Membrane concentrated liquid treatment system

Abstract

The utility model provides a membrane concentrated liquid treatment system and belongs to the technical field of catalytic ozonation. Comprising an oxygen supply module; the ozone generation module is connected with the oxygen supply module; the ozone delivery modules are connected with the ozone generation module; the ozone reaction module is connected with the plurality of ozone delivery modules; the ozone reaction module comprises a plurality of catalytic oxidation ponds; the ozone generation module is used for generating ozone, the ozone delivery modules are used for dissolving the ozone into a membrane concentrated solution, each ozone delivery module is connected with one catalytic oxidation pond, and the membrane concentrated solution dissolved with the ozone is guided into the catalytic oxidation pond. Ozone and membrane concentrated liquor are mixed and reacted in a plurality of catalytic oxidation ponds, and the membrane concentrated liquor is thoroughly oxidized and degraded into carbon dioxide and water, so that the technical problem that the membrane concentrated liquor subjected to biodegradation and reverse osmosis membrane treatment after landfill cannot be thoroughly degraded is solved. Meanwhile, the system is low in investment cost, low in equipment requirement and high in economic benefit.

Description

Technical Field

[0001] The utility model relates to the technical field of ozone catalytic oxidation, in particular to a membrane concentrate processing system. Background Art

[0002] In order to reduce the impact of solid waste on production and life, the main treatment methods currently include incineration, composting and landfilling, among which landfilling is the most widely used and mature treatment method. However, landfilling will produce a large amount of leachate, the water quality of which varies greatly, and the content of organic matter, heavy metals and ammonia nitrogen is high, which seriously pollutes the surrounding environment and the subsoil layer of the landfill.

[0003] The landfill leachate will form membrane concentrate after biodegradation and reverse osmosis membrane interception. This part of membrane concentrate is very difficult to treat, and the methods used in the prior art include external transportation, re-injection, setting up a secondary membrane treatment system, and evaporation. The above existing methods are all transfer or reduction, which cannot completely solve the pollution problem. Utility Model Content

[0004] The utility model provides a membrane concentrate treatment system, which solves the technical problem that the membrane concentrate after biodegradation after landfill and reverse osmosis membrane cannot be completely degraded.

[0005] To solve the above technical problems, the technical solution of this novel invention is as follows:

[0006] A membrane concentrate treatment system, comprising:

[0007] Oxygen supply module;

[0008] an ozone generating module connected to the oxygen supply module;

[0009] a plurality of ozone delivery modules connected to the ozone generating module;

[0010] an ozone reaction module connected to the plurality of said ozone delivery modules;

[0011] The ozone reaction module includes a plurality of catalytic oxidation tanks;

[0012] The ozone generating module produces ozone, and the ozone delivery module dissolves ozone into the membrane concentrate. Each of the ozone delivery modules is connected to a catalytic oxidation tank, and the membrane concentrate dissolved with ozone is introduced into the catalytic oxidation tank.

[0013] Optionally, the oxygen supply module includes an oxygen source;

[0014] a vaporizer connected to the oxygen source;

[0015] A pressure reducing valve group connected to the vaporizer.

[0016] Optionally, the ozone generating module includes an ozone generator, a plate heat exchange unit connected to the ozone generator, a high-voltage line connected to the ozone generator, and an electrical automatic control system;

[0017] The input end of the ozone generator is connected to the pressure reducing valve group, and the output end of the ozone generator is connected to a plurality of the ozone delivery modules.

[0018] Optionally, the ozone delivery module includes a dosing device;

[0019] A first end of an ozone input pipe and a first end of a membrane concentrate input pipe connected to an input end of the dosing device;

[0020] An output conduit connected to the output end of the dosing device, wherein a first end of the output conduit is connected to the output end of the dosing device, and a diffusion device is disposed at a second end of the output conduit.

[0021] Optionally, the second end of the membrane concentrate inlet pipe extends into the catalytic oxidation tank;

[0022] The second end of the ozone input tube is connected to the output end of the ozone generator;

[0023] The membrane concentrate inlet pipe is provided with a lift pump.

