M&M Work Schedules
Wastewater Treatment Plants
Quarterly
Processes and Equipment
Grit
Chamber, Primary and Final Clarifiers, and Chlorine Contact Chambers
·
Dye test to check for short
circuiting
Laboratory Tests
·
Analyze grit for total and
volatile solids
·
Microscopically examine trickling
filter zoogleal mass
·
Analyze lagoon transfer structure
effluent for BOD, D.O., pH, settleable solids, suspended solids, ammonia, and
nitrates
Semi-Annual
Electrical/Mechanical Equipment
·
Change oils
Þ
Look for metal parts
·
Grease
Chlorinator
·
Clean and inspect pressure
regulator
Control Panels
·
Clean and inspect inside of the
panel
·
Check resistance
Pumps
·
Piston
Þ
Check drive units and piston
alignment and movement
·
Progressive cavity
Þ
Check condition of the stator,
rotor, shaft, and pins
Furnace
·
Clean and inspect tubes, firebox,
orifices, expansion tanks, and electrode arc gap
·
Clean and inspect heat exchanger
(sludge tubes)
Yearly
Processes and Equipment
Channels,
Headworks, Screening Devices, Comminuters, Barminuters, Grit Chambers, Primary
and Final Clarifiers, Trickling Filters, Activated Sludge Aeration Tanks,
Chlorine Contact Chambers, Flow Measuring Devices and Wet Wells
·
Dewater and inspect all tank parts
Chlorination
·
Calibrate scale
·
Replace auxiliary valve, pigtail,
gaskets, and O-rings
·
Clean and inspect interior parts
of the chlorinator
Anaerobic Digesters
·
Inspect the gas system
·
Have gas meter professionally
calibrated
Control Panels
·
Clean and inspect stabs
Pumps
·
Clean and inspect
Þ
Centrifugal
*
Inspect impeller, volute, shaft,
and wear sleeve for wear, pitting, and chipping
·
Check tolerances
·
Check and record efficiency
Þ
Hydraulic
Þ
Electrical
Blowers and Compressors
·
Clean and inspect
·
Check tolerances
·
Check and record efficiency
Flow Meter and Recorder
·
Have professionally calibrated
Every
Three Years
Anaerobic Digesters
·
Clean tank and inspect equipment
Tips
Greasing
·
Don’t over lubricate
Changing Oil
·
Look for metal parts
Repacking
·
Remove and replace all old packing
Þ
Check for metal bits
·
Properly replace and align lantern
ring
Return to M&M Work Schedules
For more information, call 515-232-1663