Rapid filtering device for micro-fine particle colloid

Abstract

The utility model discloses a rapid filtering device for micro-fine particle colloid. The rapid filtering device comprises a filter, a valve, a feeding pipeline and a discharging pipeline, the filter is filled with a fiber filtering material; the feeding pipeline is provided with at least two inlets and at least one outlet, each inlet is provided with a valve, and the outlet is communicated with the interior of the filter; one inlet of the feeding pipeline is used for introducing feed liquid to be filtered, and the other inlet of the feeding pipeline is used for introducing a filter washing material; one end of the discharging pipeline is communicated with the interior of the filter, and a height difference exists between the discharging pipeline and the outlet of the feeding pipeline. According to the utility model, the fiber filtering material is used as the micro-fine particle colloid filtering material, so that the filtering effect on the micro-fine particle colloid is good, the material cost is low, frequent cleaning is not needed, and the washing agent can be effectively saved. In addition, by optimizing the pipeline arrangement, the equipment investment cost is low, and the operation is simpler.

Description

Technical Field

[0001] The utility model relates to the technical field of environmental protection chemical industry, in particular to a micro-particle colloid rapid filtering device. Background Art

[0002] Rapid filtration technology for fine-particle colloids and suspended solids in water bodies is a common problem in the chemical, environmental protection, metallurgical and other industries. Traditional plate and frame filter press treatment methods have the problem of easy clogging of filter cloths and difficulty in efficient filtration. The dense sedimentation efficiency is low, and the underflow concentration is not high. Plate and frame filter press cannot work efficiently. The addition of filter aids can greatly improve the efficiency of plate and frame filtration, but there is a problem of high filter aid recovery costs. Microfiltration and ultrafiltration filtration technologies mainly include ceramic membrane filtration technology and organic PVDF membrane filtration technology. They can effectively filter fine-particle colloid suspensions, but ceramic membrane filtration technology has problems such as frequent backwashing, high cost, and low membrane flux. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the utility model aims to provide a micro-particle colloid rapid filtering device.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A fine particle colloid rapid filtration device comprises a filter, a valve, a feed pipeline and a discharge pipeline; the filter is filled with fiber filter material; the feed pipeline has at least two inlets and at least one outlet, each inlet is equipped with a valve, and the outlet is connected to the interior of the filter; one inlet of the feed pipeline is used to introduce a liquid to be filtered, and the other inlet is used to introduce a filter washing material; one end of the discharge pipeline is connected to the interior of the filter and has a height difference with the outlet of the feed pipeline.

[0006] As a preferred solution, the filling amount of the fiber filter material accounts for 85-95% of the volume of the filter.

[0007] As a preferred solution, one end of the discharge pipeline is connected to the bottom of the filter, and the outlet of the feed pipeline is connected to the top of the filter.

[0008] The beneficial effects of the present invention are as follows: the present invention uses fiber filter material as the fine particle colloid filter material, which has a good filtering effect on fine particle colloids, has low material cost, and does not require frequent cleaning, which can effectively save detergent. In addition, the present invention reduces equipment investment costs and is simpler to operate by optimizing the pipeline layout. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 This is a schematic structural diagram of a micro-particle colloid rapid filtration device according to Example 1 of the present utility model. DETAILED DESCRIPTION

[0010] The present invention will be further described below in conjunction with the accompanying drawings. It should be noted that this embodiment is based on the technical solution and provides a detailed implementation method and specific operation process, but the protection scope of the present invention is not limited to this embodiment.

[0011] Example 1

[0012] This embodiment provides a fine particle colloid rapid filtration device for rapid filtration of a liquid containing one or more fine particle colloids such as iron hydroxide, magnesium hydroxide, and silicon dioxide.

[0013] like Figure 1 As shown, the fine particle colloid rapid filtration device of this embodiment includes a filter 1, valve 1 2, valve 2 3, a feed pipeline 4 and a discharge pipeline 5; the filter 1 is filled with fiber filter material 6; the feed pipeline 4 has two inlets and one outlet, and the two inlets are respectively equipped with valve 1 2 and valve 2 3, and the outlets are connected to the interior of the filter 1; one of the inlets of the feed pipeline 4 is used to pass the material to be filtered, and the other inlet is used to pass the filter washing material; one end of the discharge pipeline 5 is connected to the interior of the filter and there is a height difference between it and the outlet of the feed pipeline 4.

[0014] In this embodiment, the filling amount of the fiber filter material 6 accounts for 85-95% of the volume of the filter 1 .