[0024] Optionally, a water inlet and a water outlet are respectively provided at both ends of the ozone reaction module;

[0025] A plurality of partitions and a plurality of guide plates are arranged between the water inlet and the water outlet;

[0026] The partitions and the guide plates are arranged alternately;

[0027] The height of the partition is greater than that of the guide plate;

[0028] The partition divides the ozone reaction module into a plurality of catalytic oxidation tanks of the same structure;

[0029] A water outlet is provided at the bottom of the partition;

[0030] An air guide hole is arranged on the top of the ozone reaction module and close to the water outlet.

[0031] Optionally, the catalytic oxidation tank is divided into a reaction tank and a water outlet area by the guide plate;

[0032] A catalytic reaction layer is provided in the reaction pool;

[0033] The catalytic reaction layer comprises a long-handled filter head layer, a supporting layer and a catalyst layer in sequence from bottom to top.

[0034] Optionally, the second end of the output conduit extends into the water outlet area;

[0035] The second end of the membrane concentrate inlet pipe extends into the water outlet area.

[0036] Optionally, the membrane concentrate treatment system further includes a backwash blower module;

[0037] The backwash fan module includes a backwash fan and an air duct connected to the backwash fan;

[0038] One end of the air guide pipe is connected to the backwash fan, and the other end of the air guide pipe is connected to the bottom of the catalytic oxidation tank;

[0039] The air guide pipe is provided with a plurality of air valve switches.

[0040] Optionally, the membrane concentrate treatment system further includes an ozone destruction system;

[0041] The ozone destruction system includes an ozone tail gas degrader;

[0042] The input end of the ozone tail gas degrader is connected to the air guide hole through an ozone tail gas conduit.

[0043] The above solution of the utility model includes at least the following beneficial effects:

[0044] The above scheme of the utility model includes: an oxygen supply module; an ozone generation module connected to the oxygen supply module; a plurality of ozone delivery modules connected to the ozone generation module; an ozone reaction module connected to the plurality of ozone delivery modules; the ozone reaction module includes a plurality of catalytic oxidation tanks; the ozone generation module produces ozone, the ozone delivery module dissolves ozone into the membrane concentrate, each of the ozone delivery modules is connected to a catalytic oxidation tank, and the membrane concentrate dissolved with ozone is introduced into the catalytic oxidation tank. By mixing ozone and membrane concentrate in a plurality of catalytic oxidation tanks, the membrane concentrate is completely oxidized and degraded into carbon dioxide and water, thereby solving the technical problem that the membrane concentrate cannot be completely degraded after biodegradation after landfill and after reverse osmosis membrane. At the same time, the investment cost of using this system is low, the equipment requirements are low, and the economic benefits are high. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 It is a schematic diagram of the structure of the membrane concentrate treatment system of the utility model;

[0046] Description of reference numerals:

[0047] 1. Oxygen supply module; 11. Oxygen source; 12. Vaporizer; 13. Pressure reducing valve group; 2. Ozone generating module; 21. Ozone generator; 22. Plate heat exchanger; 23. High-voltage line; 24. Electrical automatic control system; 31. Dosing device; 32. Ozone input pipe; 33. Membrane concentrate input pipe; 35. Output duct; 36. Lifting pump; 37. Diffusion equipment; 41. Catalytic oxidation tank; 42. Water inlet; 43. Water outlet; 44. Baffle; 441. Water outlet; 45. Guide plate; 451. Reaction tank; 452. Water outlet area; 453. Long-handled filter head layer; 454. Support layer; 455. Catalyst layer; 46. Air guide hole; 51. Backwash fan; 52. Air guide pipe; 53. Air valve switch; 6. Ozone destruction system; 61. Ozone tail gas degrader; 62. Ozone tail gas duct. DETAILED DESCRIPTION

[0048] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0049] like Figure 1 As shown, the embodiment of the utility model provides a membrane concentrate treatment system, comprising:

[0050] Oxygen supply module 1;

[0051] An ozone generating module 2 connected to the oxygen supply module 1;

[0052] A plurality of ozone delivery modules connected to the ozone generating module 2;

[0053] an ozone reaction module connected to the plurality of said ozone delivery modules;

[0054] The ozone reaction module includes a plurality of catalytic oxidation tanks 41;

[0055] The ozone generating module 2 produces ozone, and the ozone delivery module dissolves ozone into the membrane concentrate. Each of the ozone delivery modules is connected to a catalytic oxidation tank 41 to introduce the membrane concentrate dissolved with ozone into the catalytic oxidation tank 41 .

