Degradation system

Abstract

The utility model discloses a degradation system, and relates to the field of degradation treatment. In the degradation system, an inlet device is connected with a water source to be treated and is used for conveying wastewater; the uniform distribution device is connected with the inlet device through a pipeline and is used for uniformly distributing wastewater; the air entraining device is used for inputting reaction gas; the NTP reaction device is respectively connected with the uniform distribution device and the air entraining device through pipelines, and is used for degrading the wastewater based on reaction gas by adopting an NTP technology; the absorption device is connected with the NTP reaction device through a pipeline and is used for absorbing a medium in the degraded wastewater; the outlet device is connected with the absorption device through a pipeline and is used for discharging the treated wastewater; the exhaust device is respectively connected with the air entraining device, the NTP reaction device and the absorption device through pipelines and is used for exhausting reaction waste gas. According to the application, degradation-resistant organic pollutants such as environmental endocrine disruptors and antibiotics contained in wastewater can be effectively decomposed, the water treatment efficiency is improved, and the water treatment cost is reduced.

Description

Technical Field

[0001] The present application relates to the field of degradation treatment, and in particular to a degradation system. Background Art

[0002] Wastewater discharged from the production of pesticides, industrial chemicals, personal care products, plastics, food and beverage additives, pharmaceuticals, and dyes primarily contains persistent organic pollutants such as environmental endocrine disruptors (EEDs) and antibiotics, posing significant risks to the environment and human health. Traditional wastewater treatment methods, such as advanced oxidation processes combined with biological methods, struggle to effectively degrade these organic compounds, resulting in reduced treatment efficiency, increased costs, and heightened risks. Summary of the Invention

[0003] The purpose of this application is to provide a degradation system that can effectively decompose difficult-to-degrade organic pollutants such as environmental endocrine disruptors and antibiotics contained in wastewater, improve water treatment efficiency and reduce water treatment costs.

[0004] To achieve the above objectives, this application provides the following solutions:

[0005] In a first aspect, the present application provides a degradation system, comprising:

[0006] An inlet device, connected to the water source to be treated, for conveying wastewater;

[0007] a uniform distribution device connected to the inlet device pipeline and used for uniformly distributing the wastewater;

[0008] An air bleed device, used to input reaction gas;

[0009] An NTP reaction device is connected to the uniform distribution device and the air entrainment device pipeline respectively, and is used to use NTP technology to degrade the wastewater based on the reaction gas;

[0010] An absorption device connected to the NTP reaction device pipeline, used to absorb the medium in the degraded wastewater; the medium includes: NTP particles, intermediates and reaction waste gas;

[0011] an outlet device connected to the absorption device pipeline for discharging the treated wastewater;

[0012] The exhaust device is respectively connected to the air introduction device, the NTP reaction device and the absorption device pipeline, and is used to discharge the reaction waste gas.

[0013] Optionally, the degradation system further comprises:

[0014] A pressure stabilizing device is provided on the connecting pipeline between the inlet device and the uniform distribution device, and is used to stabilize the pressure of the wastewater transported by the inlet device.

[0015] Optionally, the degradation system further comprises:

[0016] A detection device is electrically connected to the inlet device, the voltage stabilizing device, the NTP reaction device, the exhaust device and the outlet device, and is used to detect degradation information; the degradation information includes: the temperature of each device, the conductivity during the degradation process, and the pH value of the wastewater before and after degradation.

[0017] Optionally, the degradation system further comprises:

[0018] The safety protection device is electrically connected to the air bleed device, the exhaust device, the NTP reaction device and the voltage stabilizing device respectively, and is used to monitor whether there is a safety fault in the air bleed device, the exhaust device, the NTP reaction device and the voltage stabilizing device, and generate an alarm message if a safety fault occurs.

[0019] Optionally, the degradation system further comprises:

[0020] A cooling device is respectively connected to the air entrainment device and the NTP reaction device pipeline, and is electrically connected to the detection device, and is used to cool the NTP reaction device and the reaction gas discharged by the NTP reaction device; the detection device is used to detect the temperature of the cooling device.

[0021] Optionally, the degradation system further comprises:

[0022] A buffer device is provided on the connecting pipeline between the NTP reaction device and the absorption device, and is used for buffering the degraded wastewater discharged from the NTP reaction device.

