WE&T’s Operator Essentials column presents easily accessible and digestible fundamental information. It is intended to share “what every operator should know” about each topic covered. The column is arranged as a grid of knowledge, principles, and practical considerations — each successive column provides more detailed information.

WEF Members get access to all installments of Operator Essentials back to 2010. These are sorted into the categories at the bottom of the page.

The following seven sample installments are presented open-access to show the what Operator Essentials has to offer.

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Planning

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Public Outreach – September 2013

Biological respiration – August 2014

Flood disaster resiliency – September 2014

Wastewater process modeling - March 2017

Industrial pretreatment - August 2017

Infrastructure renewal - September 2017

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Collection Systems & Pretreatment

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Confined spaces – May 2011

Sanitary sewer overflows – May 2013

Fats, oils, and grease – October 2013

Pumps and pumping stations – August 2015

Collection systems odor corrosion control – March 2016

Valves and flow control – November 2016

Leachate – December 2015

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Preliminary Treatment

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Preliminary treatment – August 2016

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Solids Separation

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Chemically enhanced primary treatment – March 2013

Filtration – June 2014

Clarification – October 2016

Membrane applications in wastewater – February 2016

Membranes – September 2016

Filtration – May 2017

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Biological Treatment

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Membrane bioreactors – January 2011

Nitrification – October 2012

Denitrification – April 2013

Secondary clarification – June 2013

Biological nutrient removal – October 2014

Lagoons – February 2017

Activated sludge – June 2011

Activated sludge – April 2016

Trickling filters – August 2013

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Disinfection

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Sodium hypochlorite – March 2011

Ultraviolet disinfection – March 2014

Chlorine reactions with nitrogen – February 2015

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Solids Treatment & Disposal

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Polymers – February 2011

Anaerobic digestion – December 2012

Dissolved air flotation thickening – January 2014

Solid bowl centrifuge dewatering – April 2014

Biosolids land application – December 2014

Septage – June 2015

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Resource Recovery

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Reuse – August 2011

Biological phosphorus removal – July 2013

Shortcut nitrogen removal – May 2016

Struvite – November 2015

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Automation, Instrumentation & Process Control

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Nitrogen sensors – January 2015

Process automation systems – March 2015

Phosphorus analyzers – April 2015

Piping and instrumentation diagrams – October 2015

Temperature – November 2011

Pressure – December 2011

Lab practices – September 2011

Dissolved oxygen probes – November 2012

Oxidation–reduction potential – January 2013

Standard operating procedures – February 2013

Alkalinity – July 2015

Asset management – September 2015

Oxygen uptake – December 2016

Respirometery – January 2017

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