[0056] In the above embodiment, the oxygen supply module 1 serves to provide oxygen for the ozone generating module 2. The ozone generating module 2 can produce ozone by a high-voltage ionization method, and mix the produced ozone with membrane concentrate through multiple ozone delivery modules and then pass it into multiple catalytic oxidation tanks 41. The catalytic oxidation tank 41 is provided with a catalytic oxidation device. The multiple catalytic oxidation tanks 41 are arranged in series. The membrane concentrate can undergo ozone reaction in the multiple catalytic oxidation tanks 41 in sequence, and finally degrade into carbon dioxide and water after reacting in the multiple catalytic oxidation tanks 41 in sequence.

[0057] The membrane concentrate treatment system of the utility model realizes the production of ozone. By mixing ozone and membrane concentrate in multiple catalytic oxidation tanks, the membrane concentrate is completely oxidized and degraded into carbon dioxide and water, solving the technical problem that the membrane concentrate after biodegradation after landfill and after reverse osmosis membrane cannot be completely degraded. At the same time, the investment cost of using the system is low, the equipment requirements are low, and the economic benefits are high.

[0058] In an optional embodiment of the present invention, the oxygen supply module 1 includes an oxygen source 11 ; a vaporizer 12 connected to the oxygen source 11 ; and a pressure reducing valve group 13 connected to the vaporizer 12 .

[0059] In this embodiment, the oxygen source 11 can use liquid oxygen, pressure swing adsorption oxygen generator (PSA), low-pressure adsorption vacuum desorption oxygen generator (VPSA) and other oxygen making or supplying equipment as the oxygen source 11 of the ozone generating module 2 to play the role of continuous oxygen supply.

[0060] The vaporizer 12 serves to vaporize the liquid oxygen provided by the oxygen source 11 , and the pressure reducing valve group 13 serves to adjust the higher gas pressure in the vaporizer 12 to the gas pressure required by the ozone generating module 2 , and to control the vaporizer 12 to output a stable gas pressure.

[0061] In an optional embodiment of the present utility model, the ozone generating module 2 includes an ozone generator 21, a plate heat exchange unit 22 connected to the ozone generator 21, a high-voltage line 23 connected to the ozone generator 21, and an electrical automatic control system 24;

[0062] The input end of the ozone generator 21 is connected to the pressure reducing valve group 13, and the output end of the ozone generator 21 is connected to the plurality of ozone delivery modules.

[0063] like Figure 1As shown, in this embodiment, ozone is prepared by electrolysis in the ozone generator 21, and the pressure reducing valve group 13 is connected to the input end of the ozone generator 21 through a pipeline, which can supply oxygen to the ozone generator 21. A high-voltage line 23 is connected to the ozone generator 21, and the other end of the high-voltage line 23 is connected to the ozone power cabinet to supply power to the ozone generator 21. The electrical automatic control system 24 is preferably an editable logic controller, which can control the rate of ozone preparation in the ozone generator 21. The ozone generator 21 is also provided with a plate heat exchanger unit 22, which plays a role in maintaining the temperature in the ozone generator 21.

[0064] In an optional embodiment of the present utility model, the ozone delivery module includes a dosing device 31; a first end of an ozone input pipe 32 connected to the input end of the dosing device 31 and a first end of a membrane concentrate input pipe 33; an output conduit 35 connected to the output end of the dosing device 31, wherein the first end of the output conduit 35 is connected to the output end of the dosing device 31, and the second end of the output conduit 35 is provided with a diffusion device 37.

[0065] In an optional embodiment of the present invention, the second end of the membrane concentrate inlet pipe 33 extends into the catalytic oxidation tank 41 ; the second end of the ozone inlet pipe 32 is connected to the output end of the ozone generator 21 ; and a lift pump 36 is provided on the membrane concentrate inlet pipe 33 .

