Headworks Odor & Corrosion Control
Strategically placed upstream of the headworks, an ECO2 System can remove sulfides from the influent wastewater, preventing H2S stripping and the associated odor and corrosion at the headworks.
Prevention Is Better Than Cure
Let’s face it: headworks equipment is expensive and to expose it to high H2S concentrations is irresponsible. While air scrubbers may address the odor before it gets outside, H2S is still in the air and around your equipment inside. So why not remove sulfides before they get to the plant, prevent odors AND corrosion, while also lowering your oxygen demand for dissolved sulfides upstream of your aeration basins.
Primary Clarifier Odor & Corrosion Control
ECO2’s low pressure side stream SuperOxygenation System can effectively keep primary clarifiers aerobic and free from H2S without upsetting the settling cycle.
Reduce Existing, Prevent New Sulfides
Primary clarifiers are often a significant source of odors at wastewater treatment plants. Naturally occurring dissolved oxygen is consumed quickly during the settling process and sulfides are produced as the water goes septic. H2S is released when the water flows over the effluent weirs. Adding dissolved oxygen helps reduce existing sulfides and prevents the formation of new sulfides during the settling process.
ECO2 is an inexpensive alternative to covering and scrubbing the primary clarifiers.
Anson Madison, ME. ECO2 SuperOxygenation Installation
ECO2’s proven sidestream SuperOxygenation System can deliver readily dissolved oxygen where and when you need it. Need to increase the capacity of your aeration basins without wanting to expand? The ECO2 System can deliver more D.O. in the same space.
Ovivo ECO2 SuperOxygenation Installation
The ECO2 System has been proven effective in raw wastewater as well as in high MLSS concentrations. Its robust design with few moving parts and wide openings make it an excellent addition to any MBR, aerobic digester or conventional activated sludge process in need of an additional boost of D.O.
Trouble meeting your D.O. discharge permit ? The adaptable ECO2 SuperOxygenation System can boost your effluent’s D.O. to any desired level. Whether it’s to meet a seasonal permit or to off-set effluent BOD and ammonia for a net-zero impact on the receiving water body.
Kennebunk ECO2 Installation
Easily meet your D.O. Discharge Permit
ECO2 has helped towns across the country comply with their D.O. discharge permits. Site or budget restrictions that don’t allow for the construction of re-aeration basins, the lack of sufficient elevation drop for step-aeration, or simply the need for higher D.O. levels for sensitive downstream waterbodies, are reasons for the implementation of a small footprint ECO2 SuperOxygenation System.
ECO2’s Speece Cone at Port Wentworth, GA
Net-Zero Negative Impact
Off-setting BOD and ammonia with an increased amount of dissolved oxygen has helped one city receive a permit to build their WWTP and discharge into an impaired waterway with a net-zero negative impact.
Force Main Odor Control
The ECO2 SuperOxygenation Technology prevents your sewage from going septic. By effectively dissolving a sufficient amount of oxygen into the force main, the ECO2 SuperOxygenation System maintains aerobic conditions, under which the formation of sulfides (H2S) is prevented.
Untreated H2S Levels
Average: 145 ppm
Treated H2S Levels
Average: 0.4 ppm
ECO2 has proven this concept time and time again. No matter how high H2S concentrations are at the discharge of a force main, where the ECO2 technology is a fit, it will eliminate sulfides and H2S at a fraction of the cost of conventional chemicals. ECO2’s oldest 3 installations on force mains have been in operation since 2003 and are still providing reliable odor & corrosion control today.
ECO2 Systems distinguish themselves through robust design with few moving parts and wide openings, capable of passing raw wastewater. Our non-pressurized systems have the lowest operating costs on the market.
A gravity system naturally limits the amount of oxygen that can be added to the water. This is where ECO2’s years of experience come into play in determining the best points of application for oxygen.
Technology At Work
The ECO2 Technology works equally well in gravity systems as in force mains. A great way to apply dissolved oxygen to gravity collection systems is shortly upstream of the odor release point. Low levels of dissolved oxygen can be used to oxidize and remove existing sulfides from the water before they can strip out as H2S in sensitive areas.
With ECO2 there’s no risk for effervescence. Our side stream systems operate under low pressure and do not supersaturate to a point where spontaneous off-gassing of pure oxygen would occur.
Sulfide Oxidation with Time
Where there is odor, there is corrosion. When gaseous H2S reaches the surface of the sewer infrastructure, Thiobacillus Thiooxidans bacteria oxidize H2S to sulfuric acid (H2SO4), which quickly and tenaciously corrodes concrete and steel.
According to the ASCE Manual for manhole rehab, H2S concentrations of 20ppm corrode concrete at a rate of 1 inch per 5 years. It is therefore crucially important to not just reduce sulfide concentrations, but to eliminate the formation of sulfides, in order to achieve effective corrosion control.
ECO2 has proven for many years the ability to reliably reduce H2S to near non-detect levels to protect your infrastructure from corrosion damage.
Sludge Holding Tanks
Control Odors and Corrosion in Sludge Holding Tanks
High levels of hydrogen sulfide (H2S) exist in Primary and Waste Activated Sludge. This presents a problem in the sludge holding tanks and solids handling facilities, where the H2S gas causes foul odors and equipment deterioration due to its highly corrosive properties.