CN101293715A - Micelle reinforced hyperfiltration advanced water purifying method and equipment thereof - Google Patents
Micelle reinforced hyperfiltration advanced water purifying method and equipment thereof Download PDFInfo
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- CN101293715A CN101293715A CNA2008100389974A CN200810038997A CN101293715A CN 101293715 A CN101293715 A CN 101293715A CN A2008100389974 A CNA2008100389974 A CN A2008100389974A CN 200810038997 A CN200810038997 A CN 200810038997A CN 101293715 A CN101293715 A CN 101293715A
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Abstract
The invention relates to a micelle strengthening ultrafiltration advanced water purification method and equipment thereof. The dodecyl benzene sulfonic acid sodium salt is added to the water to be treated, and then the water to be treated after forming micelle is beaten into an ultrafiltration membrane component by a pressure pump and is removed by ultrafiltration. The equipment needed by the micelle strengthening ultrafiltration advanced water purification method comprises an original water tank (1), an agitator (2), a backwashing water tank (6), an ultrafiltration membrane component (10) and (12), a pump, etc. The method has simple technique, low investment and low operation cost, which reduces the engineering cost.
Description
Technical field
The present invention relates to a kind of process for purifying water and equipment thereof, relate in particular to a kind of micelle reinforced hyperfiltration advanced water purifying method and equipment thereof.
Background technology
In recent decades, along with industrial particularly the developing rapidly of manufactures such as organic chemical industry, petrochemical complex, medicine, sterilant and weedicide of modernization, the output and the kind of organic compound grow with each passing day, present known organic compound surpasses 9,000,000 kinds, and increasing with thousands of speed every year.Existing according to estimates 96000 kinds of organism have entered human environment, limited natural environment and human health in serious threat, cause the human tissue organ canceration, distortion and sudden change to occur, even enter biological sexual cell, destroy or change genetic material, force people to close organism problem in the water filling since the seventies.
Since the reform and opening-up; the economic fast development of Chinese society, living standards of the people improve constantly, and people have higher requirement to the water quality of domestic water on the one hand; China's water resources crisis and water pollution are on the rise on the other hand, densely populated this contradiction that more increased the weight of.At present, area, China cities and towns is the handling technology of water supply at water source with the surface water, continues to use the traditional technology of coagulation, precipitation, filtration, chlorine disinfectant for many years, facts have proved that there is big limitation in traditional technology in application process.At first, to little pollution organic matter removal poor effect, traditional water technology mainly suspends and colloidalmaterial to remove in the water, and be controlling index mainly with colourity, turbidity, the total plate count that purifies water outlet, constantly be subjected to the pollution of reasons such as discharge of industrial wastes owing to the water source, make that harmful organic content of little pollution and kind increases considerably in the water of source, the face of land, in this case, traditional coagulation, precipitation, filtration process only can be removed the small part dissolved organic matter, can not satisfy the day by day high standard requirement of people to drinking-water quality; Secondly, traditional technology does not thoroughly reach the chlorine disinfectant of being adopted to organic removal, make precursor reactions such as chlorine and humic acid generate the halohydrocarbon disinfection byproduct (DBP) (DBPs) that tool three causes effect, wherein the harm of haloform (THMs) is particularly outstanding and general, and make tap water have tangible foreign odor flavor, chlorophenol flavor, mould fishy smell.China shows the generaI investigation of national tap water, only has 30% drinking-water quality to meet hygienic standard, has the people more than 65% to drink contaminated water.Source water and tap water application Ames mutagenicity test result to 5 cities, the middle and lower reach of Yangtze River show, no matter be that source water or tap water all have tangible mutagenesis to the TA98 bacterial strain, and the mutagenicity of tap water is stronger than source water, indexs such as oxygen-consumption, total organic carbon (TOC), ammonia nitrogen are high than advanced country's water-quality guideline in the tap water, and halohydrocarbon content surpasses national drinking water standard often.
Because the limitation of traditional face of land water technology has obtained a large amount of application and development to remove the drinking water deep purification technology that little pollution organism is a major objective in the former water in the face of land.Drinking water deep purification technology commonly used is the embrane method advanced purification process of taking as the leading factor with membrane technique, and this technology is combined by pre-treatment, reverse osmosis or nanofiltration membrane usually, complex process, investment and working cost height.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of micelle reinforced hyperfiltration advanced water purifying method and equipment thereof, by adopting tensio-active agent formation micelle that small-molecule substance in the tap water (as metal ions such as environmental hormone, halohydrocarbon disinfection byproduct (DBP) and lead, manganese) is adsorbed or being dissolved in wherein, remove through ultrafiltration then, this method has solved shortcomings such as complex process in the existing conventional art, technical process length, expense height.
