CN214571003U

CN214571003U - Energy-saving curtain type membrane stack

Info

Publication number: CN214571003U
Application number: CN202022590266.XU
Authority: CN
Inventors: 周杰; 程杨明; 杨芳; 汪朝晖; 汪效祖; 崔朝亮
Original assignee: Nanjing Jiuying Membrane Technologies Co ltd
Current assignee: Nanjing Jiuying Membrane Technologies Co ltd
Priority date: 2020-11-11
Filing date: 2020-11-11
Publication date: 2021-11-02
Anticipated expiration: 2030-11-11

Abstract

The utility model relates to a curtain-type membrane stack technical field relates to an energy-saving curtain-type membrane stack. The method comprises the following steps: a frame; the mounting guide rail is positioned at the top of the frame and used for mounting the hollow fiber membrane module; the upper layer water collecting pipe and the lower layer water collecting pipe are respectively positioned at the upper part and the lower part of the frame, are respectively connected with two ends of the membrane filaments in the hollow fiber membrane component and are used for collecting produced water; the first aeration pipe group and the second aeration pipe group are positioned at the bottom of the frame and are respectively used for aeration to the outside; the first aeration pipe group and the second aeration pipe group are both composed of a plurality of aeration pipes; and the first air inlet and the second air inlet are respectively connected with the first aeration pipe group and the second aeration pipe group and are used for feeding gas into the aeration pipe groups. Compared with the traditional whole aeration mode at the bottom of the membrane frame, the aeration mode can save 30 to 50 percent of aeration energy consumption cost and corresponding fixed asset construction cost of a fan, a field and the like for manufacturers.

Description

Energy-saving curtain type membrane stack

Technical Field

The utility model relates to a curtain-type membrane stack technical field relates to an energy-saving curtain-type membrane stack.

Background

With the popularization of membrane technology in water treatment applications, Membrane Bioreactor (MBR) technology is increasingly used. Has the advantages of small occupied area, excellent effluent quality, easy automation and the like. There are also problems associated with the practical use of membrane bioreactors. Such as high energy consumption and membrane pollution. The problem of high energy consumption mainly comes from the constant aeration of the membrane stack in the system operation. The aeration aims at mainly: 1. the airflow drives water flow to wash, so that concentration polarization is reduced, and membrane pollution is slowed down; 2. the sludge in the membrane tank is provided with oxygen required by biochemical process so as to maintain high sludge concentration in operation.

For manufacturers who do not limit the site, the problem of aeration energy consumption also limits the popularization of the technology. Therefore this patent provides an energy-saving curtain formula membrane stack (membrane module installation forms the membrane stack after going into the membrane frame), has saved the aeration energy consumption of the part in the MBR use, reduces the operation cost to promote the high-efficient utilization of MBR technique. The aeration quantity is saved, and simultaneously the investment of corresponding aeration devices, control equipment, fields and other fixed assets can be correspondingly reduced.

Disclosure of Invention

Aiming at the problem of high aeration energy consumption of the existing membrane bioreactor. The invention provides an energy-saving membrane stack. On the premise of achieving the aim of reducing membrane pollution by the same aeration scouring, the aeration energy consumption can be reduced by 20-30%. Meanwhile, the matched aeration equipment can be reduced, and the construction and operation cost is reduced. In addition, the membrane stack provided by the utility model patent can also be used in the immersion type ultrafiltration process.

An energy-efficient curtain-type membrane stack comprising:

a frame;

the mounting guide rail is positioned at the top of the frame and used for mounting the hollow fiber membrane module;

the upper layer water collecting pipe and the lower layer water collecting pipe are respectively positioned at the upper part and the lower part of the frame, are respectively connected with two ends of the membrane filaments in the hollow fiber membrane component and are used for collecting produced water;

the first aeration pipe group and the second aeration pipe group are positioned at the bottom of the frame and are respectively used for aeration to the outside; the first aeration pipe group and the second aeration pipe group are both composed of a plurality of aeration pipes;

and the first air inlet and the second air inlet are respectively connected with the first aeration pipe group and the second aeration pipe group and are used for feeding gas into the aeration pipe groups.

