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Flux (See p.12 2-1-2 "Configuring Flux Settings")
Flux is the speed at which water permeates the membrane. It is calculated by dividing the filtration flow
per unit time by the membrane surface area.
It is also referred to as linear velocity (LV).
Standard flux for the product is 0.2 to 1.0 m
the properties of the raw water used.
In some cases the flux expressed in liters of membrane surface area, per hour, [l/(m
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Chemical Cleaning (See p.17 "3-1 Chemical Cleaning")
Chemical cleaning is a type of cleaning that uses chemicals to restore membrane filtration performance
that has become inhibited due to fouling, and to maintain hygienic conditions inside the filtration device.
Chemical cleaning is performed either by washing the permeate side (inner side of the membrane) with
a chemical solution in place (cleaning in place, CIP), or by soaking the module or element directly in a
chemical solution (chemical soak cleaning).
There are two types of cleaning in place: maintenance cleaning that is performed regularly for stable
operation of the product, and recovery cleaning performed in order to restore trans membrane
pressure.
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Raw Water (See p.28 "4-1-1 Pretreatment of Raw water")
Although the term "raw water" is generally used to refer to wastewater that enters treatment facilities, it
is used in this manual to refer to wastewater pretreated using bar screens or similar methods.
* The terms in this glossary are defined based on how they are used in this manual. These definitions and
uses may differ from standard ones. For general terms related to wastewater treatment, refer to the following.
Reference
Gesuido Yogoshu Sewage Terms Glossary 2000 Edition (in Japanese only) Japan Sewage Works
Association
STERAPORE 5700 Series (FF) Instruction Manual
3
2
•d) (reference value). Design flux differs according to
/(m
Chapter 9 Reference materials
2
•h)] (or LMH).
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