Mechanical Screens
Manual Screens
The flow enters the plant through a 36" sewer pipe and proceeds through
either a mechanically cleaned screen or a manually cleaned screen. Both
screens are 42 inches wide with spacings of 1 in. The mechanical screen
(shown in the first picture) consists of a rake and carriage system that cleans
the screen every 15 minutes.The timer can be adjusted to accommodate variations
in the flow. The
mechanical screen can be bypassed by inserting a fly gate into the channel.
The flow will then proceed through the manual screen. During the visit both
the mechanical and manual screens were operating because there had been a
problem reinserting the bypass fly gate. The mechanical screen needed
repairs about a year ago and something got jammed into the bypass fly gate slot
so that gate can not be closed. This is not a major inconvenience or a huge
problem and thus there has been no pressing need to fix the problem. Both
screening systems are enclosed. To see and overhead view of the screens click here. The flow into the plant is
measured using a magmeter, which is located in-line between the wet well and
the primary
clarifiers.
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