CN103028329A - Grinding wastewater reuse and silica powder recovery device with tubular micro-filtration membrane assembly - Google Patents
Grinding wastewater reuse and silica powder recovery device with tubular micro-filtration membrane assembly Download PDFInfo
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- CN103028329A CN103028329A CN2012105238144A CN201210523814A CN103028329A CN 103028329 A CN103028329 A CN 103028329A CN 2012105238144 A CN2012105238144 A CN 2012105238144A CN 201210523814 A CN201210523814 A CN 201210523814A CN 103028329 A CN103028329 A CN 103028329A
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Abstract
The invention provides a grinding wastewater reuse and silica powder recovery device with a tubular micro-filtration membrane assembly. The device comprises a raw water tank, the tubular micro-filtration membrane assembly, a first delivery pipe, a circulating pump, a water production tank, a second delivery pipe, a silica mud recovery device, a third delivery pipe, a mud delivery pump, a fourth delivery pipeline, a back washing pump and an automatic control system, wherein the raw water tank is used for containing wastewater; the first delivery pipe is used for communicating the raw water tank with the tubular micro-filtration membrane assembly; the circulating pump is arranged on the first delivery pipe; the second delivery pipe is used for communicating the tubular micro-filtration membrane assembly with the water production tank; the third delivery pipe is used for communicating the lower end of the raw water tank with a pressure filter; the mud delivery pump is arranged on the third delivery pipe; the fourth delivery pipeline is communicated with the water production tank; and the back washing pump is arranged on the fourth delivery pipeline. According to the grinding wastewater reuse and silica powder recovery devic, the wastewater enters the tubular micro-filtration membrane assembly under the action of the circulating pump, is purified and enters the water production tank through the tubular micro-filtration membrane assembly after being purified, generated concentrated water flows back to the raw water tank, and the purified water enters the tubular micro-filtration membrane assembly and is subjected to back washing, and particles in the raw water tank enter the silica mud recovery device, are dehydrated to form mud cakes and are discharged. The grinding wastewater reuse and silica powder recovery device with the tubular micro-filtration membrane assembly has a good pollution cleaning effect and high efficiency.
Description
Technical field
The present invention relates to water-treatment technology field, relate in particular to a kind of abrasive waste water reuse, silica powder recovering device with the tube type filter membrance assembly.
Background technology
At present, waste water (hereinafter to be referred as " abrasive waste water ") to producing in wafer attenuate, brilliant back-grinding and the wafer cutting process in the Electronics Factory, contain small silicon bits and deionized water, wherein less because of silicon bits particle, be disposed to and still have small silicon bits to fly in the water in the water, make water be pitchy, not only can not reuse, but also directly have influence on the view of factory.So as long as silicon bits and deionized water can be separated, producing water just can reuse, silica flour also can be separated simultaneously, and then is used for suitable production and goes the production of realization resource.Society, water have become a kind of commodity of shortage, are counted as a kind of limited precious resources; And the price comparison of silica flour is expensive, for the rationalization that realizes resource is used, must unite the safety of water, resources and environment three aspects: function aborning for this reason, put forth effort to form the water ecological environment of harmony between man and nature, the fine situation of resource rational exploitation and utilization.
