Crane EPRO-150 - Introduction

Introduction
Reverse osmosis systems from
Crane Environmental produce high
quality water from municipal and well
water. The highest quality
components and the latest
technology is used in the production
and design of our reverse osmosis
systems.
What is reverse osmosis?
While ordinary filters use a screen to
separate particles from water
streams, a reverse osmosis system
uses a semi-permeable membrane
to separate a high percentage of
dissolved molecules. Only certain
types of molecules, like water, can
pass through the membrane. Other
molecules, like salts, do not pass
through the membrane and are left
behind.
What is a semi-permeable
membrane?
A semi-permeable membrane is very
similar to your skin. The membrane
is made of thin, multi-layered sheets
with microscopic pores that let water
pass through while acting as a
barrier to stop dissolved particles
like salt.
THE REVERSE OSMOSIS MEMBRANE ELEMENT
CONCENTRATE WATER containing salts is
rejected by the membrane and does not enter
the product tube. The concentrate water exits
the side of the element opposite of the feed.
Product tube
RAW WATER FEED enters into membrane
layers. Applied pressure forces raw water
across membrane layers into the
product tube.
PRODUCT WATER collects in the product tube and
can be output from either end of the membrane element.
EPRO 150-8000 O&M MANUAL Rev.04/03 Page 2 of 55