CN110054287A - A method of passing through control mixed liquor characteristics decelerating membrane pollution in SNAD technique - Google Patents
A method of passing through control mixed liquor characteristics decelerating membrane pollution in SNAD technique Download PDFInfo
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- CN110054287A CN110054287A CN201910396596.4A CN201910396596A CN110054287A CN 110054287 A CN110054287 A CN 110054287A CN 201910396596 A CN201910396596 A CN 201910396596A CN 110054287 A CN110054287 A CN 110054287A
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- mixed liquor
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- 239000012528 membrane Substances 0.000 title claims abstract description 53
- 238000000034 method Methods 0.000 title claims abstract description 41
- XUHVCHNJCBBXMP-UHFFFAOYSA-M sodium;10-[(2-hydroxybenzoyl)amino]decanoate Chemical compound [Na+].OC1=CC=CC=C1C(=O)NCCCCCCCCCC([O-])=O XUHVCHNJCBBXMP-UHFFFAOYSA-M 0.000 title claims abstract description 21
- 239000010802 sludge Substances 0.000 claims abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 10
- 230000004907 flux Effects 0.000 claims abstract description 7
- 239000007788 liquid Substances 0.000 claims description 9
- 229910052760 oxygen Inorganic materials 0.000 claims description 6
- 239000001301 oxygen Substances 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 claims description 4
- 229910052799 carbon Inorganic materials 0.000 claims description 4
- 239000008103 glucose Substances 0.000 claims description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- 239000011159 matrix material Substances 0.000 claims description 3
- 239000010801 sewage sludge Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 2
- 230000014759 maintenance of location Effects 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims description 2
- 238000009285 membrane fouling Methods 0.000 abstract description 3
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 230000008569 process Effects 0.000 description 5
- 239000003344 environmental pollutant Substances 0.000 description 3
- 150000004676 glycans Chemical class 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- 229920001282 polysaccharide Polymers 0.000 description 3
- 239000005017 polysaccharide Substances 0.000 description 3
- 102000004169 proteins and genes Human genes 0.000 description 3
- 108090000623 proteins and genes Proteins 0.000 description 3
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- 235000019270 ammonium chloride Nutrition 0.000 description 1
- WQZGKKKJIJFFOK-VFUOTHLCSA-N beta-D-glucose Chemical compound OC[C@H]1O[C@@H](O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-VFUOTHLCSA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 125000002573 ethenylidene group Chemical group [*]=C=C([H])[H] 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 235000001727 glucose Nutrition 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910000403 monosodium phosphate Inorganic materials 0.000 description 1
- 235000019799 monosodium phosphate Nutrition 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 235000002639 sodium chloride Nutrition 0.000 description 1
- AJPJDKMHJJGVTQ-UHFFFAOYSA-M sodium dihydrogen phosphate Chemical compound [Na+].OP(O)([O-])=O AJPJDKMHJJGVTQ-UHFFFAOYSA-M 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/28—Anaerobic digestion processes
- C02F3/2853—Anaerobic digestion processes using anaerobic membrane bioreactors
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2203/00—Apparatus and plants for the biological treatment of water, waste water or sewage
- C02F2203/006—Apparatus and plants for the biological treatment of water, waste water or sewage details of construction, e.g. specially adapted seals, modules, connections
-
- 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
- C02F2209/02—Temperature
-
- 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
- C02F2209/06—Controlling or monitoring parameters in water treatment pH
-
- 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
- C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
-
- 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
- C02F2209/22—O2
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/14—Maintenance of water treatment installations
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Microbiology (AREA)
- Biodiversity & Conservation Biology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses a kind of by the method for control mixed liquor characteristics decelerating membrane pollution in SNAD technique, by SNAD technique in conjunction with MBR, realizes decelerating membrane pollution by parameters such as SMP, EPS, viscosity, relative hydrophobicities in control sludge mixing.The present invention can reduce membrane fouling rate, the fouling membrane period was up to 100 days by adjusting the pollution factor in mixed liquor；The film being contaminated can restore the 95% of former membrane flux after clear water is washed.In addition, technological operation provided by the invention is simple, is conducive to significantly reduce operating cost, reduces energy consumption.
Description
Technical field
The invention belongs to technical field of sewage, and in particular to one kind passes through control mixed liquor characteristics in SNAD technique
The method of decelerating membrane pollution.
