Backwashing system for ultrafiltration equipment

Abstract

The utility model belongs to the technical field of water treatment, and particularly relates to a backwashing system for ultrafiltration equipment, which comprises an ultrafiltration CMF, an ultrafiltration water producing tank and a primary reverse osmosis device which are sequentially connected, water produced by the ultrafiltration CMF flows into the ultrafiltration water producing tank, water produced by the ultrafiltration water producing tank is pressurized by a pressurizing structure and divided into two paths, one path is an ultrafiltration backwashing water source, and the other path is an ultrafiltration backwashing water source; the ultrafiltration backwashing water source supplies water to a membrane backwashing structure of the ultrafiltration CMF after the water pressure and the flow are controlled by a pressure reduction structure, and the ultrafiltration reverse osmosis water source supplies water to the primary reverse osmosis device. After a new ultrafiltration backwashing system is reformed and upgraded, the backwashing effect is obviously improved, pollutants on the surface of a membrane are effectively removed, the permeability and the filtering effect of the membrane are recovered, the service life of the membrane is effectively prolonged, the maintenance cost is reduced, water supply of a backwashing pump is eliminated, direct water supply of the ultrafiltration water production main pipe is changed, electric energy is saved, and due to the reduction of equipment, the cost is reduced. And the maintenance cost is also reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to water treatment technical field especially relates to a kind of backwashing system for ultrafiltration equipment. BACKGROUND

[0002] The backwashing system in the ultrafiltration equipment is crucial for maintaining the normal operation of the equipment and prolonging its service life. The backwashing process helps to remove pollutants accumulated on the surface and pores of the ultrafiltration membrane, preventing membrane pore blockage, thereby maintaining the permeability and separation efficiency of the membrane. Through regular backwashing, the frequency of chemical cleaning can be effectively reduced, maintenance costs can be reduced, and the stability and reliability of the treated water quality can be ensured. Therefore, designing an efficient and reliable backwashing system is an important aspect of ultrafiltration equipment design.

[0003] Although the existing ultrafiltration backwashing technology plays an important role in water treatment, its complexity and drawbacks cannot be ignored. First, the ultrafiltration backwashing process is complex and requires precise control of various parameters, such as backwashing intensity and time, to ensure the backwashing effect. This requires operators to have higher professional knowledge and skills, increasing the difficulty and cost of operation. In addition, the ultrafiltration backwashing technology also has some other drawbacks, such as large equipment investment, high maintenance cost, and large floor area. These problems limit the widespread application and promotion of ultrafiltration backwashing technology. Therefore, it is necessary to provide a backwashing system for ultrafiltration equipment to solve the above technical problems. SUMMARY

[0004] The utility model provides a kind of backwashing system for ultrafiltration equipment to solve the above problems in prior art.

[0005] The technical solution adopted by the utility model to solve this problem is:

[0006] A backwashing system for ultrafiltration equipment, comprising an ultrafiltration CMF, an ultrafiltration water tank and a primary reverse osmosis device connected in sequence. The ultrafiltration CMF produces water and flows into the ultrafiltration water tank. The ultrafiltration water tank produces water and is pressurized by a pressurizing structure to divide into two paths. One path is an ultrafiltration backwashing water source, and the other path is an ultrafiltration reverse osmosis water source. The ultrafiltration backwashing water source supplies water to the membrane backwashing structure of the ultrafiltration CMF after controlling water pressure and flow rate by a pressure reducing structure. The ultrafiltration reverse osmosis water source supplies water to the primary reverse osmosis device.

[0007] In the above technical solution, an ultrafiltration water pipe is connected between the ultrafiltration CMF and the ultrafiltration water tank. A water mother pipe is connected between the ultrafiltration water tank and the primary reverse osmosis device.

[0008] In the above technical solution, the pressurizing structure includes a pressurizing pump arranged on the pipeline of the water mother pipe.

[0009] In the technical scheme, the booster pump is located between the tee joint and the ultrafiltration water tank, and the booster pump is a high-flow water pump.

[0010] In the technical scheme, a tee joint is further arranged on the pipeline of the water mother pipe, and a backwashing inlet pipe is in communication between the tee joint and the ultrafiltration CMF and in communication with the first reverse osmosis device.

[0011] In the technical scheme, the pressure reducing structure comprises a pressure reducing valve and a flow meter arranged on the pipeline of the backwashing inlet pipe.

[0012] In the technical scheme, the flow meter is located between the ultrafiltration CMF and the pressure reducing valve.

[0013] In the technical scheme, the pressure reducing valve comprises two pressure gauges and an adjusting hand wheel.

