Reducing Hydrogen Sulfide Levels at a Sludge Dewatering Facility |
A wastewater treatment plant located
in the southern part of the United States was experiencing
severe odor problems at their sludge dewatering facility.
The facility processes approximately 110,000 gallons per day
of primary sludge. During normal operations, atmospheric H2S
levels as high as 555 ppm were reported. The application of
potassium permanganate at 93 mg/L successfully reduced this
level to as low as 2 ppm during the first few minutes. |
Treatment with CAIROX ® Potassium Permanganate |
Due to the very short reaction time available,
a chemical that would provide almost immediate odor control
was required. Carus Corporation recommended the use of
CAIROX® Potassium Permanganate. CAIROX® was fed through a
CXF-1000 feeder equiped with a 15 gallon dissolver tank and
pump. The permanganate solution was injected into the discharge
side of the sludge dewatering feed pump. Hydrogen sulfide
levels that were averaging 555 ppm, determined by data logging
Hydrogen sulfide monitors, were immediately reduced to less than 2 ppm
(Figure 1). In addition, polymer consumption was reduced from
75 to 33 pounds per day (Figure 2) for savings of approximately
$10,000 per year.
|
Conclusions from the Sludge Dewatering
Facility Study |
Cairox Potassium Permanganate effectively:
- Controlled Hydrogen sulfide and other odors
- Significantly reduced polymer usage by over 44%
- Saved approximately $10,000 in yearly polymer expenses
- Reduced corrosion, overall maintenance costs and minimized employees exposure to H2S
- Provided a safe, simple, easy to install
and effective solution to a common municipal sludge dewatering
problem
|
For More Information |
For further information on CAIROX ® potassium permanganate product characteristics and availability, contact Carus Corporation at 1-800-435-6856. |
