Activated Sludge Northern Operatorsl
Transcript of Activated Sludge Northern Operatorsl
-
7/27/2019 Activated Sludge Northern Operatorsl
1/50
Activated Sludge
The Good the Bad and the Ugly
Steve Aiken
Senior Project Manager, Stantec Consulting - Michigan
-
7/27/2019 Activated Sludge Northern Operatorsl
2/50
Overview of the talk
Background (2 min)
Overview on Activated Sludge (8 min) Touch on Nitrification (5 min)
Foaming (10 min) Bulking sludge (10 min)
Organisms in Activated Sludge (5 min)
Questions/Comments (throughout the talk)
-
7/27/2019 Activated Sludge Northern Operatorsl
3/50
Background
Michigan Class A Municipal License (1979)
10 Different Industrial Licenses
BS Degree Civil Engineering (1980)
-
7/27/2019 Activated Sludge Northern Operatorsl
4/50
BackgroundBackground37 Years of Experience operating/managingaround 50 different treatment plants also
involved in engineering design and projectmanagement during my tenure
Extended Aeration 24Conventional Activated Sludge 5
2 Stage Activated Sludge 2
SBRs 9
Complete Nitrification/Denit 2A/O Process Activated Sludge 1
UV/OX 1Lagoon 2
Water Plants 4
-
7/27/2019 Activated Sludge Northern Operatorsl
5/50
It Could Be that the Purpose of Your Life is Only to
Serve as a Warning to Others
-
7/27/2019 Activated Sludge Northern Operatorsl
6/50
Overview of Activated Sludge
-
7/27/2019 Activated Sludge Northern Operatorsl
7/50
BOD5 Removal
Hetrorophic Bacteria
Absorbed Organics
Cell
New Cells
Cell Membrane
Products of Synthesis
Adsorbed Products
NH3 CO2H2O
Soluble Organics
Products of Respiration
-
7/27/2019 Activated Sludge Northern Operatorsl
8/50
What is the activated sludge process?
Air
Aeration
tank
Secondary
clarifier
Influent MLSS Effluent
Return Activated Sludge
Waste Activated Activated Sludge
Conventional Process
-
7/27/2019 Activated Sludge Northern Operatorsl
9/50
Biological Phosphorus Removal
Aeration
tankSecondary
clarifier
MLSS
Air
Anaerobic Tank
Mixing
Influent Effluent
Return Activated Sludge
Waste Activated Activated Sludge
-
7/27/2019 Activated Sludge Northern Operatorsl
10/50
Nitrification / Denitrification
Aeration
tankSecondary
clarifier
MLSS
Air
Anoxic Tank
Mixing
Influent Effluent
Internal Recycle
Return Activated Sludge
Waste Activated Activated Sludge
-
7/27/2019 Activated Sludge Northern Operatorsl
11/50
Sequencing Batch Reactor (SBR)
Fill (mixing with or without air)
Decant
Settle
React
Time
Idle
-
7/27/2019 Activated Sludge Northern Operatorsl
12/50
Oxidation Ditch
-
7/27/2019 Activated Sludge Northern Operatorsl
13/50
NH3
-N Removal
Autotrophic Bacteria
Ammonia Nitrogen Nitrite Nitrogen Nitrate Nitrogen
NitrobactorNitrosomonas
Autotrophic Bacteria can consume inorganic material as a food source
Nitrification
-
7/27/2019 Activated Sludge Northern Operatorsl
14/50
Nitrosomonas at 1000x
-
7/27/2019 Activated Sludge Northern Operatorsl
15/50
-
7/27/2019 Activated Sludge Northern Operatorsl
16/50
FOAM
-
7/27/2019 Activated Sludge Northern Operatorsl
17/50
-
7/27/2019 Activated Sludge Northern Operatorsl
18/50
FOAM
When things go well
Trouble coming
-
7/27/2019 Activated Sludge Northern Operatorsl
19/50
Foam Goes Wild
-
7/27/2019 Activated Sludge Northern Operatorsl
20/50
-
7/27/2019 Activated Sludge Northern Operatorsl
21/50
Foam
-
7/27/2019 Activated Sludge Northern Operatorsl
22/50
Microthrix Parvicella (m. Parvicella)
F/M can be lowered by increased sludge wasting Reducing sludge age helps. If possible increase grease
and fat control on the influent if applicable
use of a selector
Extensive chlorination or RAS chlorination can be
used Poly Aluminum Chloride (PAX)
-
7/27/2019 Activated Sludge Northern Operatorsl
23/50
Before and After PAX addition
-
7/27/2019 Activated Sludge Northern Operatorsl
24/50
Nocardia
F/M can be lowered by increased sludge wasting Reducing sludge age helps. If possible increase grease
and fat control on the influent if applicable
use of a selector
Extensive chlorination or RAS chlorination should
definitely be considered Aeration tank design ALWAYS Overflow the
tank
-
7/27/2019 Activated Sludge Northern Operatorsl
25/50
Nocardia
-
7/27/2019 Activated Sludge Northern Operatorsl
26/50
-
7/27/2019 Activated Sludge Northern Operatorsl
27/50
Bulking Sludge
D i t fil t t i di t f diti
-
7/27/2019 Activated Sludge Northern Operatorsl
28/50
Dominant filament types as indicators of conditions
causing activated sludge bulking and foaming
Suggested Causative Conditions Indicative Filament Types
Low DO
Low F/M
Septic Wastewater/Sulfide
Nutrient Deficiency
Low pH
Type 1701, S. natans, .H. hydrossis
M. parvicellaH. hydrossis,
Nocardia sp.
