Low-salt light wastewater treatment and recycling device

Abstract

The utility model belongs to the technical field of wastewater treatment and reuse, and particularly relates to a low-salt light wastewater treatment and reuse device which comprises an adjusting tank, a sedimentation tank, a D-type filter tank, an ultrafiltration treatment mechanism and a reverse osmosis treatment mechanism, the ultrafiltration treatment mechanism is composed of an ultrafiltration membrane filter cartridge and a booster pump, the reverse osmosis treatment mechanism is composed of a reverse osmosis membrane filter cartridge and a booster pump, a stirring mechanism is installed in the adjusting tank, and liquid pumping mechanisms are installed between the adjusting tank and the sedimentation tank and between the sedimentation tank and the D-type filter tank. And a plurality of pressurizing water pumps are mounted, so that the whole device can realize wastewater treatment in various modes, and when the content of composition substances of the low-salt light wastewater is changed, the expected treatment effect can be achieved after the low-salt light wastewater is treated by the device, so that the practicability of the device is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to wastewater treatment reuse technical field, concretely is a kind of low salt dilute wastewater treatment reuse device. BACKGROUND

[0002] Low salt dilute wastewater generally refers to the wastewater with low salt concentration, mainly containing impurities such as suspended solids and organic matter. This kind of wastewater is common in industrial fields such as power plants and chemical plants, and has the characteristics of relatively simple treatment and large recovery potential. The commonly used treatment process includes biological treatment, which uses the metabolic action of microorganisms to remove organic matter in wastewater. This method has a certain tolerance limit for salinity and is suitable for the treatment of low salt dilute wastewater. Through biological treatment, the organic matter content in wastewater can be further reduced, and the water quality can be improved. There is also a membrane separation method, such as reverse osmosis and nanofiltration, which can effectively separate salt and organic matter. Among them, the reverse osmosis membrane technology is widely used in desalination treatment of low salt dilute wastewater due to its high selective permeability.

[0003] The existing low salt dilute wastewater treatment reuse device generally uses a single treatment method. When the content of the constituent substances of low salt dilute wastewater changes, the treated wastewater cannot achieve the expected treatment effect and cannot be discharged. In order to make the treatment reuse device applicable to low salt dilute wastewater with different component contents and achieve the expected treatment effect, we propose a low salt dilute wastewater treatment reuse device. UTILITY MODEL CONTENT

[0004] In view of the deficiencies of the prior art, the utility model provides a low salt dilute wastewater treatment reuse device, which combines an adjusting tank, a sedimentation tank, a D-type filter tank, an ultrafiltration treatment mechanism and a reverse osmosis treatment mechanism with pipes, and then installs several pressure water pumps, so that the entire device can realize wastewater treatment in multiple ways. When the content of the constituent substances of low salt dilute wastewater changes, the device can also achieve the expected treatment effect after treatment, thereby greatly improving the practicality of the device and solving the problems in the background art.

[0005] To achieve the above purpose, the utility model realizes the following technical scheme:

[0006] A low salt dilute wastewater treatment reuse device, comprising an adjusting tank, a sedimentation tank, a D-type filter tank, an ultrafiltration treatment mechanism and a reverse osmosis treatment mechanism, the ultrafiltration treatment mechanism is composed of a tubular ultrafiltration membrane filter cartridge and several impurity filter cartridges, the reverse osmosis treatment mechanism is composed of a reverse osmosis membrane filter cartridge and a booster pump, a stirring mechanism is installed in the adjusting tank, and a liquid pumping mechanism is installed between the adjusting tank and the sedimentation tank and between the sedimentation tank and the D-type filter tank.

[0007] Preferably, the adjusting tank is fixedly provided with a wastewater inlet pipe, the liquid pumping mechanism comprises a sewage pump, the inlet end of the sewage pump is fixedly connected with an inlet pipe, the outlet end of the sewage pump is fixedly connected with an outlet pipe, the wastewater outlet end of the adjusting tank is fixedly connected with the outlet pipe of one of the liquid pumping mechanisms, the wastewater inlet end of the sedimentation tank is fixedly connected with the inlet pipe of one of the liquid pumping mechanisms, the wastewater outlet end of the sedimentation tank is fixedly connected with the outlet pipe of another of the liquid pumping mechanisms, the wastewater inlet end of the D-shaped filter tank is fixedly connected with the outlet pipe of another of the liquid pumping mechanisms, the wastewater outlet end of the D-shaped filter tank is connected with the ultrafiltration treatment mechanism through a long pipe, and the outlet end of the ultrafiltration treatment mechanism is fixedly connected with the reverse osmosis treatment mechanism through a wastewater guide pipe.

