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336-547-9338
or visit:
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3.4
Emergency Storage and Alarm Conditions
PuraSys SBR controls the movement of effluent through the system in a timed
sequence of batches. PuraSys SBR incorporates a clear water discharge pump. Since
treated effluent is timed dosed from the system, adequate emergency storage
must be provided. This is typically provided in the pretreatment tank due to the
operational sequence of the controls. For a one tank, 2-compartment configuration,
the reactor chamber can be included in the emergency storage calculations.
1.
One Tank, 2-Compartment Configuration
The total emergency storage volume is calculated based on the available
volume in the pretreatment tank and the reactor chamber/tank above the
normal operating levels to the inside tank lid. Since the chambers are con-
nected via the air space above the baffle wall, volume in both chambers can
be counted for emergency storage. In some jurisdictions, the riser volume can
be counted for emergency storage. Emergency storage can be calculated as
follows:
Pretreatment tank:
Determine the volume between the top siphon hole to
the top of the tank (inside lid).
Reactor chamber:
Determine the volume between the high water alarm
and the top of the tank (inside lid).
If allowed per local jurisdiction, determine the volume in the risers.
Total storage volume = Pretre R Risers
Emergency storage in typical two compartment tank
Figure 4
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