Sewage Treatment Terminology Explained A-Z Part 4; F to K; Ferric Sulphate to Kjeldahl Nitrogen

Introduction

Welcome to our education blog explaining terms used in sewage treatment from A-Z. Part 4 is from Ferric Sulphate to Kjeldhal Nitrogen.

In Part 4 of our A-Z guide, we cover sewage treatment terms starting with F to K. These terms are integral to understanding sewage and wastewater treatment processes, especially in relation to package sewage treatment systems.

22. Ferric Sulphate (FeSO₄):

• A chemical commonly dosed into sewage treatment plants to reduce Phosphorus (P) levels in wastewater.

23. Final Effluent:

• The treated effluent discharged from a sewage treatment plant after completing all treatment stages.

24. Final Settlement Tank:

• See Humus Tank.

• A tank where settleable solids are separated from effluent after the aerobic (Biozone) stage of treatment.

25. Foul Sewage:

• Untreated sewage, often referring to raw wastewater entering a treatment system.

26. Humus Tank:

• A tank used to separate humus (settleable solids) from the effluent.

• Commonly referred to as:

  • Secondary Settlement Tank.

  • Final Settlement Tank.

  • Clarifier.

27.Influent:

• The raw sewage or wastewater entering a treatment plant.

• Sometimes referred to as incoming effluent.

28. Kjeldahl Nitrogen:

• The total of organic nitrogen and ammonia nitrogen (NH₃/NH₄) in wastewater.

• A key parameter in assessing nitrogen pollution and treatment efficiency.

Additional Resources

For more detailed explanations of sewage treatment parameters, visit the BMS Education Blog/Customer Questions section, which covers:

• BOD (Biochemical Oxygen Demand)

• SS (Suspended Solids)

• NH₄ (Ammonia)

• N (Total Nitrogen)

• COD (Chemical Oxygen Demand)

• P (Phosphorus)

Coming Up Next

The next article will explore terms starting with N to P, including Raw Sewage and Sewage Treatment Plant/System.

Questions?

If you have any questions of would like information on package wastewater treatment products, feel free to contact us.

About BMS

BMS is a quality manufacturer of package products for wastewater and stormwater treatment:

• Established: 1986

• Global Reach: Exported to over 50 countries.

• Family Business: A third-generation company with deep expertise.

BMS Product Range

BMS provides a wide array of surface water and wastewater treatment products, including:

• Attenuation systems

• Interceptors

• Holding tanks (chemical-resistant options available)

• Hydrobrakes

• Rainwater harvesting tanks

• Vortex silt/oil/debris separators

• Fully fitted pumping stations

• Recyclone: A plug & play vehicle wash water recycling system

View the full product catalogue here

Additional Services by BMS

• Free Design Service: For sewage treatment, pump stations, and surface water management.

• Operation and Maintenance: Full services for existing installations, including repair, advice, and testing.

• Free CPD Presentations: Available for sewage treatment and surface water management, delivered at your location.

We would be delighted to discuss any requirements you might have, and we are available to meet you at your convenience.  Contact us today.

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