Types 021N, 0041, 0675, 0092,0581, 0961, 0803, 1863
Thiothrixsp., Beggiatoaand type 021N
Thiothrixsp., S. natansType 021N, and possibly H.hydrossis and types 0041 and0675.
fungi
Richard, et. al., 1982al aStrom and J enkins, 1984.
-
7/27/2019 Activated Sludge Northern Operatorsl
29/50
Setting test
-
7/27/2019 Activated Sludge Northern Operatorsl
30/50
Aeration Tank Sett ling
0
20
40
60
80
100
120
140
160
180
200
1/1 1/16 1/31 2/15 3/1 3/16 3/31 4/15 4/30 5/15 5/30 6/14 6/29 7/14 7/29 8/13 8/28 9/12 9/27 10/12 10/27 11/11 11/26 12/11 12/26
SVI
Sludge Volume Index (SVI)
O i i A i d Sl d
-
7/27/2019 Activated Sludge Northern Operatorsl
31/50
Organisms in Activated Sludge
Good Floc 100x
-
7/27/2019 Activated Sludge Northern Operatorsl
32/50
Good Floc 100x
S i 200
-
7/27/2019 Activated Sludge Northern Operatorsl
33/50
Suctorian 200x
St lk d Cilli 100
-
7/27/2019 Activated Sludge Northern Operatorsl
34/50
Stalked Cillia 100x
St lk d Cilli 100
-
7/27/2019 Activated Sludge Northern Operatorsl
35/50
Stalked Cillia 100x
Stalked Cillia 100
-
7/27/2019 Activated Sludge Northern Operatorsl
36/50
Stalked Cillia 100x
Rotifer
-
7/27/2019 Activated Sludge Northern Operatorsl
37/50
Rotifer
Zoogloea Mass with India Ink at
-
7/27/2019 Activated Sludge Northern Operatorsl
38/50
Zoogloea Mass with India Ink at
1000x
m Parvicella 1000x
-
7/27/2019 Activated Sludge Northern Operatorsl
39/50
m Parvicella 1000x
m Parvicella at 1000x
-
7/27/2019 Activated Sludge Northern Operatorsl
40/50
m. Parvicella at 1000x
T 0581 Filament at 1000x
-
7/27/2019 Activated Sludge Northern Operatorsl
41/50
T-0581 Filament at 1000x
T 0914 Filament at 1000x
-
7/27/2019 Activated Sludge Northern Operatorsl
42/50
T-0914 Filament at 1000x
T-0041 Filament at 1000x
-
7/27/2019 Activated Sludge Northern Operatorsl
43/50
T-0041 Filament at 1000x
T-0675 Filament at 1000x
-
7/27/2019 Activated Sludge Northern Operatorsl
44/50
T-0675 Filament at 1000x
T-1863 Filament at 1000x
-
7/27/2019 Activated Sludge Northern Operatorsl
45/50
T-1863 Filament at 1000x
Type 0092
-
7/27/2019 Activated Sludge Northern Operatorsl
46/50
yp
Type O21N
-
7/27/2019 Activated Sludge Northern Operatorsl
47/50
yp
Beggiatoa
-
7/27/2019 Activated Sludge Northern Operatorsl
48/50
Beggiatoa
-
7/27/2019 Activated Sludge Northern Operatorsl
49/50
Dr. Michael Richard
Wastewater Microbiology Consulting
-
7/27/2019 Activated Sludge Northern Operatorsl
50/50
gy g
Phone - 970 223-6571
email - [email protected] mrwwm.com for sample delivery
Microscopic Analysis $350
Polysaccharide Test $200
Thank You
&Questions