CN106902573B - Application of rush core, filter structure and filter device formed by rush core and preparation method of filter device - Google Patents
Application of rush core, filter structure and filter device formed by rush core and preparation method of filter device Download PDFInfo
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- CN106902573B CN106902573B CN201710212932.6A CN201710212932A CN106902573B CN 106902573 B CN106902573 B CN 106902573B CN 201710212932 A CN201710212932 A CN 201710212932A CN 106902573 B CN106902573 B CN 106902573B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
- B01D39/16—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
- B01D39/18—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being cellulose or derivatives thereof
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
- B01D24/001—Making filter elements not provided for elsewhere
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0001—Making filtering elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0027—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions
- B01D46/0036—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions by adsorption or absorption
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/12—Special parameters characterising the filtering material
- B01D2239/1216—Pore size
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/12—Halogens or halogen-containing compounds
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/10—Solids, e.g. total solids [TS], total suspended solids [TSS] or volatile solids [VS]
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/29—Chlorine compounds
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Filtering Materials (AREA)
Abstract
The invention discloses the application of rush pith as an atmospheric air and drinking water filtering material, and provides a novel filtering structure made of rush pith, the filtering material has good air permeability, permeability and bioactivity, is green and pollution-free, and has good filtering effect on water quality and particles in the air. In addition, the invention also discloses a novel filtering device adopting the novel filtering structure, and the device comprises a rush core layer consisting of rush core particles. The rush core layer can be formed by bonding rush core particles with each other or by other filtering mechanisms. The rush core is used as an atmospheric air and drinking water filtering material, has good air permeability, permeability and biological activity, is green and pollution-free, and has good filtering effect on water quality and particles in the air.
Description
Technical Field
The invention relates to a filtering material, in particular to application of a lantern plant core, a filtering structure, a filtering device and a preparation method of the filtering device.
Background
With the progress of industrialization, the environmental pollution problem is becoming more and more severe, and the air and water quality that people rely on to live are also becoming more and more severe. At the same time, various filter materials and techniques are also produced in succession. At present, the filtering materials for air filtration and water filtration mainly comprise plastic fibers, glass fibers, activated carbon, metal membranes and the like, basically filter air and water by utilizing the mobility of the air and the water and adopting a physical interception microporous structure mode, and have better filtering effects. However, the disadvantages of these filter materials are also obvious, firstly, most of these materials are not degradable and are easy to cause new environmental pollution problems, and the degradable activated carbon brings secondary pollution problems of carbon particles; secondly, the materials have poor filtering effect on heavy metal ions in air and water; thirdly, in order to improve the filtering effect of the materials on micron-sized particles, air resistance is inevitably increased at the same time, and difficulty is caused to some air filtering under some specific environments (such as haze weather).
In order to overcome the problems, a filtering material prepared by crushing corncobs (substances obtained by threshing corn cobs) is provided in the market at present, and the filtering material also has the characteristics of biological activity and environmental friendliness. However, the filtering material mainly utilizes gaps among particles after corncobs are crushed to allow water to pass through, and utilizes contact surfaces between ravines on the surfaces of the particles and the water to intercept particles in water, so that the filtering material has a certain effect on filtering larger particles in water. However, because the density and hardness of the corncob particle materials are high, water cannot flow through the interior of each particle body, and gaps among the corncob particles are relatively large, so that the corncob particle materials are ineffective in filtering micron-sized particles in a water body; for filtering particles in air, it is less feasible because of the larger air resistance.
Disclosure of Invention
The invention aims to provide the application of the rush pith as an atmospheric air and drinking water filtering material, and provides a filtering structure made of the rush pith, wherein the filtering material has good air permeability, permeability and bioactivity, is green and pollution-free, and has good filtering effect on water quality and particles in the air.
The invention also provides a filter device adopting the filter structure, which comprises a rush core layer consisting of rush core particles. The rush core layer can be formed by bonding rush core particles with each other or by other filtering mechanisms.