[0014] In the technical scheme, the inlet pressure of the pressure reducing valve is twice or more than twice of the outlet pressure.

[0015] In the technical scheme, the backwashing inlet pipe is in communication with a membrane backwashing structure of the ultrafiltration CMF, and the membrane backwashing structure adopts one or more of a horizontal flow, a convection flow and a vortex flow to backwash the ultrafiltration membrane.

[0016] Compared with the related art, the backwashing system for the ultrafiltration equipment has the following advantages and positive effects:

[0017] 1. In the utility model, after the new ultrafiltration backwashing system is upgraded, the backwashing effect is obviously improved, the pollutants on the membrane surface are effectively removed, and the permeability and the filtration effect of the membrane are restored.

[0018] 2. In the utility model, the new backwashing mode significantly improves the cleaning efficiency and effect by optimizing the backwashing process and parameters, effectively prolongs the service life of the membrane, and reduces the maintenance cost.

[0019] 3. In the utility model, the new backwashing mode dispenses with the backwashing pump water supply and directly uses the ultrafiltration water mother pipe to supply water, thereby saving electric energy. In addition, the reduction of the equipment also reduces the maintenance cost. BRIEF DESCRIPTION OF DRAWINGS

[0020] The technical scheme of the utility model will be further described below in combination with the drawings and embodiments, but it should be known that the drawings are designed only for the purpose of explanation, and therefore, they cannot be used as the limitation of the scope of the utility model. In addition, unless specifically indicated, the drawings are only intended to conceptually illustrate the structural configuration described herein, and they are not necessarily drawn to scale.

[0021] Figure 1The utility model provides a structure schematic drawing of a backwashing system for ultrafiltration equipment.

[0022] In the drawing: 1, ultrafiltration CMF; 2, flowmeter; 3, backwashing inlet pipe; 4, pressure reducing valve; 5, tee; 6, primary reverse osmosis device; 7, water production mother pipe; 8, booster pump; 9, ultrafiltration water production pool. DETAILED DESCRIPTION

[0023] First of all, it needs to be explained that the specific structure, characteristics and advantages of the utility model will be specifically explained in the following example way, however, all the descriptions are only used for illustration, and should not be understood as forming any limitation on the utility model. In addition, any single technical feature described or implied in each embodiment mentioned in the present paper, or any single technical feature shown or implied in each drawing, can still continue to be combined or deleted between these technical features (or their equivalents), so as to obtain more other embodiments of the utility model that may not be directly mentioned in the present paper. In addition, for the purpose of simplifying the drawing, the same or similar technical features may be marked only in one place in the same drawing.

[0024] In the utility model, unless otherwise explicitly specified and limited, the terms "mounting", "setting", "connecting", "fixing", "screw connection" and other terms should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, it can be the internal communication of two elements or the interaction relationship of two elements, unless otherwise explicitly limited, the above-mentioned terms in the utility model can be understood according to the specific meaning of the above-mentioned terms in the utility model by the person skilled in the art. The utility model will be specifically explained below in combination with the drawings.

[0025] The technical problem to be solved by the utility model lies in that although the existing ultrafiltration backwashing technology plays an important role in water treatment, its complexity and disadvantages cannot be ignored. First of all, the ultrafiltration backwashing process is complex, and it is necessary to accurately control various parameters, such as backwashing intensity and time, to ensure the backwashing effect. This requires that the operator has high professional knowledge and skills, increases the operation difficulty and cost. In addition, the ultrafiltration backwashing technology also has some other disadvantages, such as large equipment investment, high maintenance cost and large floor area. These problems limit the wide application and promotion of the ultrafiltration backwashing technology. In view of the above defects of the prior art, a backwashing system for ultrafiltration equipment is provided. Embodiment 1

[0026] As Figure 1The utility model discloses a backwash system for ultrafiltration equipment, including the ultrafiltration CMF1, the ultrafiltration water pool 9 and the primary reverse osmosis device 6 that connect gradually, the ultrafiltration CMF1 water inflow ultrafiltration water pool 9 after producing, the water of ultrafiltration water pool 9 is divided into two ways after the pressure increasing structure pressurization, one way is the ultrafiltration backwash water source, another way is the ultrafiltration reverse osmosis water source, the ultrafiltration backwash water source supplies water to the membrane backwash structure of ultrafiltration CMF1 after the water pressure and flow of pressure reducing structure control, the ultrafiltration reverse osmosis water source supplies water to the primary reverse osmosis device 6.