[0008] Preferably, the stirring mechanism comprises a cross fixed frame, the cross fixed frame is fixedly installed on the adjusting tank, the cross fixed frame is fixedly connected with a support column at the bottom, the bottom of the support column is fixedly connected with the bottom of the adjusting tank, a support frame is fixedly installed on the cross fixed frame, a stirring motor is fixedly installed on the support frame, a driving bevel gear is fixedly sleeved on the transmission shaft of the stirring motor, a short shaft is fixedly installed on the cross fixed frame, and a matched bevel gear is rotatably sleeved on the short shaft.

[0009] Preferably, four groups of support blocks are fixedly installed on the cross fixed frame, a transmission rod is rotatably installed on the support block, a driven bevel gear and a driving bevel gear are fixedly sleeved on the two ends of the transmission rod respectively, the driven bevel gear is meshed with the driving bevel gear and the matched bevel gear, four groups of stirring rods are rotatably arranged on the cross fixed frame, a transmission bevel gear is fixedly sleeved on the upper end of the stirring rod, the transmission bevel gear is meshed with the driving bevel gear, the bottom of the stirring rod is rotatably connected with the bottom of the adjusting tank, and a plurality of stirring blades are fixedly installed on the side edge of the stirring rod.

[0010] Preferably, an ultrafiltration membrane filter core is installed inside the tubular ultrafiltration membrane filter cartridge, a reverse osmosis membrane filter core is installed inside the reverse osmosis membrane filter cartridge, and a clean water outlet pipe is connected to the clean water outlet end of the reverse osmosis membrane filter cartridge.

[0011] Preferably, a plurality of guide holes are formed in the stirring blades, and the stirring blades are made of plastic blades. Beneficial effects

[0012] Compared with the prior art, the low-salt and dilute wastewater treatment and recycling device has the following beneficial effects:

[0013] The low-salt and light wastewater treatment and recycling device is combined by an adjusting tank, a sedimentation tank, a D-type filter tank, an ultrafiltration treatment mechanism and a reverse osmosis treatment mechanism through pipelines, and several pressurized water pumps are installed, so that the whole device can realize various wastewater treatment modes, and when the content of the composition of the low-salt and light wastewater changes, the expected treatment effect can also be achieved after treatment by the device, thereby greatly improving the practicability of the device. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a main structure schematic view of the utility model;

[0015] Figure 2 It is another view schematic view of the main structure of the utility model;

[0016] Figure 3 It is a stirring mechanism schematic view of the utility model;

[0017] Figure 4 It is an ultrafiltration treatment mechanism and reverse osmosis treatment mechanism schematic view of the utility model;

[0018] Figure 5 It is a liquid pumping mechanism schematic view of the utility model;

[0019] Figure 6 It is a Figure 3 It is an enlarged schematic view of A in the middle.

[0020] In the drawing: 1, adjusting tank; 2, sedimentation tank; 3, D-type filter tank; 4, ultrafiltration treatment mechanism; 5, reverse osmosis treatment mechanism; 6, stirring mechanism; 7, liquid pumping mechanism; 8, wastewater inlet pipe; 9, cross fixed frame; 10, stirring motor; 11, driving bevel gear; 12, driven bevel gear; 13, matched bevel gear; 14, transmission rod; 15, short shaft; 16, support column; 17, support block; 18, driving bevel gear; 19, transmission bevel gear; 20, stirring rod; 21, stirring blade; 22, long pipe; 23, impurity filter cartridge; 24, tubular ultrafiltration membrane filter cartridge; 25, wastewater guide pipe; 26, reverse osmosis membrane filter cartridge; 27, booster pump; 28, sewage pump; 29, liquid outlet pipe; 30, liquid inlet pipe; 31, support frame. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0022] Please refer toFigures 1-6 The utility model provides a technical scheme: a low salt light waste water treatment recycling device, including adjusting pool 1, sedimentation tank 2, D type filter tank 3, ultrafiltration treatment mechanism 4 and reverse osmosis treatment mechanism 5, and ultrafiltration treatment mechanism 4 is composed of tubular ultrafiltration membrane filter cartridge 24 and several impurity filter cartridges 23, and reverse osmosis treatment mechanism 5 is composed of reverse osmosis membrane filter cartridge 26 and booster pump 27, stirring mechanism 6 is installed in adjusting pool 1, and all are installed with liquid pumping mechanism 7 between adjusting pool 1 and sedimentation tank 2, between sedimentation tank 2 and D type filter tank 3, waste water inlet pipe 8 is fixedly installed on adjusting pool 1, and liquid pumping mechanism 7 includes sewage pump 28, the liquid inlet of sewage pump 28 is fixedly connected with liquid inlet pipe 30, the liquid outlet of sewage pump 28 is fixedly connected with liquid outlet pipe 29, the waste water liquid outlet of adjusting pool 1 is fixedly connected with the liquid outlet pipe 29 on one group liquid pumping mechanism 7, the waste water liquid inlet of sedimentation tank 2 is fixedly connected with the liquid inlet pipe 30 on one group liquid pumping mechanism 7, the waste water liquid outlet of sedimentation tank 2 is fixedly connected with the liquid outlet pipe 29 on another group liquid pumping mechanism 7, the waste water liquid inlet of D type filter tank 3 is fixedly connected with the liquid outlet pipe 29 on another group liquid pumping mechanism 7, and the waste water liquid outlet of D type filter tank 3 is connected with ultrafiltration treatment mechanism 4 through long pipe 22, and the liquid outlet of ultrafiltration treatment mechanism 4 is fixedly connected with reverse osmosis treatment mechanism 5 through waste water guide pipe 25, the inside of tubular ultrafiltration membrane filter cartridge 24 is installed with ultrafiltration membrane filter core, the inside of reverse osmosis membrane filter cartridge 26 is installed with anti-permeation membrane filter core, and the clean water outlet of reverse osmosis membrane filter cartridge 26 is connected with clean water outlet pipe;

