membrane technology in belarus
TRANSCRIPT
MEMBRANE TECHNOLOGY IN BELARUS
INSTITUTE OF PHYSICAL ORGANIC CHEMISTRY
A.V. Bildyukevich
NATIONAL ACADEMY OF SCIENCESOF BELARUS
SCIENTIFIC DIRECTIONS CHEMISTRY AND PHYSICAL CHEMISTRY OF
SPECIAL POLYMERS;
MEDICINES, ORGANIC SYNTHESIS;
SYNTHESYS, RESEARCH AND DEVELOPMENTS OF NEW MATERIALS (MEMBRAINS, FIBROUS ION EXCHANGERS, CATALYSTS, AUXILIARY MATERIALS);
MATERIALS AND METHODS FOR ENVIROMENTAL PROTECTION AND HUMANIC HEALTH
POLYMERIC MEMBRANES AND TECHNOLOGIES
THE FOLLOWING MATERIALS ARE DEVELOPED :
REINFORCED MICROFILTRATION MEMBRANES BASED ON NYLON-6 ;
FLAT ULTRAFILTRATION MEMBRANES BASED ON POLYACRILONITRILE, POLYSULFONE, AROMATIC POLYAMIDES;
HYDROFOBIC MICROFILTRATION MEMBRANES BASED ON FLUORITED POLYMERS;
THE TECHNOLOGIES OF SPIRAL WOUND, HOLLOW FIBERS, CASSETE MEMBRANE ELEMENTS PRODUCTION;
INDUSTRIAL MEMBRANE PLANTS OF DIFFERRENT CAPACITY.
PILOT PLANT FOR FLAT MEMBRANE MANUFACTORING
INDUSTRIAL UF PLANT FOR CHEESE WHEY TREATMENT BASED ON PLAT-FND FRAME
MEMBRANE MODULES
CASETTE TYPE UF PLANTS ON GRODNO MEDICINE PLANT
UF PLANTS BASED ON HOLLOW FIBER MEMBRANE MODULES
INSTALLATIONS FOR CLARIFICATIONOF FOOD VINEGAR
PILOT PLANT FORWHEY ULTRAFITRATION
Ultrafitration of the pectin solutions
TECHNOLOGY OF MANUFACTURE OF THE HOLLOW FIBRE MEMBRANES BASED ON AROMATIC POLYSULFONE
CRITICAL SOLUTION TEMPERATURES IN POLYSULPHONE - POLYETHYLENEGLYCOL (PEG)
- DMAC TERNARY POLYMERIC SYSTEM
The miscibility gap is limited both from the top and bottom on the temperature scale and narrows down with an increase in concentration of PSf and PEG
The cloud-points curves show that
UCST is located on the temperature scale below the LCST
The LCST is located in the region of experimentally accessible temperatures
LCST in the PSf- PEG - DMAC TERNARY POLYMERIC SYSTEM
LIGHT TRANSMISSION OF THE 24% CASTING SOLUTIONS VS. TEMPERATURE
CONCENTRATION OF PEG: 21 (1), 27 (2), 30% (3).
FOR PSf CASTING SOLUTIONS THE LCST IS LOCATED IN THE REGION OF EXPERIMENTALLY ACCESSIBLE TEMPERATURES
SEM IMAGES OF PSf CAPILLARY MEMBRANES PREPARED AT DIFFERENT TEMPERATURE OF BORE LIQUID
200C 400C
600C 800C
SEM IMAGES OF MEMBRANE INNER SURFACE
EFFECT OF TEMPERATURE OF BORE LIQUID ON THE PERFORMANCE OF PSf CAPILLARY MEMBRANES
slot-like porescircularity pores
ONE-SECTION UNIT FOR PRODUCTION THE HOLLOW FIBER MEMBRANES
unit for casting solution preparation and filtration oil less compressor hollow fiber membranes spinning unit bore liquid purification unit scrolling device drying section hollow fiber membranes test set.
