DVZ Biomaster PLUS Series, Финальная документация

Страница: 61 / 145

Issue: 16.08.2010 Instruction Manual DVZ-SKA “BIOMASTER“-PLUS Page 11 of 39
The permeate lift is an option and will be integrated in the STP, if the customer has
ordered it.
2.3 Automatical conditioning-, flushing- and chemical cleaning – system
for BMSU:
The BMSU system has a multiplex, automatical working conditioning-, flushing- and
chemical cleaning (CIP) system.
The membrane conditioning and membrane flushing works according to the PLC time
controlled.
The chemical cleaning will be done semi automatic. For that procedure, it is necessary to
switch some valves manually, which will be shown (guided) in PLC monitor.
Membrane conditioning:
Picture 1
The above picture shows the methode of membrane conditioning.
For conditioning the BMSU-Membrane the loading pump (P2) will be interrupt for app. 10
sec. and the BMSU over flow pump (P1) keep on running. Periode and interval is PLC
controlled. The over flow polishing the membrane (diaphragm) surface and flushed out
precipitated parts from the surface (see picture 1).
Flushing system (hydraulical cleaning) (see picture 2)
Depends on the pollution of sewage with hairs, paper rests and fibers, the flow against the ends
of diaphragm tubes will be blocked (mechanical blocking).
The module has an upper- (head) and under- (foot) flow against the tube ends.