Energy-saving ceramic membrane equipment

Abstract

The utility model relates to energy-saving ceramic membrane equipment and belongs to the technical field of ceramic membrane equipment. Comprising a circulating pump and at least three sections of ceramic membrane filtering units, the sections are connected in series, and the ceramic membrane filtering unit in each section comprises a plurality of ceramic membrane assemblies which are connected in parallel; in the direction from the feed liquid inlet to the feed liquid outlet, the number of the ceramic membrane components in the previous section of the ceramic membrane filtering unit is greater than that of the ceramic membrane components in the next section of the ceramic membrane filtering unit; the ceramic membranes in the ceramic membrane assembly are tubular, the parallel connection structure refers to that raw material liquid side pipelines of the ceramic membranes are connected in parallel, and the series connection structure refers to that the raw material liquid side pipelines of the ceramic membranes are connected in series; and the circulating pump is connected with the feed liquid inlet of the ceramic membrane filtering unit at the first section.

Description

Technical Field

[0001] The utility model relates to an energy-saving ceramic membrane device, belonging to the technical field of ceramic membrane devices. Background Art

[0002] At present, conventional ceramic membrane devices such as Figure 1 shown in, the design of conventional ceramic membrane devices generally includes 6 or 8 ceramic membrane modules, a feeding pump, a circulation pump. The 6 or 8 ceramic membrane modules are divided into 2 sections, with 3 or 4 in parallel in each section, and the two sections are connected in series. The connection method is three-in-two-series or four-in-two-series. A filtration pipeline is formed between the two sections. A circulation pipeline is connected between the inlet and outlet of the filtration pipeline. One feed pipeline where the feeding pump is located is connected to the circulation pipeline. The outlet of the filtration pipeline is connected to the discharge pipeline. The permeate outlet of the ceramic membrane module is connected to the permeate main pipe.

[0003] When the membrane device works, first, the material is fed from the material tank into the circulation pump through the feeding pump, and then is transported to each ceramic membrane module by the circulation pump. The permeate of the ceramic membrane is transported from the permeate main pipe to the clear liquid collection tank. The filtered liquid is continuously and repeatedly transported to each ceramic membrane module for filtration through the feeding pump and the circulation pump, and the filtered liquid after filtration is discharged from the discharge pipeline through the filtration pipeline.

[0004] Figure 1 In the conventional ceramic membrane device in, the feed liquid is injected into the ceramic membrane module through a feeding pump and a circulation pump. When working, in order to reduce the pollution of the feed liquid to the ceramic membrane, it is necessary to maintain the membrane surface flow rate of the feed liquid. In the past, in this kind of connection, when the circulation pump works, it is necessary to evenly distribute the flow rate to four or five modules. In order to maintain the membrane surface flow rate, it is necessary to Figure 1 configure a circulation pump and a feeding pump with a larger flow rate in. The large-flow circulation pump and feeding pump result in a relatively large device power, high operating cost, and relatively large investment in the pumps.

[0005] Taking the commonly used ceramic membrane device with 91 cores * 10 modules as an example: The designed operation mode is five-in-two-series. The device is configured with 1 feeding pump, with parameters Q = 180m 3 / h, H = 30m, P = 30kw; configured with 1 circulation pump, with parameters Q = 1600m 3 / h, H = 28m, P = 200kw; The total power is: 30 + 200 = 230kw. Summary of the Utility Model

[0006] The technical problem to be solved by the utility model is to solve the defects of the previous ceramic membrane devices, such as large floor area, high investment, and high operating energy consumption.

[0007] An energy-saving ceramic membrane device includes: a circulation pump and at least three stages of ceramic membrane filtration units, with a series structure between each stage, and each stage of the ceramic membrane filtration unit contains a plurality of ceramic membrane modules that are in a parallel structure with each other;

[0008] And along the direction from the feed liquid inlet to the outlet, the number of ceramic membrane modules in the ceramic membrane filtration unit of the previous stage is greater than the number of ceramic membrane modules in the ceramic membrane filtration unit of the next stage;

[0009] The ceramic membrane in the ceramic membrane module is tubular, and the parallel structure means that the raw material liquid side pipelines of the ceramic membranes are in parallel with each other, and the series structure means that the raw material liquid side pipelines of the ceramic membranes are in series with each other;

[0010] The circulation pump is connected to the feed liquid inlet of the ceramic membrane filtration unit of the first stage.