[0066] like Figure 1 As shown, in the above two embodiments, the first end of the ozone input pipe 32 is connected to the output end of the ozone generator 21, and the second end is connected to the input end of the dosing device, so as to pass the ozone into the dosing device. The first end of the membrane concentrate input pipe 33 is connected to the input end of the dosing device, and the second end is connected to the catalytic oxidation tank 41, so that the membrane concentrate or the liquid that has been fully reacted in the previous catalytic oxidation tank 41 can be sucked into the dosing device, and then mixed with ozone in the dosing device and passed into the next catalytic oxidation tank 41 through the dosing device, so as to continuously dissolve ozone into the membrane concentrate and the liquid that has been fully reacted in the previous catalytic oxidation tank 41, thereby improving the reaction effect.

[0067] Since the second end of the output conduit 35 needs to be inserted into the liquid in the catalytic oxidation tank 41 , a diffusion device 37 needs to be provided at the second end of the output conduit 35 so that the liquid in the output conduit 35 can be injected into the next-stage catalytic oxidation tank 41 .

[0068] The membrane concentrate inlet pipe 33 is provided with a lift pump 36 to extract the membrane concentrate or the liquid fully reacted in the previous catalytic oxidation tank 41 from the catalytic oxidation tank 41 and inject it into the dosing device.

[0069] The dosing device is provided with a filter to filter the ozone passing into the filter.

[0070] In an optional embodiment of the present invention, a water inlet 42 and a water outlet 43 are respectively provided at both ends of the ozone reaction module; a plurality of partitions 44 and a plurality of guide plates 45 are provided between the water inlet 42 and the water outlet 43; the partitions 44 and the guide plates 45 are arranged alternately; the height of the partitions 44 is greater than that of the guide plates 45; the partitions 44 divide the ozone reaction module into a plurality of catalytic oxidation pools 41 of the same structure; a water through port 441 is provided at the bottom of the partition 44; an air guide hole 46 is provided at the top of the ozone reaction module and near the water outlet 43. In an optional embodiment of the present invention, the catalytic oxidation pool 41 is divided into a reaction pool 451 and a water outlet area 452 by the guide plates 45; a catalytic reaction layer is provided in the reaction pool 451; the catalytic reaction layer includes a long-handled filter head layer 453, a supporting layer 454 and a catalyst layer 455 from bottom to top.

[0071] In the above two optional embodiments, the water inlet 42 is arranged at one end of the ozone reaction module, and a conduit is connected to the outside, so that the membrane concentrate after biodegradation and reverse osmosis membrane interception can be introduced into the ozone reaction module. The water outlet 43 is arranged at the other end of the ozone reaction module, and serves to discharge or reuse the liquid after the reaction in the multiple catalytic oxidation tanks 41.

[0072] like Figure 1As shown, the area between adjacent partitions 44 is a catalytic oxidation pool 41, and multiple catalytic oxidation pools 41 are arranged in series. The guide plate 45 divides the catalytic oxidation pool 41 into a reaction pool 451 and a water outlet area 452. Specifically, the area between the partition 44 and the guide plate 45 in one catalytic oxidation pool 41 is the reaction pool 451, and the area between the guide plate 45 and the partition 44 of the next catalytic oxidation pool 41 is the water outlet area 452. Furthermore, a catalytic reaction layer is provided in the reaction pool 451, and the membrane concentrate or the liquid that has been fully reacted in the previous catalytic oxidation pool 41 first passes through the long-handled filter head layer 453 in the catalytic reaction layer of the next catalytic oxidation pool 41 to evenly distribute water and gas, and then passes through the supporting layer 454 that supports the long-handled filter head layer 453 and the catalyst layer 455. After passing through the support layer 454, the liquid is evenly contacted with the catalyst layer 455, inducing ozone to generate hydroxyl radicals, making the reaction of degrading pollutants faster and more thorough, thus playing a role in more efficiently treating pollutants in the liquid. Since the height of the guide plate 45 is less than that of the partition plate 44, the liquid exceeding the height of the guide plate 45 will flow into the water outlet area 452.

