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    “I don't have time to make mistakes. That's why I work with MDG, they give me a product that works every time.”


    Lift Stations 101: Work Smarter, Not Harder

    December 6, 2018

    Lift stations are commonly used as a part of operations across a variety of different industries. While they are extremely useful, they can be difficult to maintain when not cared for properly. At Microbial Discovery Group (MDG), we have spent countless hours in the field with our partners, reviewing their customer’s maintenance challenges, and looking […]

    Lagoons 101: Identification and Long-Term Treatment Approach

    November 8, 2018

    Lagoons and ponds have been used for treating wastewater for over 3,000 years. Today there are over 8,000 wastewater treatment lagoons in operation within the United States. One appeal to using lagoons is that they generally require less energy than other treatment systems and have lower operation and maintenance costs. That being said, proper performance […]

    Sludge Tanks 101: Treating the Waste

    October 23, 2018

    Through the wastewater treatment process, there are components left over that are separated from the liquid phase. This collection of leftovers is referred to as sludge, which is then further treated within tanks. At Microbial Discovery Group (MDG), we have explored the process of treating sludge within sludge tanks and have designed our Biotifx® products […]

    Biotifx®: Innovating Wastewater Solutions

    September 18, 2018

    In a story as old as time, a new product comes to market, fails to make an impact, then fizzles out. Now, in talking with our customers, what we have learned is that some of the new “ground-breaking” solutions just end up causing more headaches than they’re worth. So, when the time came to expand […]

    The Key Drivers Behind MDG’s Current Expansion

    Mike King
    April 13, 2018

    I was recently asked the WHY behind our current expansion. When I started to break it down, there were 4 key drivers that went into the new MDG facility design: Capacity expansion Reliability via redundancy Production of 50+ strains The expanding Bacillus market Capacity expansion. This is the no-brainer for expanding. MDG was reaching 75% […]

    Odor Generation and Removal Within Wastewater Systems

    Dan Romanek
    July 10, 2017

    After experiencing the in-field affects that Biotifx™ products have on odor reduction; it is easy to understand that these products can reduce hydrogen sulfide and odor levels in a variety of industrial applications. The common question following that understanding is: how? Although Bacillus work in similar ways when it comes to pet odors, landfill odor, […]

    The Big Three Trends Causing Your Customers Pain

    May 23, 2017

    It might be best if I start out this month’s newsletter with a brief introduction. My name is Ardean Veldkamp, business development manager at Microbial Discovery Group (MDG). I joined MDG in 2013 and have been working in the biotech industry for over 25 years. In late 2015, MDG launched the Biotifx™ Platform to the […]

    Biotifx™ ULTRA Reduces Bio-Solids and Associated Costs in Municipal WWTP

    January 12, 2017

    SUMMARY A municipal wastewater treatment plant dosed with Biotifx™ ULTRA showed significant cost reduction and operational efficiency improvements, including a 50% reduction in bio-solids from sequencing batch reactors (SBR’s). Improvements in efficiency and cost included: reduction in odor control chemicals, belt press polymer, electricity, enzyme use, and sludge hauling. In just 3.5 months, the savings […]

    Market Snapshot: Small Municipal Wastewater

    December 12, 2016

    INTRODUCTION In the U.S., there are over 15,000 operational public wastewater treatment facilities. Of these, over 70% are considered ‘small systems’. EPA considers a wastewater system small if it serves a community with a population of 10,000 or fewer people and an average daily wastewater flow of less than 1M gallons per day (GPD). Because […]

    Biotifx Market Case Study: Industrial Wastewater

    November 15, 2016

    INTRODUCTION Industrial wastewater systems are found in the majority of manufacturing facilities that use water in their manufacturing process. This includes food and beverage, pulp and paper, chemical processing, petroleum, textile and steel industries. As a rule, industrial wastewater is relatively high strength and is subject to extreme characteristics.  Industries are being driven to explore […]

    Biotifx™ Market Case Study: Lagoons

    October 3, 2016

    INTRODUCTION Lagoons are a very common wastewater treatment design worldwide. Wastewater treatment facilities utilizing lagoons entirely or as part of a larger system can be found in municipalities, industry and agriculture.  Lagoons are an older method for wastewater treatment with the majority of lagoon systems currently in operation being installed 50-20 years ago. Typically, lagoons are thought of […]