INCLUDES:
A NEW TYPE OF POLYSULFON CAPILLARY MEMBRANES HIGH PERMABILITY NARROW PORE SIZE DISTRIBUTION EXTREMELY HIGH MECHANICAL STRENGTH
SKIN-LAYER OUTER SURFACE
INNER SURFACE
MEMBRANE FOR LOW PRESSURE DEAD-END UF
Membrane PS-100МWater flux, l/m2h* 600-870MWCO 100Bubble-point, bar >10Fiber burst pressure, bar >10Fiber diameter, mmInnerOuter
0.91.45
AFM– IMAGES OF THE INNER SURFACE STRUCTURE OF PSF HOLLOW FIBER MEMBRANES
AFM– IMAGES OF THE INNER SURFACE STRUCTURE OF PSF HOLLOW FIBER MEMBRANES
PS- 100PS- 20
PS- 300PS-50
SEM– IMAGES OF THE INNER SURFACE STRUCTURE OF PSF HOLLOW FIBER MEMBRANES WITH DIFFERENT CUT- OFF
MEMBRANE MODIFICATION:
MEMBRANE HYDROFILIZATION
POLYMER-INORGANIC ULTRAFILTRATION MEMBRANES
MEMBRANES WITH BIOCIDE PROPERTIES
MEMBRANE REJECTION VS. POLYMER CONCENTRATION IN BORE LIQUID
0 1 2 3 4 5
20
30
40
50
60
70
80
90
2
1
c,%
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ÿ, %
PVP
PVA
MEMBRANE MODIFICATION
ADVANTAGES OF THE METHOD:
- MEMBRANE HYDROFILIZATION- DRAMASTIC CHANGES IN MEMBRAME REJECTION
5%1% 0%
SEM– IMAGES OF THE PSF HOLLOW FIBER MEMBRANES PREPARED USIND DIFFERENT BORE LIQUIDS (PVP)
POLYMER-INORGANIC CAPILLARY ULTRAFILTRATION MEMBRANES PREPARATION
STARTED MEMBRANE
MEMBRANE MODIFIED BY Sn(ОН)Cl
FORMATION NANOPARTICLES IN MEMBRANE MATRIX IN SITUSnCl2 + HOH ↔ Sn(OH)Cl + HCl
MEMBRANE MODIFICATION LEADS TO INCREASING THE POROSITY AND IMPROVED THE PORE SIZE DISTRIBUTION
PORE SIZE DISTRIBUTION OF MEMBRANE MODIFIED BY COLLOID SILICA
UNMODIFIED MEMBRANE
POLYMER-INORGANIC MEMBRANE(2% SiO2)
MCIDTM Analysis 7.0 Software Evaluation (InterFocus Imaging Ltd, UK)
MEMBRANES WITH BIOCIDE PROPERTIES
Ag
1,5 - REFERENCE TEMPLATES
2,3 - АС-300, Ag*6,7 - POLYHEXAMETHYLENEGUANIDYNE BENZOATE
THE MOBILE PILOT PLANT FOR DEAD-END ULTRAFILTRATION
INCLUDES: Hollow fiber membrane modules Dosing system for chemical reagents (coagulants, flocculants, oxidizing agents etc.) Unit for automatic back-flash and air scrubbing regeneration of hollow fiber membrane modules Prefilter Controller (flux, pressure, temperature) Software “Chemistry” Hydro jet JP-5 Oil less compressor
The mobile pilot plant is assigned for purification of different waters: ground, surface and tap waters, as well as for research and development of different water purification processes. The main process of water purification is low-pressure dead-end ultrafiltration.
THE MOBILE PILOT PLANT FOR DEAD-END ULTRAFILTRATION
INCLUDES: Hollow fiber membrane modules Dosing system for chemical reagents (coagulants, flocculants, oxidizing agents etc.) Unit for automatic back-flash and air scrubbing regeneration of hollow fiber membrane modules Prefilter Controller (flux, pressure, temperature) Software “Chemistry” Hydro jet JP-5 Oil less compressor
The mobile pilot plant is assigned for purification of different waters: ground, surface and tap waters, as well as for research and development of different water purification processes.