[0023] According to the specific embodiments provided in this application, this application has the following technical effects:

[0024] The present application provides a degradation system that, by adopting a uniform distribution device, can ensure a consistent supply in the NTP reaction device and improve water treatment efficiency. The NTP reaction device is used, and NTP technology is used to degrade wastewater based on reaction gas. An absorption device is used to further absorb the medium in the degraded wastewater, which can effectively decompose the environmental endocrine disruptors contained in the wastewater. By connecting the exhaust device to the air entrainment device, the reaction waste gas discharged by the exhaust device can be re-input into the air entrainment device for utilization, thereby reducing water treatment costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0026] Figure 1 A schematic diagram of the structure of a degradation system provided in this application;

[0027] Figure 2 A schematic flow chart of an application method of a degradation system provided in this application;

[0028] Figure 3 Schematic diagram of the effect of NTC on paracetamol removal rate with the assistance of H2O2 provided for this application;

[0029] Figure 4 Schematic diagram of the effect of NTC on the removal rate of diclofenac sodium with the assistance of H2O2 provided in this application;

[0030] Figure 5 Schematic diagram of the effect of NTP on 2,4-DCP removal under different conditions provided in this application;

[0031] Figure 6 Schematic diagram of chlorophenol removal rate under NTP provided in this application;

[0032] Figure 7 Schematic diagram of chlorophenol mineralization rate under NTP provided in this application;

[0033] Figure 8 Schematic diagram of tetracycline removal rate under NTP provided in this application;

[0034] Figure 9 Schematic diagram of oxytetracycline removal rate under NTP provided in this application;

[0035] Figure 10 Schematic diagram of the degradation rate of different polyacrylamides under the action of NTP provided in this application. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0037] Non-thermal plasma (NTP) contains a large number of high-energy electrons, ions, and excited particles, which are separated by electromagnetic fields into high-density, high-flux electron beams or ion beams. NTP has anisotropic energy distribution, and in particular, the active atmosphere composed of particles in an excited state (including atoms, molecular fragments, ions, radicals, excimers, etc.) provides activation energy for chemical reactions and can quickly and efficiently decompose large molecular organic pollutants that are difficult to degrade.

[0038] The application of NTP technology in the industrial treatment of difficult-to-degrade wastewater and the development of its equipment is a new technology for rapidly treating high-COD wastewater containing large molecular difficult-to-degrade organic matter.

[0039] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the present application is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0040] After the NTP reactor introduces ionized gas (such as air), it generates high-energy particles under the action of the high-voltage circuit, which reacts rapidly with the organic matter in the sewage entering the reactor to achieve chain scission decomposition of the organic matter. Based on this NTP technology principle, this application provides a degradation system, such as Figure 1 As shown, the degradation system includes: an inlet device, a uniform distribution device, an air entrainment device, an NTP reaction device, an absorption device, an outlet device and an exhaust device.

[0041] The inlet device is connected to the source of water to be treated and is primarily used to transport wastewater. The distribution device is connected to the inlet device pipeline and is primarily used to uniformly distribute the wastewater to ensure a consistent supply to each reactor in the NTP reactor. The air inlet device is primarily used to input reaction gas so that the gas can be introduced into the NTP reactor. The NTP reactor is connected to the distribution device and the air inlet device pipelines, respectively. The NTP reactor is primarily used to degrade wastewater using NTP technology based on reaction gas. The absorption device is connected to the NTP reactor pipeline and is primarily used to absorb media in the degraded wastewater, for example, unreacted NTP high-energy particles, intermediates, and reaction exhaust gases. The outlet device is connected to the absorption device pipeline and is primarily used to discharge treated wastewater. The exhaust device is connected to the air inlet device, the NTP reactor, and the absorption device pipelines, respectively, and is primarily used to discharge reaction exhaust gases. In addition, the exhaust device can balance the internal pressure of the reactors in the NTP reactor by controlling the exhaust volume. Furthermore, by connecting the exhaust device to the air introduction device, the reaction waste gas discharged from the exhaust device can be input into the air introduction device again for utilization, thereby reducing the water treatment cost.

[0042] In another exemplary embodiment of the present application, the NTP reaction device includes a high-voltage electrode, an inorganic non-metallic material medium, a grounding port, and an atomizing device. The high-voltage electrode is used to ionize the gas medium to produce NTP high-energy particles. The inorganic non-metallic material medium serves as a dielectric barrier for the NTP and also as a reactor. The grounding port primarily utilizes high-voltage grounding to prevent electric shock or leakage. The atomizing device is used to ensure uniform distribution of wastewater in the reactor while increasing the contact surface.

[0043] Furthermore, the high-voltage electrodes can be externally connected without insulating dielectrics, using a non-metallic dielectric. The non-metallic dielectric used is made of silicon oxide or aluminum oxide, and the effective working distance of this dielectric is no greater than 26 mm. The high-voltage electrodes in the NTP reactor are connected in parallel.

[0044] In another exemplary embodiment of the present application, a particle filter may be further provided at the inlet of the inlet device to filter the input reaction gas.

[0045] In another exemplary embodiment of the present application, in order to ensure the stability of the output pressure of the water source to be treated, the degradation system provided by the present application may further include: a pressure stabilizing device.