The aeration pipes in the first aeration pipe group and the second aeration pipe group are respectively arranged on two sides of the bottom of the frame.

The aeration pipes in the first aeration pipe group and the second aeration pipe group are arranged in a mutually crossed way.

The size of the aeration hole in the aeration pipe is 2-5 mm.

The end of the aeration pipe is provided with a detachable screw plug.

The upper layer water collecting pipe and the lower layer water collecting pipe are connected to the main water outlet.

The lower layer water collecting pipe is connected with the main water outlet through a lower layer water outlet pipe.

Advantageous effects

Compared with the traditional whole aeration mode at the bottom of the membrane frame, the aeration mode can save 30 to 50 percent of aeration energy consumption cost and corresponding fixed asset construction cost of a fan, a field and the like for manufacturers.

Drawings

Fig. 1 is a frame structure view of a curtain film assembly of the present invention.

Fig. 2 is a layout structure of a water collecting pipe.

Fig. 3 shows another arrangement of the water collecting pipe.

Wherein, 1-a first aeration pipe group; 2-a second aeration tube group; 3-water outlet; 4-lower layer water outlet pipe; 5-1-upper layer water collecting pipe; 5-2-lower layer water collecting pipe; 6-a frame; 7-hoisting rings; 8, installing a guide rail; 9-a first air inlet; 10-a second air inlet; 11-aeration pipe support.

Detailed Description

The utility model provides an energy-saving curtain formula membrane stack does not influence under the membrane uses the prerequisite, through the aeration that distributes in order to save the aeration rate, reaches energy-saving purpose.

Fig. 1 shows a curtain film frame in its entirety. Comprises a frame body, an aeration part and a water production part which form a curtain type membrane frame whole.

The frame 6 provides integral support and connection. A plurality of installation guide rails 8 are arranged at the top of the frame 6, and a plurality of membrane modules can be installed on the installation guide rails 8 in the subsequent process; meanwhile, a clamping groove is arranged on the installation guide rail 8. When the membrane assembly is installed, the connecting piece arranged on the membrane assembly slides into the installation opening on the water collecting pipe through the clamping groove.

The water producing part mainly comprises a total water outlet 3, an upper layer water collecting pipe 5-1, a lower layer water collecting pipe 5-2 and a lower layer water outlet pipe 4 which form a whole. The upper layer water collecting pipe 5-1 and the lower layer water collecting pipe 5-2 are respectively positioned at the upper part and the lower part of the frame 6 and are respectively connected with two ends of hollow fiber membrane filaments in the membrane component, membrane component mounting connecting ports are arranged on the upper layer water collecting pipe and the lower layer water collecting pipe, the connecting ports can be directly connected, and the membrane component is sealed through an O-shaped ring after being mounted. The connecting port can also be set as a screw thread, and the membrane component is connected and sealed with the mounting port through a loose joint.

In the figure, a first aeration pipe group 1 and a second aeration pipe group 2 are respectively arranged at the bottom of a frame 6, the aeration pipe groups are composed of a plurality of aeration pipes, a first air inlet 9 and a second air inlet 10 are respectively arranged on the frame 6, the first air inlet 9 and the second air inlet 10 are respectively communicated with the first aeration pipe group 1 and the second aeration pipe group 2 and are used for supplying air into the aeration pipe groups, and the aeration system is divided into two groups of mutually independent aeration groups.

After air sources enter from the first air inlet 9 and the second air inlet 10, air is respectively fed and aerated through the corresponding set of aeration pipes as shown by arrows in the figure. Fig. 2 and 3 show different aeration modes, respectively. FIG. 2 shows a single-side aeration mode, wherein the aeration pipes in the first aeration pipe group 1 and the second aeration pipe group 2 are respectively arranged at two sides of the bottom of the frame 6, the membrane components on the corresponding aeration pipes are respectively subjected to aeration washing, and an aeration pipe is arranged below every 3-5 curtain-type membranes on average. As shown in fig. 3, the two groups of aeration pipes are arranged in a whole and mutually crossed manner. And respectively carrying out aeration scouring on the membrane components corresponding to the aeration pipes.

