Download - G.V. Medyak, V.I. Sokolova, A.A. Shunkevich, A.V. Bildyukevich*, V.P. Sokol, A.P. Polikarpov
MATERIAL AND EQUIPMENT FOR WATER PURIFICATION FROM LEAD
G.V. Medyak, V.I. Sokolova, A.A. Shunkevich, A.V. Bildyukevich*, V.P. Sokol, A.P. Polikarpov
NATIONAL ACADEMY OF SCIENCESOF BELARUS
INSTITUTE OF PHYSICAL ORGANIC CHEMISTRY
The pollution of water resources by lead compounds is a serious ecological problem, especially in industrially developed regions.
Commonly, the level of total lead content in atmospheric precipitations usually ranges from 1 to 50 μg/l, but in areas with intensive industry can reach up to 1 000 μg /l.
Increasing of lead concentration in underground water is causing serious problems concerning drinking water supply in some locations in Middle Asia.
Exceeding of the MPC of lead in drinking water (10 μg/l ) in Canada, Europe and some regions of Russian Federation is fixed
PROBLEM:
ADVANTAGES:
Comparison of the ordinary granular and fibrous ion
exchangers
high speed of ion exchange, sorption and catalytic processes
possibility to use thin (2-6 cm) filtering layers high flow rate high chemical resistance and osmotic stability possibility of multiple regenerations
CHEMICALY ACTIVE TEXTILE MATERIALS
APPLICATIONS: AIR PURIFICATION FROM TOXIC IMPURITIES IN INDUSTRY AND
AGRICULTURE SUPERFINE AIR PURIFICATION IN ELECTRONICS INDIVIDUAL PROTECTIVE MEANS FOR HUMANS SKIN AND LUNGS WATER PURIFICATION FROM HEAVY METALS, NITRATES, ARSENIC,
ACIDS DRINKING WATER PRODUCTION
THE AIM OF THE RESEARCH IS TO OFFER THE TECHNOLOGY AND INSTALLATIONS FOR FINE PURIFICATION OF DRINKING WATER FROM LEAD
THE NEW APPROACH FOR FINE PURIFICATION OF DRINKING WATER FROM LEAD IS OFFERED. IT CONSISTS IN APPLICATION OF FIBROUS CATION EXCHANGER FIBAN X-1
Cartridges made from FIBAN X-1 yarn
CHARACTERISTICS OF THE ION EXCHANGERS USED IN THIS WORK
Label of the ion exchanger
Functional groups
Capacity, m.eqv/g
СООН NR2
FIBAN Х-1fibrous
N(CH2COOH)2
СООН6,5 0,6
ANKB-35granular
N(CH2COOH)2 4,6 0,5
Breakthrough curves for FIBAN X-1(A) and ANKB-35 (B) ion exchangers. 1 - Co2+, 2 - Ni2+, 3 - Zn2+, 4 - Cd2+, 5 - Cu2+, 6 - Pb2+
0
0,2
0,4
0,6
0,8
1
1,2
1,4
0 2 4 6 8 10 12
1
4
23
5
6
0
0,2
0,4
0,6
0,8
1
1,2
1,4
0 2 4 6 8 10 12
2
3
1
5
4
6
C/C0C/C0
BV10-3 BV10-3
Model solution: 410-5 eq/l of Cu2+, Ni2+, Co2+, Zn2+, Cd2+, Pb2+ on the background of 4 10-3 eq/l of Ca2+.
Filtration rate is 9.5 cm/min (190 BV/h); pH = 6;
A B
Ionexchanger
Dynamic capacity up to breakthrough, meqv/g
Cu2+ Pb2+ Co2+ Ni2+ Cd2+ Zn2+
FIBAN X-1 0,77 1,05 0,19 0,28 0,23 0,17
ANKB-35 0 0 0 0 0 0
Full dynamic capacities, meqv/g
FIBAN X-1 1,59 1,79 0,02 0,23 0,30 0,06
ANKB-35 0,77 0,63 0,23 0,35 0,22 0,27
DYNAMIC CAPACITIES UP TO BREAKTHROUGH (CME = 0.05 MG/L) AND FULL DYNAMIC CAPACITIES OF ION EXCHANGERS ACCORDING TO HEAVY METAL IONS
PURIFICATION OF WATER FROM LEAD USING 10 CARTRIDGE MADE FROM FIBAN X-1 YARN
Parameter Unit ValueTemperature 0C 12-14pH pH 8.0Alcalinity meqv/l 3.7Calcium mg/l 59Magnesium mg/l 15COD mg O/l 0.5Iron mg/l 0.11Zink μg/l 12Alumina μg/l 9Silica mg/l 4Lead μg/l 19-60
COMPOSITION OF FEED WATER
RESULTS OF WATER PURIFICATION
AT DIFFERENT FLOW RATES
Flow rate,
l/h
Рb, μg/lDegree of
purification,%
Feed water Filtrate
400 27,4 1,7 93,8
800 26,0-28,0 2,6 - 3,7 85,8- 90,7
1200 20.1-25.1 2.7 – 3.5 86,1- 86.61600 19,6 2,5 87,2
BREAKTHROUGH CURVE OF LEAD IONS AT FLOW RATE 1000 ± 50 ltr/h
0
2
4
6
8
10
12
14
16
0 5 10 15 20 25 30 35 40
CPb, μg/l
V, m3
PURIFICATION OF WATER FROM LEAD USING 10 CARTRIDGE MADE FROM FIBAN X-1 YARN
Concentration of Pb in feed - 60 μg/l
Based on the results of this study one- and multicartridge filters for water purification from lead were designed. Filters include either disposable ones for domestic application or industrial installations with automatic regeneration with productivity up to 200 m3/h.
Parameter Value
Typical Filtrate Flux Range 18-20 m3/h
Maximum operating pressure 8 bar
Temperature range +5…- +400С
Fit connection input/output thread 2”/2” or flange
Weight (without water, approximately) 20 kg
Cartridge standard 20” DOE
Number of FIBAN X-1cartridges 10
Resource before regeneration* 1200 m3
Regenerating solutionsbasic/secondary
5% HNO3 / 0.2% NaОН
Consumption of regenerating solutions for regeneration
200 l
Duration of regeneration 2 hours
Length diameter 700 300 mm
INDUSTRIAL CARTRIDGE FILTER
WATER PURIFICATION PLANT WITH PRODUCTIVITY 40 m3/h
OTHER APPLICATIONS OF FIBAN X-1 drinking and domestic water purification from heavy metal ions removing heavy metal ions: Fe(II), Cu(II), Ni(II), Co(II), Cd(II),
Zn(II), Hg(II) - from the technological solutions effective sorption of radionuclide Sr-90 concentrating of the heavy and transition metals from diluted
solutions for analysis air purification from the vapor and aerosol impurities of the
basic nature (ammonia, organic amines, hydrazine, oxides and metal hydroxides)
protection means of the respiratory organs organic catalysis (by complex metal ions)
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