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3. Toray Maintenance Cleaning
Instead of chemical dosing for every backwash, soaking the membrane to
chemical solution several tens of minutes a day is also effective for membrane
performance retention. This process is called Toray Maintenance Cleaning
(TMC). The TMC is usually held following the backwash and air-scrubbing
which does not contain the chemical dosing. The frequency and soaking time
of the TMC mainly depends on the raw water quality (Normally once a day and
each soaking time are 20 minutes. Please contact us if you need technical
support.). Fig. 5 shows a typical example of flow diagram for the TMC.
Fig. 5 Flow diagram for the TMC
