Conventional wisdom says that wastewater and sewer odors increase in the collection system during the summer due in large part to increased volatility and an increase of anaerobic bacterial activity (anaerobic activity is extremely odorous due to reduced sulfides).
Additionally, oxygen is less soluble at higher temperatures which leads to these anaerobic conditions. In municipal wastewater, heat = less soluble oxygen = anaerobic conditions = increases in odor due to reduced sulfides.
Concentration levels of hydrogen sulfide in most wastewater collection systems and sludge processing plants are dependent on several factors.
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Residence or Retention Time – everyday, miles of sewer lines are installed to accommodate economic and residential expansion. As a result, sewer lines are often oversized to compensate for the rapid growth. These oversized sewer lines lead to greater wastewater residence times. High levels of hydrogen sulfide are produced during these residence times.
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Temperature – sulfate reducing bacteria thrive in the wastewater stream in elevated temperatures up to 98°F. Therefore, the higher the temperature of the wastewater, the greater concentration of sulfate reducing bacterium that produce hydrogen sulfide.
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Microorganism and Sulfate Counts – sulfates serve as an oxygen source for microorganisms in the wastewater stream. When sulfates are consumed, hydrogen sulfide is produced by the microorganisms as a by-product. Thus, the greater the sulfate levels in the wastewater stream, the greater concentration of sulfate reducing bacterium that produce hydrogen sulfide.
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Agitation – although agitation does not affect the amount of hydrogen sulfide produced, it does play a factor in how much hydrogen sulfide is released. The greater the agitation in a manhole or pump station, the greater amount of hydrogen sulfide that will be released into the air.
Plan Now For Summer Heat and Increased Odor:
CITCO Water’s Odor Control Solutions To Prevent Hydrogen Sulfide
Our complete collection system odor control service includes:
- Reliable and Professional Bulk Chemical Delivery by CITCO Water Fleet
- The end of community odor complaints
- Custom-Built Odor Control Chemical Feed Systems, Installation & Preventive Maintenance
- Hydrogen Sulfide Odor Origin Location
- On-Going Hydrogen Sulfide Testing
- Nitra-Nox Chemical Inventory Management Through CITCO Water Remote Tank Monitoring
- Collection System Mapping to Provide Strategic and Accurate Feed Location
- Performance-Based Monthly Reporting
Perfect For A 30 or 60-Day Odor Control Trial – Tote Mount Chemical Feed System
Simple, effective and perfect for a 30 or 60-day odor control trial, the Tote Mount Chemical Feed System is easily installed and maintained by CITCO Water personnel for a variety of odor control scenarios. Desired daily feed rate only needs determined to complete order and installation.
- Perfect for a 30 or 60-day odor control trial
- Easily installed and maintained
- mini-bulk fill opportunities
- Customizable based on feed location and feed rate
Odor Control For Hydrogen Sulfide Prevention – A Proven, Effective Solution With CITCO Water Odor Control Systems
Nitra-Nox is a preventive odor control chemistry designed to halt the production of hydrogen sulfide in wastewater. It prevents corrosion to wastewater treatment collection systems and equipment while fighting other odors found in wastewater.
Nitra-Nox is a non-hazardous solution proven to prevent hydrogen sulfide odor and corrosion by serving as an alternative oxygen source to the anaerobic bacteria found in wastewater.
- Non-hazardous
- Prevents corrosion to wastewater collection system and equipment
- Does not affect the pH of wastewater
- Reduces health threats to utility personnel
- Reduces BOD