The method of existing processing abrasive waste water mainly contains: flocculent precipitation, continuous hollow cellulosic ultrafiltration treatment technology, immersed flat plate membrane technology and tubular ultra-filtration membrane treatment technology.Flocculent precipitation produces the processes such as electrochemistry, physical chemistry waste water is carried out Separation of Solid and Liquid by dosing, this flocculent precipitation efficient is high, processing method is ripe, simple to operate, but in processing procedure, use a large amount of flocculants, flocculation aid to help precipitation, easily produce secondary pollution, produce water and be difficult to recycling; Continuous hollow cellulosic ultrafiltration treatment technology is to adopt hollow-fiber membrane filter unit to process waste water, and hollow-fiber membrane filter unit is comprised of hollow fiber film thread, the hollow fiber film thread easy fracture, flux is low, and product water water quality is unstable, the problems such as Chemical cleaning is frequent, and energy resource consumption is large; The immersed flat plate membrane technology is to process waste water by the immersed flat panel membrane filtering film component, the immersed flat panel membrane filtering film component is directly to be immersed in membrane module in the raw water box, adopt the mode of pump or siphon to realize negative pressure, this technique is simple, and energy consumption is low, and the rate of recovery is high, but system can not backwash, the maintaining complex operation, volume is larger, very easily leaks in the running; The tubular ultra-filtration membrane treatment facility is that the tubular ultrafiltration membrane module by high rate of circulating flow consists of, adopt the flow direction of feeding liquid and the vertical cross-flow filtration of pressure direction of film, cross-flow filtration is parallel to the film surface a backflow, this backflow can wash away the pollutant on film surface effectively, but because the particle of silica flour is superfine in the abrasive waste water, very easily be jammed in fenestra, cross-flow can not be taken away the silica flour on film surface, thereby affects membrane flux.Above-mentioned each membrane processing method all can not carry out on-line rinsing, very easily causes film to stop up, and processing abrasive waste water that can not be permanently effective therefore can only be as the auxiliary reference means of abrasive waste water processing.
In view of this, how designing a kind of abrasive waste water reuse, silica powder recovering device of the tube type filter membrance assembly with backwashing function, to increase producing water ratio and to bring the additional economic benefit of energy recovery, is the problem that the insider needs solution badly.
Summary of the invention
In prior art, the easy obstruction of hollow-fiber membrane filter unit, need frequently wash, producing water ratio is lower, energy consumption is larger; Tubular ultra-filtration membrane can not backwash etc. defective, the invention provides a kind of abrasive waste water reuse, silica powder recovering device with the tube type filter membrance assembly.
According to the present invention, a kind of abrasive waste water reuse, silica powder recovering device with the tube type filter membrance assembly is provided, wherein, comprising:
Raw water box is used for holding waste water;
The first carrier pipe, an end is communicated in the lower end of described raw water box;
Circulating pump is arranged on described the first carrier pipe;
The tube type filter membrance assembly is communicated in the other end of described the first carrier pipe;
Produce water tank, be used for storing the treated pure water that obtains;
The second carrier pipe is communicated with described tube type filter membrance assembly and described product water tank;
The 3rd carrier pipe, an end is communicated in the lower end of described raw water box;
Silicon mud retracting device is communicated in the other end of described the 3rd carrier pipe;
The slurry transportation pump is arranged on described the 3rd carrier pipe between described raw water box and the described silicon mud retracting device;
The 4th carrier pipe, an end are communicated in described product water tank and the other end is communicated in described the second carrier pipe;
Backwashing pump is arranged on described the 4th carrier pipe;
Automatic control system is used for controlling control valve, gauge and Water Test Kits on described circulating pump, described slurry transportation pump, described the first carrier pipe, described the second carrier pipe, described the 3rd carrier pipe, the 4th carrier pipe;
Wherein, waste water from described raw water box out through described circulating pump effect, entering described tube type filter membrance assembly purifies, see through described tube type filter membrance assembly from vertical direction after purifying and enter described product water tank, the condensed water that produces is back to described raw water box, condensed water in the described raw water box reaches and enters silicon mud retracting device after the concentration and dewater, and forms mud cake to discharge and to recycle.
Preferably, described tube type filter membrance assembly comprises:
The tube type filter membrance filter element of several inlay type anchor type structures, be provided with micro-filtration membrane and have water inlet end and the water side in each described tube type filter membrance filter element, described water side is perpendicular to the tube wall of described tube type filter membrance filter element, and described water inlet end is communicated with described the first carrier pipe; And
The first tube connector is communicated with two adjacent described tube type filter membrance filter elements.
