CN1640526A - Water membrane filtering method and device - Google Patents
Water membrane filtering method and device Download PDFInfo
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- CN1640526A CN1640526A CN 200410020396 CN200410020396A CN1640526A CN 1640526 A CN1640526 A CN 1640526A CN 200410020396 CN200410020396 CN 200410020396 CN 200410020396 A CN200410020396 A CN 200410020396A CN 1640526 A CN1640526 A CN 1640526A
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Abstract
The present invention relates to a membrane filtration method of water and its equipment. It is characterized by that in water inlet side of filtering membrane in filter the diatomite can be added, and the addition quantity of diatomite is 2g-100g for every square meter of filtering membrane. In the added diatomite the ferrous sulfate, ferric sulfate, ferric hydroxide or other iron salt also can be added. Said invented equipment is formed from filter and diatomite layer. Said invention also provides the concrete structure of said equipment.
Description
Technical field
The present invention relates to a kind of membrane filtering method and device of water.
Background technology
Along with the raising of people's living standard, to the also progressively raising of requirement of water quality.On the other hand, since the pollution of water body, the colloid in the drinking water, and suspensions such as microorganism also increase.For drinking high-quality water, drink after adopting membrane filtering method with water filtration usually.But, because the suspension in the water can stop up film, make its flux reduce rapidly, limited the application aspect drinking water.Though, aspect the prevention and cure of pollution of film certain methods is being arranged, can satisfy the drinking water requirement, easy to operate again, cheap method is also seldom.Particularly for small-sized filter plant, its difficulty is just bigger.Therefore, need provide a kind of and can satisfy the drinking water requirement, easy to operate again, the with low cost method and apparatus that prevents the film obstruction.
Summary of the invention
In order to solve the deficiencies in the prior art, the invention provides a kind of novel method and apparatus.
The present invention is achieved in that the influent side of the filter membrane in filter adds diatomite.Diatomaceous addition is that every square metre of filter membrane 2 restrains to 100 grams, and preferred 5 grams are to 60 grams.
Can add ferrous sulfate or ferric sulfate or iron hydroxide or other iron in the diatomite that is added is the mixture of salt or these materials, and its addition is that described iron series compound and diatomaceous adding proportion are 1: 0.2～7, preferred 1: 0.5～3.
Diatomite that is added and iron series compound can be peeled off it by backwash or flushing.
The present invention has introduced a kind of device of membrane filtering method of water, and it is made up of filter 6 and diatomite layer 8; 1. algae soil layer 8 comprises the algae soil layer that uses separately and the 2. filter course of diatomite and iron series compound composition, abbreviates diatomite layer as.The shell of filter is provided with water inlet 1 and delivery port 2, is provided with filter membrane 5 in the shell, and filter membrane is provided with diatomite layer.
In addition, according to the situation of designed filter, shell that can filter is provided with diatomite and adds inlet 3; Also
Can be provided with mud discharging mouth 4 at the influent side of filter.
Add diatomite by influent side, in filter process, form cake layer, the colloid in absorption and the filtered water inlet, suspensions such as thalline, the pollution that alleviates film to filter membrane.In addition, utilize the diatomite filter cake can be stripped from the characteristic that makes filter course obtain upgrading, improve membrane flux by changing cake layer.Thus, alleviate the pollution of film generally, prolonged the life-span of film.
The diatomite voidage is big, and adsorptivity is strong, can adsorb to high-performance the suspension in the trap water, and filtration resistance is also less relatively simultaneously; And the quality softness can not cause the damage on film surface.In addition, diatomite proportion is little, easily suspend, thus can be preferably and be distributed in the surface of film with comparalive ease, form filter course comparatively uniformly.
In addition, diatomite is high degree of dispersion, for making its improvement such as tack on the film surface, can add ferrous sulfate or ferric sulfate or iron hydroxide etc. or its mixture in diatomite, makes diatomite form floccule body, attached to the surface of filter membrane.Iron hydroxide can directly add, and also alkali can be added to react in the molysite to obtain.
Because diatomite and ferrous sulfate, ferric sulfate and iron hydroxide all meet the food hygiene requirement, and therefore the filtering material of Chang Zuowei food service industry, can be used as the filtering material of drinking water fully from the angle of safety and sanitation.
Diatomaceous interpolation can be also can be to pass through water inlet with dedicated port.Spoil disposal can be by special-purpose mud discharging mouth during backwash, also water inlet is pulled down from water inlet pipe, by the water inlet spoil disposal.
Influent side is meant with the filter membrane to be a side of boundary's filtered film, and corresponding water outlet side then is meant the side after water into passes filter membrane.