THE MAIN PROCESS OF WATER PURIFICATION IS LOW-PRESSURE DEAD-END ULTRAFILTRATION
FILTRATION FOULING BACKFLUSH
ANALYSES OF RAW AND TREATED WATER OF SOLIGORSK LAKE (BELARUS)
PARAMETERS RAW WATER
TREATED WATER
COLOR 79 21
TURBIDITY, ppm 4,54 0
CONCENTRATION OF Fe, ppm 4,30 0,42
CODMN, mg О/l 12,6 8.0
Coagulant – “Praestol”, 2 mg/l
ANALYSES OF RAW AND TREATED WATER OF THE COOLING POND (SOLIGORSK, BELARUS)
PARAMETERS RAW WATER
TREATED WATER
COLOR 534 23TURBIDITY, ppm 25,4 0,59CONCENTRATION OF Fe, ppb
1,05 0,20
CODMN, mg О/l 12,2 5,3
Coagulant – “Praestol”, 1 mg/l
ANALYSES OF RAW AND TREATED WATER OF THE OSIPOVICHI POWER PLANT
PARAMETERS RAW WATER
TREATED WATER
PH 7,20–7,75 6,77–7,54COLOR 54-139 19-78TURBIDITY, ppm 0,43–1,09 0CONCENTRATION OF Fe, ppb 129–186 20–39CODMN, mg О/l 8,8–13,0 6,5–9,1
ANALYSES OF RAW AND TREATED WATER OF THE VILEIKA POWER PLANT
PARAMETERS RAW WATER
TREATED WATER
PH 7,28–7,80 7,55–7,80
COLOR 37-94 8-10
TURBIDITY, ppm 0,58–2,09 0
CONCENTRATION OF Fe, ppb 149–810 12–20
CODMN, mg О/l 1,56–1,92 1,56–1,94
PURIFICATION OF THE TECHNOLOGICAL STEAM CONDENSATE OF MINSK POWER PLANT (MPP-5)
PARAMETERS INITIALCONDENSATE
TREATEDCONDENSATE
PH 6,5-8,2 6,5-8,1
COLOR 7-150 0-9
TURBIDITY, ppm 0,31-3,02 0
CONCENTRATION OF Fe, ppb
48-1150 2-8
CONCENTRATION OF Cu, ppb
28-42 7-10
PURIFICATION OF THE TECHNOLOGICAL STEAM CONDENSATE ON MINSK POWER PLANT (MPP-2)
PARAMETERS INITIALCONDENSATE
TREATEDCONDENSATE
pH 6,56-6,72 6,48-6,63
COLOR 64-112 0-4
TURBIDITY, ppm 3,64-4,12 0
CONCENTRATION OF Fe, ppb
1188-23040 7,5-48
ULTRAFILTRATION PILOT PLANTS FOR WATER TREATMENT ENGINEERING BASED ON CAPILLARY MEMBRANES
MEMBRANE MODULES FOR LOW PRESSURE DEAD-END ULTRAFILTRATION
Membrane type capillaryFiltration type inside-to-outsidePolymer polysulfoneCut-off 100 000 DInner diameter 0,9 mmOuter diameter 1,35 mmThe range of pH 1-13Max temperature 600CMembrane area 20 m2
Permeability 1,2-2,5 m3/h
OPERATING CONDITIONS:
Transmembrane pressure 2,1 BarBackflush pressure 3,0 Bar Backflush frequency ones in 15-60 minutes Backflush time 15-20 сAir scrubbing 1-2 times per dayChemical cleaning 4-12 times per year
MEMBRANE PLANT FOR WATER PURIFICATIONON THE OSIPOVICHI POWER PLANT
MEMBRANE PLANT FOR WATER
PURIFICATIONON THE
OSIPOVICHI POWER PLANT
THANK YOU FOR YOUR ATTENTION