Municipal

Oxygen demand serves as the main benchmark for measuring organic pollution in effluent. EnviZyme offers products and technical expertise to target a wide range of organics for:

• Compliance with tightening discharge limits and elimination of permit violations
• Enhanced plant stability for less frequent upsets and faster recovery
• Proper floc formation and improved settleability
• Greater capacity to receive highly complex waste streams
• Improved performance in cold or variable weather

Fats, oils, and grease (FOG) include those generated by animal fats and vegetable oils, as well as materials of mineral origin, like petroleum and hydrocarbon. EnviZyme products provide the right microorganisms to:

• Degrade grease caps and high levels of FOG
• Maintain free-flowing collection systems without buildup, blockages, or sewer overflows
• Minimize sensor fouling, foaming, and filamentous bulking
• Decrease operating time and costs from skimming
• Safeguard dewatering, which can become compromised if FOG becomes entrained in the floc

Foul odors have a direct impact on local communities and can even be subjected to regulation depending on geography. In general, the source of nuisance odors is usually anaerobic degradation, organic material decomposition, and/or FOG issues. EnviZyme products:

• Target odors biologically by metabolizing the odor molecules themselves, while also degrading the source of malodors
• Are effective against sulfur-based odors like hydrogen sulfide and mercaptans, which are detectable at extremely low concentrations
• Are effective against volatile fatty acids (valeric, butyric, and acetic acids)
• Provide continuous, long-term odor control and prevention

Sludge treatment can account for 50% of a plant’s operating budget. As costs continue to increase, urban areas offer fewer disposal options, and stricter regulations necessitate higher standards of treatment. EnviZyme offers both enzymatic and biological solutions to:

• Improve dewatering performance for all plant sizes and sludge types
• Reduce volume for lower handling or disposal costs
• Lengthen hydraulic retention time and increase overall performance
• Recover capacity of lagoons and defer costly dredging
• Decrease costs associated with polymers and energy input

Removal of ammonia, nitrites, and nitrates is an important and difficult process to maintain. Sources of nitrification problems include environmental factors, toxicity, solids washout, and loading variation, but EnviZyme can help. We offer solutions to:

• Make the nitrification and denitrification processes more robust, enabling plants to withstand higher loading
• Shorten the recovery time after process upsets
• Reduce the impact of shock loads on effluent quality
• Eliminate ammonia-related permit violations, limits for which are becoming more stringent
• Increase the lifespan of critical pieces of infrastructure by preventing ammonia-related corrosion

A well-developed microbial community can take weeks or months to become established with only native microorganisms, and to operate as efficiently as possible, it is important to have the right microorganisms. EnviZyme offers products to:

• Allow the start-up or upset recovery period to happen faster and with greater predictability
• Jumpstart or recover the ability to remove organics within the designed hydraulic retention time
• Foster formation of good floc that settle well
• Eliminate reliance on seed sludge, which can require an adaptation period or contain filamentous organisms

Treatment plants require a delicate balance of nutrients in order to support a healthy biomass and achieve optimal efficiency. EnviZyme offers products that provide essential micronutrients to supplement the basic metabolic needs of wastewater biology and ensure an optimized nutrient (C:N:P) ratio.

• Stabilizes biological populations and nutrient-deficient conditions
• Mitigates filamentous bulking associated with nutrient deficiencies
• Reduces plant sensitivity and aids in smooth start-up
• Increases and sustains the biomass bacterial activity
• Supports COD/BOD removal

Municipalities often leverage anaerobic treatment of sludge. EnviZyme offers both enzymatic and microbial solutions and expertise to maximize energy recovery and realize benefits like:

• Generation of even more biogas amidst rising demand for renewable fuels and bioenergy
• Minimization of sludge production with increased dewaterability
• Lower downstream sludge disposal costs
• Reduced energy requirements, particularly for aeration
• The opportunity to reduce greenhouse gas emission towards net-zero

Foaming is a multifaceted problem with several potential triggers—like overabundance of filaments, surfactants, or EPS—and consequences. EnviZyme offers the expertise and products to correct foaming as efficiently as possible to:

• Maintain proper floc formation and improve settleability
• Keep parameters like TSS and BOD in check, along with optimum solids inventory
• Safeguard the public from wind disbursement of pathogens
• Protect oxygen compressors from foam entry, which can be a fire risk
• Minimize impact on costs from skimming, hauling, and synthetic defoamers
• Avoid additional housekeeping and malodor

Sewers, lift or pump stations, and other collection system components are crucial to efficient transportation of wastewater. Products from EnviZyme improve collection system performance and reliability by:

• Seeding flows with microorganisms to improve conveyance and speed up treatment
• Preventing emergency blockages and sewer overflows
• Digesting grease to minimize buildup, formation of caps, and FOG pushed downstream
• Decreasing the frequency of clean outs and lowering disposal costs
• Mitigating malodors associated with organic waste and improving the lives of nearby residents
• Reducing fouling of pumps and sensors in pump stations
• Encasing dissolvable blocks in a mesh bag that can be tied and immersed in the flow