[0046] The pressure stabilizing device is arranged on the connecting pipeline between the inlet device and the uniform distribution device, and is used to stabilize the pressure of the wastewater transported by the inlet device.

[0047] In actual application, in this embodiment, a constant water head can be used as a pressure stabilizing device to stabilize the pressure.

[0048] In another exemplary embodiment of the present application, in order to be able to detect the degradation status and the operating status of each device in real time, the degradation system provided by the present application may further include: a detection device.

[0049] The detection device is electrically connected to the inlet device, voltage stabilizing device, NTP reaction device, exhaust device and outlet device, and is mainly used to detect degradation information such as the temperature of each device, the conductivity during the degradation process, and the pH value of the wastewater before and after degradation.

[0050] In actual application, the detection components in the detection device can be installed on the uniform distribution device, the absorption device and the outlet device respectively.

[0051] In another exemplary embodiment of the present application, in order to provide safety alarms or handle situations such as overpressure, circuit failure, misoperation, and idling, the degradation system provided by the present application may further include: a safety protection device.

[0052] The safety protection device is electrically connected to the air bleed device, exhaust device, NTP reaction device and voltage stabilizing device respectively. It is mainly used to monitor whether there is a safety fault in the air bleed device, exhaust device, NTP reaction device and voltage stabilizing device. If there is a safety fault, an alarm message is generated.

[0053] In another exemplary embodiment of the present application, in order to cool the internal devices of the NTP degradation system, especially the NTP reaction device, the degradation system provided by the present application may further include: a cooling device.

[0054] The cooling device is connected to the air bleed system and the NTP reactor via pipelines, and is electrically connected to the detection device. The cooling device's outlet is also connected to the air bleed system's inlet. The cooling device primarily cools the NTP reactor and the reaction gases exhausted from it. The detection device is used to monitor the cooling device's temperature.

[0055] In actual application, the number of outlets of the cooling device may be no less than 2, and correspondingly, the number of inlets of the air bleed device also needs to be no less than 2.

[0056] In another exemplary embodiment of the present application, in order to ensure the stability of the liquid level and thus the flow rate, the degradation system provided by the present application may further include: a buffer device to serve as a buffer medium for the water body after treatment by the NTP reaction device.

[0057] The buffer device is arranged on the connecting pipeline between the NTP reaction device and the absorption device, wherein the buffer device is communicated with the outlet of the NTP reaction device.

[0058] In another exemplary embodiment of the present application, a mobile device can be provided to make the degradation system provided by the present application a degradation device with high decomposition efficiency, high energy efficiency ratio and flexible mobility.

[0059] In another exemplary embodiment of the present application, the present application provides an application method of a degradation system, such as Figure 2 As shown, the method includes:

[0060] Step 200: The wastewater is processed by the uniform distribution device and the air entrainment device into a water film with a thickness not exceeding a set thickness, for example, the set thickness is 7 mm.

[0061] Step 201: In the NTP reactor, the water film is degraded using NTP technology at a set power to produce degradation products. The degradation products include degraded wastewater and reaction exhaust gas. For example, the set power can be converted to 1.0-60.0 gTOC / kWh.

[0062] Step 202: Cool the reaction waste gas through a cooling device and use it as a reaction gas source for the air bleed device.

[0063] Step 203: The degraded wastewater is absorbed by an absorption device and then discharged.

[0064] In another exemplary embodiment of the present application, the process of treating refractory organic matter with a water content greater than 65% by using the degradation system provided above is as follows:

[0065] (1) The refractory organic matter to be treated is processed into a water film with a thickness not exceeding 7 mm through a uniform distribution device and an air entrainment device.

[0066] (2) The refractory organic matter to be treated is decomposed and treated by the NTP reaction device, and the NTP power design is converted according to 1.0-60.0g TOC / kWh.

[0067] (3) The treatment products formed by decomposition (i.e., degradation products) pass through the buffer device and are discharged into the absorption device.

[0068] (4) The exhaust gas from the reactor cooling and reaction is used as the gas source for the air induction device. The excess gas enters the absorption device for purification.

[0069] Furthermore, hydrogen peroxide, percarbonate, etc. can be added during the above treatment process to increase the number of NTP high-energy particles and improve the degradation effect.

[0070] The time for the above treatment using the degradation system shall not exceed 60 minutes.

[0071] like Figure 3 and Figure 4 As shown in the figure, the effect of NTC on TOC removal efficiency with the assistance of H2O2 can be obtained. Under the conditions of power of 4.7gTOC / kWh and treatment time of 60min, with appropriate assistance of H2O2, NTP can effectively degrade paracetamol (10mg / L) and diclofenac sodium (10mg / L).

[0072] like Figure 5 As shown in the figure, under the conditions of power of 30.0 g TOC / kWh and treatment time of 30 min, the degradation rate of 2,4-dichlorophenol (50 mg / L) by NTP can be as high as 80%. Figure 5 In the figure, lines of different colors from top to bottom indicate that the concentration of 2,4-DCP increases successively.

