M&M Work Schedules
Wastewater Treatment Plants
Daily Headworks, Screening, and Grit Removal
Headworks
·
Check flow
for unusual colors and odors
·
Check water
level
·
Perform
housekeeping -- hose down area, remove floating and/or lodged debris and rags,
and dispose of properly, and clean area
Hand
Cleaned Bar Screen
·
Check screen
for plugging
·
Check flow
for unusual colors and odors
·
Check water
level upstream, thru, and downstream of the screen
·
Rake screen
·
Dispose of
screenings properly
·
Record
amount of screenings removed
·
Perform
housekeeping -- hose down area, remove floating and/or lodged debris and rags,
and dispose of properly, and clean area
Mechanically
Cleaned Bar Screen
·
Check screen
for plugging
·
Check the
screenings pile
·
Check rake
mechanism for rakes are level, proper movement, rake alignment, and chain
tension, excessive and/or unusual noises (especially banging), vibrations, and
odors (especially burning)
Þ
Check motor
(see motor below)
Þ
Check drive
chain (see drives below)
Þ
Check oil
levels
Þ
Check
controls for proper cycling and intervals
·
Check
elevator or conveyor
Þ
Check
mechanism and remove rags
Þ
Check hopper
to see how full
Þ
Check wash
down water for proper flow
Þ
Check motor
(see motor below)
Þ
Check drive
chain (see drives below)
Þ
Check oil
levels
Þ
Check
controls for proper cycling and intervals
·
Check flow
for unusual colors and odors
·
Check water
level upstream, thru, and downstream of the screen
·
Dispose of
screenings properly
·
Record
amount of screenings removed
·
Perform
housekeeping -- hose down area, wipe off excess oil and grease, remove floating
and/or lodged debris and rags, and dispose of properly, and clean area
Screenings
Grinder
·
Grind
screenings
Þ
Turn on
grinder and flushing water before adding screenings
Þ
Rake
screenings into hopper, being sure to remove all non-grindable objects, such as
cans, sticks, large rags, wire
Þ
Check
particle size of screenings returning to the flow
Þ
Adjust water
flow
Þ
Determine if
teeth need sharpening
Þ
Allow
grinder and flushing water to run at least 5 minutes after done grinding
screenings
·
Check
grinder for plugging, proper movement and cutting action, excessive and/or
unusual heat, noises, vibrations, and odors (especially burning)
·
Check motor
(see motor below)
·
Check oil
levels
·
Perform
housekeeping -- hose down area, wipe off excess oil and grease, remove floating
and/or lodged debris and rags, and dispose of properly, and clean area
Revolving
Drum Comminuter
·
Check drum
for plugging, proper movement and cutting action, excessive and/or unusual
noises (especially banging), vibrations, and odors (especially burning)
·
Check motor
(see motor below)
·
Check oil
levels
·
Check flow
for unusual colors and odors
·
Check water
level upstream, thru, and downstream of the comminuter
·
Perform
housekeeping -- hose down area, wipe off excess oil and grease, remove floating
and/or lodged debris and rags, and dispose of properly, and clean area
Moving
Wiper Comminuter
·
Check screen
for plugging
·
Check wiper
for proper movement and cutting action, excessive and/or unusual noises
(especially banging), vibrations, and odors (especially burning)
·
Check motor
(see motor below)
·
Check oil
levels
·
Check flow
for unusual colors and odors
·
Check water
level upstream, thru, and downstream of the comminuter
·
Perform
housekeeping -- hose down area, wipe off excess oil and grease, remove floating
and/or lodged debris and rags, and dispose of properly, and clean area
Barminuter
·
Check screen
for plugging
·
Check
cutting mechanism for proper movement, cutting action, alignment, chain tension,
excessive and/or unusual noises (especially banging), jerking, vibrations, and
odors (especially burning)
Þ
No up and
down, sideways movement, or back and forth
Þ
Watch
start-up
*
Motor and
cutters should start simultaneously, no hesitation or time delay in cutter
starting
*
Cutters
should be up to speed immediately
·
Check motor
(see motor below)
·
Check oil
levels
·
Check seals
for leaks
·
Check flow
for unusual colors and odors
·
Check water
level upstream, thru, and downstream of the barminuter
·
Check
cutting mechanism controls for proper cycling and intervals
·
Perform
housekeeping -- hose down area, wipe off excess oil and grease, remove floating
and/or lodged debris and rags, and dispose of properly, and clean area
Hand
Cleaned Grit Chamber
·
Check grit
depth and location
·
Check odors
·
Check flow
for unusual colors and odors
·
Check water
level upstream, thru, and downstream of the grit chamber
·
Perform
housekeeping -- hose down area, remove floating and/or lodged debris and rags,
and dispose of properly, and clean area
Mechanically
Cleaned Grit Chamber
·
Check grit
removal mechanism for proper movement, bucket alignment, chain tension,
excessive and/or unusual noises (especially banging), jerking, vibrations, and
odors (especially burning)
·
Check motor
(see motor below)
·
Check drive
chain and chain drive (see drives below)
·
Check
elevator or screw conveyor
Þ
Check hopper
to see how full
Þ
Check screw
and remove rags
Þ
Check wash
down water for proper flow
·
Check oil
levels
·
Check grit
removal mechanism controls for proper cycling and intervals
·
Check flow
for unusual colors and odors
·
Check water
level upstream, thru, and downstream of the grit chamber
·
Check grit
pile
·
Dispose of
grit properly
·
Record
amount of grit removed
·
Perform
housekeeping -- hose down area, wipe off excess oil and grease, remove floating
and/or lodged debris and rags, and dispose of properly, and clean area
Aerated
Grit Chamber
·
Check tank
surface for proper aeration and foam control
Þ
Check
pattern and size of air bubbles
Þ
Check scum
and foam build-up on tank surface and walkways
Þ
Check foam
control spray
*
Spray
pattern and force
*
Clean if
necessary
Þ
Check the
controls, motor, drives, blowers, headers, and diffusers
*
Check oil
levels
·
Check grit
removal mechanism for proper movement, excessive and/or unusual noises
(especially banging), jerking, vibrations, and odors (especially burning)
*
Check
controls, motor, and drives
*
Check oil
levels
Þ
Check
buckets
*
Watch the
mechanism to see that it is moving properly -- smoothly with no jerking.
à
Bucket
alignment
à
Chain
tension
*
Listen for
excessive and/or unusual noises (especially banging)
*
Feel for
excessive and/or unusual vibrations
*
Smell for
excessive and/or unusual odors (especially burning)
Þ
Check
elevator or screw conveyor
*
Look at the
hopper to see how full it is
*
Watch screw
and remove rags
*
Watch wash
down water for proper flow
Þ
Check
cyclone
*
Watch to see
if grit is plugged or freely leaving end of cyclone
*
Check the
water discharge for flow, color, and odors
*
Look for
water leaks
·
Check flow
for unusual colors and odors
·
Check water
level upstream, thru, and downstream of the grit chamber
·
Check grit
pile
·
Dispose of
grit properly
·
Record
amount of grit removed
·
Perform
housekeeping -- hose down area, wipe off excess oil and grease, remove floating
and/or lodged debris and rags, and dispose of properly, and clean area
Return to M&M Work Schedules
For more information, call 515-232-1663