CN104147938A - Method for reinforcing performance of ultrafiltration membrane by using bismuth-modified zeolite precoated layer - Google Patents
Method for reinforcing performance of ultrafiltration membrane by using bismuth-modified zeolite precoated layer Download PDFInfo
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- CN104147938A CN104147938A CN201410421245.1A CN201410421245A CN104147938A CN 104147938 A CN104147938 A CN 104147938A CN 201410421245 A CN201410421245 A CN 201410421245A CN 104147938 A CN104147938 A CN 104147938A
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- modified zeolite
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Abstract
The invention discloses a method for reinforcing performances of an ultrafiltration membrane by using a bismuth-modified zeolite precoated layer. A bismuth-modified zeolite is added into raw water through a drug adding device. A solution containing a bismuth-modified zeolite precoated layer material and the raw water pass through an ultrafiltration membrane assembly so that a more effective precoated layer can form on a surface of the ultrafiltration membrane. Thick water from the ultrafiltration membrane flows back to a raw water tank. After one filtering period is finished, the ultrafiltration membrane is subjected to a backwashing process and a positive washing process through water. The method is easy to control, is low in requirement of equipment, and can not only effectively alleviate a decrease speed of membrane flux and improve an anti-pollution capability of the ultrafiltration membrane but also increase removal efficiency on organic substances.
Description
Technical field
The invention belongs to advanced treatment of wastewater and reuse project field, relate to a kind of method of milipore filter advanced treating.
Background technology
Membrane technology is in an increasingly wide range of applications in advanced treatment of wastewater and reuse field, hyperfiltration technique advantage be simple to operate, cost is relatively low, do not undergo phase transition etc., and ultrafiltration apparatus floor space is little, system energy consumption is low, operating cost is low, can effectively improve the performance of enterprises, it is water treatment field one of most important hot spot technology over nearly 20 years that ultrafiltration membrane technique has become.Ultrafiltration group technology has larger effect on to the clearance of waste water improving ultrafiltration, and many researchers find Powdered Activated Carbon and ultrafiltration coupling, can improve organic clearance by absorption.By the coupling of ultrafiltration-reverse osmosis membrane, be also the normal group technology adopting in current membrane technology field, treatment effect is better, and milipore filter can reduce the pollution of follow-up reverse osmosis membrane, but the operation of process certain hour, milipore filter also can inevitably be polluted.Therefore, still there is certain limitation in milipore filter in actual motion, and a critical problem in its application is how effectively controlling diaphragm pollutes, and extends the service life of milipore filter, and meanwhile, milipore filter also exists the defect low to organic removal rate.
Summary of the invention
For the problems referred to above that exist in hyperfiltration advanced processing and reuse method in prior art, the invention provides a kind of method of utilizing bismuth modified zeolite precoated shet enhancing ultrafiltration film properties.
For solving the problems of the technologies described above, the technical solution used in the present invention is as follows:
Utilize the method for bismuth modified zeolite precoated shet enhancing ultrafiltration film properties, treatment step is: by chemicals dosing plant, in former water, add bismuth modified zeolite pre-coating material, bismuth-containing modified zeolite pre-coating material solution and former water together pass through hyperfiltration membrane assembly, on milipore filter surface, effectively form precoated shet, milipore filter concentrate recirculation is to former pond, after finish a filter cycle, water carries out backwash and is just rinsing milipore filter.
The preparation method of above-mentioned bismuth modified zeolite pre-coating material is as follows:
(1) by particle diameter, be that 300 ~ 2000 object zeolites be take solid-to-liquid ratio and added in 0.05 ~ 0.2 mol/L sulfuric acid as 1:10 ~ 1:5, hunting speed with 100 ~ 300r/min is dynamically flooded 12 ~ 36h, pour out supernatant, then wash 1 ~ 2 time with pure water, pour out after supernatant and dry under 80 ~ 100 ° of C conditions;
(2) zeolite step (1) being made adds and fills in 0.01 ~ 0.1mol/L bismuth nitrate solution with solid-to-liquid ratio 1:10 ~ 1:5, with the dynamic dipping 12 ~ 36h of the hunting speed of 100 ~ 300r/min, pours out after supernatant and dries under 80 ~ 100 ° of C conditions;
(3) zeolite step (2) being made is roasting 2-4h under 300 ~ 500 ° of C conditions, obtains bismuth modified zeolite pre-coating material.
