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Up to 85% Solids Destruction Achieved Using BIO ENERGIZER®

By Heather Jennings, PE

The wastewater treatment facility operators at a city in Missouri wanted better digester performance. They needed a better settling sludge and a higher volume of decants, as well as more room to waste sludge within their existing digesters. The options to dispose of the digested sludge were becoming more and more scarce.

After trialing 3 products, they found BIO ENERGIZER® reduced their solids the best. Significant improvement in settling as well as a significant reduction in the total solids occurred in their digesters. They have achieved up to 85% volatile solids destruction using BIO ENERGIZER®. Another benefit that the City has gained is increased decant volumes. The City has doubled the number of decants by using BIO ENERGIZER® compared with other products previously used. This all results in lower hauling and handling costs. All it takes is a peristaltic pump and the product to get you similar savings! [Read more…]

Anaerobic Digester Saves 42% In Sludge Hauling

by Heather Jennings, PE

The case summary described below is an example of how our Bio Energizer® product helped reduce overall solids handling and improved supernatant clarity. It really doesn’t take much Bio Energizer® to reduce solids within your system when the microbial community is stimulated or “kicked into gear” to do their job. Typically, in anaerobic digestion we dose between 1–2 gallons/MGD. This system had 250,000 gpd and, after an initial dose of 2 gallons, they added 7 oz/day of the product for 60 days in their primary digester. The results? The volume of each decant was double the normal volume, and they had half the solids loading with an average of 0.21% solids. Continuously using the product over two years yielded a net savings of $1,024/ month! [Read more…]

Use of Biostimulants and Buffers for Upset Recovery in Paper Mill Wastewater Systems

By Heather Jennings, PE

Industrial pulp and paper wastewater is considered one of the more challenging waters to treat using biological methods, which depend on microbial activity to effectively remediate the wastewater.

Wastewater treatment systems are often influenced/impacted by increased hydraulic and/or COD (chemical oxygen demand) loading as mills add new chemicals or otherwise modify mill operations. These events oftentimes inhibit the wastewater microbial activity, causing “upsets” and, potentially, discharge-limit violations. However, providing the necessary biostimulants and buffers to the microbial system—as we describe in this case study from a paper mill in China—can significantly improve system-upset recovery time and overall operational stability. Continue Reading

The Water Break Podcast, Episode 7: Anaerobic Digesters

“Where we bridge the gap between water plant operators and engineers”

In Episode 7, Heather Jennings discusses Wastewater Anaerobic Digesters with Kay Curtin. Kay is an Advanced Wastewater Operator in Wisconsin and a Level A Wastewater Operator in Minnesota, with 45+ years’ experience in wastewater. She is currently working with the Wisconsin Rural Water Association as a trainer/technician for Western Wisconsin and has her own consulting business, Curtin Consulting, LLC. Topics covered in the podcast include anaerobic digester pros and cons, bacteria used, nutritional requirements, key operating parameters, main causes of failures, and typical operating issues.

Kay Curtin

Bio and contact info at Wisconsin Rural Water Association

Podcast Reference from Wanda’s Water Tidbit: The World’s Most Beautiful Sewage Plant

The Water Break Podcast, Episode 6: Microbial Lab Operations

“Where we bridge the gap between water plant operators and engineers”

In Episode 6, Heather Jennings discusses Wastewater Laboratory Operations with Toni Glymph-Martin. Toni is a Wastewater Microbiologist and Certified Operator, B-Level, with 40+ years’ experience. She is the author of two books: A Wastewater Microbiology Laboratory Manual for Operators and Wastewater Microbiology: A Handbook for Operators. In today’s podcast, Toni talks about how and when to use a microscope to better manage wastewater treatment.

Toni Glymph-Martin

Toni’s Website: https://www.wwmicrosolutions.com/

Toni’s textbooks:

More from Toni Glymph-Martin (video): The Wastewater Treatment Plant Microbiological Zoo

Toni Modeling Her Water Bear (Tardigrade) Wear

Podcast Reference from Wanda’s Water Tidbit

The Water Break Podcast, Episode #5: Lagoon Aeration

“Where we bridge the gap between water plant operators and engineers”

In this podcast episode, host Heather Jennings, PE, interviews Patrick Hill, a wastewater treatment lagoon specialist at Triplepoint Environmental. Patrick has presented on lagoon topics at conferences throughout the U.S. and at WEFTEC. He was named one of Water and Waste Digest’s young water professionals to watch in 2015. In this podcast, Heather and Patrick discuss lagoons, their technical considerations, and aeration options. And at the end of the podcast, in Wanda’s Water Tidbits, Heather describes an Australian effort to use an electrochemical method to clean up heavily polluted industrial wastewater.