[0073] The membrane concentrate or the liquid that has been fully reacted in the previous catalytic oxidation tank 41 stays in the next catalytic oxidation tank 41 for 30-50 minutes to allow the ozone and the liquid to be fully mixed and reacted. A water inlet 441 is provided at the bottom of the partition 44 to allow the liquid that has been fully reacted in the previous catalytic oxidation tank 41 to flow into the next catalytic oxidation tank 41.

[0074] At least three catalytic oxidation pools 41 are provided in the ozone reaction module. Every three catalytic oxidation pools 41 added can degrade 30% of the chemical oxygen demand. Connecting a plurality of catalytic oxidation pools 41 in series can increase the degradation ratio of the membrane concentrate.

[0075] Furthermore, a plurality of long-handled filter heads are vertically arranged in sequence in the long-handled filter head layer 453, which play the role of distributing water and air. The top of the long-handled filter head is buried in the supporting layer 454, so as to support the long-handled filter head layer 453 and the catalyst layer 455. The supporting layer 454 is composed of pebbles of different diameters, and the diameter range of the pebbles is 8mm-32mm, which plays the role of supporting the catalyst layer 455, fixing the long-handled filter head layer 453 and intercepting pollutants in the solution. The catalyst layer 455 can make the ozone form hydroxyl radicals, which has stronger oxidizing properties, can more effectively degrade pollutants, and play the role of improving the oxidation effect of the catalytic reaction layer.

[0076] The air guide hole 46 is also provided on the top of the ozone reaction module to discharge the ozone that has not been dissolved in the membrane concentrate and the liquid after the full reaction.

[0077] In an optional embodiment of the present invention, the second end of the output conduit 35 extends into the water outlet area 452 ; the second end of the membrane concentrate input pipe 33 extends into the water outlet area 452 .

[0078] like Figure 1 As shown, in the above embodiment, since the second end of the output conduit 35 is located below the liquid level in the water outlet area 452, and the membrane concentrate dissolved with ozone or the liquid after sufficient reaction in the previous catalytic oxidation tank 41 needs to be introduced into the reaction tank 451 of the next catalytic oxidation tank 41, it is necessary to extend the diffusion device 37 into the water outlet area 452 to a position parallel to the water outlet 441.

[0079] During operation, the liquid after the reaction in the catalytic reaction layer flows into the water outlet area 452, and then flows into the next catalytic oxidation tank 41 through the water outlet 441 or flows into the dosing device through the membrane concentrate input pipe 33, and after being dissolved in ozone, enters the next catalytic oxidation tank 41 through the output conduit 35 and the diffusion device 37.

[0080] In an optional embodiment of the utility model, the membrane concentrate treatment system also includes a backwash fan module; the backwash fan module includes a backwash fan 51 and an air duct 52 connected to the backwash fan 51; one end of the air duct 52 is connected to the backwash fan 51, and the other end of the air duct 52 is connected to the bottom of the catalytic oxidation tank 41; a plurality of air valve switches 53 are arranged on the air duct 52.

[0081] like Figure 1 As shown, in the above embodiment, the backwash blower 51 is preferably a Roots blower, which plays a role in accelerating the air flow rate. The air guide pipe 52 includes a main pipe and a plurality of branch pipes connected to the main pipe. The number of the branch pipes is the same as the number of the catalytic oxidation tanks 41 and each branch pipe is provided with an air valve switch 53. One end of each branch pipe is connected to the main pipe, and the other end is connected to the bottom of each reaction tank 451. When in use, the backwash blower 51 is started, the air valve switch 53 on the branch pipe is opened, and air is introduced into the reaction tank 451, which plays a role in cleaning large-diameter suspended matter attached to the catalytic reaction layer through high-speed airflow.

[0082] In an optional embodiment of the present invention, the membrane concentrate treatment system further comprises an ozone destruction system 6 ; the ozone destruction system 6 comprises an ozone tail gas degrader 61 ; the input end of the ozone tail gas degrader 61 is connected to the air guide hole 46 via an ozone tail gas conduit 62 .

[0083] like Figure 1 As shown, in this embodiment, the ozone tail gas degrader 61 is connected to the ozone reaction module through the ozone tail gas duct 62, and can degrade the ozone that is not dissolved in the liquid in the ozone reaction module, and discharge it after degrading it into pollution-free gas, thereby preventing ozone from polluting the environment.

