Open type degassing membrane element

Abstract

The utility model relates to the technical field of environmental protection, in particular to an open type degassing membrane element. According to the open type degassing membrane element, a plurality of degassing membrane row assemblies are installed on a frame, each degassing membrane row assembly comprises an acid inlet secondary pipeline and an acid outlet secondary pipeline, degassing membrane wires are installed between the acid inlet secondary pipelines and the acid outlet secondary pipelines, the acid inlet secondary pipelines communicate with an acid inlet main pipeline, and the acid inlet main pipeline communicates with an acid outlet main pipeline; the acid inlet secondary pipeline is communicated with an acid inlet main pipeline, the acid outlet secondary pipeline is communicated with an acid outlet main pipeline, the acid inlet main pipeline and the acid outlet main pipeline are respectively arranged outside the frame, and an aeration pipeline is arranged at the bottom of the frame, so that a shell is not needed, the degassing membrane element is directly immersed in a sewage pool for degassing treatment, and the occupied area and the energy consumption of equipment are reduced.

Description

Technical Field

[0001] This utility model relates to the field of environmental protection technology, specifically to an open-type degassing membrane element. Background Technology

[0002] NH4 + Removal from wastewater is a challenge. After the CN content is consumed in the biochemical reaction, the remaining NH4... + Even reverse osmosis has a low removal rate. The traditional method is to add alkali to the wastewater to reduce NH4+. + The NH3 is converted into gaseous NH3, which is then removed using ammonia stripping or stripping techniques. NH4 is removed from water using a degassing membrane. + It has become a new application technology. Its degassing membrane structure is as follows: Figure 1 As shown.

[0003] The degassing membrane element has a hollow fiber column structure, with the hollow fiber membrane fibers inside the element and a plastic outer shell. There are two openings on the end cap. The water inlet / outlet is on the end face, and the acid inlet / outlet is on the side. Raw water enters from one end face, flows into the membrane shell cavity, and after making full contact with the membrane fibers, the deammoniation solution flows out from the other end face. Acid flows in from one side inlet, with sulfuric acid flowing inside the membrane fibers. Ammonia gas in the raw water permeates through the membrane, reaches the inside of the membrane fibers, and combines with sulfuric acid to form ammonium sulfate, which then flows out from the other side outlet.

[0004] However, this degassing membrane element has the following disadvantages: 1. Due to the limitation of the element shell, the area of ​​a single membrane is limited, i.e., the treatment capacity is limited. 2. The flow channel space is small, making it prone to fouling, and requiring high standards for raw water pretreatment. 3. Each membrane requires a matching membrane shell, resulting in high manufacturing costs. 4. Due to its sealed structure, if a membrane fiber breaks, it cannot be repaired, and the entire membrane loses its degassing function.

[0005] In view of this, this application proposes an open-structure degassing membrane element without a shell to solve the above problems. Utility Model Content

[0006] The purpose of this invention is to solve at least one of the technical problems existing in the prior art and to provide an open degassing membrane element.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows: An open-type degassing membrane element includes a frame, on which a plurality of degassing membrane assembly components are installed. Each degassing membrane assembly includes an acid inlet secondary pipe and an acid outlet secondary pipe. Degassing membrane fibers are installed between the acid inlet secondary pipe and the acid outlet secondary pipe. An acid inlet main pipe is connected to the acid inlet secondary pipe, and an acid outlet main pipe is connected to the acid outlet secondary pipe. The acid inlet main pipe and the acid outlet main pipe are respectively located outside the frame. An aeration pipe is provided at the bottom of the frame.

[0008] Furthermore, the degassed membrane filaments are hollow.

[0009] Furthermore, the degassed membrane filaments are made of hydrophobic PP or hydrophobic PVDF material.

[0010] Furthermore, the main acid inlet pipe is located below the frame.

[0011] Furthermore, the acid outlet main pipe is located above the frame and is arranged opposite to the acid inlet main pipe.

[0012] Furthermore, the other ends of both the acid inlet secondary pipe and the acid outlet secondary pipe are connected to the frame.

[0013] Furthermore, the main acid inlet pipe, the main acid outlet pipe, the secondary acid inlet pipe, and the secondary acid outlet pipe are all made of corrosion-resistant plastic material.

[0014] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0015] 1. This application utilizes a frame to install several degassing membrane assembly components, each including an acid inlet secondary pipe and an acid outlet secondary pipe. Degassing membrane fibers are installed between the acid inlet secondary pipe and the acid outlet secondary pipe. An acid inlet main pipe is connected to the acid inlet secondary pipe, and an acid outlet main pipe is connected to the acid outlet secondary pipe. The acid inlet main pipe and the acid outlet main pipe are respectively located outside the frame. An aeration pipe is provided at the bottom of the frame. This allows the degassing membrane element to be directly immersed in the wastewater tank for degassing treatment without an outer shell, reducing the equipment's footprint and energy consumption.