Triplepoint Environmental Website: lagoons.com

REFERENCED IN THE PODCAST

New Atlas article: Zaps of electricity clean up wastewater from biofuel production

Algal Research article: Electrochemical oxidation of nitrogen-rich post-hydrothermal liquefaction wastewater

University of Sydney article: Engineers use electricity to clean up toxic water

Bugs Bunny and Daffy Duck animation: Algae Season/Duckweed Season

The Water Break Podcast, Episode #4: Activated Sludge System Operational Issues

“Where we bridge the gap between water plant operators and engineers”

In this podcast episode, host Heather Jennings, PE, interviews two highly experienced experts regarding operational issues related to activated-sludge wastewater systems:

  • Jim Huchel is the Water Reclamation Plant Manager for the City of Flagstaff, Ariz.
  • Dave Axton is the owner of Water Resources Management, Inc., and he is also a Probiotic Solutions® sales representative

Jim and Dave have over 80 years of combined experience in water plant operations.

REFERENCED IN THE PODCAST

Sulabh International Museum of Toilets

 ADDITIONAL RESOURCES

Contact Dave Axton at Water Resources Management (WRM)

WRM operates approximately 50 wastewater treatment plants and public water supplies. It has a full-scale wastewater lab where testing is performed for about 150 treatment plants. WRM also performs sludge profiles on various lagoon treatment systems, and it troubleshoots Industrial as well as domestic wastewater treatment plants. WRM also has a software division that designs and distributes water and wastewater management software for public and private utilities throughout the U.S.

The Water Break Podcast, Episode #3: Troubleshooting Water and Wastewater Systems

“Where we bridge the gap between water plant operators and engineers”

In this podcast episode, host Heather Jennings, PE, interviews Fred Black and Ray Ramos of the New Mexico Rural Water Association on the topic of Troubleshooting Water and Wastewater Systems. Fred and Ray troubleshoot water and wastewater systems in the state of New Mexico, and together they have more than 50 years of experience in the water/wastewater industry.

Referenced in the Podcast
New Mexico Rural Water Association: https://nmrwa.org/

How to Row a Boat: https://www.youtube.com/watch?v=uHn94aJPSeo

How NOT to Row a Boat: https://youtu.be/N1xQ9Dc7Tm8

Journal of Consumer Psychology: Taking a Shine to it: How the preference for glossy stems from an innate need for water.

Jemaine Clement—“Shiny” (from Moana) (Official Video)

Wastewater Treatment: A Delicate Balance

By Jared Alder, MS

The treatment of wastewater is a delicate balance of chemical, biological, and mechanical processes. Treatment operators need to find a happy medium to provide high-quality treatment, while staying within budgets and all the while ensuring they meet environmental compliance. Operators are expected to deal with a constantly varying treatment system, such as from climate changes, human usage patterns, and more. With all of the possible changes, budget constraints, and regulator requirements, finding a balance can be quite challenging.

To keep effluent within the parameters of their facility permits, operators must constantly evaluate the chemical makeup of their treatment systems and determine the precise amounts of chemicals that should be applied to get a high-quality discharge. [Read more…]

Nitrification and Denitrification in Wastewater Activated Sludge

By Heather Jennings, PE

The great teetertotter of wastewater is the nitrification and denitrification cycle in activated sludge wastewater systems. It takes both to convert ammonia to nitrogen gas! Both processes feed off of and support each other but, in some ways, they have competing needs.

Nitrification consists of ripping off the hydrogen in ammonia and adding oxygen to make nitrates and nitritesthis is accomplished by bacteria that we call nitrifiers. You might be already familiar with some of these nitrifiers, such as Nitrosomonas, Nitrobacter, etc. I, personally, call nitrifiers the “divas” of wastewater. They can only tolerate specific conditions to really thrivesuch as a pH range of 6.58.0. They also require 7.1 lb of alkalinity for every 1 lb of ammonia that is oxidized, and they prefer temperatures at 77°F with DOs (dissolved oxygen levels) above 2mg/L. Retention times need to be longer than five hours, and the F:M (food to microorganism) ratios must ideally be less than 0.25. Basically, nitrifiers are screaming for their lattes to be a specific temperature and everything just right or they will refuse to work! Sadly, we can’t fire them. We have to learn how to meet their needs to get any nitrification done.   [Read more…]

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