NEW MATERIALS FOR WATER PURIFICATION FROM NATURAL ORGANIC MATTERS NATIONAL ACADEMY OF SCIENCES OF BELARUS INSTITUTE OF PHYSICAL ORGANIC CHEMISTRY G.V. Medyak, V.I. Sokolova, A.A. Shunkevich, A.V. Bildyukevich*

 COMPARATIVE STUDY OF GRANULAR ORGANIC SCAVENGERS AND FIBAN FIBROUS ION EXCHANGERS IN SURFACE WATER PURIFICATION FROM NATURAL ORGANIC MATTERS (NOM)  DEVELOPMENT OF NEW PLANT DESIGN ACCORDING TO PROPERTIES OF NEW MATERIALS THE AIMS OF THЕ RESEARCH ARE:

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 FIBAN  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 WARER PRODUCTION.

TEXTILE FORMS OF FIBROUS ION EXCHANGERS Staple Nonwoven materials Yarn and cartridges

Type of anion exchanger Matrix Basic functional groups Capacity, meqv/g Swelling, g H 2 O/g FIBAN А-5 gel PAN  N(CH 3 ) FIBAN А-6 gel PAN  (C 3 H 5 О)(CH 3 ) 2 N + Cl -,  N(CH 3 ) FIBAN А-7 gel PAN  (C 2 H 4 OH)(CH 3 ) 2 N + Cl -,  N(CH 3 ) Purolite A-200 macroporous PS-DVB  (CH 3 ) 3 N + Cl Purolite A-501 gel PA-DVB  N(CH 3 ) 3 + Cl Purolite A-860S macroporous PA-DVB  N(CH 3 ) 3 + Cl Amberlite IRA-900 macroporous PS-DVB  N(CH 3 ) 3 + Cl MAIN CHARACTERISTICS OF ION EXCHANGERS PS – polystyrene, DVB – divinylbenzene, PA – polyacrylic matrix, PAN – polyacrylonitrile

 Water purification from NOM (humic and fulvic acids) was carried out using ion exchangers FIBAN and strong-base anion exchangers Purolite and Amberlite, recommended for water purification from organic matters  All tests were carried out in dynamic conditions: a column inner diameter 1.2 cm, a bed height 4-5 cm,  1.2 g of dried to constant mass granular or finely cut fibrous ion exchangers  All ion exchangers were transformed into Cl-form  The maximum COD value in the purified water was considered to be 3 mg О/l. EXPERIMENTAL

WATER SOURCE* RIVER Color, grade COD, mg О/l Content of Fe, ppb The Polota The Western Dvina The Svisloch * AFTER PRETREATMENT BY ULTRAFILTRATION The Polota The Western Dvina The Svisloch BELARUS

BREAKTHROUGH CURVES OF NOM FOR FIBROUS AND GRANULAR ION EXCHANGERS IN PROCESS OF WATER PURIFICATION B The Western Dvina river flow rate BV/hour The Svisloch river flow rate BV/hour The Svisloch river flow rate BV/hour Granular ion exchanger Purolite A-860S can be comparative to fibrous ion exchangers FIBAN under the flow rate 80 BV/h, but when the flow rate is increased in 2.5 and 5 times, the breakthrough of organic matters already occurs in the first portion of effluent 1 – FIBAN А-5, 2 – Purolite A-860S, 3 – FIBAN A-6, 4 – FIBAN A-7

Type of anion exchanger COD of the initial water, mg О/l Flow rate, BV/hour Dynamic capacity, mg О /g Volume of purified water, BV FIBAN А-715, FIBAN А-511, FIBAN А-611, Purolite A-20011,9 00 Amberlite IRA-90011,9 00 Purolite A-50111, Purolite A-860S15, FIBAN А-54, Purolite A-860S4, FIBAN А-54, Purolite A-860S4,0 00 RESULTS OF PURIFICATION OF WATER FROM THE POLOTA AND THE SVISLOCH RIVERS FROM NOM BY FIBROUS AND GRANULAR ANION EXCHANGERS

BREAKTHROUGH CURVES (A) AND SORPTION HISTOGRAMS (B) OF NOM ONTO FIBROUS ION EXCHANGER FIBAN A-5W IN CYCLES ВVВV Color, degreeАB cycle

 High speed of sorption and desorption of NOM  Deep water purification from NOM (up to COD 2-3 mg О/l) at very high flow rates  Thin layers of ion exchange materials  Large filtration area in one apparatus  New constructional ideas using different textile forms of ion exchangers: staple, nonwoven materials, yarn, etc. THE MAIN ADVANTAGES OF FIBROUS ION EXCHANGERS FIBAN FOR WATER TREATMENT: THESE ADVANTAGES OF FIBROUS FIBAN ION EXCHANGERS MAKE THEM PROMISING FOR WATER PURIFICATION FROM NOM IN DIFFERENT BRANCHES OF INDUSTRY

APPLICATION OF FIBAN ION EXCHANGERS IN VARIOUS TEXTILE FORMS: STAPLE, NONWOVEN MATERIALS AND YARN Filter cartridge made from FIBAN A-5W staple Cartridges made from FIBAN A-1 yarn and nonwoven materials

Cartridge type Flow rate, l/h COD of feed water, gО/l Degree of purification onto COD, % Volume of purified water*,l 10”Cartridges made from FIBAN A-5W yarn , ”Cartridges made from nonwoven FIBAN A-5W and yarn (10:16) 21016, , ”Cartridges made from nonwoven FIBAN A-5W 13510, RESULTS OF THE POLOTA RIVER WATER PURIFICATION * up to COD = 3 mgО/l

DESIGN OF THE INDUSTRIAL ION EXCHANGE MODULE FIBAN A-5 NONWOVEN MATERIAL SPACER STRIKER PEFORATED INNER TUBE FILTER SHELL CLAMP Shell head

RESULTS OF PURIFICATION OF THE INPUT WATER AT POLOTSK HPP BY HYBRID PROCESS: ULTRAFILTRATION / ION EXCHANGE THE HYBRID PROCESS OF INPUT WATER PURIFICATION WAS SUGGESTED AND TESTED AT POLOTSK HPP. THE PROCESS INCLUDES DEAD-END ULTRAFILTRATION AND SORPTION BY STRONG-BASE FIBROUS ION EXCHANGER CHARACTERISTICSINPUT WATERWATER AFTER ULTRAFILTRATION WATER AFTER UF AND ANION EXCHANGE TREATMENT pH7,86-7,89 7,79-7,84 CONCENTRATION OF IRON, ppb COLOR, degree TURBIDITY, mg/l3,2-4,350,51-0,580 COD, mgО/l23,7919,421,8-2,0

WATER PURIFICATION PILOT PLANT DRAFT PROJECT OF THE INDUSTRIAL INSTALLATION BASED ON THE CREATED ELEMENT BASE

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