Experience from start-up and operation of ANITA™ Mox plants and development of a new Hybas™ ANITA™ Mox process Nitrogen Removal Technologies 15 th May Leeds Romain Lemaire (Veolia Water, Paris) Magnus Christensson (AnoxKaldnes) Bruno Bigot (Veolia Water Solutions & Technologies UK)
30
Embed
Experience from start-up and operation of ANITA™ Mox ... · BioFarm seeding strategy = Quicker Start-up 6 references : • Malmö WWTP (Sweden) 200 kgN/d reject water 2010 • Växjö
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Transcript
Experience from start-up and
operation of ANITA™ Mox plants and development of a new
Hybas™ ANITA™ Mox process
Nitrogen Removal Technologies 15th May Leeds
Romain Lemaire (Veolia Water, Paris) Magnus Christensson (AnoxKaldnes) Bruno Bigot (Veolia Water Solutions & Technologies UK)
COD
O2
NO3-
AOB
COD
Heterotrops
NH4+
NO2-
NOB
55%
45%
Anammox Bacteria
N2 + NO3-
Anammox
NH4+
NO2-
89% 11%
O2
(40%)
Anoxic Aerobic
O2
COD
(0%)
Principle – ANITA™ Mox
1-stage Deammonification -60% O2 -100% COD
ANITA™ Mox – MBBR process
Biofilm Media
Liquid
Nitritation
NH4+
NO2- AOB
Anammox
N2 O2
Aerobic
Anoxic Simultaneous in biofilm
MBBR
High sludge retention time (SRT) needed
Necessity to protect anammox bacteria (O2 / NO2) Biofilm
Necessity to keep bacteria into the system (avoid washout)
Maximum robustness and stability desired
ANITA™ Mox – Sjölunda WWTP, Malmö (Sweden)
4 x 50m3 = 200m3
Sjölunda WWTP reject water Capacity = 200 kgN/d 800-1200 mgN-NH4/L 1st ANITA™ Mox reference Flexibility for fullscale testing
K3 500 m2/m3
K5 800 m2/m3
BiofilmChip M 1200 m2/m3
ANITA™ Mox – Different Media tested
MBBR = Media + Grid No risk of losing Anammox biomass
ANITA™ Mox – BioFarm concept
BioFarm concept = Providing seeded carriers for rapid start-up of
future full-scale ANITATM Mox units
Seeded carriers
New carriers during start-up
0
0,1
0,2
0,3
0,4
0,5
0,6
0,7
0,8
0,9
1
1,1
1,2
1,3
1,4
1,5
0 50 100 150 200 250 300 350 400 450 500 550 600
NH
4 lo
ad &
rem
ova
l rat
es (
kgN
/m3
.d)
15
17
19
21
23
25
27
29
31
33
35
T°C
NH4-N loadNH4-N remT°C
BioFarm – N-load / NH4-rem
130
1.1 kgN-NH4/m3.d in 4 months with only 3% seeding
reject water supply limitation
0
10
20
30
40
50
60
70
80
90
100
0 50 100 150 200 250 300 350 400 450 500 550 600
Days
NH
4 &
TN
re
mo
ved
(%
), N
O3
/NH
4
TN removal %
NH4 removal %
% NO3-prod / NH4-rem
BioFarm – Performance
11
90
80
90% NH4 removal and 80% TN removal
Patented DO control strategy reduce NO3 production <11%