As a further improvement on the present invention, in described chemicals dosing plant, bismuth-containing modified zeolite pre-coating material particle diameter is 300 ~ 2000 orders, and chemical feeding quantity is 50 ~ 500 mg/L.
As a further improvement on the present invention, described milipore filter is hollow-fibre membrane, and milipore filter concentrate recirculation ratio is 0% ~ 10%.
As a further improvement on the present invention, be 0.5 hour to 3.5 hours described filter cycle.
As a further improvement on the present invention, described water is film filtration effluent, and backwash and positive washing time are 10 seconds to 80 seconds, and backwash and positive flushing flow rate are 1.5 times to 3.0 times of ultrafiltration flow of inlet water.
Beneficial effect of the present invention:
Adopt the method for bismuth modified zeolite precoated shet enhancing ultrafiltration film properties of the present invention, zeolite is by after bismuth modification, can widen and dredge the duct, inside of zeolite, increase the adsorption activity center of zeolite, for enhancing ultrafiltration film properties, on milipore filter surface, form more effective precoated shet, pollution abatement thing and the direct of film contact.
The present invention utilizes the method for bismuth modified zeolite precoated shet enhancing ultrafiltration film properties, compare with traditional direct method of filtering of milipore filter, this method operation is easy to control, and equipment requirement is low, can improve the contamination resistance of milipore filter, can improve organic removal efficiency again.For advanced treatment of wastewater and reuse, can effectively alleviate the decrease speed of milipore filter flux, delay the pollution of film, the contamination resistance of reinforced film, improves the removal effect of milipore filter to water quality index simultaneously greatly.
Accompanying drawing explanation
Fig. 1 is that membrane flux of the present invention changes comparison diagram.
Fig. 2 is COD of the present invention (COD) clearance comparison diagram.
Fig. 3 is total nitrogen of the present invention (TN) clearance comparison diagram.
The specific embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
The present invention utilizes the method for bismuth modified zeolite precoated shet enhancing ultrafiltration film properties, in former water, to add bismuth modified zeolite pre-coating material by chemicals dosing plant, bismuth-containing modified zeolite pre-coating material solution and former water together pass through hyperfiltration membrane assembly, on milipore filter surface, effectively form precoated shet, milipore filter concentrate recirculation is to former pond, after finish a filter cycle, water carries out backwash and is just rinsing milipore filter.
As preferred version of the present invention, the preparation method of bismuth modified zeolite pre-coating material is as follows:
(1) by particle diameter, be that 300 ~ 2000 object zeolites be take solid-to-liquid ratio and added in 0.05 ~ 0.2 mol/L sulfuric acid as 1:10 ~ 1:5, hunting speed with 100 ~ 300r/min is dynamically flooded 12 ~ 36h, pour out supernatant, then wash 1 ~ 2 time with pure water, pour out after supernatant and dry under 80 ~ 100 ° of C conditions;
(2) zeolite step (1) being made adds and fills in 0.01 ~ 0.1mol/L bismuth nitrate solution with solid-to-liquid ratio 1:10 ~ 1:5, with the dynamic dipping 12 ~ 36h of the hunting speed of 100 ~ 300r/min, pours out after supernatant and dries under 80 ~ 100 ° of C conditions;
(3) zeolite step (2) being made is roasting 2-4h under 300 ~ 500 ° of C conditions, obtains bismuth modified zeolite pre-coating material.