[0023] When in use, the low-salt and dilute wastewater enters the adjusting tank 1 through the wastewater inlet pipe 8. The adjusting tank 1 can control the pH value of the low-salt and dilute wastewater by using the neutralization ability of the low-salt and dilute wastewater itself, thereby reducing the consumption of chemicals in the neutralization process. Meanwhile, the adjusting tank 1 can reduce the fluctuation of the flow of the low-salt and dilute wastewater entering the physical and chemical treatment system, stabilize the feeding rate of the chemicals used in the treatment of the wastewater, and be suitable for the capacity of the feeding equipment. After being treated by the adjusting tank 1, the low-salt and dilute wastewater enters the sedimentation tank 2 through the liquid pumping mechanism 7. The sedimentation tank 2 removes the impurities such as suspended particles, colloids, and algae with a density greater than water from the low-salt and dilute wastewater by gravity sedimentation, thereby improving the clarity and quality of the low-salt and dilute wastewater. Then, the low-salt and dilute wastewater enters the D-type filter tank 3 through the liquid pumping mechanism 7. The fiber filter material in the D-type filter tank 3 can significantly remove the impurities such as suspended solids, colloids, and organic matter in the low-salt and dilute wastewater, thereby improving the quality of the effluent. The treated low-salt and dilute wastewater enters the ultrafiltration treatment mechanism 4 through the long pipe 22. The low-salt and dilute wastewater first passes through the impurity filter cartridge 23 in the ultrafiltration treatment mechanism 4, which can remove large-particle impurities in the low-salt and dilute wastewater in advance to avoid blockage of the large-particle impurities in the pipeline. Then, the low-salt and dilute wastewater enters the tubular ultrafiltration membrane filter cartridge 24 for ultrafiltration treatment, which removes the suspended solids, colloids, and macromolecular organic matter impurities in the wastewater. Then, the low-salt and dilute wastewater enters the reverse osmosis treatment mechanism 5 through the wastewater guide pipe 25. The reverse osmosis treatment can be used to remove the dissolved ions and micro-particles in the wastewater, thereby obtaining high-purity water to achieve the expected treatment effect and meet the discharge standard.

[0024] The stirring mechanism 6 comprises a cross-shaped fixing frame 9 fixedly installed on the adjusting tank 1. A support column 16 is fixedly connected to the bottom of the cross-shaped fixing frame 9, and the bottom of the support column 16 is fixedly connected to the bottom of the adjusting tank 1. A support frame 31 is fixedly installed on the cross-shaped fixing frame 9. A stirring motor 10 is fixedly installed on the support frame 31. A driving bevel gear 11 is fixedly sleeved on the transmission shaft of the stirring motor 10. A short shaft 15 is fixedly installed on the cross-shaped fixing frame 9. A matching bevel gear 13 is rotatably sleeved on the short shaft 15. Four support blocks 17 are fixedly installed on the cross-shaped fixing frame 9. A transmission rod 14 is rotatably installed on each support block 17. A driven bevel gear 12 and a driving bevel gear 18 are fixedly sleeved on the two ends of the transmission rod 14, respectively. The driven bevel gear 12 is meshed with the driving bevel gear 11 and the matching bevel gear 13. Four stirring rods 20 are rotatably penetrated through the cross-shaped fixing frame 9. A transmission bevel gear 19 is fixedly sleeved on the upper end of each stirring rod 20. The transmission bevel gear 19 is meshed with the driving bevel gear 18. The bottom of each stirring rod 20 is rotatably connected to the bottom of the adjusting tank 1. A plurality of stirring blades 21 are fixedly installed on the side edge of each stirring rod 20. A plurality of guide holes are formed in each stirring blade 21. Each stirring blade 21 is made of plastic blade.