Background technique
Membrane bioreactor (membrane bioreactor, MBR) has micro-organism treatment process and membrane separation technique
The characteristics of efficient process is reached to waste water is combined, good, sludge produces more traditional biological treatment with effluent quality
Measure low advantage.Under micro-oxygen conditions, MBR is combined with SNAD technique, with occupied area, few, easily operated control etc. is excellent
Point.But there is a problem of that maximum is fouling membrane for MBR operation stability and process economy.The cleaning and replacement nothing of membrane module
Doubting will increase operating cost, and the research to cause of membrane fouling and its influence factor is so that find suitable service condition, this is to mentioning
It is significant to reduce operating cost for high film service efficiency.
Summary of the invention
Object of the present invention is under micro- oxygen MBR membrane bioreactor SNAD process conditions, use membrane aperture poly- for 0.3 μm
Vinylidene hollow-fibre membrane (PVDF) component detects fouling membrane variation by TMP, passes through using film constant output flow as standard
Fouling membrane factor in mud mixed liquid is controlled with decelerating membrane pollution rate:
A method of passing through control mixed liquor characteristics decelerating membrane pollution in SNAD technique, which is characterized in that by SNAD
Technique realizes decelerating membrane pollution in conjunction with MBR, through SMP, EPS, viscosity, relative hydrophobicity parameter in control sludge mixing.Film
The period is polluted up to 100 days；The film being contaminated can restore the 95% of former membrane flux after clear water is washed.
Further, membrane flux is 7.5L/ (m2H), the carbon source in using glucose as water inlet matrix, influent COD are
200mg/L, dissolved oxygen control is in 0.3-0.6mg/L in reactor, and pH value is in 7.8-8.1, and temperature is at 35 DEG C.
Further, sludge state has two kinds of existing ways of wadding body and particle, using the fortune of high sludge concentration and underload
Line mode, sludge concentration 15.0-16.5g/L, by membrane module effect by sludge all retention in the reactor, sludge age without
Limit for length, membrane module use interval water-out manners, and every water outlet 12min rests 3min.
Further, SMP concentration is in 4.5-7mg/L in mud mixed liquid, and EPS concentration is in 90-130mg/L, sludge mixing
PN/PS range is 0.1-1.3 in SMP in liquid, and PN/PS range is 1.5-3 in EPS.Specifically, can be by protein and polysaccharide summation
It is considered as SMP and EPS concentration.
Further, sewage sludge viscosity is 0.7-0.8mPa.s in mixed liquor.
Further, with the increase of membrane pollution resistance, PN/PS ratio increases in LB, mud mixed liquid relative hydrophobicity
RH is controlled in 35%-60%.
Further, in mixed liquor Zeta potential in -13.2mV~-18.2mV.The increase of Zeta potential absolute value causes
Sludge intermolecular electrostatic repulsion increases, therefore need to be controlled in a certain range.
The advantages of the present invention are mainly reflected in:
Under micro-oxygen conditions, SNAD technique is combined with MBR system, the shearing force that lesser aeration quantity generates is to film dirt
Dye souring is weaker, by adjusting the pollution factor in mixed liquor, can reduce membrane fouling rate, effectively be controlled to fouling membrane
System.It has been observed that all adhering to a large amount of pollutants in film surfaces externally and internally under scanning electron microscope sem；To each section fouling membrane contribution rate
Analysis, film Rm itself is 4%, by pore plugging RPCaused fouling membrane accounts for 24%, as SMP it is main caused by gel layer pollute
RbAccount for 37%, as EPS it is main caused by cake layer pollute RcAccount for 35%.In pollution early period, transmembrane pressure TMP is first in rapid increase
Trend, it is then gentle, after polluting a period of time, and critical flux is rapidly increased to, completed a pollution period, totally 100 days.
The rate of fouling membrane is respectively 0.5kpa/d, 0.18kpa/d, 0.64kpa/d in early, middle, late stage.In addition, provided by the invention
Technological operation is simple, is conducive to significantly reduce operating cost, reduces energy consumption.
Detailed description of the invention
Fig. 1 is membrane module figure used in the present invention.
Fig. 2 is the forward and backward SEM scanning electron microscope (SEM) photograph of fouling membrane, wherein figure (a) is clean film wire surface, figure (b) is pollution caudacoria
Silk outer surface, figure (c) are film wire inner surface after pollution, and figure (d) is film surface pollutant.