The invention provides one implementation manner, and the filtering device comprises a rush core layer consisting of rush core particles and an interlayer wrapped on the outer side of the rush core layer, wherein a plurality of micropores with the pore diameter smaller than 1.5mm are arranged on the interlayer, and the diameter of the rush core particles is 2-3 mm.
Preferably, the interlayer is a plastic interlayer, a metal interlayer, a textile interlayer, or an interlayer mixed by porous starch and wood pulp.
The invention also provides a preparation method of the filter device, which comprises the following steps:
A. preparing rush core particles: drying rush until the water content is lower than 3%, peeling off the surface of the stem to obtain a white and breathable cylindrical rush core; crushing the rush pith into particles with the diameter of 2-3 mm, namely rush pith particles;
B. preparing an interlayer: manufacturing an interlayer provided with a containing cavity for placing rush core particles, forming a plurality of micropores with the pore diameter smaller than 1.5mm on the interlayer, and forming an opening for filling the rush core particles on the side surface of the interlayer;
C. preparation of the filter material: and C, filling the rush core particles prepared in the step A into the accommodating cavity through the opening reserved in the step B, and after filling, closing the opening to obtain the filter material.
In the step C, after filling the rush core particles, the distance between the rush core particles and the inner aperture of the rush core particles can be adjusted by squeezing the interlayer and then closing the opening, or the distance between the rush core particles and the inner aperture of the rush core particles can be adjusted by continuously filling the rush core particles and then closing the opening.
The filtering principle of the filtering device of the invention is as follows:
first, when air or water flows through the filter device, the air or water flows through due to the tissue pores of the rush core particles themselves and the gaps between tissue units. But the particles contained therein, which are larger than the pore size of the material inside and the pore size of the gaps among the particles, are blocked in the filter structure; meanwhile, tissue cells of the rush core have a certain adsorption effect on aerosol particles, heavy metal particles, bacteria-carrying particles and various suspended particles in water, so that substances in air and water flow are filtered to purify the air and the water; finally, purified air and water can be obtained.
Compared with the prior art, the invention has the following beneficial effects:
(1) the invention is made of rush core, the inner aperture is originally very small, about 0.5-2 μm, under the condition of external force extrusion, the aperture is correspondingly reduced, and the minimum aperture can reach 0.01 micrometer (μm). The micropores also have mesopores to form a compound filtering structure, so that the particles with the particle diameter less than PM2.5 in air and water can be effectively filtered.
(2) The aperture of the rush core can be automatically adjusted according to the pressure, and the larger the pressure is, the smaller the aperture is. In order to adapt to different filtering requirements; the specific pressure applied can be judged by the volume change of the particles on the principle that the gaps among the particles are minimum; when the volume is reduced by 25-30% by compression, the inter-particle gaps are less than 0.5 μm, and the natural pore diameter inside the rush core particles is reduced by about 25-30%.
(3) The rush pith has different bioactive components and is beneficial to human bodies; can filter aerosol particles, heavy metal particles, bacteria-carrying particles and various suspended particles in air and water and purify peculiar smell in the air and the water.
(4) The rush core is degradable, renewable and recyclable, has no secondary pollution, belongs to a green environment-friendly material, the interlayer can be arranged according to the requirement, the interlayer material is metal, plastic or textile, and can be recycled, and the interlayer can ensure the integrity of particles to the maximum extent and the recycling convenience.
(5) The rush core of the invention has the advantages that as the basic filter material particles have flexibility, the surfaces of the particles form an uneven internal fiber tissue surface after being crushed and broken. Under the extrusion of proper external force, gaps among particles can be greatly reduced, so that the side flow of air or water flow under the action of pressure difference is prevented from leaking, and the filtering effect is prevented from being influenced; and the characteristics of internal micropores and better ventilation performance can be still maintained after extrusion.
