Shallow Shell^™
SSTA63

polistirenic Gel, Rășină Anionică puternic bazica de tip II, forma clor, Technologia Shallow Shell^™

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Overview

Principalele Aplicatii

demineralizare
Îndepărtarea silicei

Avantaje

SST shorter diffusion path benefits:
Cea mai mare eficiență de regenerare
Very low leakage
Volumuri scăzute de clătire
Lower operating costs
stabilitate fizică și chimică excelentă

Sisteme

sisteme de regenerare in co-curent
sisteme de regenerare in contracurent

Aprobari de reglementare

Certificat de WQA conform standardului NSF ANSI 61

Ambalaje tipice

sac 1 ft³
25 L sac
Butoi (Fibră) de 5 CF
1 M³ supersac
supersac de 42 CF

* SST^® este marca inregistrata a Purolite Co.

Caracteristici tipice fizice si chimice

Structura polimerica	Copolimer gel polistirenic reticulat cu divinilbenzen
Aspect	Perle sferice
Grupari functionale	Grupari quaternare de amoniu de tip II
Forma ionica	forma Cl^-
capacitate masica uscată (min.)	2.6 eq/kg uscat ( forma Cl^- )
reținerea umidității	37 - 45 % ( forma Cl^- )
Distribuția granulometrică	300 - 1200 µm
< 300 µm (max.)	1 %
coeficient de uniformitate (max.)	1.7
Dilatare reversibilă, Cl- → OH- (max.)	15 %
densitate specifică	1.12
Greutate de transport (aprox.)	680 - 720 g/L (42.5 - 45.0 lb/ft³)
Limita de temperatură	35 °C (95.0 °F)

Caracteristici hidraulice

Pressure Drop

The pressure drop across a bed of ion exchange resin depends on the particle size distribution, bed depth, and voids volume of the exchange material, as well as on the flow rate and viscosity of the influent solution. Factors affecting any of these parameters— such as the presence of particulate matter filtered out by the bed, abnormal compressibility of the resin, or the incomplete classification of the bed—will have an adverse effect, and result in an increased head loss. Depending on the quality of the influent water, the application and the design of the plant, service flow rates may vary from 10 to 40 BV/h.

Pressure Drop Across Resin Bed

Backwash

During up-flow backwash, the resin bed should be expanded in volume between 50 and 70% for at least 10 to 15 minutes. This operation will free particulate matter, clear the bed of bubbles and voids, and reclassify the resin particles ensuring minimum resistance to flow. When first putting into service, approximately 30 minutes of expansion is usually sufficient to properly classify the bed. It is important to note that bed expansion increases with flow rate and decreases with influent fluid temperature. Caution must be taken to avoid loss of resin through the top of the vessel by over expansion of the bed.

Backwash Expansion of Resin Bed

Shallow Shell™ SSTA63