[0084] The above is a preferred embodiment of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A membrane concentrate treatment system, characterized in that: include: Oxygen supply module (1); an ozone generating module (2) connected to the oxygen supply module (1); A plurality of ozone delivery modules connected to the ozone generating module (2); an ozone reaction module connected to the plurality of said ozone delivery modules; The ozone reaction module includes a plurality of catalytic oxidation tanks (41); The ozone generating module (2) produces ozone, and the ozone delivery module dissolves ozone into the membrane concentrate. Each of the ozone delivery modules is connected to a catalytic oxidation tank (41) to introduce the membrane concentrate dissolved with ozone into the catalytic oxidation tank (41).

2. The membrane concentrate treatment system according to claim 1, characterized in that: The oxygen supply module (1) comprises an oxygen source (11); a vaporizer (12) connected to the oxygen source (11); A pressure reducing valve group (13) connected to the vaporizer (12).

3. The membrane concentrate treatment system according to claim 2, characterized in that: The ozone generating module (2) comprises an ozone generator (21), a plate heat exchange unit (22) connected to the ozone generator (21), a high voltage line (23) connected to the ozone generator (21), and an electrical automatic control system (24); The input end of the ozone generator (21) is connected to the pressure reducing valve group (13), and the output end of the ozone generator (21) is connected to the plurality of ozone delivery modules.

4. The membrane concentrate treatment system according to claim 3, characterized in that: The ozone delivery module comprises a dosing device (31); a first end of an ozone input pipe (32) and a first end of a membrane concentrate input pipe (33) connected to the input end of the dosing device (31); An output conduit (35) is connected to the output end of the dosing device (31), wherein a first end of the output conduit (35) is connected to the output end of the dosing device (31), and a diffusion device (37) is provided at a second end of the output conduit (35).

5. The membrane concentrate treatment system according to claim 4, characterized in that: The second end of the membrane concentrate inlet pipe (33) extends into the catalytic oxidation tank (41); The second end of the ozone input pipe (32) is connected to the output end of the ozone generator (21); The membrane concentrate inlet pipe (33) is provided with a lift pump (36).

6. The membrane concentrate treatment system according to claim 5, characterized in that: The ozone reaction module is provided with a water inlet (42) and a water outlet (43) at both ends thereof; A plurality of partitions (44) and a plurality of guide plates (45) are provided between the water inlet (42) and the water outlet (43); The partitions (44) and the guide plates (45) are arranged alternately; The height of the partition plate (44) is greater than that of the guide plate (45); The partition (44) divides the ozone reaction module into a plurality of catalytic oxidation tanks (41) with the same structure; The bottom of the partition (44) is provided with a water opening (441); An air guide hole (46) is provided at the top of the ozone reaction module and close to the water outlet (43).

7. The membrane concentrate treatment system according to claim 6, characterized in that: The catalytic oxidation pool (41) is divided into a reaction pool (451) and a water outlet area (452) by the guide plate (45); A catalytic reaction layer is provided in the reaction pool (451); The catalytic reaction layer comprises, from bottom to top, a long-handled filter head layer (453), a supporting layer (454) and a catalyst layer (455).

8. The membrane concentrate treatment system according to claim 7, characterized in that: The second end of the output conduit (35) extends into the water outlet area (452); The second end of the membrane concentrate inlet pipe (33) extends into the water outlet area (452).

9. The membrane concentrate treatment system according to claim 6, characterized in that: The membrane concentrate treatment system also includes a backwash blower module; The backwash fan module comprises a backwash fan (51) and an air guide pipe (52) connected to the backwash fan (51); One end of the air guide pipe (52) is connected to the backwash fan (51), and the other end of the air guide pipe (52) is connected to the bottom of the catalytic oxidation tank (41); The air guide pipe (52) is provided with a plurality of air valve switches (53).

10. The membrane concentrate treatment system according to claim 6, characterized in that: The membrane concentrate treatment system further comprises an ozone destruction system (6); The ozone destruction system (6) comprises an ozone tail gas degrader (61); The input end of the ozone tail gas degrader (61) is connected to the air guide hole (46) via an ozone tail gas conduit (62).

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