Detailed Description
The present invention is further illustrated by the following examples, which include, but are not limited to, the following examples.
Examples
One of the objectives of this embodiment is to provide the use of a rush wick as an atmospheric air and drinking water filter material, which can effectively filter particulate matter in air and water, including aerosol particles, heavy metal particles, bacteria-bearing particles in air, and various aerosols in water. And can also solve the problem of adsorption of odor gas phase substances in air and water.
The present embodiments also provide a filter structure made of rush wicks, and further provide a filter device incorporating the filter structure. The device further processes the rush pith into rush pith particles, and the rush pith particles are formed into rush pith layers through process treatment. The rush core layer can be formed by mutually bonding rush core particles or by other filtering mechanisms, and can be processed according to the needs to form a sheet or a film and the like.
The following one of them realization mode of filtration including the rush sandwich layer that only provides for this embodiment provides a filter equipment promptly, includes the rush sandwich layer of constituteing by rush core granule to and two upper and lower interlayers of parcel in the rush sandwich layer outside, the intermediate layer is plastics intermediate layer, metal sandwich, textile intermediate layer or by the intermediate layer that porous starch and wood pulp mix, just be equipped with the micropore that a plurality of apertures are less than 1.5mm on the intermediate layer, the diameter of rush core granule is 2 ~ 3 mm.
In this embodiment, the two interlayers can be directly connected by bonding, welding or sewing the edges to form a containing cavity filled with rush core particles; the two interlayers can be propped open by adopting the enclosing layer which is made of the same material as the interlayer and is arranged around the two interlayers in a circle to form a cylindrical containing cavity for filling rush core particles; in addition, there are other methods that can form the chamber that holds that is convenient for the fill of lantern plant core granule, for example set up the baffle around the intermediate layer a circle in the intermediate layer, form modes such as holding the chamber promptly after the intermediate layer is closed, no longer describe here.
The embodiment also provides a method for preparing the material, which comprises the following steps:
A. preparing an interlayer: taking two interlayers with the same shape and structure, and arranging a plurality of micropores with the pore diameter smaller than 1.5mm on the interlayers; taking a material which has the same length as the perimeter of the interlayer, has the width of 6-600 mm and is the same as the material of the interlayer as a surrounding layer; then arranging the enclosing layer around the two interlayers in a circle, and reserving an opening at the tail end of the enclosing layer, so that an accommodating cavity with the height of 6-600 mm is formed between the two interlayers and the enclosing layer; wherein, when the interlayer is a plastic plate interlayer, the surrounding layer is adhered with the two interlayers by adhesive; when the interlayer is a metal interlayer, the surrounding layer is welded with the two interlayers; when the interlayer is a textile interlayer, the enclosing layer is sewn with the two interlayers.
B. Preparing rush core particles: drying rush until the water content is lower than 3%, peeling off the surface of the stem to obtain a white and breathable cylindrical rush core; crushing the rush pith into particles with the diameter of 2-3 mm, namely rush pith particles;
the obtained rush core is in a thin cylindrical shape, soft in texture, elastic and easy to break, the length of the rush core is not equal to 20-90 cm, and the diameter of the rush core is 1-3 mm; observing under a magnifying lens, and observing the surface tissue of the sponge-like sponge; the cross section of the device is uneven and is composed of ventilating tissues; each cell is square or rectangular, and has several branches with length of 8-60 μm, diameter of 7-20 μm and wall thickness of about 1.7 μm, and the top ends of the branches of adjacent cells are connected to form a net structure, and the gaps between cells are mostly triangular or square. Therefore, the biological filter has good biological activity, and aerosol particles, heavy metal particles, bacteria-carrying particles and various suspended particles in water in air and water can be filtered by the particle pores, and peculiar smell in air and water can be purified.
C. Preparation of the filter material: and C, filling the rush core particles prepared in the step B into the accommodating cavity through the opening reserved in the step A, and sealing the opening after filling to obtain the filter device.
