lowest tco - X-Flow


lowest tco - X-Flow


aQUafleX 55

wAter solutions product brochure

highest reliability

lowest tco

generAl inForMAtion ultrAFiltrAtion AdvAntAges

Aquaflex 55 ultrafiltration (UF) membranes

are an excellent filtration technology for the

treatment of surface and ground water to

potable or process water standards and for

effective effluent polishing. The hollow fiber

membranes on the inside provide superior

separation performance and effectively

reject bacteria and viruses. Each module

with a membrane surface area of 55 m² is

installed vertically and connected directly to

feed and filtrate headers.

Pentair X-Flow’s ultrafiltration membranes

know an inside-out flow configuration with

two modes of operation: dead end flow

or recirculation flow. Recirculation flow

is applied to increase the turbulence on

the membrane surface. Both modes of

operation are discontinuous with alternating

filtration (production) and backwash

(cleaning) steps. In the filtration step feed

water is forced through the fibers, and in the

backwash step some of the filtrate is forced

back through the membranes to remove any

solids. The inside-out configuration offers a

high performance (flux/tmp) at a low energy

and chemical consumption.

selection oF reFerences

Potable water, Russia

Please ask your contact for a detailed reference list.

Compared with traditional sand filtration,

ultrafiltration membranes offer the

following advantages:

• Delivers a high filtrate quality

• Yields substantial savings in space, cost

and energy

• Suited to build scalable systems

• Easy to integrate with other processes

• Provides a reliable single barrier for

bacteria and viruses

• Protects public health, operators & the



• Dead End Filtration

- Simple layout

- Low energy consumption

• Chemically Enhanced Backwash

- Low operating pressure

- Fully automated, no operator


- Uses low cost chemicals

• Fully automatic operation

- Logging of operating parameters

- Minimal maintenance expenses

- Integrity testing

• Pressurized System

- Fully enclosed

- No operator exposure to fumes or


- Small footprint

• Direct coagulation with inorganic


- Short retention times

- High removal of organics

- Phosphate removal

Potable water, USA Effluent polishing, Thailand


Membrane area [m²/ft²] 55 [590]

Membrane Diameter


AquAFleX skids

0.8 [31]

Recovery 90-98%

Bacteria Retention 99.9999%

Virus Retention 99.99%

Silt Density Index < 3

Turbidity < 0.1 ntu

Although great alone, the best performance

is achieved when the Aquaflex 55 module is

used with the Aquaflex skid design. With

its excellent modular characteristics, the

Aquaflex skid offers a nominal capacity of

up to 800 m³/h by featuring up to 6,600 m² of

membrane surface.

The skid layout offers an optimum

physical footprint and provides convenient

accessibility to all modules for fast

construction and maintenance.

Feed Permeate

PotAble wAter Process wAter

Worldwide, governments, municipalities

and industries face the challenge of safeguarding

current and future drinking water

requirements. Not only the allowable levels

for turbidity and microbiology are being

lowered for potable water, but also new

limits are being established for viruses

and chlorine resistant organisms, such as

Cryptosporidium and Giardia.

With Aquaflex 55, Pentair X-Flow offers

a solution to produce potable water that

meets the highest standards for turbidity

and microbiology.

X-Flow Module overview











XIGA 55 o o o o

AqUAFLEX 55 o o o o





(Airlift MBR)

o o

CoMPACT 27 o


(Crossflow MBR)




Because of rising costs and growing supply

challenges, more and more industrial and

agricultural customers are using surface

water instead of potable water.

Pentair X-Flow’s hollow fiber ultrafiltration

(UF) membranes produce process water

that can either be used directly, if salinity

and dissolved substances are within limits,

or be fed to a reverse osmosis system, to

remove salinity and dissolved substances.

eFFluent Polishing




R-100 o

Polished effluent from wastewater

treatment plants can be re-used for low

grade non-potable applications. For this,

Aquaflex 55 offers a reliable solution as the

hollow fiber ultrafiltration membrane meets

the highest standards for turbidity and


The membranes can either be installed

as a single treatment step, if salinity and

dissolved substances are within limits, or

as pre-treatment for a reverse osmosis

system , to remove salinity and dissolved





Pioneers in

membrane filtration

About PentAir X-Flow

Pentair X-Flow has broad know-how and

a proud history in the development and

application of innovative membrane filtration

technologies. The company develops

and supplies membrane technology to

global municipal and industrial markets.

The product portfolio contains numerous

standard membranes, modules and units

for filtration and purification processes.

Full circle MeMbrAne technology PArtner

The success of any project, no matter how

big or small, starts with the selection of the

right membrane product, continues during

the design and commissioning phase and is

finally guaranteed by the right maintenance

and timely service.

Throughout the years, Pentair X-Flow

has especially gained expertise and

experience in water purification, ranging

from producing potable water to treating

wastewater and the pre-treatment of

seawater, but also in the food, beverage

and pharmaceutical industries.

With research, production, engineering,

automation, project management and

service in-house, Pentair X-Flow focuses

on the development of durable and reliable

products that can be tailored to the specific

needs of our customers.

Worldwide, Pentair X-Flow has an extensive

network of professional sales offices, service

centers, agents and distributors that work

together to make Pentair X-Flow the partner

of choice for world-class water purification


As all of these aspects are equally

important to us, Pentair X-Flow is able to

support its customers from A-Z and achieve

unique results together. The benefits of

this full circle partnering approach are

demonstrated by the many worldwide

projects where Pentair X-Flow’s innovative

membrane products are applied.


po. box 739, 7500 as enschede, netherlands WWW.x-floW.coM

all pentair trademarks and logos are owned by pentair, Inc. all other brand or product names are trademarks or registered marks of their respective owners.

because we are continuously improving our products and services, pentair reserves the right to change specifications without prior notice.

pentair is an equal opportunity employer.

aquaflex e-7/12 © 2012 pentair, Inc. all rights reserved.

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