Tag Archives: wastewater treatment

Another Look at Anaerobic Digestion

Anaerobic digestion is described as a collection of processes by which microorganisms break down biodegradable material in the absence of oxygen. The process is used for industrial or domestic purposes to manage waste and/or to produce fuels. Much of the … Continue reading

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Environmental Concerns of Landfilling Biosolids

Wastewater treatment facilities produce biosolids as a final by-product of the treatment process. The term “biosolids” was crafted by the U.S. Environmental Protection Agency (EPA) to promote the idea of recycling sewage sludge. Biosolids are really just treated human sewage. … Continue reading

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Facultative Lagoons

Like most natural environments, conditions inside facultative lagoons are always changing. Lagoons experience cycles due to variations in the weather, composition of the wastewater and other factors. In general, the wastewater in facultative lagoons naturally settles into three fairly distinct … Continue reading

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Biogas Used for Electric Power

In an earlier blog, I talked about anaerobic digestion––the degradation of organic material by anaerobic bacteria. The anaerobic digestion process is not just used in the treatment of human wastewater. It can be used with any type of manure or … Continue reading

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Fouling Control of Membrane Bioreactors

Membrane bioreactors (MBR) are no longer novel or unusual wastewater secondary treatment techniques and have become widely used for municipal and industrial wastewater treatment plants up to an 80,000-population equivalent. MBR systems combine suspended growth biological reactors with microfiltration or … Continue reading

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Pressure Sewer Systems

A pressure sewer system is a holding tank that detains the wastewater flow from a home or group of homes until a set point is reached and a pump in the tank grinds and then pumps the wastewater under pressure … Continue reading

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The Cost of Replacing It All

Often, in a collection class or an asset management discussion, we will converse about what it would cost to replace the whole enchilada––lines, manholes, lift stations and the plant to treat the wastewater. The following article gives us an idea … Continue reading

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