[0011] The total number of ceramic membrane modules in the energy-saving ceramic membrane device is greater than 8.

[0012] The number of ceramic membrane modules in the ceramic membrane filtration unit of the first stage is at least 4.

[0013] In each stage of the ceramic membrane filtration unit, it includes an inlet manifold and an outlet manifold. The inlets and outlets of the ceramic membrane modules are respectively connected to the inlet manifold and the outlet manifold; and along the direction from the feed liquid inlet to the outlet, the outlet manifold of the ceramic membrane filtration unit of the previous stage is connected to the inlet manifold of the ceramic membrane filtration unit of the next stage.

[0014] The number of ceramic membrane filtration units is three stages, and along the direction from the feed liquid inlet to the outlet, the number of ceramic membrane modules in the three stages of ceramic membrane filtration units is 4 - 8, 3 - 7, and 2 - 6 respectively.

[0015] The ceramic membrane in the ceramic membrane module is single-tubular or multi-channel.

[0016] Beneficial effects

[0017] In this new energy-saving ceramic membrane device, by designing the membrane modules into at least three stages, with the number of ceramic membrane modules decreasing in each stage, and the ceramic membrane modules in each stage being connected in series through pipelines to form a filtration pipeline. Compared with conventional ceramic membrane devices, it not only effectively increases the membrane area, reduces the floor area, but also reduces the operating energy consumption and operating cost. In addition, the device can also increase the membrane surface flow rate of the subsequent membrane segments by decreasing the number of ceramic membrane modules in each stage, thereby improving the treatment efficiency. Description of the drawings

[0018] Figure 1 It is a schematic diagram of an existing ceramic membrane device;

[0019] Figure 2 It is a schematic diagram of an energy-saving ceramic membrane equipment (Type 5-4-3);

[0020] Figure 3 It is a schematic diagram of an energy-saving ceramic membrane equipment (Type 6-5-4);

[0021] 11. First-stage membrane module; 12. Second-stage membrane module; 13. Third-stage membrane module;

[0022] 21. First inlet manifold; 22. First outlet manifold; 23. Second inlet manifold; 22. Second outlet manifold; 24. Third inlet manifold; 25. Third outlet manifold;

[0023] 3. Circulation pump; Specific implementation method

[0024] As Figure 2 shown, a new type of energy-saving ceramic membrane equipment (Type 5-4-3) includes 12 ceramic membrane modules. The 12 ceramic membrane modules on the filter pipeline are divided into three sections. The first 5 ceramic membrane modules are in one section (connected in series with each other), the middle 5 ceramic membrane modules are in the second section (connected in series with each other), and the last 4 ceramic membrane modules are in the third section (connected in series with each other). The ceramic membrane modules in each section are connected in series through pipelines to form a filter pipeline. The inlet of the filter pipeline is connected to a feeding pump and a circulation pump (the pump is not shown in the figure). The outlet of the feeding pump is connected to the inlet of the circulation pump, and a bifurcation is designed at the outlet end of the last-stage ceramic membrane module. One way returns to the material tank to form an external circulation; the other way is connected to the inlet of the circulation pump to form an internal circulation.

[0025] In the figure, the outlet of the circulation pump is connected to the first inlet manifold 21. There are 5 modules connected in parallel on the first inlet manifold 21. These 5 modules are tubular or multi-channel modules, and the outlets on the liquid side of their material are all connected to the first outlet manifold 22; the first outlet manifold 22 is then connected to the second inlet manifold 23, and there are 4 modules connected in parallel on the second inlet manifold 23. These 4 modules are tubular or multi-channel modules, and the outlets on the liquid side of their material are all connected to the second outlet manifold 24; the second outlet manifold 24 is then connected to the third inlet manifold 25, and there are 3 modules connected in parallel on the third inlet manifold 25. These 3 modules are tubular or multi-channel modules, and the outlets on the liquid side of their material are all connected to the third outlet manifold 26.

[0026] The ceramic membrane modules on the filter pipeline can also be 9 (Type 4-3-2), 15 (Type 6-5-4), 14 (Type 5-4-3-2) or other more quantities. For the quantity of the ceramic membrane modules on the filter pipeline and the number of groups divided, users can freely choose according to the actual situation.

