Conference Agenda

Wastewater treatment plants are facing a challenging future, trying to meet challenges including odor, reducing greenhouse gas emissions, potential PFAS regulations, and rising capital and operating cost. It is possible to design and operate a facility that meets these challenges by following some simple rules for facility design including:
• Provide significant reduction in biosolids volume.
• Produce energy from the biosolids process to provide surplus energy to run the facility.
• Reduce offensive odors during processing and recycling of the treated solids.
• Allow for flexibility in the treated solids for recycling and reuse.
Thermal Hydrolysis systems are achieving all of these objectives at facilities across North America. The design and results of several facilities will be reviewed and presented.

The inDENSE gravitational sludge intensification technology offering from WWW offers several biological advantages to achieving process control, improved SVI’s, clarifier capacity, enhanced BNR, and granular sludge intensification. This technology is extremely retrofittable to almost any secondary process and is viewed as the least cost per gallon of any sludge intensification offering in the market.

Anaergia’s Omnivore High solids digestion system is comprised of (1) Anaergia high solids OmniMix mixers (with service box) and (2) Anaergia sludge screw thickener, to remove excess water from digester, increase organics loading, and improve VSR. As retrofit, Omnivore triples digester capacity within existing volume, or as new construction, requires 1/3 the footprint and significantly reduces CAPEX.

Traditional Anaerobic Digestion processes can create undesirable challenges at WWRFs. Nitrogen recycle from dewatering can have a significant impact on the overall loading to the facility and Phosphorus released under anaerobic conditions can negatively impact dewatering performance. These problems increase chemical and energy costs and create many operational challenges.
By adding an Acid Phase Digester before and an Aerobic Reactor after the Anaerobic Digester, some significant improvements in plant, digester and dewatering performance can be realized. These proven processes are well- established and employed (often independently) at several facilities but, when they are used in concert with the addition of a recycle loop, the solids process effectively becomes sidestream nutrient removal. Managing these nutrients in solids processes that are optimized for the desired biology has other side-effects including decreased H2S production, reduced odor and more robust digester performance.

The V-Bank System for carbon vessels have been around a long time, but airflows in projects are rising as projects become more ambitious. The V-Bank system is the most efficient system for maximizing airflows, footprint and ease of change out.