BioResolve
Nitrifiers
Naturally effective
wastewater treatment
Ammonia build-up can cause significant issues in terms of plant
performance and result in heavy fines if consent levels are not met.
Nitrifying bacteria remove ammonia, but nitrification is more easily
interrupted compared to other biological wastewater treatment
processes because these microbes are slow growing and highly
susceptible to chemical and physical challenges. This can lead to
plant failure and slow recovery.
Reduce
waste water
costs
Achieve
consent
levels
Improve
plant
efficiency
BioResolve
Ammonia is highly toxic to fish and other wildlife and causes considerable oxygen
depletion in receiving waters. As such, wastewater treatment plants (WWTP) with
such contamination are given exceptionally low consent limits and can face costly
fines if breached.
Ammonia is removed by nitrification, a process carried out by
nitrifying bacteria and is one of the most important and
difficult processes to maintain in a WWTP. This process relies
on the ability of the nitrifying bacteria to ensure this process is
optimised.
Nitrifying bacteria are extremely sensitive to environmental
factors, toxicity, shock loading and solids loss. They cannot be
converted into powders and die rapidly unless refrigerated.
They are extremely slow growing (7-20hr doubling time) and
have exacting growth requirements in terms of dissolved
oxygen, temperature, pH and levels of organic matter. Biocides
and other inhibitory substances can also affect performance.
BioResolve Nitrifiers consist of tailored nitrifying bacteria
designed to thrive in a wide range of wastewater types
and respond extremely quickly to restore nitrification as
shown below.
Biological Preparations uses a bespoke in-house
fermentation process to produce the products in
concentrated liquid form. Each batch is
activity-tested and shipped in refrigerated containers
for immediate use or fridge storage with an activity of
up to 5000mg ammonia or nitrite oxidised per kg of
product per hour.
The bacteria are normally added to the nitrifying zone of the
WWTP and ammonia and/or nitrite removal begins
immediately. They may be used to establish activity in newly
constructed or seasonally operated plants, to reseed a plant
after toxic shock or to improve the ability of the existing
biomass to meet ammonia consent levels.
Activity of BioResolve Nitrifiers A5000
300
The nitrification process takes
place in two stages:
Ammonia-N (mg/L)
250
200
1 The oxidation of ammonia to hydroxylamine,
150
then conversion to nitrite, carried out by species
such as Nitrosomonas.
100
2 The oxidation of nitrite to nitrate by species
50
0
such as Nitrobacter.
0
1
2
3
4
5
6
7
8
Time (h)
What we can do for you
Biological Preparations experts can advise on optimising conditions, provide information about ammonia loading, effluent
flow and hours of operation and devise a dosing programme in order for operators to maximise performance.
L E T B I O LO G I C A L P R E PA R AT I O N S WA S T E WAT E R E X P E R T S H E L P Y O U TO D AY
T: +44 (0)29 2067 4090
www.biologicalpreparations.com