Preferably, described micro-filtration membrane is carried out backwash
Preferably, the aperture of described micro-filtration membrane is 0.05 μ m.
Preferably, described silicon mud retracting device is any one in filter press, whizzer, the rapid steamer.
Preferably, more comprise:
The 5th carrier pipe is communicated with described the first carrier pipe;
Clean water tank, be used for described tube type filter membrance assembly is carried out Chemical cleaning, described cleaning water tank is arranged on described the 5th carrier pipe; And
Medicine is washed pump, is arranged on described the 5th carrier pipe.
Advantage of the present invention is: 1. purification tank for liquid waste is connected with tube type filter membrance assembly tube type filter membrance assembly and is made of the tube type filter membrance filter element, the tube type filter membrance assembly can provide continuous, stable solid-liquid separation effect, membrane module is high temperature resistant, chemical-resistance is more excellent, can process highly filled waste water, solid contents can reach the 5%(weight ratio).2. the wide runner in the tube type filter membrance assembly is the cross-flow form, is difficult for stopping up, and can regulate flow velocity on a large scale, and film device can carry out backwash simultaneously, the film long service life, and the longest 5-7 that reaches, amortization charge is low.3. film single face compacted zone and thin type supporting layer, the material that it is advantageous that transmembrane pressure is little and see through film can not stop up (this is that hollow membrane and rolled film are not available) inner formation of film, it is supporting layer that the tube type filter membrance assembly adopts phthalic acid glycol ester (PET) material or polypropylene (PP) material, have excellent intensity, also do not have the fracture of wire imagination.4. with abrasive waste water reuse, the silica powder recovering device with the tube type filter membrance assembly of tube type filter membrance assembly, need not strict preliminary treatment requirement to advancing coating materials liquid, more common tubular membrane more can be born the feed liquid of high concentration, high solids content, common tubular membrane concentrate concentration of suspension is not more than 15g/L, the tube type filter membrance assembly can reach 30～40g/L by anti-concentration of suspension, cycles of concentration is high, and the rate of recovery is existing hollow membrane and rolled film 5-10 times.5. because regenerability is strong, and the membrane module cleaning process is simple, clean rear flux response rate 100%.6. do not add any medicament in processing procedure, silicon mud directly can be recycled to refractories industry.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art, apparently, accompanying drawing in the following describes only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 shows according to the abrasive waste water reuse with the tube type filter membrance assembly of the present invention, the structural representation of silica powder recovering device.
Fig. 2 shows the structure for amplifying schematic diagram of the tube type filter membrance filter element among Fig. 1.
The specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.
Fig. 1 shows according to the abrasive waste water reuse with the tube type filter membrance assembly of the present invention, the structural representation of silica powder recovering device.With reference to Fig. 1, comprise with abrasive waste water reuse, the silica powder recovering device 1 of tube type filter membrance assembly: raw water box 10, the first carrier pipe 11, circulating pump 12, tube type filter membrance assembly 13, produce water tank 14, the second carrier pipe 15, the 3rd carrier pipe 16, silicon mud retracting device 17, slurry transportation pump 18, the 4th carrier pipe 19, backwashing pump 20 and automatic control system (not illustrating).Wherein, an end of the first carrier pipe 11 is communicated in the lower end of raw water box 10, and the other end is communicated in tube type filter membrance assembly 13, the first carrier pipes 11 and is used for the waste water in the raw water box 10 are delivered in the tube type filter membrance assembly 13 and purifies.Circulating pump 12 is arranged on the first carrier pipe 11, and circulating pump 12 is used to provide from raw water box 10 waste water out and enters power in the tube type filter membrance assembly 13.15 communicating pipe micro-filtration membrane modules of the second carrier pipe 13 are delivered to product water tank 14 with the pure water that product water tank 14, the second carrier pipes 15 obtain tube type filter membrance assembly 13 purified treatment.One end of the 3rd carrier pipe 16 is communicated in the bottom of raw water box 10, the other end then is communicated with silicon mud retracting device 17, and in the present embodiment, silicon mud retracting device 17 can be filter press, but not as limit, can also be the device for dehydrating sladge waste such as whizzer, rapid steamer.Slurry transportation pump 18 is arranged on the 3rd carrier pipe 16, and between raw water box 10 and silicon mud retracting device 17.