[0027] The circulation pipeline is provided with an exhaust valve at the top and is connected to the outlet pipeline. The outlet pipeline is used to be opened when the equipment just starts running, and is closed when the gas inside the equipment is emptied and the material is filled, ensuring the safe operation of the entire equipment.

[0028] When the ceramic membrane equipment is working, the material is pumped into the circulation pipeline by the feeding pump, and the liquid is pumped into the filtration pipeline by the circulation pump, that is, it enters the first-stage ceramic membrane module, and then passes through the second-stage ceramic membrane module and the third-stage ceramic membrane module in sequence; then most of it continues to enter the circulation pipeline through the circulation pump for circulating filtration, and a small part returns to the material tank or is discharged. First, the clear liquid of each stage of the ceramic membrane is summarized, and then the clear liquid of the three stages of the ceramic membrane is summarized, and finally it enters the ceramic membrane clear liquid tank along with the total permeate pipeline.

[0029] Two auxiliary feeding pipelines 3 are respectively connected to the pipelines in the front and rear groups of ceramic membrane modules, and intermediate feeding is carried out for the entire filtration pipeline through the feeding pumps on the two auxiliary feeding pipelines 3 respectively, making up for the defects of low membrane surface flow rate and insufficient pressure in the rear part of the 8 ceramic membrane modules 1 connected in series. Now, the membrane surface flow rate and pressure in the rear part of the filtration pipeline are provided by the feeding pumps of the two auxiliary feeding pipelines 3, and the flow rate and pressure of the entire filtration pipeline are guaranteed.

[0030] Taking the ceramic membrane equipment of 91 cores * 12 modules as an example: Figure 2 Among them, the equipment is designed to operate in a three-stage mode. By using a three-stage design with decreasing membrane modules, the problems of high energy consumption and high investment in the subsequent modules in the 6-in-2-series operation mode are solved, so as to achieve the purpose of reducing energy consumption and operating costs. The equipment is equipped with 1 feeding pump, with parameters of Q = 180 m3 / h, H = 30 m, P = 30 kw; 1 circulation pump is configured, with parameters of Q = 1600 m3 / h, H = 28 m, P = 200 kw; the total power is: 30 + 200 = 230 kw. It can be seen that by using the ceramic membrane equipment of the present utility model, the power of the feeding pump and the circulation pump used becomes smaller, the cost is reduced, and the energy consumption is reduced.

Claims

1. An energy-saving ceramic membrane device, characterized in that, Including: A circulation pump and a ceramic membrane filtration unit with at least three sections, where each section is in a series structure, and each ceramic membrane filtration unit in each section contains a plurality of ceramic membrane modules in a parallel structure with each other; And along the direction from the feed liquid inlet to the outlet, the number of ceramic membrane modules in the ceramic membrane filtration unit of the previous section is greater than the number of ceramic membrane modules in the ceramic membrane filtration unit of the next section; The ceramic membrane in the ceramic membrane module is tubular, and the parallel structure means that the raw material liquid side pipelines of the ceramic membranes are in parallel with each other, and the series structure means that the raw material liquid side pipelines of the ceramic membranes are in series with each other; The circulation pump is connected to the feed liquid inlet of the ceramic membrane filtration unit of the first section.

2. The energy-saving ceramic membrane equipment according to claim 1, wherein The total number of ceramic membrane modules in the energy-saving ceramic membrane equipment is greater than 8.

3. The energy-saving ceramic membrane equipment according to claim 1, characterized in that, The number of ceramic membrane modules in the ceramic membrane filtration unit of the first section is at least 4.

4. The energy-saving ceramic membrane equipment according to claim 1, characterized in that, In each ceramic membrane filtration unit, it includes an inlet manifold and an outlet manifold. The inlets and outlets of the ceramic membrane modules are respectively connected to the inlet manifold and the outlet manifold; and along the direction from the feed liquid inlet to the outlet, the outlet manifold of the ceramic membrane filtration unit of the previous section is connected to the inlet manifold of the ceramic membrane filtration unit of the next section.

5. The energy-saving ceramic membrane equipment according to claim 1, characterized in that, The number of ceramic membrane filtration units is three sections, and along the direction from the feed liquid inlet to the outlet, the numbers of ceramic membrane modules in the three sections of ceramic membrane filtration units are 4 - 8, 3 - 7, and 2 - 6 respectively.

6. The energy-saving ceramic membrane equipment according to claim 1, wherein The ceramic membrane in the ceramic membrane module is single-tubular or multi-channel.

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