[0027] In the embodiment, a backwash system for ultrafiltration equipment includes an ultrafiltration CMF1, a primary reverse osmosis device 6 and an ultrafiltration water pool 9. The ultrafiltration CMF1 is in communication with the ultrafiltration water pool 9. The ultrafiltration water pool 9 collects water from the ultrafiltration CMF1. A water production mother pipe 7 is in communication between the ultrafiltration water pool 9 and the primary reverse osmosis device 6. A tee 5 and a booster pump 8 are respectively arranged on the pipeline of the water production mother pipe 7. A backwash inlet pipe 3 is in communication between the tee 5 and the ultrafiltration CMF1. A pressure reducing valve 4 and a flow meter 2 are respectively arranged on the pipeline of the backwash inlet pipe 3. After the new ultrafiltration backwash system is upgraded, the backwash effect is obviously improved. The membrane surface pollutants are effectively removed, and the permeability and filtration effect of the membrane are restored. Through optimization of the backwash process and parameters, the cleaning efficiency and effect are significantly improved, the service life of the membrane is effectively prolonged, the maintenance cost is reduced, the backwash pump water supply is replaced by the ultrafiltration water mother pipe direct water supply, and the electric energy is saved. Because of the reduction of equipment, the maintenance cost is also reduced.

[0028] Further, in the embodiment, the ultrafiltration CMF1 and the ultrafiltration water pool 9 can be in communication with an ultrafiltration water pipe. The ultrafiltration water pool 9 collects ultrafiltration water from the ultrafiltration CMF1.

[0029] Further, in the embodiment, the ultrafiltration water pool 9 and the primary reverse osmosis device 6 can be in communication with the water production mother pipe 7.

[0030] Further, in the embodiment, the pressure increasing structure can include the booster pump 8 arranged on the pipeline of the water production mother pipe 7.

[0031] Further, in the embodiment, the booster pump 8 can be located between the tee 5 and the ultrafiltration water pool 9. The booster pump 8 is a high-flow water pump, which provides power for water to enter the next reverse osmosis treatment.

[0032] Further, in the embodiment, the tee 5 can be a tee water pipe joint.

[0033] Further, in the embodiment, the water production pipe 7 is provided with a tee joint 5, one end of the tee joint 5 is communicated with the backwash water pipe 3, and one end of the tee joint 5 is communicated with the first reverse osmosis device 6.

[0034] Further, in the embodiment, the pressure reducing structure includes a pressure reducing valve 4 and a flow meter 2 provided on the backwash water pipe 3. The water production pipe 7 is provided with a tee joint 5 and a booster pump 8, the tee joint 5 is communicated with the backwash water pipe 3, the backwash water pipe 3 is provided with the pressure reducing valve 4 and the flow meter 2, the flow meter 2 is located between the ultrafiltration CMF 1 and the pressure reducing valve 4, the flow meter 2 is used to observe the backwash water flow, the flow is 100 cubic meters per hour, and the flow meter 2 is used to monitor the backwash water volume.

[0035] Further, in the embodiment, the pressure reducing valve 4 includes two pressure gauges and an adjusting hand wheel.

[0036] Further, in the embodiment, the inlet pressure of the pressure reducing valve 4 is twice or more than twice the outlet pressure, the pressure reducing valve 4 is used to control the water pipe pressure to reach the backwash pressure standard, for example, the inlet pressure of the pressure reducing valve 4 is about three kilograms, and the outlet pressure is adjusted to about 1.5 kilograms by adjusting the pressure reducing valve 4.

[0037] Further, in the embodiment, the backwash water pipe 3 is communicated with the membrane backwash structure of the ultrafiltration CMF 1, the membrane backwash structure adopts one or more of the horizontal flow, the convection, and the vortex flushing mode to backwash the ultrafiltration membrane. Embodiment 2

[0038] A backwash method for an ultrafiltration device, including the following steps:

[0039] S1, after the ultrafiltration CMF 1 produces water, the water flows into the ultrafiltration water pool 9, and the water is used as the ultrafiltration backwash water source;

[0040] S2, a tee joint 5 is added to the water production pipe 7 leading to the first reverse osmosis device 6, a backwash water pipe 3 is branched out, a pressure reducing valve 4 and a flow meter 2 are used to control the backwash water flow;

[0041] S3, the backwash water reaches the ultrafiltration CMF 1 for backwashing.

[0042] In the reverse washing operation of the ultrafiltration device, the reverse washing effect is obviously improved after the new ultrafiltration reverse washing system is modified and upgraded, the pollutants on the surface of the ultrafiltration CMF1 membrane are effectively removed, the permeability and filtering effect of the membrane are restored, the cleaning efficiency and effect are obviously improved by optimizing the reverse washing process and parameters, the service life of the membrane is effectively prolonged, the maintenance cost is reduced, the reverse washing pump is replaced by the ultrafiltration water mother pipe 7 to save electric energy.

