Biosolids Treatment Facility Installs Compost Turning Equipment


Compost Turning Equipment – Project Scope

Mid Valley Manufacturing installed compost turning equipment by RotoKing™ to help create a state-of-the-art world-class biosolids treatment facility in Ladysmith, British Columbia, Canada. The compost turning equipment would not only speed up the composting process but also eliminate the putrid stench, thus helping the city of Ladysmith avoid having to move the facility.

In January 2017, Vancouver Island’s Ladysmith mayor Aaron Stone was actively looking to find a way to stop the smell of human feces coming from the local biosolids waste treatment site. The stench had become known as the “Ladysmith Linger” and the city was concerned they might have to find a new location for the biosolids treatment facility.

Earlier, in 2016, Ladysmith had introduced a secondary sewage treatment facility, which effectively doubled the bio-solids being transported to their public works yard to be composted. Annually, as much as 2,500 tonnes of biosolids (human waste) were being stored outside. The piles of foul sewage sludge were creating a major ongoing odor problem for local residents.

Installation of RotoKing™ Compost Turner

In dairy farming, RotoKing™ compost turning equipment is used for dairy cow waste management. RotoKing™ compost turners offer a highly efficient composting system for quickly converting dairy waste into usable compost material.

The plans for the biosolids waste treatment facility in Ladysmith involved the installation of the RotoKing™ Model #2050 by Mid Valley Manufacturing.

Mid Valley Manufacturing installed the high-efficiency compost turner in an airtight facility. The RotoKing™ compost turner blends the biosolids with wood chips, which are then aerated from underneath using a series of pipes. The composting is mixed at temperatures hot enough to kill off all pathogens. The process turns the sewage sludge into high-quality topsoil and any resulting odors are passed through a ventilation and air conditioning HVAC system, which is vented out through a biofilter.


  • The composting process is now a lot faster thanks to the RotoKing™ compost turner
  • The composting is done in an airtight facility
  • The foul smell has been eliminated
  • Ladysmith won’t have to move the biosolids waste treatment facility to a new site
  • Ladysmith is now producing high-quality topsoil that can be utilized throughout the city

This world-class biosolids treatment facility has virtually eliminated the smell of human feces coming from the Ladysmith biosolids waste site. Ladysmith is now breathing a lot easier. Visit this Ladysmith website page to read more about the new biosolids treatment facility.

Biosolids FAQs

What are biosolids?

Wastewater treatment processes remove food and waste solids from raw sewage to create organic matter and nutrient-rich fertilizer known as biosolids.

Are biosolids safe?

Following years of study, the United States Environmental Protection Agency advocates that biosolids are safe to use for fertilizing soil in order to grow food for human consumption.

Are biosolids organic?

Yes, biosolids are made up of organic matter and essential plant nutrients.

Do biosolids smell?

Once processed, organic nutrient-rich biosolids tend to have a slight musty odor very similar damp soil.

What are biosolids used for?

Biosolids are used as fertilizer to improve soil conditions for gardens, lawns, and farming crops for human consumption.

For more information on the RotoKing™ compost turning equipment, or about Mid Valley Manufacturing dairy cattle barn services, please call us toll-free at 1-888-854-4568, send us an email, or contact us online.