CN217449667U

CN217449667U - Membrane group backwashing device of membrane system

Info

Publication number: CN217449667U
Application number: CN202221140540.6U
Authority: CN
Inventors: 池学聪; 江涛; 陈拥军
Original assignee: Shanghai Panda Machinery Group Co Ltd
Current assignee: Shanghai Panda Machinery Group Co Ltd
Priority date: 2022-05-12
Filing date: 2022-05-12
Publication date: 2022-09-20
Anticipated expiration: 2032-05-12

Abstract

The utility model relates to a membrane group backwashing device of a membrane system, which comprises a plurality of membrane groups and a main pipeline which are arranged in a membrane pool, wherein each membrane group is provided with a water inlet pipeline, a water production pipeline and a backwashing pipeline; the membrane module of normal water production will purify the water after delivering to the main line through self water production pipeline, the main line is carried some water to the user side to carry another part water to the backwash pipeline that needs to carry out the membrane module backwash, realize wasing the membrane module that needs the backwash. The utility model discloses the realization can be energy-conserving festival consume when to the membrane group abluent.

Description

Membrane group backwashing device of membrane system

Technical Field

The utility model relates to a water treatment technical field especially relates to a membrane system's membrane group backwash device.

Background

With the development of human beings and the progress of society, the water treatment technology is rapidly developed; with the popularization of high-quality drinking water, the membrane technology is rapidly developed in drinking water treatment. However, membrane technology is becoming increasingly smaller in flux during use, requiring frequent backwashing. The existing backwashing is mostly water washing which is matched with a backwashing water tank, security filtration, a backwashing pump and the like, so that the equipment occupies large area, has high investment cost and is not energy-saving. With the proposal of the national double-carbon strategy, the quality improvement, efficiency increase, cost reduction and energy conservation become necessary; thus, considering an economically efficient backwash scheme, the need is urgent.

The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a membrane group backwashing device of membrane system is provided, realize can energy-conservation festival consume when organizing abluent to the membrane.

The utility model provides a technical scheme that its technical problem adopted is: the membrane group backwashing device of the membrane system comprises a plurality of membrane groups and a main pipeline which are arranged in a membrane pool, wherein each membrane group is provided with a water inlet pipeline, a water production pipeline and a backwashing pipeline; the membrane module of normal water production will purify the water after delivering to the main line through the water production pipeline of self, the main line is delivered some water to the user side to deliver another part water to the backwash pipeline that needs to carry out the membrane module backwash, realize wasing needs backwash membrane module.

And a flow regulating valve is arranged between one end of the main pipeline and the user side.

And a pressure regulating valve is arranged between the other end of the main pipeline and the backwashing pipeline of each membrane group.

Each membrane module is provided with a drainage pipeline, and the drainage pipeline is used for outwards discharging sewage after the membrane module is washed.

And the water inlet pipeline, the water production pipeline and the backwashing pipeline of the membrane module are all provided with valves for opening and closing.

The membrane group is an ultrafiltration membrane or a microfiltration membrane.

Advantageous effects

Since the technical scheme is used, compared with the prior art, the utility model, have following advantage and positive effect: the utility model makes full use of the water produced by the membrane group which normally produces water to backwash the membrane group which needs to be cleaned, thereby effectively saving the cost investment of the backwash water tank and the backwash pump, saving the working power consumption of the backwash pump and realizing the economy; the utility model discloses a flow control valve and pressure regulating valve have ensured that the backwash of membrane group is gone on in safe pressure condition and steady flow condition, have higher reliability.

Drawings

FIG. 1 is a schematic structural diagram of a membrane module backwashing device of a membrane system of a first embodiment;

FIG. 2 is a schematic structural diagram of a membrane module backwashing device of a membrane system according to a second embodiment.