[0025] In use, the stirring motor 10 is started, the transmission shaft of the stirring motor 10 drives the driving bevel gear 11 to rotate, under the cooperation of the cooperating bevel gear 13, the four groups of driven bevel gears 12 start to rotate, under the limitation of the supporting block 17, the driven bevel gears 12 drive the transmission rod 14 and the driving bevel gear 18 to rotate, under the limitation of the cross fixed frame 9, the driving bevel gear 18 drives the transmission bevel gear 19 and the stirring rod 20 to rotate, then the stirring blades 21 start to stir the low-salt and dilute wastewater, such stirring not only helps to uniform the water quality, but also enables the organic matters, microorganisms and chemical agents in the low-salt and dilute wastewater to fully contact, so as to promote the biochemical reaction to proceed and improve the biodegradability of the wastewater, the stirring blades 21 are provided with a plurality of guide holes, which can reduce the resistance during stirring, thereby improving the stirring efficiency.

[0026] Working principle: in use, the low-salt and dilute wastewater enters the adjusting tank 1 through the wastewater inlet pipe 8, the adjusting tank 1 can utilize the neutralization capacity of different low-salt and dilute wastewater itself to control the pH value of the low-salt and dilute wastewater, thereby reducing the consumption of chemicals in the neutralization process, at the same time, the adjusting tank 1 can reduce the flow fluctuation of the low-salt and dilute wastewater entering the physical and chemical treatment system, so that the feeding rate of the chemicals used in the treatment of wastewater is stable and suitable for the capacity of the feeding equipment; after being treated by the adjusting tank 1, the low-salt and dilute wastewater enters the sedimentation tank 2 through the liquid pumping mechanism 7, the sedimentation tank 2 removes the impurities such as suspended particles, colloids and algae with a density greater than water from the low-salt and dilute wastewater by gravity sedimentation, thereby improving the clarity and quality of the low-salt and dilute wastewater; then the low-salt and dilute wastewater enters the D-type filter tank 3 through the liquid pumping mechanism 7, the fiber filter material in the D-type filter tank 3 can significantly remove impurities such as suspended solids, colloids and organic matter in the low-salt and dilute wastewater, thereby improving the water quality; the treated low-salt and dilute wastewater enters the ultrafiltration treatment mechanism 4 through the long pipe 22, the low-salt and dilute wastewater first passes through the impurity filter cylinder 23 in the ultrafiltration treatment mechanism 4, the impurity filter cylinder 23 can remove large-particle impurities in the low-salt and dilute wastewater in advance, so as to avoid the large-particle impurities from being blocked in the pipeline, then the low-salt and dilute wastewater enters the tubular ultrafiltration membrane filter cylinder 24 for ultrafiltration treatment, the ultrafiltration treatment shell removes the suspended solids, colloids and macromolecular organic matter impurities in the wastewater; then the low-salt and dilute wastewater enters the reverse osmosis treatment mechanism 5 through the wastewater guide pipe 25, the reverse osmosis treatment can be used to remove the dissolved ions and micro-particles in the wastewater, so as to obtain high-purity water, thereby achieving the expected treatment effect and meeting the discharge standard.

[0027] The stirring mechanism 6 not only helps to uniform water quality, but also enables the organic matter, microorganism and chemical agent in the low-salt dilute wastewater to fully contact, thereby promoting the biochemical reaction to proceed and improving the biodegradability of the wastewater, the guide holes formed on the stirring blade 21 can reduce the resistance during stirring, thereby improving the stirring efficiency, during use, the stirring motor 10 is started, the transmission shaft of the stirring motor 10 drives the driving bevel gear 11 to rotate, under the cooperation of the cooperating bevel gear 13, the four groups of driven bevel gears 12 start to rotate, under the limitation of the supporting block 17, the driven bevel gears 12 drive the transmission rod 14 and the driving bevel gear 18 to rotate, under the limitation of the cross-shaped fixing frame 9, the driving bevel gear 18 drives the transmission bevel gear 19 and the stirring rod 20 to rotate, then the stirring blade 21 starts to stir the low-salt dilute wastewater.

