Discharges from Eden Valley were causing odor problems with the Berwick wastewater treatment plant. Effluent from the Eden Valley overwhelmed the sewer treatment system, causing bad odors throughout the northeast quadrant of berwick. Upgrades were made to the system to ensure there would be no repeat of the problem.
When Eden Valley purchased the former Larsen facility that same year, Berwick partnered with the provincial and federal governments and Eden Valley to upgrade the facility again, this time to the tune of $2 million. The project was pursued to improve efficiency at the treatment facility and to avoid a repeat of the odor issues.
One of the improvements made was teh addition of an ozone injection system, the first of its kind installed in Nova Scotia. It is designed to destroy organic compounds and suspended solids before water is pumped into the Cornwallis River.
Ozone odor control has been used extensively in the US and Europe at a variety of facilities including wastewater treatment plants. This has been done by mixing ozone with the off gas from the wastewater treatment plant using a wet scrubber or treating the water to prevent the smell in the first place.