Principle of the present invention:
Xiang Shuizhong adds certain amount of surfactant, when its concentration during greater than micelle-forming concentration, (hydrophobic group is inside will to form micelle, hydrophilic group is outside), similar to the hydrophobic group of surfactant molecule as organic chemical structure with character, according to the similar principle that mixes, this organism will be dissolved in the micelle, or the hydrophilic group of organism and tensio-active agent can form hydrogen bond, organism also can be transferred to from water in the micelle, separate by the ultrafiltration micelle that the aperture is bigger then and remove, thereby the small organic molecule in the water is also removed.
Process form according to small molecules environmental hormone class material in the formed removal tap water of this mechanism is: contaminated tap water → add tensio-active agent to form micelle → ultrafiltration.The present invention adopts tensio-active agent formation micelle that small organic molecule in the water (as environmental hormone, halohydrocarbon disinfection byproduct (DBP)) is adsorbed or is dissolved in wherein, remove through ultrafiltration then, being used to form the micellar tensio-active agent is Sodium dodecylbenzene sulfonate SDBS, its critical micelle concentration CMC
SDBS=1.2mmol/L is when concentration will form micelle during greater than micelle-forming concentration.
A kind of micelle reinforced hyperfiltration advanced water purifying method of the present invention comprises the steps:
(1) Sodium dodecylbenzene sulfonate (SDBS) is added in the pending water, the final concentration scope of SDBS in pending water is 3～4mmol/L, is that the agitator of 80～100rps stirs the formation micella with rotating speed;
(2) the pending water behind the formation micella is squeezed into hyperfiltration membrane assembly by force (forcing) pump, and wherein ultra-filtration membrane is a cellulose acetate membrane, working pressure 0.10～0.15Mpa;
(3) descend operation week end of term of 15% at the ultra-filtration membrane flux, device before the ultrafiltration force (forcing) pump is out of service, by chemical jar preparation mass concentration is that 3% citric acid and mass concentration are the complex cleaning and washing agent of 1% hydrogen peroxide combination, compound volume ratio is 1: 1, the ultrafiltration force (forcing) pump enters ultra-filtration membrane the pollutent that adheres in face or the fenestra is carried out the cleaning of 20～40min, and membrane flux is recovered.
The critical micelle concentration of described Sodium dodecylbenzene sulfonate SDBS is CMC
SDBS=1.2mmol/L.
Described hyperfiltration membrane assembly is a hollow fiber film assembly, mould material in the assembly is filled in the synthetic glass shell, the two ends epoxy sealing, constitute membrane module, this kind membrane module has hypertonicity energy and separation performance, membrane module can recoil, and long service life has good heatproof, acid and alkali-resistance, scale resistance; Wherein, the molecular weight cut-off 10000～100000 of ultra-filtration membrane, the pH value that is suitable for: 2～13, the pure water membrane flux is 100～200L/ (m
2H).
The equipment that micelle reinforced hyperfiltration advanced water purifying method of the present invention is required comprises raw water box 1, hyperfiltration membrane assembly 10 and 12, security personnel's filter core 14, water storage tank 17 and dispensing kit 18; Raw water box 1 and dispensing kit 18 are communicated with by peristaltic pump 19, and agitator 2 wherein all is housed; The water outlet of raw water box 1 is communicated with hyperfiltration membrane assembly 10 and 12 by valve 3 controls through water pump 13, security personnel's filter core 14, filters the water purification that obtains and sends into water storage tank 17 by valve 9 controls, and the water-in of water pump 13 discharged or sent back to by concentrated solution by valve 20,21 controls.
The required equipment of described micelle reinforced hyperfiltration advanced water purifying method also includes a back flushing water tank 6, its water-in is communicated with hyperfiltration membrane assembly 10 and 12 by valve 16,7 controls respectively, and the water outlet of back flushing water tank 6 is communicated with the water-in of water pump 13 by valve 5 controls.
Between described water pump 13 and back flushing water tank 6 water tanks under meter 4 is housed, hyperfiltration membrane assembly 10 and 12 pure water inlet are equipped with under meter 8 and valve 11, and the concentrated solution relief outlet is equipped with under meter 22, are communicated with by valve 15 controls between the hyperfiltration membrane assembly 10 and 12.