[0015] In this embodiment, one end of the discharge pipeline 5 is connected to the bottom of the filter 1 , and the outlet of the feed pipeline 4 is connected to the top of the filter 1 .

[0016] During operation, open valve 1 (2), close valve 2 (3), pump in the liquid to be filtered, and the liquid enters the filter through the outlet of the feed pipe (4). After being filtered by the fiber filter material (6), the clear liquid flows out from the discharge pipe (5). When the suspended matter content of the filtered clear liquid exceeds the standard, the feeding is stopped.

[0017] At this time, close valve 1 2, open valve 2 3, first let air in to empty the liquid in the filter; then let acid in for washing, then let clean water in for washing, and after clean water washing, let air in again to empty it; after emptying, reopen valve 1 2, close valve 2 3, and set aside.

[0018] The preferred operating parameters of the fine particle colloid rapid filtration device of this embodiment are: the fine particle suspended matter content of the liquid to be filtered is 10-1000 mg / L; the feed flow rate is 1-10 bv / h; the suspended matter content of the clear liquid after filtration is 0.5-5 mg / L; the air flow rate during the cleaning and emptying process is 1-10 m 3 / h; the amount of acid used in the cleaning process is 1-5bv, and the mass concentration of the acid is 1-5%; the amount of clean water used in the cleaning process is 1-5bv.

[0019] Example 2

[0020] This embodiment provides an application example of the device described in Embodiment 1.

[0021] The content of mixed suspended solids of magnesium hydroxide and silicon dioxide in the lithium-rich liquid produced by a certain salt lake lithium extraction industry is 1000mg / L. When filtering the lithium-rich liquid, open valve 12, close valve 23, and pump the lithium-rich liquid into filter 1 (the filter is filled with fiber filter material that accounts for 95% of the volume) at a flow rate of 1bv. The filtered clear liquid is received from the other end of the discharge pipeline. The suspended solids content of the clear liquid after treatment is 5mg / L. When the suspended solids content of the clear liquid is about to exceed the standard, stop feeding. At this time, close valve 12, open valve 23, and first pump the filter at a rate of 10m 3 / h flow rate into the air, empty the liquid in the filter; after emptying, first pass through 1% acid solution 5bv for washing, then pass through 5bv of clean water for washing, after washing with clean water, follow 10m 3 / h flow of air to drain. After draining, open valve 1 (2) and close valve 2 (3) for standby use.

[0022] Example 3

[0023] This embodiment provides an application example of the device described in Embodiment 1.

[0024] The suspended solids content of ferric hydroxide in the liquid produced during the production process of a certain environmental protection industry is 10mg / L. When filtering the liquid, open valve 12, close valve 23, and pump the lithium-rich liquid into filter 1 (the filter is filled with fiber filter material that accounts for 85% of the volume) at a flow rate of 10bv. The filtered clear liquid is received from the other end of the discharge pipeline. The suspended solids content of the clear liquid after treatment is 1mg / L. When the suspended solids content of the clear liquid is about to exceed the standard, stop feeding. At this time, close valve 12, open valve 23, and first pump the liquid at a flow rate of 1m 3 / h flow rate into the air, empty the liquid in the filter; after emptying, first pass 1% acid solution 1bv for washing, then pass 1bv of clean water for washing, after washing with clean water, follow 1m 3 / h flow of air to drain. After draining, open valve 1 (2) and close valve 2 (3) for standby use.

[0025] Those skilled in the art can make various corresponding changes and modifications based on the above technical solutions and concepts, and all of these changes and modifications should be included in the scope of protection of the claims of this utility model.

Claims

1. A micro-particle colloid rapid filtration device, characterized in that: The invention comprises a filter (1), a valve, a feed pipe (4) and a discharge pipe (5); the filter (1) is filled with fiber filter material (6); the feed pipe (4) has at least two inlets and at least one outlet, each inlet is equipped with a valve, and the outlet is connected to the interior of the filter (1); one inlet of the feed pipe (4) is used to introduce a liquid to be filtered, and the other inlet is used to introduce a filter washing material; one end of the discharge pipe (5) is connected to the interior of the filter and has a height difference with the outlet of the feed pipe (4).

2. The microparticle colloid rapid filtration device according to claim 1, characterized in that: The filling amount of the fiber filter material (6) accounts for 85-95% of the volume of the filter (1).

3. The microparticle colloid rapid filtration device according to claim 1, characterized in that: One end of the discharge pipeline (5) is connected to the bottom of the filter (1), and the outlet of the feed pipeline (4) is connected to the top of the filter (1).

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