The aeration branch pipe is a perforated aeration pipe with a plurality of aeration holes, the size of the aeration holes is 2-5mm, and the orientation of the aeration holes is inclined downwards by 35-45 degrees. As shown in fig. 3, the root of the aeration pipe is provided with a screw thread to connect with the screw thread plug 12. The purpose of the plug is to unscrew the plug when the aeration pipe is blocked by sludge, and to enter air from the air inlet to sweep the sludge deposited in the aeration pipe. The membrane frame can be recycled, and the overall cost is saved.

For the membrane holder shown in fig. 2 and 3, when the membrane holder is actually used, the manufacturer can use two air inlets (the first air inlet 9 and the second air inlet 10). The corresponding 2-way branch can be provided with valves such as an electric valve or a pneumatic valve. When one of the valves is opened, the other valve can be closed to alternately intake air in sequence, so as to achieve the aeration effect. Compared with the traditional whole aeration mode at the bottom of the membrane frame, the aeration mode can save 30 to 50 percent of aeration energy consumption cost and corresponding fixed asset construction cost of a fan, a field and the like for manufacturers.

Meanwhile, the membrane frame shown in fig. 3 is very suitable for the project of upgrading and transforming the water works, and the traditional sewage plant upgrading and transforming can not increase extra aeration quantity. When the curtain type ultrafiltration membrane is used for upgrading and reconstruction, a manufacturer introduces an air source into the membrane stack from the front aeration fan. And closing one path of air inlet, and carrying out integral aeration on the membrane stack through only one path of air inlet. Can avoid the situation that the membrane stack can not be aerated in water due to insufficient aeration quantity and generated water pressure, and has the advantages of saving extra aeration quantity and flexible application.

The membrane assembly is arranged in the membrane frame to form an integral membrane stack. The air inlet and the water outlet on the membrane stack are connected with a corresponding water production device required by a manufacturer for use.

Claims

1. An energy-efficient curtain-type membrane stack, comprising:

a frame (6);

the mounting guide rail (8) is positioned at the top of the frame (6) and is used for mounting the hollow fiber membrane module;

the upper layer water collecting pipe (5-1) and the lower layer water collecting pipe (5-2) are respectively positioned at the upper part and the lower part of the frame (6), are respectively connected with two ends of membrane filaments in the hollow fiber membrane component and are used for collecting produced water;

a first aeration pipe group (1) and a second aeration pipe group (2) which are positioned at the bottom of the frame (6) and are respectively used for aeration to the outside; the first aeration pipe group (1) and the second aeration pipe group (2) are both composed of a plurality of aeration pipes;

and the first air inlet (9) and the second air inlet (10) are respectively connected with the first aeration pipe group (1) and the second aeration pipe group (2) and are used for feeding gas into the aeration pipe groups.

2. The energy-saving curtain membrane stack of claim 1, comprising: the aeration pipes in the first aeration pipe group (1) and the second aeration pipe group (2) are respectively arranged at two sides of the bottom of the frame (6).

3. The energy-saving curtain membrane stack of claim 1, comprising: the aeration pipes in the first aeration pipe group (1) and the second aeration pipe group (2) are arranged in a mutually crossed way.

4. The energy-saving curtain membrane stack of claim 1, comprising: the size of the aeration hole in the aeration pipe is 2-5 mm.

5. The energy-saving curtain membrane stack of claim 1, comprising: the end part of the aeration pipe is provided with a detachable screw thread plug (12).

6. The energy-saving curtain membrane stack of claim 1, comprising: the upper layer water collecting pipe (5-1) and the lower layer water collecting pipe (5-2) are connected with the main water outlet (3).

7. The energy-saving curtain membrane stack of claim 1, comprising: the lower layer water collecting pipe (5-2) is connected with the main water outlet (3) through a lower layer water outlet pipe (4).