As preferred version of the present invention, wherein, bismuth-containing modified zeolite pre-coating material particle diameter is 300 ~ 2000 orders, and chemical feeding quantity is 50 ~ 500 mg/L; Milipore filter is hollow-fibre membrane, and milipore filter concentrate recirculation ratio is 0% ~ 10%; Be 0.5 hour to 3.5 hours filter cycle; Water is film filtration effluent, and backwash and positive washing time are 10 seconds to 80 seconds, and backwash and positive flushing flow rate are 1.5 times to 3.0 times of ultrafiltration flow of inlet water.
contrast case 1(direct ultra-filtration is write a Chinese character in simplified form UF):
Yuan Shuiweimou trade effluent treatment plant tail water (COD 58mg/L, TN 19.2mg/L).Former water directly passes through hyperfiltration membrane assembly, milipore filter is hollow-fibre membrane, milipore filter concentrate recirculation ratio is 3%, milipore filter concentrate recirculation is to former pond, be 3 hours filter cycle, after finish a filter cycle, adopts film filtration effluent that milipore filter is carried out successively backwash and just rinsed, backwash and positive washing time are 50 seconds, and backwash and positive flushing flow rate are 2 times of ultrafiltration flow of inlet water.Filter 4 cycles, membrane flux changes as shown in Figure 1, and major pollutants clearance as shown in Figures 2 and 3.
contrast case 2(only utilize zeolite precoated shet to improve the method for milipore filter performance, write a Chinese character in simplified form Z-UF):
Yuan Shuiweimou trade effluent treatment plant tail water (COD 58mg/L, TN 19.2mg/L).By chemicals dosing plant, in former water, add unmodified natural zeolite, zeolitic material solution and former water together pass through hyperfiltration membrane assembly, milipore filter is hollow-fibre membrane, milipore filter concentrate recirculation ratio is 3%, and milipore filter concentrate recirculation is to former pond, and be 3 hours filter cycle, after finish a filter cycle, adopt film filtration effluent that milipore filter is carried out successively backwash and just rinsed, backwash and positive washing time are 50 seconds, and backwash and positive flushing flow rate are 2 times of ultrafiltration flow of inlet water.Filter 4 cycles, membrane flux changes as shown in Figure 1, and major pollutants clearance as shown in Figures 2 and 3, is compared direct ultra-filtration, can alleviate the decrease speed of milipore filter flux, but the clearance of COD and TN only improves respectively 41.6% and 40.5%.
embodiment 1(utilize the method for bismuth modified zeolite precoated shet enhancing ultrafiltration film properties of the present invention, write a Chinese character in simplified form 0.03 Bi-Z-UF):
Yuan Shuiweimou trade effluent treatment plant tail water (COD 58mg/L, TN 19.2mg/L).The preparation method of bismuth modified zeolite pre-coating material is as follows: (1) is that 1000 object zeolites be take solid-to-liquid ratio and added in 0.1 mol/L sulfuric acid as 1:5 by particle diameter, hunting speed with 20r/min is dynamically flooded 18h, pour out supernatant, with pure water, wash 1 time again, pour out after supernatant and dry under 85 ° of C conditions; (2) zeolite step (1) being made adds and fills in 0.03mol/L bismuth nitrate solution with solid-to-liquid ratio 1:5, with the hunting speed of 200r/min, dynamically floods 18h, pours out after supernatant and dries under 85 ° of C conditions; (3) zeolite step (2) being made is roasting 3h under 450 ° of C conditions, obtains bismuth modified zeolite pre-coating material.By chemicals dosing plant, in former water, add bismuth modified zeolite pre-coating material, zeolitic material solution and former water together pass through hyperfiltration membrane assembly, milipore filter is hollow-fibre membrane, milipore filter concentrate recirculation ratio is 3%, and milipore filter concentrate recirculation is to former pond, and be 3 hours filter cycle, after finish a filter cycle, adopt film filtration effluent that milipore filter is carried out successively backwash and just rinsed, backwash and positive washing time are 50 seconds, and backwash and positive flushing flow rate are 2 times of ultrafiltration flow of inlet water.Filter 4 cycles, membrane flux changes as shown in Figure 1, and major pollutants clearance as shown in Figures 2 and 3, is compared direct ultra-filtration, can effectively alleviate the decrease speed of milipore filter flux, and the clearance of COD and TN has improved respectively 102.5% and 103.8%.
