Understanding Advanced Secondary Treatment

The specific characteristics of your land may require the installation of an advanced secondary treatment system to allow you to infiltrate the wastewater from your residence over a small area or discharge it into the environment. In this series of articles, our experts present the various advanced secondary treatment systems approved in Quebec.

Above all, it is essential to understand what an advanced secondary treatment system consists of. The advanced secondary treatment system as described in the provincial regulation Q.2. R-22 is a system designed to treat wastewater from a primary treatment system (e.g. septic tank) to meet effluent discharge standards. This type of treatment system is necessary only when the available infiltration space or the type of soil does not allow infiltration of water coming directly from the primary treatment system.

It is important to note that all advanced secondary treatment systems approved by the BNQ perform wastewater treatment that meets regulatory discharge standards. All of these systems require an annual inspection to ensure compliance with discharge standards.

In Quebec, the Bureau de normalisation du Québec (BNQ) has certified 5 advanced secondary treatment technologies for domestic wastewater. Among these is the Hydro-Kinetic system distributed by the Enviro-Step Technologie, a company based in Quebec. The Hydro-Kinetic was created by the American company Nowerco and has been certified by the BNQ since 2016.

Hydro-Kinetic biological treatment

The biological treatment of a Hydro-Kinetic is carried out in two stages, thanks to the bacteria naturally present in the wastewater. The sludge and the bacteria that constitute it are first stimulated by a prolonged aeration process using the system’s air pumps with settling and recirculation in order to promote sludge digestion without filter media and water purification. Then, an additional biofiltration is carried out thanks to the synthetic media present at the end of the treatment. The purified water is then redirected to a polishing field (60% smaller than a conventional purification field).

The Enviro-Step company produced a video clip clearly demonstrating how their technology works:

The 4 main advantages of a Hydro-Kinetic system

  • Few filter media and permanent and accessible media
  • No septic tank required (Primary treatment integrated into the system)
  • UV disinfection and phosphate removal treatment available
  • Possible savings thanks to the absence of emptying every 2 to 4 years

The 3 points to know before installing a Hydro-Kinetic

  • Available in concrete only in Quebec
  • A constant supply of electricity will be necessary for the supply of oxygen
  • Choose a certified contractor for a quality installation

A Hydro-Kinetic, what will it look like on my land?

As the final appearance of the secondary treatment system on your land could have an impact on your choice of treatment, The Hydro-Kinetic consists of two separate boxes with 5 access chimneys. Therefore, the final appearance of the Hydro-Kinetic on your land will be 5 concrete or PVC covers arranged in a linear fashion.

Note that it is essential that your treatment system be away from all motorized traffic and that no heavy weight should be affixed to it.

Source : enviro-step.ca


In summary, with its unique characteristics and the absence of the need for a septic tank, the Hydro-Kinetic is an excellent choice for advanced secondary treatment. Enviro-Step Technologies representatives are available to answer all your questions about the system and its implementation on your property. Visit https://enviro-step.ca/product/hydro-kinetic/ for more details.

In order to make an informed decision on the choice of your advanced secondary treatment system, we invite you to consult our articles on other treatment systems;

  1. Bionest – How does it work?
  2. Ecoflo – How does it work?
  3. System O)) – How does it work ?

Our Soluo experts are also available to answer your questions about all advanced secondary treatments. Contact us today to start your septic installation project.

About the Author

Étienne Gaudette

Chief Executive Officer (CEO)

Étienne Gaudette is the president of the Soluo Group, a company specializing in inspection, design and residential septic installation work serving the majority of regions of Quebec for more than 30 years. Thanks to his creative mind and his background in marketing consulting and as director of the group of experts in decentralized water management at Réseau Environnement, Étienne brings a unique vision to the on-site sanitation industry in Quebec in order to bring together the all industry players for the benefit of Quebecker. One goal: Change the world, one septic installation at a time.

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