[0043] The reverse washing operation is an effective method for protecting the membrane, which removes the dirt in the membrane holes by the reverse water flow, so that the permeability of the membrane is restored to the normal level.

[0044] Working principle: in use, after the ultrafiltration CMF1 produces water, the produced water flows into the ultrafiltration water tank 9, and the water is used as the ultrafiltration reverse washing water source, a tee joint 5 is added on the water mother pipe 7 leading to the first reverse osmosis 6, a reverse washing inlet pipe 3 is branched out, a pressure reducing valve 4 and a flow meter 2 are used to control the reverse washing water flow, the reverse washing water reaches the ultrafiltration CMF1 for reverse washing, a booster pump 8 is a high-flow water pump, which provides power for the water to enter the next reverse osmosis treatment, the tee joint 5 is a tee joint, the pressure reducing valve 4 controls the water pipe pressure, the pressure at the inlet of the pressure reducing valve 4 is about three kilograms, the outlet pressure is adjusted to about 1.5 kilograms by adjusting the pressure reducing valve 4, the pressure reducing valve 4 has two pressure gauges and a regulating hand wheel, the flow meter 2 is used to observe the reverse washing water flow, the flow is 100 cubic meters per hour, the pressure reducing valve 4 reduces the outlet pressure of the pressure reducing valve 4 to reach the reverse washing pressure standard, and the flow meter 2 on the pipeline is used to monitor the reverse washing water quantity.

[0045] The above embodiments are described in detail, but the content described is only a preferred embodiment of the present application, and cannot be considered as limiting the scope of the present application. Any equivalent changes and improvements made according to the scope of the present application should still belong to the patent coverage range of the present application.

Claims

1. A backwash system for an ultrafiltration apparatus, characterized by: The device comprises sequentially connected ultrafiltration CMF (1), ultrafiltration water tank (9) and primary reverse osmosis device (6), the ultrafiltration CMF (1) flows into the ultrafiltration water tank (9) after producing water, the ultrafiltration water tank (9) is divided into two ways after producing water through a pressurizing structure, one way is the ultrafiltration backwash water source, the other way is the ultrafiltration reverse osmosis water source, the ultrafiltration backwash water source supplies water to the membrane backwash structure of the ultrafiltration CMF (1) after controlling water pressure and flow through a pressure reducing structure, and the ultrafiltration reverse osmosis water source supplies water to the primary reverse osmosis device (6).

2. A backwash system for an ultrafiltration apparatus as defined in claim 1, wherein: The ultrafiltration CMF (1) and the ultrafiltration water tank (9) are communicated through an ultrafiltration water pipe, and the ultrafiltration water tank (9) and the primary reverse osmosis device (6) are communicated through a water mother pipe (7).

3. A backwash system for an ultrafiltration apparatus as defined in claim 2, wherein: The pressurizing structure comprises a pressurizing pump (8) arranged on the pipeline of the water mother pipe (7).

4. A backwash system for an ultrafiltration apparatus as defined in claim 3, wherein: The pressurizing pump (8) is located between the tee joint (5) and the ultrafiltration water tank (9), and the pressurizing pump (8) is a high-flow water pump.

5. A backwash system for an ultrafiltration apparatus as defined in claim 2, wherein: The pipeline of the water mother pipe (7) is further provided with a tee joint (5), one end of the tee joint (5) and the ultrafiltration CMF (1) are communicated through a backwash inlet pipe (3), and one end of the tee joint (5) is communicated with the primary reverse osmosis device (6).

6. A backwash system for an ultrafiltration apparatus as defined in claim 5, wherein: The pressure reducing structure comprises a pressure reducing valve (4) and a flow meter (2) arranged on the pipeline of the backwash inlet pipe (3).

7. A backwash system for an ultrafiltration apparatus as defined in claim 6, wherein: The flow meter (2) is located between the ultrafiltration CMF (1) and the pressure reducing valve (4).

8. A backwash system for an ultrafiltration apparatus as defined in claim 6, wherein: The pressure reducing valve (4) comprises two pressure gauges and an adjusting hand wheel.

9. A backwash system for an ultrafiltration apparatus as defined in claim 6, wherein: The inlet pressure of the pressure reducing valve (4) is twice or more than twice the outlet pressure.

10. A backwash system for an ultrafiltration apparatus as defined in claim 5, wherein: The backwash inlet pipe (3) is communicated with the membrane backwash structure of the ultrafiltration CMF (1), and the membrane backwash structure adopts one or more of horizontal flow, convection and vortex flushing modes to backwash the ultrafiltration membrane.

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