Membrane filtering method and equipment thereof that diatomite provided by the invention adds water add the pollution that the formed cake layer of diatomite alleviates film by the influent side to filter membrane, and by upgrading cake layer raising membrane flux, meeting under the condition of food hygiene, prolonging the life-span of film.
Description of drawings
The diatomite of Fig. 1: embodiment 1 water adds the film filter schematic diagram;
The diatomite of Fig. 2: embodiment 2 water adds the film filter schematic diagram;
The diatomite of Fig. 3: embodiment 5 water adds the film filter schematic diagram.
The specific embodiment
The present invention is described in further detail below in conjunction with the drawings and specific embodiments:
Embodiment 1:
As shown in Figure 1, running water 1 enters from entering the mouth, and discharges from exporting 2 behind membrane filtration.Diatomite is packed into from import 3, and in filter process, diatomite is attached on the surface of film 5, forms diatomite pre-filtering layer 8, and diatomaceous addition is every square metre of filter membrane 8 grams.Suspension in the running water is held back, alleviated the pollution of film.When needing backwash, running water pipe can be linked to each other with pure water inlet 2, water (flow) direction is opposite with the direction of filtration, that is, diatomaceous filter cake is washed open when the water purification side direction of film is filtered side flow, discharges from mud discharging mouth 4 then.After again filter being installed by the filtration requirement after backwash finishes, filter again.
Embodiment 2:
As shown in Figure 2, running water 1 enters from entering the mouth, and discharges from exporting 2 behind membrane filtration.Diatomite is packed in advance from import 1, and in filter process, diatomite is attached on the surface of film 5, forms diatomite pre-filtering layer 8, and diatomaceous addition is every square metre of filter membrane 15 grams, and the suspension in the running water is held back, and has alleviated the pollution of film.When needing backwash, filter can be pulled down from running water pipe, running water pipe is linked to each other with pure water inlet 2, water (flow) direction is opposite with the direction of filtration, that is, diatomaceous filter cake is washed open when the water purification side direction of film is filtered side flow, discharges from water inlet 1 then.After again filter being installed by the filtration requirement after backwash finishes, filter.
Embodiment 3:
As shown in Figure 2, running water 1 enters from entering the mouth, and discharges from exporting 2 behind membrane filtration.Diatomite and ferrous sulfate are packed in advance from import 1, in filter process, diatomite is attached the surface at film 5, form diatomite pre-filtering layer 8, diatomaceous addition is every square metre of filter membrane 20 grams, the addition of ferrous sulfate is 20 grams, and the suspension in the running water is held back, and has alleviated the pollution of film.When needing backwash, the shell 6 of filter can be unloaded, manually film is cleaned, after cleaning finishes, again shell is installed, filter.
Embodiment 4:
As shown in Figure 2, running water 1 enters from entering the mouth, and discharges from exporting 2 behind membrane filtration.Diatomite and iron hydroxide are packed in advance from import 1, in filter process, diatomite and iron hydroxide are attached the surface at film 5, form diatomite pre-filtering layer 8, diatomaceous addition is every square metre of filter membrane 18 grams, the addition of ferrous sulfate is 12 grams, and the suspension in the running water is held back, and has alleviated the pollution of film.When needing backwash, the shell 6 of filter can be unloaded, manually film is cleaned, after cleaning finishes, again shell is installed, filter.
As shown in Figure 3, running water 1 enters from entering the mouth, and discharges from exporting 2 behind membrane filtration.Diatomite is packed into from import 3, and in filter process, diatomite is attached on the surface of film 5, forms diatomite pre-filtering layer 8, and diatomaceous addition is every square metre of filter membrane 25 grams, and the suspension in the running water is held back, and has alleviated the pollution of film.When the filtered water amount reaches a certain amount of, when filtration resistance increases to certain value, clean.Mud discharging mouth 4 can be opened,, and, make the film disturbance, diatomaceous filter cake is come off, discharge from mud discharging mouth 4 then by air inlet 7 bubbling airs from water inlet 1 water inlet.After again filter being installed by the filtration requirement after cleaning finishes, filter.
Embodiment 6
As shown in Figure 1, running water 1 enters from entering the mouth, and discharges from exporting 2 behind membrane filtration.Diatomite is packed into from import 3, and in filter process, diatomite is attached the surface at film, forms diatomite pre-filtering layer, and diatomaceous addition is every square metre of filter membrane 30 grams, and the suspension in the running water is held back, and has alleviated the pollution of film.When needing backwash, mud discharging mouth 4 can be opened,, make the film disturbance, diatomaceous filter cake is come off, discharge from mud discharging mouth 4 then by water inlet current mobile from water inlet 1 water inlet.After again filter being installed by the filtration requirement after cleaning finishes, filter.
In actual use, can select concrete form and cleaning or backwash mode according to the filter size.Diatomaceous consumption can be complied with its mass property and concrete decision.