    Microbial Discovery Group To Exhibit At AWT 2016

    June 22, 2016

    Microbial Discovery Group To Exhibit At AWT 2016       Microbial Discovery Group (MDG) will be exhibiting at the 2016 AWT Convention and Exposition in San Diego on September 7th-10th. This event is dedicated to bringing together professionals in the industrial water treatment industry and offers opportunities for education, product and partner exploration, and […]

    Newsletter – Denitrification and Floating Sludge

    November 25, 2015

    Denitrification and Floating Sludge What is Denitrification? Denitrification is the conversion of soluble nitrate to nitrogen gas in the nitrogen cycle. For denitrification to occur, three factors are needed: Presence of Nitrate Anoxic conditions (no free dissolved oxygen) A carbon source (soluble BOD) Floating Sludge Denitrification is useful and  desired in  certain anoxic zones designed […]

    Did You Know? – Naegleria fowleri


    Naegleria fowleri In the last decade the United States has seen 40 people who have been affected by Naegleria fowleri, commonly known as “brain-eating” amoeba. It is found in water sources, soil, and poorly maintained swimming pools. Infection typically occurs when the Naegleria fowleri is exposed to the nose. Drinking water does not lead to […]

    What is Your Biology Telling You? – Amoeba


    Amoeba Amoeba vary in size and move due to their “false feet”. Amoeba grow well on particulate organic material, are very hardy, and can survive in low DO environments. A bloom in amoebae can indicate an increase in particulate organic matter. Some species contain shells, which are called testate amoeba. Testate amoeba tend to occur […]


    October 30, 2015

    FRANKLIN, WI. – Microbial Discovery Group LLC (MDG) announced two recent additions to the company’s Biotifx™ wastewater team to meet the needs of their growing workforce and market expansion. Michael Kastel was named Wastewater Salesmen and Dan Romanek was appointed Technical Service Manager. Michael comes with experience within the field of sales, having spent past […]

    Newsletter – Understanding Wastewater Toxicity and Inhibition

    October 21, 2015

    Toxicity vs Inhibition It is important to realize that in wastewater processes, there are many genres of bacteria that are responsible for wastewater treatment. The different genres respond differently to system stresses depending on their sensitivity of the organisms and their enzyme systems.  For example, nitrobacter are extremely sensitive to changes in temperature, pH, and […]

    Did You Know? – Thank The Romans


    Thank the Romans Thousands of years ago, the Romans discovered yeast. They found that after leaving baker’s yeast (dough) out in heat, it was usable once sugar was added. Yeast grows and lives in liquids, such as wastewater. Today, most yeast is purchased in a dry form for storage purposes. Basically, you are using yeast […]

    What Is Your Biology Telling You? – Yeast


    Yeast Yeast are not commonly found in activated sludge, but may grow due to the following: Low pH in the system Phosphorus Deficiency Fermentative Conditions Yeast may also sometimes come in through the “front door” from industrial processes. As with all other organisms, ranking and abundance through microscopicevaluation is a critical step. Yeast can be […]

    Sludge Bulking Versus Filamentous Bulking

    September 28, 2015

    What is Bulking Sludge? By definition, a bulking sludge is a sludge that has a sludge volume index (SVI) of >150 mL/gram. In practical applications, the SVI for each plant (where problems of solids loss over the clarifier weirs) is site specific due to hydraulics and solids loading rates. In simple terms, if the sludge doesn’t […]

    What is Your Biology Telling You? – Zooglea


    Zooglea can cause foaming and bulking (poor settling) due to their thick polysaccharide (slime) capsules if present at a high enough abundance. Common control strategies include decreasing septicity, step feed, and lowering the F/M ratio. At low abundance, zooglea are not problematic as they are floc forming bacteria. At a high abundance, zooglea can cause foaming, bulking, and poor dewatering […]

    Did You Know? – Alligators in Sewers


    Yes, alligators have been found in sewers, but the actual factors and reported citing are subjective. The City of New York has the most known incident which occurred in 1935. Legend has it, that alligators were purchased as pets and flushed down the toilet when they got too big. Rather than fearing them, New Yorkers […]

    Newsletter – Wastewater Foaming Problems

    August 17, 2015

    Identifying Causes of Foam The cause of foaming should never be assumed. If there is foam in your plant, it is recommended to perform a microscopic evaluation of the foam and mixed liquor. As a general rule, if the organism is much more concentrated in the foam than the underlying MLSS, this can be associated with […]