The figure is as follows: 1. the system comprises a water pump, a membrane pool, 11, a first membrane group, 12, a second membrane group, 13, a third membrane group, 14, a fourth membrane group, 21, a first water production valve, 22, a second water production valve, 23, a third water production valve, 24, a fourth water production valve, 31, a first water inlet valve, 32, a second water inlet valve, 33, a third water inlet valve, 41, a first backwashing valve, 42, a second backwashing valve, 43, a third backwashing valve, 44, a fourth backwashing valve, 51, a first water discharge valve, 52, a second water discharge valve, 53, a third water discharge valve, 6, a flow regulating valve, 7 and a pressure regulating valve.

Detailed Description

The present invention will be further described with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that various changes and modifications of the present invention may be made by those skilled in the art after reading the teachings of the present invention, and these equivalents also fall within the scope of the appended claims.

The utility model discloses an embodiment relates to a membrane group backwash device of membrane system, please refer to fig. 1 (the arrow represents rivers or air current direction), for first embodiment, including setting up three membrane group (first membrane group 11, second membrane group 12, third membrane group 13) and main pipe, every the membrane group all is provided with inlet channel, product water pipeline, backwash pipeline and drainage pipe to inlet channel, product water pipeline, backwash pipeline and drainage pipe all are provided with the valve that is used for the switch. Specifically, a water inlet pipeline of the first membrane group 11 is provided with a first water inlet valve 31, a water production pipeline is provided with a first water production valve 21, a backwashing pipeline is provided with a first backwashing valve 41, and a water discharge pipeline is provided with a first water discharge valve 51; the water inlet pipeline of the second membrane module 12 is provided with a second water inlet valve 32, the water production pipeline is provided with a second water production valve 22, the backwashing pipeline is provided with a second backwashing valve 42, and the water drainage pipeline is provided with a second water drainage valve 52; the water inlet pipeline of the third membrane module 13 is provided with a third water inlet valve 33, the water production pipeline is provided with a third water production valve 23, the backwashing pipeline is provided with a third backwashing valve 43, and the drainage pipeline is provided with a third drainage valve 53; the drain valve may be an adjustable proportional valve or an on-off valve.

Each membrane group receives a water source to be purified through a water inlet pipeline, a water production pipeline of each membrane group is communicated with a main pipeline, one end of the main pipeline is communicated with a user side (namely a water production tank in figure 1), and the other end of the main pipeline is communicated with a backwashing pipeline of each membrane group; the membrane group of normal water production will purify the water after delivering to the main line through self water production pipeline, the main line is carried some water to the user side to carry another part water to the backwash pipeline that needs to carry out membrane group backwash, realize wasing the membrane group that needs the backwash, and after wasing, the membrane group that is washd outwards discharges sewage through self drainage pipe.

A flow regulating valve 6 is arranged between one end of the main pipeline and the user end, the flow regulating valve 6 is a regulating valve, the valve regulating opening degree of the regulating valve can be 0-100%, and the flow regulating valve 6 can be an on-off valve or a flow limiting valve; and a pressure regulating valve 7 is arranged between the other end of the main pipeline and the backwashing pipeline of each membrane group, and the pressure regulating valve 7 can be an adaptive pressure regulating valve or a manual regulating valve.

The membrane group can be an ultrafiltration membrane or a microfiltration membrane, can be a tubular membrane or an immersed membrane, and can be an organic membrane or an inorganic membrane.

The operation principle of the first embodiment will be described in detail by taking the water-producing backwash third membrane module 13 of the first membrane module 11 and the second membrane module 12 as an example: the first water inlet valve 31 and the second water inlet valve 32 are communicated, the third water inlet valve 33 is disconnected, the first water production valve 21 and the second water production valve 22 are communicated, the third water production valve 23 is disconnected, the first drain valve 51 and the second drain valve 52 are disconnected, the third drain valve 53 is communicated, the first backwashing valve 41 and the second backwashing valve 42 are disconnected, and the third backwashing valve 43 is communicated. The flow regulating valve 6 is used for regulating the backwashing flow, and the pressure regulating valve 7 is used for regulating the backwashing process to be in a safe pressure condition, so that the water produced by the first membrane group 11 and the second membrane group 12 is formed for backwashing the third membrane group 13.