[0028] It should be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0029] Although the embodiments of the present application have been shown and described, it is to be understood that for the purpose of the present application, the embodiments change, modify, replace, and vary in many ways without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A low-salinity wastewater treatment and reuse device, comprising an equalization tank (1), a sedimentation tank (2), a D-type filter (3), an ultrafiltration treatment unit (4), and a reverse osmosis treatment unit (5), characterized in that: The ultrafiltration treatment mechanism (4) consists of a tubular ultrafiltration membrane filter cartridge (24) and several impurity filter cartridges (23). The reverse osmosis treatment mechanism (5) consists of a reverse osmosis membrane filter cartridge (26) and a booster pump (27). A stirring mechanism (6) is installed in the regulating tank (1). A liquid pumping mechanism (7) is installed between the regulating tank (1) and the sedimentation tank (2), and between the sedimentation tank (2) and the D-type filter tank (3).

2. The low-salinity wastewater treatment and reuse device according to claim 1, characterized in that: Wastewater inlet pipe (8) is fixedly installed on the regulating tank (1). The pumping mechanism (7) includes a sewage pump (28). The inlet end of the sewage pump (28) is fixedly connected to an inlet pipe (30), and the outlet end of the sewage pump (28) is fixedly connected to an outlet pipe (29). The wastewater outlet end of the regulating tank (1) is fixedly connected to the outlet pipe (29) on one of the pumping mechanisms (7). The wastewater inlet end of the sedimentation tank (2) is fixedly connected to the inlet pipe (30) on one of the pumping mechanisms (7). 0) Fixed connection, the wastewater outlet of the sedimentation tank (2) is fixedly connected to the outlet pipe (29) on another set of pumping mechanisms (7), the wastewater inlet of the D-type filter (3) is fixedly connected to the outlet pipe (29) on another set of pumping mechanisms (7), the wastewater outlet of the D-type filter (3) is connected to the ultrafiltration treatment mechanism (4) through a long pipe (22), and the outlet of the ultrafiltration treatment mechanism (4) is fixedly connected to the reverse osmosis treatment mechanism (5) through a wastewater conduit (25).

3. The low-salinity wastewater treatment and reuse device according to claim 1, characterized in that: The stirring mechanism (6) includes a cross-shaped fixing frame (9), which is fixedly installed on the regulating tank (1). A support column (16) is fixedly connected to the bottom of the cross-shaped fixing frame (9). The bottom of the support column (16) is fixedly connected to the bottom of the regulating tank (1). A support frame (31) is fixedly installed on the cross-shaped fixing frame (9). A stirring motor (10) is fixedly installed on the support frame (31). A drive bevel gear (11) is fixedly fitted on the drive shaft of the stirring motor (10). A short shaft (15) is fixedly installed on the cross-shaped fixing frame (9). A matching bevel gear (13) is rotatably fitted on the short shaft (15).

4. The low-salinity wastewater treatment and reuse device according to claim 3, characterized in that: Four sets of support blocks (17) are fixedly installed on the cross-shaped fixing frame (9). A transmission rod (14) is rotatably installed on the support block (17). A driven bevel gear (12) and a driving bevel gear (18) are fixedly fitted at both ends of the transmission rod (14). The driven bevel gear (12) meshes with the driving bevel gear (11) and the cooperating bevel gear (13). Four sets of stirring rods (20) are rotatably installed on the cross-shaped fixing frame (9). A transmission bevel gear (19) is fixedly fitted at the upper end of the stirring rod (20). The transmission bevel gear (19) meshes with the driving bevel gear (18). The bottom of the stirring rod (20) is rotatably connected to the bottom of the regulating tank (1). Several stirring blades (21) are fixedly installed on the side of the stirring rod (20).

5. The low-salinity wastewater treatment and reuse device according to claim 1, characterized in that: The tubular ultrafiltration membrane filter cartridge (24) is equipped with an ultrafiltration membrane filter element, the reverse osmosis membrane filter cartridge (26) is equipped with an anti-seepage membrane filter element, and the purified water outlet end of the reverse osmosis membrane filter cartridge (26) is connected to a purified water outlet pipe.

6. The low-salinity wastewater treatment and reuse device according to claim 4, characterized in that: The stirring blade (21) has several guide holes, and the stirring blade (21) is made of plastic blade.

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