Characteristics that the present invention has and beneficial effect:
(1) micelle reinforced hyperfiltration advanced water purifying technology of the present invention can substitute investment and higher nanofiltration or the reverse osmosis of working cost within the specific limits, and technology is simple, and investment and working cost are low;
(2) micelle reinforced hyperfiltration advanced water purifying technology of the present invention can effectively remove in the tap water small-molecule substance such as environmental hormone, halohydrocarbon disinfection byproduct (DBP), the TOC clearance in the tap water is reached 55～63%, Fe
2+, Mn
2+Clearance Deng metal ion reaches 80～90%;
(3) the micelle reinforced hyperfiltration advanced water purifying technology that proposes of the present invention has alleviated the pollution load of charged ultra-filtration membrane greatly, has reduced film and has polluted the probability that takes place;
(4) polyether-ether-ketone of the used independent development of the present invention and the blend bear electro ultrafiltration film of polyethersulfone, polyether-ether-ketone and polysulfones, working pressure 0.1Mpa, because the charged repulsive interaction of charged ultra-filtration membrane surfactivity layer, make that charged membrane is not only to hold back process based on the physics of pore size to the separating behavior of negatively charged ion micelle, also comprises the electrostatic adhesion and the repulsive interaction of electric charge.
Description of drawings
Fig. 1 is the sectional view of equipment required for the present invention, and wherein, 1 is raw water box, 2 is agitator, 3,5,7,9,11,15,16,20,21 is valve, and 4,8,22 is under meter, and 6 are the back flushing water tank, 10,12 is hyperfiltration membrane assembly, 13 is water pump, and 14 are security personnel's filter core, and 17 is water storage tank, 18 is dispensing kit, and 19 is peristaltic pump.
Embodiment
Embodiment 1
Pending water aspirates from water tank by promoting water pump 13 through raw water box 1, tensio-active agent is added by peristaltic pump 19, mix in raw water box 1 with former water, mixing time is 3～5min, the suction water outlet enters hyperfiltration membrane assembly 10,12 through connecting tube again by security personnel's filter core 14, and ultrafiltration membrane permeate water enters water storage tank 17, concentrated solution can be before valve 20 is back to pressure pump 13 mixes with water inlet and enters the ultra-filtration membrane device again and handle, also can be by valve 21 discharges.
Test former water from the laboratory artificial distribution, two kinds of environmental hormone materials of nonyl phenol and dihydroxyphenyl propane are as removing target compound, the two total concn is 50ug/L, pending water is aspirated from water tank by lift pump 13 through raw water box 1, Sodium dodecylbenzene sulfonate SDBS is added (final concentration of SDBS in pending water is 4mmol/L) in the pending water, with rotating speed is that the agitator of 90rps stirs, form micella, pending water behind the formation micella is squeezed into hyperfiltration membrane assembly by force (forcing) pump, ultra-filtration membrane working pressure 0.1MPa wherein, ultrafiltration membrane permeate water enters water storage tank 17, concentrated solution can be before valve 20 is back to pressure pump 13 mixes with water inlet and enters the ultra-filtration membrane device again and handle, also can be by valve 21 discharges.
Investigate through 10 months practices, find the total system operational excellence, water outlet environmental hormone material concentration＜0.5ug/L.
Claims (6)
1. a micelle reinforced hyperfiltration advanced water purifying method comprises the steps:
(1) Sodium dodecylbenzene sulfonate SDBS is added in the pending water, the final concentration of SDBS in pending water is 3～4mmol/L, is that the agitator of 80～100rps stirs with rotating speed, forms micella;
(2) the pending water behind the formation micella is squeezed into hyperfiltration membrane assembly by force (forcing) pump, and wherein ultra-filtration membrane is a cellulose acetate membrane, working pressure 0.10～0.15Mpa;
(3) descend operation week end of term of 15% at the ultra-filtration membrane flux, device before the ultrafiltration force (forcing) pump is out of service, by chemical jar preparation mass concentration is that 3% citric acid and mass concentration are the complex cleaning and washing agent of 1% hydrogen peroxide combination, compound volume ratio is 1: 1, the ultrafiltration force (forcing) pump enters ultra-filtration membrane the pollutent that adheres in face or the fenestra is carried out the cleaning of 20～40min, and membrane flux is recovered.
2. micelle reinforced hyperfiltration advanced water purifying method as claimed in claim 1 is characterized in that, the critical micelle concentration CMC of described Sodium dodecylbenzene sulfonate SDBS
SDBS=1.2mmol/L.
3. micelle reinforced hyperfiltration advanced water purifying method as claimed in claim 1 is characterized in that described hyperfiltration membrane assembly is a hollow fiber film assembly, and the mould material in the assembly is filled in the synthetic glass shell, and the two ends epoxy sealing constitutes membrane module; The molecular weight cut-off 10000～100000 of ultra-filtration membrane, the pH value that is suitable for is 2～13, the pure water membrane flux is 100～200L/ (m
2H).
