PREMIER TECHNICAL RESOURCES — MUNICIPAL GRADE TREATMENT SYSTEMS
FOR ODOR, CORROSION, FOG, BIOLOGICAL, AND BIOSOLIDS PROCESSING
EFFECTIVE, ENVIRONMENTALLY SAFE TOTAL SYSTEM TREATMENT FOR MUNICIPAL WASTEWATER
Force Main With Calcium Nitrate (CaNO3) Liquid Phase Treatment
FORCE MAIN GAS BINDING
Force Main With Calcium Nitrate (CaNO3) Liquid Phase Treatment
CALCIUM
NITRATE
Problem Statement:
Pumping and conveying of wastewater from end user through the collection system to wastewater
treatment plants can result in negative conditions including gas binding, blockages associated
with fats, oils and greases (FOG), and system corrosion. There may be other contributing
conditions, but these factors appear to be the greatest contributors to O&M costs including energy
consumption, maintenance costs, and Sanitary Sewer Overflows (SSOs).
FLOATING
ORGANIC
MATTER &
GREASE
G PRE
INDIN
FOG exacerbated by biological
conditioning caused by nitrates
EA
INCR
AS B
SED G
N2
N2
CO2 CO 2
O2
NO3
■ D
ecrease
maintenance
■ D
ecrease
operating power costs
■ D
ecrease
■I mprove
efficiency due to reduced
discharge pressure in manifolded
force mains
■ S
ave
money
$3,500
$3,000
$2,500
H2S
H2 S
H2S H2S H2S CH4 H2S
H2SO4
H2SO4
H2S
MILE 3
MILE 4
MILE 5
1. Large amounts
of NO3 available
2. O from NO3 used
by bacteria
reducing NO3
to N2 & NO
MILE 6
Acid Producers & Methanogens
Bacteria use O from SO4 producing H2S gas
At pH7 >50% of H2S can be liberated into the gas phase
2
THIOGUARD
®
®
CO2
pH 8.2
CO 2
.2
pH 8
O2
O2
CO 2
CO 2
H 8.2
H 2S
Mg(HS-)2
ARV
H2 S
.2 M
g(HS )
MILE 3
MILE 4
Dissolved O2
used first
producing CO2
No NO3 present
REDUCED
VOSC
H2S
H2S pH 8.2 Mg(HS )2
MILE 5
Facultative Bacteria &
Sulfate Reducing Bacteria
H2S
CO2
CO2
pH 8
2
MILE 2
Aerobic
Bacteria
LESS GAS PRODUCED
p
SO4
PUMPING STATION
INCREASED SURFACE pH = LESS CORROSION
REDUCED GREASE
PLUGGING
MILE 1
O2 SO4
pH 8.2
MILE 6
Acid Producers & Methanogens
Sulfate reducing bacterial activity
THIOGUARD has
greatly reduced producing very little
long range
H2S gas. Liquid/gas phase equilibrium
buffering capacity
shifted to keep HS- in solution
to neutralize
acid attack on
HS- Combines with Mg+ to produce
infrastructure
a soluble magnesium complex
Anaerobic
activity retarded
by increased pH
Force Main With No Liquid Phase Treatment
$2,000
Force Main with No Liquid Phase Treatment
$1,500
Baseline
Nitrate
Thioguard
GREASE ACCUMULATION
PLUGGING ARVs
LOW pH (RED)
HIGHLY CORROSIVE
Save up to 50% per year in pump station power costs by choosing THIOGUARD®
as your odor, FOG and corrosion control process in your collection system.
CO2 CO 2
FLOATING
GREASE
Solution:
THIOGUARD can overcome these issues by reducing or eliminating gas emissions from wastewater,
dissolving FOG blankets and reducing corrosion to pumps and infrastructure. No other product
can match THIOGUARD®'s ability to neutralize both collection system surface acid and wastewater
acid over short and long distances to and through the wastewater treatment plant.
CO 2
MILE 1
O2
O2
®
THIOGUARD.COM | 877.851.5884
H2S
VFAs (Volatile Fatty Acids) are eliminated with calcium nitrate addition that are needed by PAOs
(phosphorus accumulating organisms) for phosphate removal at the wastewater treatment plant.
Less CO2 is produced with THIOGUARD ,
CO2
as CO2 gas is held in solution similarly to H2S
HS
$4,500
$4,000
NO
H2S
®
MINIMAL
GREASE IN
WETWELL
$5,000
ARV
Force Main With THIOGUARD® Treatment
THIOGUARD
500,000 GPD Pump Station Monthly Power Cost
2
®
$24,000 / yr.
FOG related SSOs and
ARV malfunction
THIOGUARD VS NITRATE
N2
N2
INCREASED TRAPPED GAS
H2S H2S
VOSC
VOC
H2S H2S H S
2
H2S
CH4
Force Main With THIOGUARD Treatment
THIOGUARD INCREASES SURFACE
pH TO NEUTRAL pH (WHITE)
PREVENTING INFRASTRUCTURE
CORROSION
®
E
H2SO4
H2S N2
CO H2S N2
Facultative Bacteria &
Sulfate Reducing Bacteria
Dissolved O2
used first
producing CO2
PUMPING STATION
S S UR
MILE 2
®
Choosing THIOGUARD Will:
CO 2
Aerobic
Bacteria
SO4 NO3 O2 NO3
®
N2
MILE 1
O2 N2
NO3
Background:
A collection system line is a unique conveyance system. The transfer of wastewater can result in
the release of gases such as O2 – Oxygen, CO2 – Carbon Dioxide, N2 – Nitrogen Gas, H2S – Hydrogen
Sulfide, CH4 – Methane, VOCs – Volatile Organic Compounds, and VOSCs – Volatile Organic
Sulfur Compounds among others. Some of these gases are drawn into the system through pumping
and ventilation, while others are generated within the system either chemically or biologically.
These gases can result in the development of gas binding in the system, as well as contribute to
odors and corrosion.
LOW pH (RED)
HIGHLY CORROSIVE
N2 gas formed in wet well can cause
suction inefficiency at pump intake
CaNO3
VOSC VOC
H2S N2 H2S
N2
CO2
O2
PUMPING STATION
Aerobic
Bacteria
Dissolved O2
used first
producing CO2
CO 2
CO 2
H 2S
H 2S
H2S
H2S
CO2
H2S
H 2S
H 2S
VOC
VOSC
H2 S
ARV
MILE 2
MILE 3
TRAPPED GAS
H2 S
CO2
MILE 4
Facultative Bacteria &
Sulfate Reducing Bacteria
1. Little or no
NOx present
2. Begin using
other forms of
combined O
H2 S
H2S VOC
H2S
VOSC
CO2 H2S CH4 H2S CH4
MILE 5
MILE 6
Acid Producers & Methanogens
Bacteria use O from SO 4 producing H2S gas
At pH7 >50% of H2S can be liberated into the gas phase
OWNED, MINED AND PRODUCED IN THE USA
H2S
CO2
CH4
Thiobacillus
Bacteria convert
H2S into
Sulfuric Acid
A DIVISION OF
ISO 9002:1994