Biological odor control
Novozymes' OdorCap™ 5700 contains a high concentration of patented odor-degrading microorganisms that can degrade hydrogen sulfide, mercaptans, and volatile fatty acid, helping to improve odor control, lower operating costs, and simplify operations. Biotechnology has been used in wastewater treatment systems for years due to its effectiveness at degrading organics. By adding microorganisms to degrade odor-causing compounds, odors can be mitigated and prevented.
Novozymes Biologicals Inc.
Biological air treatment
Purafil's Biological Air Treater (BAT) provides odor removal at wide ranges of airflow and concentrations. The system's odor abatement and volatile organic compounds treatment can remove over 99 percent of hydrogen sulfide gas. The mixed media of foam cubes and spacers inside the BAT has been proven in various applications over the past 15 years. Ratios of foam-to-plastic vary based on a scientifically engineered formula customized for each application.
Biological odor control
The BIO-PRO® biological odor control system can be used to remove H2S and reduced sulfur compound (RSC) odors generated during the treatment of municipal wastewater at pump stations, headworks and dewatering applications. The system uses the patented Bio-AirSphere™ media technology, a unique combination of synthetic and organic medias that provide the proper environment for promoting bacteria growth to eliminate odorous compounds.
Met-Pro Environmental Air Solutions – Duall
ECO2 SuperOxygenation technology is an environmentally friendly odor and corrosion control solution that can be applied in force mains or upstream of headworks and primary clarifiers to avoid corrosion problems in these otherwise hard to control locations. The system dissolves pure oxygen at >90% absorption efficiency into wastewater under pressure to achieve DO concentrations of 50 to >150 mg/L. An ECO2 System can be added to current facilities in virtually any location or footprint.
ECO Oxygen Technologies
BioAir Solutions' EPM2 odor control system uses the company's EcoBase® structured, synthetic biotrickling filter media. The patented media provides uniform air flow distribution, optimized mass transfer and a controlled microenvironment enabling the growth and proliferation of specific bacteria that consume odor compounds normally present in wastewater collection systems. The system eliminates the need for chemicals to control odors. The company can provide units that handle airstreams ranging from 300 to 1,000 cfm.
Hydrogen sulfide removal
Filtronics offers several technologies to remove sulfur odors. Which method to use depends upon existing circumstances and the particular characteristics of the water. There is no one-size-fits-all system because the degree of concentration of the hydrogen sulfide, other contaminants present, geographic location, and additional factors will produce different challenges in the treatment required. The company's H2S Transformer is a simple solution that treats flows from 10 to 250 gpm and more, is skid mounted, includes a control panel, and produces zero discharge.
OMI Industries offers natural odor neutralizing products. Its Ecosorb® formula has been successful in industrial settings dealing with year-round malodor problems including municipal and industrial wastewater treatment plants. It is suited for odors generated in varying degrees throughout the wastewater treatment process, including those associated with pump stations, head works, clarifiers, digesters, aeration basins, lagoons and sludge handling areas.
Microbial odor control
Bioscience has published a new technical FAQ data sheet for its odor-control product, Microcat®-ANL. The document describes the biochemistry of odor reduction, composition of the product, effects on downstream wastewater treatment plants, and provides a cost comparison with other odor control methods. The product is applied in wastewater treatment plants, sludge processing facilities and lagoons to control hydrogen sulfide (rotten egg) odors that often occur under anaerobic or anoxic conditions.
The OdorXit® AQM – Air Quality Manager is available as a 30-day or a one-day odor elimination system that uses chlorine dioxide gas to oxidize the source of odors. The gas is dispersed through a contained packet, and will control mold, mildew, smells and nearly any kind of odors found in an industrial plant, a warehouse, or water treatment facility.
Kruger has introduced the new OdoWatch® 3.0 system. This is an enhancement to the OdoWatch real-time odor monitoring system which helps wastewater treatment plants stay on top of nuisance odors, preventing odors before they become a problem to the surrounding areas. New EPA approved AERMOD modeling follows the odor plume over complex terrain, allowing plants to track odors more efficiently. The system provides an alert when odors from a plant approach areas outside the predetermined parameters.
Kruger, a Veolia Water Solutions & Technologies company
With more than 600 reference sites, the Mónashell biofiltration system from Anua is a sustainable, low maintenance alternative to traditional odor control systems. The reuse of waste shells as media maintains a neutral pH, allowing for effective biological treatment of odorous sulfur compounds in wastewater and air streams without the use of chemicals or nutrient addition. The waste air stream is directed into recirculating water within the unit, allowing contact between selected micro-organisms and odorous compounds.
Vortex flow insert
The Vortex Flow Insert from IPEX USA helps eliminate odorous emissions and minimize corrosion in vertical sewer drops. With no moving parts and requiring virtually no maintenance, the inserts have delivered significant cost savings in monthly chemical feed, air-phase treatment and maintenance costs. The patented spiral flow design uses the wastewater's own flow energy to suppress the turbulence which releases noxious gases.