4. the equipment of a micelle reinforced hyperfiltration advanced water purifying method, comprise raw water box (1), hyperfiltration membrane assembly (10) and (12), security personnel's filter core (14), water storage tank (17) and dispensing kit (18), it is characterized in that, described raw water box (1) and dispensing kit (18) are communicated with by peristaltic pump (19), agitator (2) wherein all is housed, the water outlet of described raw water box (1) is controlled by valve (3), through water pump (13), security personnel's filter cores (14) are communicated with hyperfiltration membrane assembly (10) and (12), filter the water purification that obtains and send into water storage tank (17) by valve (9) control, and concentrated solution is by valve (20), (21) control the water-in of discharging or sending water pump (13) back to.
5. as the equipment of a kind of micelle reinforced hyperfiltration advanced water purifying method as described in the claim 4, it is characterized in that, also include a back flushing water tank (6), its water-in is communicated with hyperfiltration membrane assembly (10) and (12) by valve (16), (7) control respectively, and the water outlet of back flushing water tank (6) is communicated with the water-in of water pump (13) by valve (5) control.
6. as the equipment of a kind of micelle reinforced hyperfiltration advanced water purifying method as described in the claim 5, it is characterized in that, between described water pump (13) and back flushing water tank (6) water tank under meter (4) is housed, the pure water inlet of hyperfiltration membrane assembly (10) and (12) is equipped with under meter (8) and valve (11), the concentrated solution relief outlet is equipped with under meter (22), is communicated with by valve (15) control between hyperfiltration membrane assembly (10) and (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100389974A CN101293715A (en) | 2008-06-16 | 2008-06-16 | Micelle reinforced hyperfiltration advanced water purifying method and equipment thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100389974A CN101293715A (en) | 2008-06-16 | 2008-06-16 | Micelle reinforced hyperfiltration advanced water purifying method and equipment thereof |
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| CN101293715A true CN101293715A (en) | 2008-10-29 |
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| CNA2008100389974A Pending CN101293715A (en) | 2008-06-16 | 2008-06-16 | Micelle reinforced hyperfiltration advanced water purifying method and equipment thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102249453A (en) * | 2011-05-17 | 2011-11-23 | 南京工业大学 | Method for treating fire-fighting wastewater containing benzene series and fluorine protein |
| CN103505937A (en) * | 2013-10-20 | 2014-01-15 | 丹阳市正大油脂有限公司 | Ultrafiltration membrane stirring and filtering device |
| CN103611340A (en) * | 2013-11-29 | 2014-03-05 | 利丰工程技术(天津)有限公司 | Walnut shell filter cleaning system |
| CN104370340A (en) * | 2014-10-23 | 2015-02-25 | 兰州交通大学 | Method for treating cadmium (II)-phenol combined pollution and recovery method of concentrated liquor |
| CN105731674A (en) * | 2016-03-09 | 2016-07-06 | 哈尔滨工业大学 | Technology for treating lead-bearing wastewater by Gemini micellar-enhanced ultrafiltration |
| CN110790344A (en) * | 2019-07-26 | 2020-02-14 | 上海城市水资源开发利用国家工程中心有限公司 | Novel drinking water advanced treatment and purification device and method |
-
2008
- 2008-06-16 CN CNA2008100389974A patent/CN101293715A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102249453A (en) * | 2011-05-17 | 2011-11-23 | 南京工业大学 | Method for treating fire-fighting wastewater containing benzene series and fluorine protein |
| CN102249453B (en) * | 2011-05-17 | 2013-01-23 | 南京工业大学 | Method for treating fire-fighting wastewater containing benzene series and fluorine protein |
| CN103505937A (en) * | 2013-10-20 | 2014-01-15 | 丹阳市正大油脂有限公司 | Ultrafiltration membrane stirring and filtering device |
| CN103611340A (en) * | 2013-11-29 | 2014-03-05 | 利丰工程技术(天津)有限公司 | Walnut shell filter cleaning system |
| CN103611340B (en) * | 2013-11-29 | 2015-05-13 | 利丰工程技术(天津)有限公司 | Walnut shell filter cleaning system |
| CN104370340A (en) * | 2014-10-23 | 2015-02-25 | 兰州交通大学 | Method for treating cadmium (II)-phenol combined pollution and recovery method of concentrated liquor |
| CN105731674A (en) * | 2016-03-09 | 2016-07-06 | 哈尔滨工业大学 | Technology for treating lead-bearing wastewater by Gemini micellar-enhanced ultrafiltration |
| CN105731674B (en) * | 2016-03-09 | 2018-05-22 | 哈尔滨工业大学 | A kind of technique of Gemini micellar-enhanced ultrafiltrations method processing lead waste water |
| CN110790344A (en) * | 2019-07-26 | 2020-02-14 | 上海城市水资源开发利用国家工程中心有限公司 | Novel drinking water advanced treatment and purification device and method |
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Open date: 20081029 |