In the step C, after filling the rush core particles, the distance between the rush core particles and the inner aperture of the rush core particles can be adjusted by squeezing the interlayer and then closing the opening, or the distance between the rush core particles and the inner aperture of the rush core particles can be adjusted by continuously filling the rush core particles and then closing the opening.
In the preparation method, only one way of forming the accommodating cavity is provided, and other ways are known to those skilled in the art by calculation according to the method and are not described herein again.
Example 1
This example is an experiment using a filter device to filter PM2.5 from air. This filter equipment regards as the intermediate layer with the fabric layer, and this fabric layer is whole to be the band structure, is equipped with a plurality of apertures on the fabric layer and is 1 mm's micropore, and the fabric layer internal filling has been full of the rush core granule that the diameter is 2 mm.
The specific steps of the experiment were as follows:
A. preparing a first air quality detector, a first computer exhaust fan with the power of 1.8w and a first filter cavity made of transparent plastic; then, the volume of the filter material filled with the rush core particles is compressed to 70 percent of the original volume, and then the openings of the textile fabric layer are tightly sealed to be used as the filter material of the test;
B. placing an air quality detector into the filter chamber, starting the fan, and measuring the concentration of PM2.5 in air in the filter chamber to 487.6 μ g/m3The concentration of the PM is consistent with that of PM2.5 in natural air; then the filter material is covered on the inlet of the filter cavity and is lightly pressed on the opening of the filter cavity, so that the surface of the filter material is attached to the opening of the filter cavity. Then, the exhaust fan is started, and the concentration of the PM2.5 in the air in the filter cavity is measured to be 79.8 mu g/m3。
The comparison measurement result shows that the efficiency of the filter device for filtering PM2.5 in air reaches 83.6%.
Example 2
This example is an experiment using rush core particles of 2mm diameter in a filter structure to filter PM2.5 from smoke.
The specific steps of the experiment were as follows:
A. preparing one air quality detector, one computer exhaust fan with the power of 1.8w, one filter cavity made of transparent plastic, two cigarettes with the weight of two cigarettes in one packet of cigarettes, an office with the area of 10 square meters, rush core particles with the diameter of 2mm and a soft plastic pipe;
B. sealing the windows of the office, and forming a hole with the diameter of 7mm on only one window;
C. the exhaust fan and the filter cavity are modified into a simple smoking machine which can be connected with a soft plastic pipe;
D. marking the positions with the same length on the two selected cigarettes with a flame-retardant mark, removing the original filter element in the disposable filter tip, filling prepared rush core particles into the filter tip of the cigarettes, and reducing the natural volume of the particles by 30% through pressure to obtain the rush core particle filter tip;
E. one of the cigarettes is ignited and naturally burns, and then extinguishes when reaching the flame-out mark. The air quality detector of the previous experiment is used for measuring the indoor PM2.5 with the concentration of 1580.5 mu g/m3；
F. Opening the window for 3 hours, sealing the window as in the step B after smoke in the room is scattered, allowing another cigarette to pass through the opening of the window, connecting the soft plastic tube of the simple smoking machine in the step C to the rush pith particle filter tip in the step D, and sealing with glass cement; the cigarette is inserted into the rush core filter more closely.
G. And (3) starting the simple smoking machine while lighting the cigarette from the outside of the window, closing the simple smoking machine until the cigarette is burnt to the burning stop mark, and completely keeping the filtered smoke in the room. The air quality detector is used for detecting the concentration of the indoor PM2.5 to be 290.5 mu g/m3；
Comparative measurements found that PM2.5 concentration decreased 81.6% after using the filter structure.
Example 3
This example is an experiment of filtering water using a filter apparatus. The filtering device is formed by using the neck part of the existing mineral water bottle as a filtering layer, fastening a mineral water outlet by using filter cloth with the aperture of 1mm, filling rush core particles with the diameter of 2mm in the bottle neck and slightly pressing the particles tightly.
