2020 PSMA Conference PresentationThere are many applications for pumps in onsite wastewater treatment system design. This session will cover the basic hydraulic principles that must be used in the selection of pumps and controls. We will cover the fundamental details on the design, the component selection and the configuration of pumping systems that will deliver […]

2020 PSMA Conference PresentationMost of us were raised to eat three meals per day – breakfast, lunch, and supper. We eat until our appetite is satisfied (then eat a little more), we feel full of a couple of hours, and then we start to desire the next meal. How would our bodies respond if we […]

2020 PSMA Conference PresentationWhen we breathe approximately 78% of the air we inhale is nitrogen gas. With this much nitrogen around us, it is sometimes hard to believe that there is so much concern about nitrogen from onsite wastewater treatment systems. However, the nitrogen that we produce during wastewater treatment is in the form of […]

2020 PSMA Conference PresentationA biomat is a layer of partially decomposed organic waste often found on the bottom and sides of an absorption area’s trenches. This presentation will address issues associated with the development of biomats including how and why they form as well as how to recognize their presence during a septic system inspection. […]

2020 PSMA Conference PresentationHousehold water conservation devices do a good job of reducing water consumption. However if the waste load remains the same then the waste products become more concentrated. The result is often high strength wastewater. When the concentration of waste constituents (BOD, TSS, fats and oils) is greater than the typical values used […]

2020 PSMA Conference PresentationIn the past 10 years, nearly all parts of the U.S. have experienced extended periods of water scarcity. Wastewater reuse becomes a common discussion topic during droughts and this water is certainly an underutilized resource. On the residential level, there are people who want to improve their water-use efficiency by using greywater […]

2020 PSMA Conference PresentationWe depend on the soil to provide wastewater treatment. When working with shallow soils, we need to use wastewater application methods that can take full advantage of the limited resource. Subsurface drip dispersal systems ensure that the whole distribution area receives uniform doses and can maintain aerobic conditions within the soil. However, […]

2020 PSMA Conference PresentationWhen a property owner isn’t satisfied with the results of a septic system inspection, they may seek a second opinion on the conclusions reached in an inspection report. This session will review common scenarios that prompt the request for a second opinion. Attendees will learn how to respond professionally when dealing with […]

2019 PSMA Conference PresentationThis presentation will provide an overview of a new research project at the UMN. When water is softened to remove hardness, salt is used to regenerate the softener releasing chloride to septic systems and wastewater treatment plants (WWTPs). Monitoring to date has shown numerous WWTPs with discharge concentrations greater than limits for […]

2019 PSMA Conference PresentationThis session will focus on the newest onsite wastewater system control panel design, operation, management, data collection and remote monitoring. We will discuss using controls to manage flow equalization, time dosing, demand dosing and recirculation and how to integrate HMI’s, cellular units, VFD’s and radio communications where applicable. Sample panels will be […]