One end of the 4th carrier pipe 19 is communicated in and produces water tank 14, the other end is communicated in the second carrier pipe 15, backwashing pump 20 is arranged on the 4th carrier pipe 19, and backwashing pump 20 is used for driving the pure water that produce in the water tank 14 and enters 15 pairs of tube type filter membrance assemblies of the second carrier pipe 13 through the 4th carrier pipe 19 and carry out backwash.In another embodiment, can also the backwash water tank be set the other end on the 4th carrier pipe 19, be used for tube type filter membrance assembly 13 is carried out backwash.The running of control valve, gauge and Water Test Kits on automatic controlling system circulating pump 12, slurry transportation pump 18, the first carrier pipe 11, the second carrier pipe 15, the 3rd carrier pipe 16, the 4th carrier pipe 19.In addition, in the present embodiment, comprise that also cleaning water tank 21, the 5th carrier pipe 22 and medicine washes pump 23.Wherein, cleaning water tank 21 is used for tube type filter membrance assembly 13 is carried out Chemical cleaning.22 of the 5th carrier pipes are communicated in the first carrier pipe 11 and clean between the water tank 21.Medicine is washed 23 of pumps and is arranged on the 5th carrier pipe 22, is used for driving 21 pairs of tube type filter membrance assemblies of cleaning water tank 13 and carries out the chemistry flushing.
Fig. 2 shows the structure for amplifying schematic diagram of the tube type filter membrance filter element among Fig. 1.In conjunction with reference to Fig. 1 and Fig. 2, tube type filter membrance assembly 13 is to adopt PETG (Polyethyleneterephthalate, be called for short PET) material or polypropylene (Polypropylene, abbreviation PP) porous tubular support of material sintering formation is made of its tube type filter membrance filter element 24 and first tube connector (not illustrating) by several inlay type anchor type structures.Be provided with micro-filtration membrane 241 in each tube type filter membrance filter element 24 and have water inlet end and water side 242, water side 242 is perpendicular to the tube wall of tube type filter membrance filter element 24, and 242 of water inlet ends are communicated in the first carrier pipe 11.Be connected by the first tube connector between two adjacent tube type filter membrance filter elements.The aperture of the micro-filtration membrane 241 in the tube type filter membrance filter element 24 is 0.05 μ m.Tube type filter membrance assembly 13 anti-concentration of suspension can reach 30～40g/L.
Among the present invention with the abrasive waste water reuse of tube type filter membrance assembly, the course of work of silica powder recovering device 1 be: will inject raw water box 10 to the waste water that produces in wafer attenuate, brilliant back-grinding and the wafer cutting process, waste water under the effect of circulating pump 12 through the first carrier pipe 11, enter in the tube type filter membrance assembly 13, filter the formation pure water through each tube type filter membrance filter element 24, pure water 242 out enters the second carrier pipe 15 from the water side, transfers to through the second carrier pipe 15 and produces water tank 14.Waste water is through repeatedly concentrated, form condensed water, condensed water is back to raw water box 10, solid particle in the raw water box 10 forms silicon mud through accumulation after a while, can start slurry transportation pump 18 this moment, makes silicon mud enter silicon mud retracting device 17 by the 3rd carrier pipe 16, and silicon mud is through 17 dehydrations of silicon mud retracting device, form the silicon mud cake, the silicon mud cake is transported reclaimed at last.In said process, under the control of automatic control system, backwashing pump 20 drives the pure water that produces in the water tank 14 and enters the 4th carrier pipe 19, and enter the second carrier pipe 15 from the 4th carrier pipe 19, entered by the water side 242 of the second carrier pipe 15 by each tube type filter membrance filter element 24 again, to finish the backwash that tube type filter membrance assembly 13 is carried out, medicine is washed 21 pairs of tube type filter membrance assemblies 13 of pump 23 driving cleaning water tanks and is utilized medicine to carry out Chemical cleaning.Certainly, in a further embodiment, the pure water that backwashing pump 20 can also drive in the backwash water tank carries out backwash to tube type filter membrance assembly 13.
