With municipal budgets tightening solutions to reduce energy, operation, disposal and pollution costs at wastewater treatment plants are paramount. The ozone / advanced oxidation wastewater treatment method is gaining popularity across the globe as an effective and efficient alternative to tradition treatment technology. Ozone applications for municipal wastewater include the following:
Municipal Wastewater
Municipal Wastewater
Wastewater Effluent Disinfection & Oxidation
Disinfection is the primary mechanism for the destruction of disease causing pathogens in wastewater. When ozone decomposes in wastewater, the free radicals that are formed have a powerful oxidizing capacity.
Ozone dosing at the point of discharge for municipal wastewater has proved effective in the destruction of pathogens & viruses; as well as the removal of endocrine disrupting chemicals (EDC’s), pharmaceuticals, personal care products (PPCP’s) and constituents of emerging concern.
Ozone Treatment of Wastewater Sludge
Ozone effectively stabilizes and reduces wastewater sludge in treatment plants, lowering costly landfill disposal. Unlike hydrogen peroxide, ozone penetrates cell walls, lysing bacteria, which are then broken down further, reducing sludge by 50 – 60%. Ozonation of return sludge decreases filamentous bacteria, improving sludge settling and overall plant performance. Connecting a bioreactor to the sludge line enhances sludge quality and biogas production by removing harmful filamentous bacteria.
Additional benefits achieved by ozonation include foam reduction, oxidation of odors and improved clarity.
COD / BOD Reduction
Ozone is a highly effective treatment for reducing Chemical Oxygen Demand (COD) and Biological Oxygen Demand (BOD) in municipal wastewater because of its strong oxidative power. When applied, ozone quickly breaks down a wide range of organic and inorganic pollutants, converting them into simpler, less harmful substances. This rapid oxidation process efficiently lowers the organic load, making ozone particularly useful for treating complex or non-biodegradable compounds that are difficult to remove with traditional methods.
Additionally, ozone treatment offers important environmental and operational benefits. It decomposes back into oxygen, leaving no harmful residues, which improves water quality and reduces environmental impact. Ozone also reduces sludge production and can be generated on-site, eliminating the need for hazardous chemical storage. These advantages make ozone a sustainable and efficient option for lowering BOD and COD in municipal wastewater treatment plants.
Advanced Oxidation Process (AOP)
Basic AOP processes where ozone is applied simultaneously with ultra-violet radiation (UV) or hydrogen peroxide, produce an aggressive hydroxyl radical that enhances the oxidation rate of contaminants.
AOP’s attack nearly all organic complexes and have a high potential to degrade contaminants that are not affected by ozone or sodium hypochlorite. Hydroxyl radicals have shown to effectively oxidize pharmaceuticals, personal care products and 1,4-dioxane.
Pureflow Ozone Division, in conjunction with our partners, possess the ability to pilot, design and manufacture state-of-the-art advanced oxidation process for the municipal wastewater marketplace.