Above embodiment is further detailed description to the present invention, is not limitation of the invention, and protection domain of the present invention is not subjected to the restriction of these embodiment, and protection scope of the present invention is as the criterion with claim.
Claims (10)
1. the membrane filtering method of a water is characterized in that: at the influent side interpolation diatomite of filter membrane.
2. the membrane filtering method of a kind of water as claimed in claim 1 is characterized in that described diatomaceous addition is that every square metre of filter membrane 2 restrains to 100 grams, and preferred 5 grams are to 60 grams.
3. the membrane filtering method of a kind of water as claimed in claim 1, it is characterized in that adding in the diatomite that is added ferrous sulfate or ferric sulfate or iron hydroxide or other iron is the mixture of salt or these materials, and its addition is that described iron series compound and diatomaceous adding proportion are 1: 0.2～7, preferred 1: 0.5～3.
4. as the membrane filtering method of claim 1 and 3 described a kind of water, it is characterized in that the diatomite of described interpolation or can it be peeled off by backwash or flushing with the mixture of iron series compound.
5. as the device of the membrane filtering method of claim 1 and 3 described a kind of water, it is made up of filter (6) and diatomite layer (8); The shell that it is characterized in that filter is provided with water inlet (1) and delivery port (2), is provided with filter membrane (5) in the shell, and filter membrane is provided with diatomite layer.
6. the device of the membrane filtration of a kind of water as claimed in claim 4, the shell that it is characterized in that described filter is provided with diatomite and adds inlet (3).
7. the device of the membrane filtration of a kind of water as claimed in claim 4 is characterized in that the influent side of described filter is provided with mud discharging mouth (4).
8. the membrane filtering method of a kind of water as claimed in claim 1 is characterized in that running water filter (6) enters from inlet (1), discharges from outlet (2) behind membrane filtration; Diatomite is packed into from import (3)., in filter process, diatomite is attached on the surface of film (5), forms diatomite pre-filtering layer (8), and the suspension in the running water is held back, and has alleviated the pollution of film; When carrying out backwash, running water pipe is linked to each other with pure water inlet (2), water (flow) direction is opposite with the direction of filtration, diatomaceous filter cake is washed open when the water purification side direction of film is filtered side flow, discharges from mud discharging mouth (4) then; After again filter being installed by the filtration requirement after backwash finishes, filter.
9. the membrane filtering method of a kind of water as claimed in claim 7 is characterized in that diatomite packs in advance and diatomite import (3) is not set from import (1); When carrying out backwash filter is pulled down from running water pipe, running water pipe is linked to each other with pure water inlet 2, water (flow) direction is opposite with the direction of filtration, diatomaceous filter cake is washed open when the water purification side direction of film is filtered side flow, discharges and mud discharging mouth (4) is not set from water inlet (1) then.
10. the membrane filtering method of a kind of water as claimed in claim 7 is characterized in that filter is provided with air inlet (7); When cleaning, mud discharging mouth (4) is opened,, and, made the film disturbance, diatomaceous filter cake is come off, discharge from mud discharging mouth (4) then by air inlet 7 bubbling airs from water inlet (1) water inlet; After again filter being installed by the filtration requirement after cleaning finishes, filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410020396 CN1640526A (en) | 2004-09-02 | 2004-09-02 | Water membrane filtering method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410020396 CN1640526A (en) | 2004-09-02 | 2004-09-02 | Water membrane filtering method and device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1640526A true CN1640526A (en) | 2005-07-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410020396 Pending CN1640526A (en) | 2004-09-02 | 2004-09-02 | Water membrane filtering method and device |
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| CN (1) | CN1640526A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101795745B (en) * | 2007-08-30 | 2012-11-14 | 国立大学法人九州大学 | Filter and method of filtration |
| CN106335940A (en) * | 2016-09-28 | 2017-01-18 | 江苏华兴电气科技有限公司 | Mechanical filter for filtering industrial sewage |
| CN110770174A (en) * | 2017-06-15 | 2020-02-07 | 沙特阿拉伯石油公司 | Produced water treatment system and method for recovering organic compounds from produced water |
-
2004
- 2004-09-02 CN CN 200410020396 patent/CN1640526A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101795745B (en) * | 2007-08-30 | 2012-11-14 | 国立大学法人九州大学 | Filter and method of filtration |
| CN106335940A (en) * | 2016-09-28 | 2017-01-18 | 江苏华兴电气科技有限公司 | Mechanical filter for filtering industrial sewage |
| CN110770174A (en) * | 2017-06-15 | 2020-02-07 | 沙特阿拉伯石油公司 | Produced water treatment system and method for recovering organic compounds from produced water |
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