    Did You Know – Hydrogen Sulfide

    August 16, 2015

    Hydrogen Sulfide Between 2001 and 2010 the Bureau of Health and Labor Statistics reported 60 deaths due to hydrogen sulfide inhalation. At low concentrations, hydrogen sulfide has a “rotten egg odor”. At higher concentrations (20-30ppm), it paralyzes the respiratory center of the brain and olfactory nerve and can’t be smelled. Hydrogen Sulfide may be found in sewers, […]

    What Is Your Biology Telling You? – Dispersed Growth

    August 15, 2015

    Dispersed Growth When there are a high amount of bacteria dispersed in the bulk liquid between the flocs, this can result in a cloudy supernatant and high effluent suspended solids. Causes Include: – High F/M Ratio – Rapid Temp. Change – Toxicity – Presence of Surfactants – Shock Load – Cation Imbalance Jenkins, R. D. […]

    Newsletter – Accelerate Growth, Achieve Success

    July 29, 2015

    Looking to Expand Your Business?  Join Our Webinar: Accelerate Growth, Achieve Success August 19th @ 10:00am or August 26th @ 2:00pm Analysis of Current Wastewater Market Explore WWT Market Growth Projections Discover ROI Opportunities How to Become a WWT Expert in One Day Start Growing Profits Today  90% of companies fail in wastewater due to lack […]

    Did You Know? – Rotifer Facts


    Rotifer Facts:  There are over 2200 species of rotifers. Rotifer stands for the Latin name of “wheel bearer”. Rotifers may be present in soil, water, and mosses. Largemouth species such as the Felina Rotifer are not commonly observed in activated sludge, but often found in lagoon systems, as they prey on algae. Almost all Rotifers […]

    What Is Your Biology Telling You? – Felina Rotifer


    Felina Rotifer This is a commonly found species of rotifers that grow in lagoon systems. These organisms prey on algae and have large mouths. They are rarely found in activated sludge processes.

    Newsletter – Wastewater Bioaugmentation

    March 25, 2015

    Advances in the Bioaugmentation Industry In recent years there has been a lot of science, research and successful case studies in which bioaugmentation, adding a culture of bacteria to the existing treatment process, has proven to be useful. We, at MDG, along with our distribution partners, continually look to help solve problems with the use of sound […]

    Did You Know? – Water Related Diseases

    March 19, 2015

    Wastewater Facts: 1 out of every 5 deaths of children in the world under the age of 5 are due to a water-related disease. Half of the hospital beds in the world are occupied by patients suffering from diseases associated with lack of access to safe drinking water, inadequate sanitation or poor hygiene.     […]

    What is Your Biology Telling You? – Hyphomicrobium

    March 10, 2015

    What is your biology telling you?   Hyphomicrobium can be observed at phase contrast at 1000x. It grows due to C1 compounds such as methanol and is capable of denitrification. It is the only organism that denitrifies that can be identified specifically at phase contrast. Just because hyphomicrobium is present does not mean that denitrification […]

    Newsletter – Five Questions To Ask A Potential Client

    February 13, 2015

    “Golly,” I say to myself as I’m driving down the highway, “that’s a huge factory. I wonder if our new wastewater programs would be of value to them?” But then I get a little anxious. ‘How to figure out their needs and how we might be able to help them?” This article describes the initial five […]

    Did You Know? – Sewer Surveillance

    February 12, 2015

    Sewer Surveillance To locate areas of sewer collection systems, a small camera is put into the pipe. Measurements from the manhole can be taken to determine where to dig. Radio transmission to the camera can record of the depth and location from the surface.Videos have been used to locate lost jewelry, other valuables, and animals that have […]

    What is your biology telling you? – Water Bear

    February 11, 2015

    Water Bear (tardigrade) These organisms are generally found in longer sludge ages and are very sensitive to ammonia, so their presence generally indicates that good nitrification or ammonia removal is occurring. Water bears have eight legs with four claws on each and short/ stout bodies in the shape of a cylinder. Water bears prey on […]

    Become an
    MDG Insider
    Gain exclusive access to fresh insights from MDG’s top microbial experts, learn relevant new industry trends, and hear about upcoming events.