Specific embodiment
To make those skilled in the art more fully understand technical solution of the present invention, below with reference to embodiment to the present invention
What is provided is described in detail in SNAD technique by the method for controlling mixed liquor characteristics decelerating membrane pollution.
SNAD technique is 7.5L/ (m in membrane flux in conjunction with MBR by this method2H) under the conditions of, in being mixed to sludge
The parameters such as SMP, EPS, viscosity, relative hydrophobicity are controlled, and achieve the purpose that decelerating membrane pollution rate, and the fouling membrane period is reachable
100 days；The film being contaminated can restore the 95% of former membrane flux after clear water is washed.
It mainly comprises the steps that
(1) industrial low ratio of carbon to ammonium waste water (C/N=1), using glucose as carbon source, inlet COD concentration test water inlet: are simulated
For 200mg/L, be subject to ammonium chloride, glucose, sodium bicarbonate, sodium dihydrogen phosphate, sodium chloride and using some microelements etc. as
Water inlet matrix；
(2) method of operation: dissolved oxygen maintains 0.3-0.6mg/L in reactor, and pH is in 7.8-8.1 range, temperature 35
DEG C, using the method for operation of high sludge concentration and underload, sludge concentration 15.0-16.5g/L, sludge age endless.Using
Interval film water-out manners, every water outlet 12min rest 3min.
(3) process is tested:
With the increase of reactor runing time, membrane pollution resistance is gradually increasing, and is remembered with protein and polysaccharide concentration summation
For the concentration of SMP or EPS, by the control to sludge concentration, the concentration of SMP is 4.5mg/L-7.0mg/L, and the concentration of EPS is
90mg/L-130mg/L。
PN/PS represents the ratio between protein and polysaccharide concentration, with the increase of reactor runing time, in mud mixed liquid
PN/PS increases in 1.3, EPS PN/PS by 0.1 and increases by 3 by 1.5 in SMP, PN/PS increase in either SMP or EPS, all
It will increase fouling membrane, therefore by PN/PS control in lower range.
With the increase of running time, PN/PS ratio increases in LB, mud mixed liquid relative hydrophobicity RH control exists
Within the scope of 35%-60%, Zeta potential is in -13.2mV~-18.2mV in mixed liquor.In SNAD, Anammox flora generation
Long for the period, sludge concentration variation is slower, and sewage sludge viscosity is 0.7-0.8mPa.s or so in mixed liquor, and viscosity change is smaller.
It has been observed that all adhering to a large amount of pollutants in film surfaces externally and internally under scanning electron microscope sem.The contribution of each section fouling membrane
Rate analysis, film R itselfmIt is 4%, by pore plugging RPCaused fouling membrane accounts for 24%, as SMP it is main caused by gel layer it is dirty
Contaminate RbAccount for 37%, as EPS it is main caused by cake layer pollute RcAccount for 35%.
In pollution early period, transmembrane pressure TMP is first in rapid increase trend, then gentle, after polluting a period of time, and it is fast
Speed rises to critical end point, completes a pollution period, totally 100 days.The rate of fouling membrane is respectively in early, middle, late stage
0.5kpa/d、0.18kpa/d、0.64kpa/d。
It is understood that the principle that embodiment of above is intended to be merely illustrative of the present and the exemplary implementation that uses
Mode, however the present invention is not limited thereto.For those skilled in the art, essence of the invention is not being departed from
In the case where mind and essence, various types and improvement can be made, these variations and modifications are also considered as protection scope of the present invention.
Claims (7)
1. a kind of pass through the method for control mixed liquor characteristics decelerating membrane pollution in SNAD technique, which is characterized in that by SNAD work
Skill realizes decelerating membrane pollution in conjunction with MBR, through SMP, EPS, viscosity, relative hydrophobicity parameter in control sludge mixing.
2. passing through the method for control mixed liquor characteristics decelerating membrane pollution, feature in SNAD technique according to claim 1
It is, membrane flux is 7.5L/ (m2H), the carbon source in using glucose as water inlet matrix, influent COD 200mg/L, reactor
Middle dissolved oxygen control is in 0.3-0.6mg/L, and pH value is in 7.8-8.1, and temperature is at 35 DEG C.