[0016] 2. The membrane array structure of this application is simple, easy to install and replace, and has a wide range of adjustable throughput. The throughput can be increased by increasing the number of components used. Since no outer shell is required, the replacement cost is relatively low in the future, and it is less prone to fouling. Even if some membrane fibers are damaged, they can be directly repaired. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the degassing membrane structure in the background technology.

[0018] Figure 2 This is a schematic diagram of the structure of the open-type degassing membrane element in a preferred embodiment of the present invention;

[0019] Figure 3 This is a schematic diagram of the degassing membrane discharge assembly in a preferred embodiment of the present invention.

[0020] Attached reference numerals: 1. Acid outlet secondary pipe; 2. Degassing membrane fiber; 3. Acid inlet secondary pipe; 4. Aeration pipe; 5. Acid outlet main pipe; 6. Frame; 7. Acid inlet main pipe. Detailed Implementation

[0021] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments.

[0022] Reference Figures 2-3 As shown in the preferred embodiment of this utility model, an open-type degassing membrane element includes a frame 6. A plurality of degassing membrane assembly units are installed on the frame 6. Each degassing membrane assembly includes an acid inlet secondary pipe 3 and an acid outlet secondary pipe 1. Degassing membrane fibers 2 are installed between the acid inlet secondary pipe 3 and the acid outlet secondary pipe 1. An acid inlet main pipe 7 is connected to the acid inlet secondary pipe 3, and an acid outlet main pipe 5 is connected to the acid outlet secondary pipe 1. The acid inlet main pipe 7 and the acid outlet main pipe 5 are respectively located outside the frame 6. An aeration pipe 4 is provided at the bottom of the frame 1. This allows the degassing membrane element to be directly immersed in the wastewater tank for degassing treatment without an outer shell, reducing the equipment's footprint and energy consumption.

[0023] As a preferred embodiment of this utility model, it may also have the following additional technical features: the degassing membrane filament 2 is made of hydrophobic PP or hydrophobic PVDF material to form a hollow structure, thereby facilitating the removal of ammonia nitrogen.

[0024] In this embodiment, the acid inlet main pipe 7 is located below the frame 6; the acid outlet main pipe 5 is located above the frame 6 and is arranged opposite to the acid inlet main pipe 7. This achieves the removal of ammonia nitrogen from wastewater.

[0025] In this embodiment, the other ends of both the acid inlet secondary pipe 3 and the acid outlet secondary pipe 1 are connected to the frame 1. This enhances the stability of the degassing membrane assembly.

[0026] In this embodiment, the main acid inlet pipe 7, the main acid outlet pipe 8, the secondary acid inlet pipe 3, and the secondary acid outlet pipe 1 are all made of corrosion-resistant plastic. This prevents corrosion of the pipes.

[0027] The working principle of this invention is as follows: Multiple membrane assembly modules are assembled and fixed onto the frame 6. These modules can be quickly disassembled or added according to the required treatment capacity. The acid inlet and outlet pipes of the membrane assembly are connected to the corresponding main pipes, and an aeration pipe 4 is installed at the bottom of the frame, thus forming an open degassing membrane element. This degassing membrane element's main pipe is connected to an external pipe, allowing it to be placed in the wastewater tank requiring ammonia removal for ammonia nitrogen removal. If a membrane fiber in a particular membrane assembly is found to be broken, it can be repaired individually.

[0028] Without causing conflict, those skilled in the art can freely combine and use the above-mentioned additional technical features.

[0029] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. An open degassing membrane element characterized by: The application relates to a frame, wherein a plurality of degassing membrane row assemblies are arranged on the frame, the degassing membrane row assembly comprises an acid inlet sub-pipe and an acid outlet sub-pipe, a degassing membrane wire is arranged between the acid inlet sub-pipe and the acid outlet sub-pipe, an acid inlet main pipe is communicated with the acid inlet sub-pipe, an acid outlet main pipe is communicated with the acid outlet sub-pipe, the acid inlet main pipe and the acid outlet main pipe are arranged outside the frame respectively, and an aeration pipe is arranged at the bottom of the frame.

2. The open-degassing membrane element of claim 1, wherein: The degassing membrane wire is in a hollow shape.

3. The open-degassing membrane element of claim 2, wherein: The material of the degassing membrane wire is hydrophobic PP or hydrophobic PVDF material.

4. The open-degassing membrane element of claim 1, wherein: The acid inlet main pipe is arranged below the frame.

5. The open-degassing membrane element of claim 4, wherein: The acid outlet main pipe is arranged above the frame and is arranged opposite to the acid inlet main pipe.

6. The open-degassing membrane element of claim 1, wherein: The other ends of the acid inlet sub-pipe and the acid outlet sub-pipe are connected with the frame respectively.

7. The open-degassing membrane element of claim 1, wherein: The acid inlet main pipe, the acid outlet main pipe, the acid inlet sub-pipe and the acid outlet sub-pipe are made of anticorrosive plastic material.

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