[0073] like Figure 6 and Figure 7 As shown in the figure, when the power is 10.0 g TOC / kWh and the treatment time is 10 min, NTP can remove 100% of chlorophenol (300 mg / L). After 20 min, the degradation rate of chlorophenol (300 mg / L) can be as high as 80%. Figure 6 and Figure 7 In the figure, lines of different colors from top to bottom indicate increasing concentrations of chlorophenols.

[0074] like Figure 8 and Figure 9 As shown in the figure, at a power of 60.0 g TOC / kWh and a treatment time of 10 min, NTP can remove 100% of tetracycline (50 mg / L) and oxytetracycline (50 mg / L). The TOC removal rate exceeds 40%. Figure 8 In the figure, lines of different colors from top to bottom indicate increasing concentrations of tetracycline. Figure 9 In the figure, lines of different colors from top to bottom indicate increasing concentrations of oxytetracycline.

[0075] like Figure 10 The degradation rates of different polyacrylamides under NTP are shown as follows: at a power of 1.0 gTOC / kWh and a treatment time of 10 min, NTP can remove more than 80% of different types of polyacrylamides (1 g / L). Under optimized conditions, the degradation rate can reach as high as 92%. Figure 10 Among them, PAM is non-ionic polyacrylamide, HPAM is anionic polyacrylamide, and CPAM is cationic polyacrylamide.

[0076] In summary, this application is based on the high energy density and strong oxidation ability of NTP, and the medium treated is not only organic wastewater containing specific COD.

[0077] Those skilled in the art will understand that all or part of the processes in the above-mentioned embodiment methods can be implemented by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, database or other media used in the embodiments provided in this application may include at least one of non-volatile and volatile memory. Non-volatile memory may include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory may include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM may be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM).

[0078] The databases involved in the various embodiments provided herein may include at least one of a relational database and a non-relational database. Non-relational databases may include, but are not limited to, distributed databases based on blockchains. The processors involved in the various embodiments provided herein may include, but are not limited to, general-purpose processors, central processing units, graphics processing units, digital signal processors, programmable logic units, data processing logic units based on quantum computing, and the like.

[0079] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0080] This document uses specific examples to illustrate the principles and implementation methods of this application. The description of the above examples is only intended to help understand the method and core concept of this application. At the same time, for those skilled in the art, based on the concept of this application, there may be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting this application.

Claims

1. A degradation system, characterized in that: The degradation system comprises: An inlet device, connected to the water source to be treated, for conveying wastewater; a uniform distribution device connected to the inlet device pipeline and used for uniformly distributing the wastewater; An air bleed device, used to input reaction gas; An NTP reaction device is connected to the uniform distribution device and the air entrainment device pipeline respectively, and is used to use NTP technology to degrade the wastewater based on the reaction gas; An absorption device connected to the NTP reaction device pipeline, used to absorb the medium in the degraded wastewater; the medium includes: NTP particles, intermediates and reaction waste gas; an outlet device connected to the absorption device pipeline for discharging the treated wastewater; The exhaust device is respectively connected to the air introduction device, the NTP reaction device and the absorption device pipeline, and is used to discharge the reaction waste gas.

2. The degradation system according to claim 1, characterized in that: The degradation system further comprises: A pressure stabilizing device is provided on the connecting pipeline between the inlet device and the uniform distribution device, and is used to stabilize the pressure of the wastewater transported by the inlet device.

3. The degradation system according to claim 2, characterized in that: The degradation system further comprises: A detection device is electrically connected to the inlet device, the voltage stabilizing device, the NTP reaction device, the exhaust device and the outlet device, and is used to detect degradation information; the degradation information includes: the temperature of each device, the conductivity during the degradation process, and the pH value of the wastewater before and after degradation.

4. The degradation system according to claim 3, characterized in that: The degradation system further comprises: The safety protection device is electrically connected to the air bleed device, the exhaust device, the NTP reaction device and the voltage stabilizing device respectively, and is used to monitor whether there is a safety fault in the air bleed device, the exhaust device, the NTP reaction device and the voltage stabilizing device, and generate an alarm message if a safety fault occurs.

5. The degradation system according to claim 3, characterized in that: The degradation system further comprises: A cooling device is respectively connected to the air entrainment device and the NTP reaction device pipeline, and is electrically connected to the detection device, and is used to cool the NTP reaction device and the reaction gas discharged by the NTP reaction device; the detection device is used to detect the temperature of the cooling device.

6. The degradation system according to claim 1, characterized in that: The degradation system further comprises: A buffer device is provided on the connecting pipeline between the NTP reaction device and the absorption device, and is used for buffering the degraded wastewater discharged from the NTP reaction device.

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