embodiment 2(utilize the method for bismuth modified zeolite precoated shet enhancing ultrafiltration film properties of the present invention, write a Chinese character in simplified form 0.08 Bi-Z-UF):
Yuan Shuiweimou trade effluent treatment plant tail water (COD 58mg/L, TN 19.2mg/L).The preparation method of bismuth modified zeolite pre-coating material is as follows: (1) is that 1000 object zeolites be take solid-to-liquid ratio and added in 0.1 mol/L sulfuric acid as 1:5 by particle diameter, hunting speed with 20r/min is dynamically flooded 18h, pour out supernatant, with pure water, wash 1 time again, pour out after supernatant and dry under 85 ° of C conditions; (2) zeolite step (1) being made adds and fills in 0.08mol/L bismuth nitrate solution with solid-to-liquid ratio 1:5, with the hunting speed of 200r/min, dynamically floods 18h, pours out after supernatant and dries under 85 ° of C conditions; (3) zeolite step (2) being made is roasting 3h under 450 ° of C conditions, obtains bismuth modified zeolite pre-coating material.By chemicals dosing plant, in former water, add bismuth modified zeolite pre-coating material, zeolitic material solution and former water together pass through hyperfiltration membrane assembly, milipore filter is hollow-fibre membrane, milipore filter concentrate recirculation ratio is 3%, and milipore filter concentrate recirculation is to former pond, and be 3 hours filter cycle, after finish a filter cycle, adopt film filtration effluent that milipore filter is carried out successively backwash and just rinsed, backwash and positive washing time are 50 seconds, and backwash and positive flushing flow rate are 2 times of ultrafiltration flow of inlet water.Filter 4 cycles, membrane flux changes as shown in Figure 1, and major pollutants clearance as shown in Figures 2 and 3, is compared direct ultra-filtration, can effectively alleviate the decrease speed of milipore filter flux, and the clearance of COD and TN has improved respectively 116.8% and 119.2%.
As fully visible, utilize the method for this bismuth modified zeolite precoated shet enhancing ultrafiltration film properties, compare direct ultra-filtration and only utilize zeolite precoated shet to improve the method for milipore filter performance, can more effectively alleviate the decrease speed of membrane flux, delay the pollution of film, greatly improve the removal effect of film to water quality index simultaneously.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention.All any modifications of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.
Claims (6)
1. utilize the method for bismuth modified zeolite precoated shet enhancing ultrafiltration film properties, it is characterized in that: treatment step is: by chemicals dosing plant, in former water, add bismuth modified zeolite pre-coating material, bismuth-containing modified zeolite pre-coating material solution and former water together pass through hyperfiltration membrane assembly, on milipore filter surface, effectively form precoated shet, milipore filter concentrate recirculation is to former pond, after finish a filter cycle, water carries out backwash and is just rinsing milipore filter.
