GE E4H-CE Series - Manual (Page 6)

1.0 DESCRIPTION
E-CE Series Reverse Osmosis (RO) machines are durable pieces of equipment, which, with prop-
er care, will last for many years. These instructions give operation and maintenance details vital
to the sustained performance of the machine. Please read completely before operating your
machine.
1.1 Definitions
The operating definitions provided below will help you further understand your machine
and this manual.
1.1.1 Permeate Rate (Product Water Rate) [Qp]
The Permeate Rate is the flow rate of purified water that passed through the mem-
brane element and out of the membrane element in liter/min (Lpm), cubic
meters/hour (m
3
/h), gallons/min (gpm) or gallons/hour (gph). Specified perme-
ate rates are based on a feed water temperature of 25°C (77°F). Permeate rate will
vary with temperature.
1.1.2 Concentrate Rate (Wastewater Rate) [Qc]
The Concentrate Rate is the flow of incoming water in Lpm or m 3 /h (gpm or gph).
1.1.3 Feed Rate [Qf]
The Feed Rate is the flow rate of incoming water in Lpm or m 3 /h (gpm or gph).
Feed water rate equals permeate plus concentrate rate.
1.1.4 Reverse Osmosis
Reverse Osmosis (RO) is the separation of one component in a solution from
another component of a solution from another component by means of pressures
exerted on a semi-permeable membrane element. The feed solution is separated
into two streams, permeate and concentrate, and collected from both sides of the
membrane element.
Figure 1.1
Normal Versus Cross Flow Filtration
1