WQ0000185_Operation and Maintenance Plan_20210407

FINAL
OPERATION AND MAINTENANCE
PLAN
For
Odor Control System for Sludge Holding Tanks
Ocean Sands Wastewater Treatment Plant
200,000 GPD, Phase 1
DEQ Permit No. WQ0000185
County of Currituck
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DATE: April 7, 2021

General Operation
The purpose of the blower is to reduce the odors of the sludge holding tanks by aerating and mixing the
sludge to prevent the formation of a hard, crust -like layer. The blower for the two sludge holding tanks
shall be operated manually by the plant operator. Run the blower as needed to prevent the formation
of a sludge blanket and to reduce odors. The blower can be turned off to allow solids to settle and to
allow an improved quality of decant to the head of the plant.
Two butterfly valves are located on the air piping near the blower and is used to divert air flow to the
desired sludge holding tank. The valves are one -quarter turn with notches to fine tune air flow. One
tank can be aerated or both tanks simultaneously. It is important that a butterfly valve is open prior to
starting the blower.
The blower is turned on and off by a switch located on the building wall next to the blower. There is a
separate switch for the cooling fan in the blower housing which is located next to the blower switch.
This cooling fan should be operated while the blower is in operation. The blower shall be operated as
necessary to prevent the formation of a sludge blanket and to reduce odors.
General Maintenance
The operator shall follow the maintenance schedules listed in the operations and maintenance manual
provided by the manufacturer of the equipment. In general, the operator shall be familiar with the
manufacturer's manual by carefully reading through it before operating the equipment.