2. the method for utilizing bismuth modified zeolite precoated shet enhancing ultrafiltration film properties according to claim 1, is characterized in that: the preparation method of described bismuth modified zeolite pre-coating material is:
(1) by particle diameter, be that 300 ~ 2000 object zeolites be take solid-to-liquid ratio and added in 0.05 ~ 0.2 mol/L sulfuric acid as 1:10 ~ 1:5, hunting speed with 100 ~ 300r/min is dynamically flooded 12 ~ 36h, pour out supernatant, then wash 1 ~ 2 time with pure water, pour out after supernatant and dry under 80 ~ 100 ° of C conditions;
(2) zeolite step (1) being made adds and fills in 0.01 ~ 0.1mol/L bismuth nitrate solution with solid-to-liquid ratio 1:10 ~ 1:5, with the dynamic dipping 12 ~ 36h of the hunting speed of 100 ~ 300r/min, pours out after supernatant and dries under 80 ~ 100 ° of C conditions;
(3) zeolite step (2) being made is roasting 2-4h under 300 ~ 500 ° of C conditions, obtains bismuth modified zeolite pre-coating material.
3. the method for utilizing bismuth modified zeolite precoated shet enhancing ultrafiltration film properties according to claim 1, is characterized in that: in described chemicals dosing plant, bismuth modified zeolite pre-coating material particle diameter is 300 ~ 2000 orders, and chemical feeding quantity is 50 ~ 500 mg/L.
4. the method for utilizing bismuth modified zeolite precoated shet enhancing ultrafiltration film properties according to claim 1, is characterized in that: described milipore filter is hollow-fibre membrane, and milipore filter concentrate recirculation ratio is 0% ~ 10%.
5. the method for utilizing bismuth modified zeolite precoated shet enhancing ultrafiltration film properties according to claim 1, is characterized in that: be 0.5 hour to 3.5 hours described filter cycle.
6. the method for utilizing bismuth modified zeolite precoated shet enhancing ultrafiltration film properties according to claim 1, it is characterized in that: described water is film filtration effluent, backwash and positive washing time are 10 seconds to 80 seconds, and backwash and positive flushing flow rate are 1.5 times to 3.0 times of ultrafiltration flow of inlet water.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107311271A (en) * | 2017-07-13 | 2017-11-03 | 胜利油田森诺胜利工程有限公司 | A kind of graphene film filter method for oily waste water treatment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6916454B2 (en) * | 2001-03-30 | 2005-07-12 | Siemens Westinghouse Power Corporation | Metal gas separation membrane |
| CN101224357A (en) * | 2007-10-26 | 2008-07-23 | 东华大学 | Two-stage dynamic membrane filtering method for printing and dyeing wastewater recycling |
| EP2604330A1 (en) * | 2011-12-16 | 2013-06-19 | Samsung Electronics Co., Ltd | Semi-permeable separation membrane including coated nanoporous particles in a polymer matrix, and method of manufacturing the same |
| CN103964619A (en) * | 2014-05-23 | 2014-08-06 | 江苏省环境科学研究院 | Advanced treatment and reuse method of pre-coated membrane of tail water of sewage plant |
-
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- 2014-08-26 CN CN201410421245.1A patent/CN104147938B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6916454B2 (en) * | 2001-03-30 | 2005-07-12 | Siemens Westinghouse Power Corporation | Metal gas separation membrane |
| CN101224357A (en) * | 2007-10-26 | 2008-07-23 | 东华大学 | Two-stage dynamic membrane filtering method for printing and dyeing wastewater recycling |
| EP2604330A1 (en) * | 2011-12-16 | 2013-06-19 | Samsung Electronics Co., Ltd | Semi-permeable separation membrane including coated nanoporous particles in a polymer matrix, and method of manufacturing the same |
| CN103964619A (en) * | 2014-05-23 | 2014-08-06 | 江苏省环境科学研究院 | Advanced treatment and reuse method of pre-coated membrane of tail water of sewage plant |
Non-Patent Citations (2)
| Title |
|---|
| 张仁江 等: "吸附/催化氧化协同技术脱除水体中氨氮的研究", 《工业水处理》 * |
| 白永刚 等: "预涂膜工艺应用于超滤膜系统", 《环境科学研究》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107311271A (en) * | 2017-07-13 | 2017-11-03 | 胜利油田森诺胜利工程有限公司 | A kind of graphene film filter method for oily waste water treatment |
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