GE P&W Mobile Water Treatment Systems - Standard Resin Regeneration Services - Manual

Fact Sheet
Find a contact near you by visiting www.ge.com/water and clicking on “Contact Us”.
* Trademark of General Electric Company; may be registered in one or more countries.
©2009, General Electric Company. All rights reserved.
FS1055EN.doc May-09
Standard Resin Regeneration Services
Description and Use
GE Water & Process Technologies provides custom
and emergency regeneration services for ion
exchange resins. Resin beds requiring emergency
regeneration can be sluiced directly into either the
six, 100 ft
3 (3 m 3 ) vessels on GE’s MobileFlow* trailer
or into one to four 85 ft 3 (2.4 m 3 ) vessels on Multi-
Flow* trailers for transport to the nearest GE Service
Center. The resin beads will then be transferred to
external regeneration vessels for regeneration
which includes air scrub, backwash, chemical intro-
duction, deionized water rinse and reloading into
the MobileFlow or MultiFlow units for transport back
to the job site. Turn around time at the GE Service
Center is often less than 24 hours, depending on
quantity and type of resins received.
As an option, should time permit, the resins can be
repackaged and dewatered in drums or cargo bags
for shipment back to the job site by common car-
rier. Resins can also be received from the job site in
drums or cargo bags delivered by common carrier.
The standard emergency regeneration service does
not include brine cleaning nor separation of cross-
fouled individual bed resins. These services are
available from GE, but plant turn around time will be
extended and pre-sampling is required to deter-
mine feasibility and cost effectiveness. The regen-
eration services provide the customer with a resin
analysis which includes tests for % moisture, total
and salt splitting capacity, and microscopic examination.
Equipment
GE’s Service Centers are equipped with individual
cation, anion, and mixed bed regenerators in the
size range of 100 to 300 ft
3 (3 to 9 m 3 ). In general,
minimum volumes for individual bed cation and
anion resins is 100 ft
3 (3 m 3 ), whereas 250 ft 3 (7 m 3 )
is the minimum mixed bed requirement.
GE’s 250 FT 3 mixed bed regenerators have a fixed
interface at a ratio of 1:2 cation to anion. For resins
having higher cation to anion ratios, the excess
cation is removed from the bottom of the mixed
bed regenerator and regenerated separately in
the cation regenerator.
Chemicals
Regeneration of cation resins will be with 8 lbs.
(4 kg) of hydrochloric acid per cubic foot applied at
4% to 6% strength at ambient temperature.
Regeneration of anion resin will be with 10 lbs.
(4.5 kg) of sodium hydroxide per cubic foot applied
at 3% to 5% strength at 120°F (49°C).
All dilution water will be either softened or deminer-
alized water. All final rinse water will be deionized
water analyzing less than 1 Mmho and less than
20 ppb silica.
The single bed resins will be rinsed to less than
50 Mmho conductivity
1 and the mixed bed to less
than 1 Mmho. 2
Regeneration Sequence and Timing
Backwash/Air Scrub
All resin will be thoroughly backwashed and air
scrubbed until the backwash effluent is relatively
free of suspended material indicating that this pro-
cedure has removed all of the surface foulants pos-
sible. Up to six individual air scrub and backwash
steps may be used during this step over a six hour
time period.
Regenerant Introduction
Minimum contact times will be 45 minutes for
cation resin and 90 minutes for anion resin. The