3. passing through the method for control mixed liquor characteristics decelerating membrane pollution, feature in SNAD technique according to claim 2
It is, sludge state there are two kinds of existing ways of wadding body and particle, and using the method for operation of high sludge concentration and underload, sludge is dense
Degree is 15.0-16.5g/L, and by membrane module effect, by sludge, all in the reactor, sludge age endless, membrane module is adopted for retention
With interval water-out manners, every water outlet 12min rests 3min.
4. passing through the method for control mixed liquor characteristics decelerating membrane pollution, feature in SNAD technique according to claim 3
It is, SMP concentration is in 4.5-7mg/L in mud mixed liquid, EPS concentration PN/ in SMP in 90-130mg/L, mud mixed liquid
PS range is 0.1-1.3, and PN/PS range is 1.5-3 in EPS.
5. passing through the method for control mixed liquor characteristics decelerating membrane pollution, feature in SNAD technique according to claim 4
It is, sewage sludge viscosity is 0.7-0.8mPa.s in mixed liquor.
6. passing through the method for control mixed liquor characteristics decelerating membrane pollution, feature in SNAD technique according to claim 5
It is, with the increase of membrane pollution resistance, PN/PS ratio increases in LB, and mud mixed liquid relative hydrophobicity RH is controlled in 35%-
60%.
7. passing through the method for control mixed liquor characteristics decelerating membrane pollution, feature in SNAD technique according to claim 6
It is, Zeta potential is in -13.2mV~-18.2mV in mixed liquor.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910396596.4A CN110054287A (en) | 2019-05-13 | 2019-05-13 | A method of passing through control mixed liquor characteristics decelerating membrane pollution in SNAD technique |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910396596.4A CN110054287A (en) | 2019-05-13 | 2019-05-13 | A method of passing through control mixed liquor characteristics decelerating membrane pollution in SNAD technique |
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| CN110054287A true CN110054287A (en) | 2019-07-26 |
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|---|---|---|---|
| CN201910396596.4A Pending CN110054287A (en) | 2019-05-13 | 2019-05-13 | A method of passing through control mixed liquor characteristics decelerating membrane pollution in SNAD technique |
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| CN (1) | CN110054287A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1600705A (en) * | 2004-09-30 | 2005-03-30 | 清华大学 | Method for adjusting and controlling character of mixed liquor in membrane bioreactor for controlling membrane pollution |
| CN1974439A (en) * | 2006-12-07 | 2007-06-06 | 江南大学 | Method of inhibiting membrane contamination of membrane bioreactor |
| CN101700931A (en) * | 2009-11-13 | 2010-05-05 | 江南大学 | Method for regulating and controlling sludge quality in membrane bioreactor |
| CN103058373A (en) * | 2013-01-04 | 2013-04-24 | 哈尔滨工业大学 | Method for slowing down membrane pollution to A/O-MBR (membrane biologic reactor) |
| CN109179654A (en) * | 2018-09-06 | 2019-01-11 | 北京化工大学 | It is a kind of to flow up SNAD technique quick start method in the aerobic membrane bioreactor that declines |
-
2019
- 2019-05-13 CN CN201910396596.4A patent/CN110054287A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1600705A (en) * | 2004-09-30 | 2005-03-30 | 清华大学 | Method for adjusting and controlling character of mixed liquor in membrane bioreactor for controlling membrane pollution |
| CN1974439A (en) * | 2006-12-07 | 2007-06-06 | 江南大学 | Method of inhibiting membrane contamination of membrane bioreactor |
| CN101700931A (en) * | 2009-11-13 | 2010-05-05 | 江南大学 | Method for regulating and controlling sludge quality in membrane bioreactor |
| CN103058373A (en) * | 2013-01-04 | 2013-04-24 | 哈尔滨工业大学 | Method for slowing down membrane pollution to A/O-MBR (membrane biologic reactor) |
| CN109179654A (en) * | 2018-09-06 | 2019-01-11 | 北京化工大学 | It is a kind of to flow up SNAD technique quick start method in the aerobic membrane bioreactor that declines |
Non-Patent Citations (1)
| Title |
|---|
| 张原洁: "微氧升流式膜生物反应器SNAD启动与机制研究", 《中国优秀硕士学位论文全文数据库 工程科技Ⅰ辑》 * |
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