Advantage of the present invention is: 1. purification tank for liquid waste is connected with tube type filter membrance assembly tube type filter membrance assembly and is made of the tube type filter membrance filter element, the tube type filter membrance assembly can provide continuous, stable solid-liquid separation effect, membrane module is high temperature resistant, chemical-resistance is more excellent, can process highly filled waste water, solid contents can reach the 5%(weight ratio).2. the wide runner in the tube type filter membrance assembly is the cross-flow form, is difficult for stopping up, and can regulate flow velocity on a large scale, and film device can carry out backwash simultaneously, the film long service life, and the longest 5-7 that reaches, amortization charge is low.3. film single face compacted zone and thin type supporting layer, the material that it is advantageous that transmembrane pressure is little and see through film can not stop up (this is that hollow membrane and rolled film are not available) inner formation of film, it is supporting layer that the tube type filter membrance assembly adopts phthalic acid glycol ester (PET) material or polypropylene (PP) material, have excellent intensity, also do not have the fracture of wire imagination.4. with abrasive waste water reuse, the silica powder recovering device with the tube type filter membrance assembly of tube type filter membrance assembly, need not strict preliminary treatment requirement to advancing coating materials liquid, more common tubular membrane more can be born the feed liquid of high concentration, high solids content, common tubular membrane concentrate concentration of suspension is not more than 15g/L, the tube type filter membrance assembly can reach 30～40g/L by anti-concentration of suspension, cycles of concentration is high, and the rate of recovery is existing hollow membrane and rolled film 5-10 times.5. because regenerability is strong, and the membrane module cleaning process is simple, clean rear flux response rate 100%.6. do not add any medicament in processing procedure, silicon mud directly can be recycled to refractories industry.
More than show and described basic principle of the present invention, principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; that describes in above-described embodiment and the specification just illustrates principle of the present invention; the present invention also has various changes and modifications without departing from the spirit and scope of the present invention, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (6)
1. abrasive waste water reuse, silica powder recovering device with a tube type filter membrance assembly is characterized in that, comprising:
Raw water box is used for holding waste water;
The first carrier pipe, an end is communicated in the lower end of described raw water box;
Circulating pump is arranged on described the first carrier pipe;
The tube type filter membrance assembly is communicated in the other end of described the first carrier pipe;
Produce water tank, be used for storing the treated pure water that obtains;
The second carrier pipe is communicated with described tube type filter membrance assembly and described product water tank;
The 3rd carrier pipe, an end is communicated in the lower end of described raw water box;
Silicon mud retracting device is communicated in the other end of described the 3rd carrier pipe;
The slurry transportation pump is arranged on described the 3rd carrier pipe between described raw water box and the described silicon mud retracting device;
The 4th carrier pipe, an end are communicated in described product water tank and the other end is communicated in described the second carrier pipe;
Backwashing pump is arranged on described the 4th carrier pipe;
Automatic control system is used for controlling control valve, gauge and Water Test Kits on described circulating pump, described slurry transportation pump, described the first carrier pipe, described the second carrier pipe, described the 3rd carrier pipe, the 4th carrier pipe;
Wherein, waste water from described raw water box out through described circulating pump effect, entering described tube type filter membrance assembly purifies, see through described tube type filter membrance assembly from vertical direction after purifying and enter described product water tank, the condensed water that produces is back to described raw water box, condensed water in the described raw water box reaches and enters silicon mud retracting device after the concentration and dewater, and forms mud cake to discharge and to recycle.
