretreatment tank. The area inside the inner wire frame is set as the inner packing area, and the area outside the outer wire frame is the outer packing area. Both packing areas are filled with micro-electrolysis packing, and the area between the two wire frames is set as the installation area for the stirring mechanism and the high-voltage electrode.

[0031] During the process of the whole discharge of the wastewater, after multiple stirring mechanisms are started, they drive the wastewater inside to stir, generating wastewater flow, and after the high-voltage electrode is electrified, an electric field is generated to electrolyze the micro-electrolysis packing. The working principle of the micro-electrolysis packing is as follows:

[0032] The micro-electrolysis technology is also known as the internal electrolysis method. It is simple to operate and has no secondary pollution. Its principle is to place two metals with a potential difference or a conductive metal and other conductive non-metal substances in a conductive electrolyte solution, and numerous primary electrode reactions will occur rapidly in the system. The newly generated metal cations and atomic H, etc. produced by the electrode reactions have high chemical activity and can react with many components in the wastewater, thus achieving the purpose of purifying the wastewater; during the process of the stirring mechanism driving the wastewater to flow, the wastewater is purified by micro-electrolysis, realizing wastewater treatment.

[0033] The overall structure of this device is very reasonable. The inner and outer two-layer wire frames not only constitute the storage and placement area of the micro-electrolysis packing but also the installation area of the stirring mechanism and the high-voltage electrode, and the overall structure is very reasonable.

[0034] The above specific implementation manner is only a preferred embodiment of the present utility model and is not used to limit the implementation and the scope of the claims of the present utility model. All equivalent changes and modifications made according to the content of the patent protection scope of the present utility model shall be included within the scope of the patent application of the present utility model.

Claims

1. A pretreatment device for improving the biochemical efficiency of bamboo high-yield pulp wastewater, characterized in that: The invention comprises a base (1), on which a pretreatment box (2) is mounted, wherein the pretreatment box (2) is provided with a concentric inner mesh frame (3) and an outer mesh frame (4), wherein the area inside the inner mesh frame (3) is provided as an inner filler area (5), and the area between the outer mesh frame (4) and the side wall of the treatment box is provided as an outer filler area (6), and the inner filler area (5) and the outer filler area (6) are respectively filled with micro-electrolysis fillers (7); An annular installation area (8) is formed between the inner filling area (5) and the outer filling area (6), and high-voltage electrodes (9) are installed in the installation area (8) at even intervals. The high-voltage electrodes (9) are rod-shaped structures and are fixed on the base (1). A stirring mechanism is also installed in the installation area (8).

2. The device for pre-treating bamboo high-yield pulp wastewater to improve biochemical efficiency according to claim 1, characterized in that: A water inlet pipe (10) is installed at the lower left end of the pretreatment box (2), and a water outlet pipe (11) is correspondingly installed at the upper right end of the pretreatment box (2).

3. The device for pre-treating bamboo high-yield pulp wastewater to improve biochemical efficiency according to claim 1, characterized in that: A power supply device (12) is also installed on the outside of the base (1), and the power supply device (12) is connected to a wire (13). The wire (13) is embedded in the base (1) and is correspondingly connected to a high-voltage electrode (9) fixed on the base (1).

4. The device for pre-treating bamboo high-yield pulp wastewater to improve biochemical efficiency according to claim 1, characterized in that: The stirring mechanism comprises a stirring motor (14) arranged at the upper end of the pretreatment box (2), the main shaft (15) of the stirring motor (14) extends into the installation area (8), the main shaft (15) is fixed downwardly on the base (1) through a bearing member (16), and a stirring rod (17) is correspondingly installed on the main shaft (15).

5. The device for pre-treating bamboo high-yield pulp wastewater to improve biochemical efficiency according to claim 1, characterized in that: A total of four high-voltage electrodes (9) are arranged in the installation area (8); a total of four groups of stirring mechanisms are arranged in the installation area (8), and the four high-voltage electrodes (9) and the four groups of stirring mechanisms are evenly installed in a staggered manner in the installation area (8).

6. A pretreatment device for improving the biochemical efficiency of bamboo high-yield pulp wastewater according to claim 5, characterized in that: The installation area (8) is located at the middle position of the radius of the pretreatment box (2), while the stirring mechanism and the high-voltage electrode (9) are arranged at the middle position of the radius of the pretreatment box (2), and the high-voltage electrode (9) and the stirring mechanism are located on the same circumference.

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