The specific steps of the experiment were as follows:
A. preparing one pen type residual chlorine measuring instrument and one TDS detecting pen.
B. Taking 20mL of household tap water, and measuring by using a pen-type residual chlorine measuring instrument to obtain the content of the residual chlorine of 3.4 mg/L; after the water sample is filtered by a filtering device, the residual chlorine content is measured, and the measurement result is 0.54 mg/L;
the comparison shows that the filtration efficiency of residual chlorine is 84%;
C. taking 20ML of household tap water, detecting with a TDS detection pen, wherein the total soluble solid value is 168mg/L, filtering with a filtering device, and detecting with the TDS detection pen, wherein the total soluble solid value is 76.3 mg/L;
the comparison shows that the filtration efficiency of the material to soluble total solid in water is 54.5%;
the above-mentioned embodiments are only preferred embodiments of the present invention, and should not be used to limit the scope of the present invention, but all the modifications or variations that are not essential to the spirit and the concept of the main body of the present invention can be made, and the technical problems to be solved by the embodiments are still consistent with the present invention, and should be included in the scope of the present invention.
Claims (1)
1. The usage of the rush core as the drinking water filtration is characterized in that: the application comprises the filtration of chloride ions in drinking water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710212932.6A CN106902573B (en) | 2017-04-01 | 2017-04-01 | Application of rush core, filter structure and filter device formed by rush core and preparation method of filter device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710212932.6A CN106902573B (en) | 2017-04-01 | 2017-04-01 | Application of rush core, filter structure and filter device formed by rush core and preparation method of filter device |
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| CN106902573A CN106902573A (en) | 2017-06-30 |
| CN106902573B true CN106902573B (en) | 2020-01-17 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107772040A (en) * | 2017-12-11 | 2018-03-09 | 成都宏恩生物科技有限公司 | A kind of environmental protection chewing gum containing rush core and preparation method thereof |
| CN108049254A (en) * | 2017-12-11 | 2018-05-18 | 成都宏恩生物科技有限公司 | Particulate air filter paper based on rush core fibre particle and preparation method thereof |
| CN107773499A (en) * | 2017-12-11 | 2018-03-09 | 成都宏恩生物科技有限公司 | A kind of dental care products containing rush core |
| CN108308701A (en) * | 2018-01-31 | 2018-07-24 | 范师华 | A kind of environmental protection filtering material and preparation method and purposes |
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|---|---|---|---|---|
| CN101347266A (en) * | 2008-08-28 | 2009-01-21 | 杨涛 | Method for preparing filter material of cigarette |
| CN102712513A (en) * | 2009-12-31 | 2012-10-03 | 法国滤园有限公司 | Organic filter planted with european and/or tropical desertic canes for the treatment of polluted water, soil or air |
| CN105169748A (en) * | 2015-09-25 | 2015-12-23 | 哈尔滨工业大学 | Application of juncus roemerianus in oil-water separation process |
| JP2016032793A (en) * | 2014-07-31 | 2016-03-10 | 勝代 村上 | Production method of particulate adsorption material |
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2017
- 2017-04-01 CN CN201710212932.6A patent/CN106902573B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101347266A (en) * | 2008-08-28 | 2009-01-21 | 杨涛 | Method for preparing filter material of cigarette |
| CN102712513A (en) * | 2009-12-31 | 2012-10-03 | 法国滤园有限公司 | Organic filter planted with european and/or tropical desertic canes for the treatment of polluted water, soil or air |
| JP2016032793A (en) * | 2014-07-31 | 2016-03-10 | 勝代 村上 | Production method of particulate adsorption material |
| CN105169748A (en) * | 2015-09-25 | 2015-12-23 | 哈尔滨工业大学 | Application of juncus roemerianus in oil-water separation process |
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