2. abrasive waste water reuse, silica powder recovering device with the tube type filter membrance assembly as claimed in claim 1 is characterized in that, described tube type filter membrance assembly comprises:
The tube type filter membrance filter element of several inlay type anchor type structures, be provided with micro-filtration membrane and have water inlet end and the water side in each described tube type filter membrance filter element, described water side is perpendicular to the tube wall of described tube type filter membrance filter element, and described water inlet end is communicated with described the first carrier pipe; And
The first tube connector is communicated with two adjacent described tube type filter membrance filter elements.
3. abrasive waste water reuse, silica powder recovering device with the tube type filter membrance assembly as claimed in claim 2 is characterized in that described micro-filtration membrane is carried out backwash.
4. abrasive waste water reuse, silica powder recovering device with the tube type filter membrance assembly as claimed in claim 2 is characterized in that, the aperture of described micro-filtration membrane is 0.05 μ m.
5. abrasive waste water reuse, silica powder recovering device with the tube type filter membrance assembly as claimed in claim 1 is characterized in that, described silicon mud retracting device is any one in filter press, whizzer, the rapid steamer.
6. abrasive waste water reuse, silica powder recovering device with the tube type filter membrance assembly as claimed in claim 1 is characterized in that, more comprise:
The 5th carrier pipe is communicated with described the first carrier pipe;
Clean water tank, be used for described tube type filter membrance assembly is carried out Chemical cleaning, described cleaning water tank is arranged on described the 5th carrier pipe; And
Medicine is washed pump, is arranged on described the 5th carrier pipe.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105238144A CN103028329A (en) | 2012-12-07 | 2012-12-07 | Grinding wastewater reuse and silica powder recovery device with tubular micro-filtration membrane assembly |
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| CN2012105238144A CN103028329A (en) | 2012-12-07 | 2012-12-07 | Grinding wastewater reuse and silica powder recovery device with tubular micro-filtration membrane assembly |
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Cited By (6)
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| CN103539278A (en) * | 2013-10-22 | 2014-01-29 | 浙江开创环保科技有限公司 | Crystal grinding wastewater treatment method and crystal grinding wastewater treatment device |
| CN103771604A (en) * | 2014-01-23 | 2014-05-07 | 山西东方创赢环保科技有限公司 | High-turbidity water treatment system |
| CN103787528A (en) * | 2014-01-23 | 2014-05-14 | 山西东方创赢环保科技有限公司 | Underground movable mine water treatment system for coal mine |
| CN104770507A (en) * | 2015-04-17 | 2015-07-15 | 福建师范大学 | Method for concentrating tealeaf extract by using wide-runner high-temperature-resistant reverse osmosis membrane |
| CN111874996A (en) * | 2020-07-08 | 2020-11-03 | 江苏圣富利环境工程有限公司 | Tubular microfiltration membrane wastewater treatment process |
| CN114667268A (en) * | 2019-11-25 | 2022-06-24 | Ihi 运搬机械株式会社 | Method and apparatus for treating coal drainage |
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| CN103539278A (en) * | 2013-10-22 | 2014-01-29 | 浙江开创环保科技有限公司 | Crystal grinding wastewater treatment method and crystal grinding wastewater treatment device |
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| CN104770507A (en) * | 2015-04-17 | 2015-07-15 | 福建师范大学 | Method for concentrating tealeaf extract by using wide-runner high-temperature-resistant reverse osmosis membrane |
| CN114667268A (en) * | 2019-11-25 | 2022-06-24 | Ihi 运搬机械株式会社 | Method and apparatus for treating coal drainage |
| CN111874996A (en) * | 2020-07-08 | 2020-11-03 | 江苏圣富利环境工程有限公司 | Tubular microfiltration membrane wastewater treatment process |
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Application publication date: 20130410 |