Referring to fig. 2 (arrows represent water flow or air flow directions), a second embodiment includes a water pump 1, a membrane tank 2 and a main pipe, the membrane tank 2 is communicated with the main pipe through the water pump 1, a first membrane group 11, a second membrane group 12, a third membrane group 13 and a fourth membrane group 14 are disposed in the membrane tank 2, and for convenience of describing a backwashing situation, a water inlet pipe and a water outlet pipe of each membrane group are omitted in the second embodiment. Specifically, the water production pipeline of the first membrane module 11 is provided with a first water production valve 21, and the backwashing pipeline is provided with a first backwashing valve 41; the water production pipeline of the second membrane module 12 is provided with a second water production valve 22, and the backwashing pipeline is provided with a second backwashing valve 42; the water production pipeline of the third membrane module 13 is provided with a third water production valve 23, and the backwashing pipeline is provided with a third backwashing valve 43; the water production pipeline of the fourth membrane module 14 is provided with a fourth water production valve 24, and the backwashing pipeline is provided with a fourth backwashing valve 44; the water produced by each membrane group in the membrane pool 2 is communicated with a main pipeline through a water pump 1, and the main pipeline is respectively communicated with a user side and a backwashing pipeline of each membrane group; preferably, a flow regulating valve 6 is arranged between one end of the main pipeline and the user end, and a pressure regulating valve 7 is arranged between the other end of the main pipeline and the backwashing pipeline of each membrane group.

The working principle of the second embodiment will be described in detail by taking the water-producing backwash fourth membrane module 14 of the first membrane module 11, the second membrane module 12 and the third membrane module 13 as an example: the first water production valve 21, the second water production valve 22 and the third water production valve 23 are connected, the fourth water production valve 24 is disconnected, the first backwashing valve 41, the second backwashing valve 42 and the third backwashing valve 43 are disconnected, and the fourth backwashing valve 44 is connected. The water pump 1 pumps water from a water production pipeline of normal water supply and provides a part of the water for a user end, meanwhile, the water pump 1 enables the other part of the water to flow through a backwashing pipeline through a main pipeline and enter a membrane group to be cleaned, the flow regulating valve 6 is used for regulating backwashing flow, and the pressure regulating valve 7 is used for regulating the backwashing process to be in a safe pressure condition, so that a water production backwashing fourth membrane group 14 of a first membrane group 11, a second membrane group 12 and a third membrane group 13 is formed.

Therefore, the utility model fully utilizes the membrane group of normal water production to backwash the membrane group to be cleaned, saves the cost investment of the backwash water tank and the backwash pump, saves the work power consumption of the backwash pump, and realizes the economy; the backwashing of the membrane module is ensured to be carried out under the conditions of safe pressure and stable flow through the flow regulating valve and the pressure regulating valve, and the membrane module backwashing device has higher reliability.

The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application, to thereby enable others skilled in the art to make and utilize various exemplary embodiments of the invention and various alternatives and modifications. It is intended that the scope of the invention be defined by the claims and their equivalents.

Claims

1. A membrane group backwashing device of a membrane system is characterized by comprising a plurality of membrane groups and a main pipeline which are arranged in a membrane pool, wherein each membrane group is provided with a water inlet pipeline, a water production pipeline and a backwashing pipeline; the membrane module of normal water production will purify the water after delivering to the main line through self water production pipeline, the main line is carried some water to the user side to carry another part water to the backwash pipeline that needs to carry out the membrane module backwash, realize wasing the membrane module that needs the backwash.

2. The membrane system membrane module backwashing apparatus of claim 1, wherein a flow control valve is provided between one end of the main conduit and a user side.

3. A membrane module backwash device according to claim 1 wherein a pressure regulating valve is provided between the other end of the main conduit and the backwash conduit of each said membrane module.

4. The membrane system backwashing device according to claim 1, wherein each of the membrane modules is provided with a drain pipe for discharging the sewage after membrane module backwashing to the outside.

5. Membrane module backwashing apparatus according to claim 1, characterized in that the membrane module inlet, outlet and backwash pipes are provided with valves for switching.

6. A membrane module backwash device according to claim 1 characterised in that the membrane module is an ultrafiltration membrane or a microfiltration membrane.