Rocky coastal properties present system challenges
Problem: Given local setback rules and challenging soil limitations on the rocky coast of Maine, many homeowners found themselves with overboard discharge units for the disposal of their wastewater.
Solution: Fuji Clean USA systems have been a primary mechanism used in replacing these systems, and many of these properties are now able to adequately treat wastewater when they previously had no options. The Fuji Clean systems require a small footprint, no advanced septic tank requirement and reduced drainfield size due to the quality of effluent.
Result: According to Fuji Clean USA, the treatment systems are energy-efficient, environmentally friendly and have proven successful on coastal Maine properties. 207/406-2927; www.fujicleanusa.com.
New system allows for sale of property
Problem: The existing system at a residence in the town of Freedom, New Hampshire, was declared failed during a home inspection and in need of repair to sell the home. Installed more than 30 years ago, the system had a steel tank undersized for the current regulations for a three-bedroom home. A stream runs through the property, near the home, and wetlands are on the other side of road, making it difficult to meet the township’s setback requirements.
Solution: A variance was needed from the town to submit the redesign to the state, allowing for minimum setbacks from the tank and leachfield. In addition to the setback variances, the limited area called for use of an EnviroFin system, a combined treatment and dispersal system from Presby Environmental. The steel tank was pumped and filled, and an EnviroFin system was installed.
Result: The EnviroFin system was successfully installed, allowing the sale to be completed. 800/473-5298; www.presbyeco.com.
Trickling filters installed at campgrounds with site limitations
Problem: In the popular lake district of Whiteshell Provincial Park, eastern Manitoba, White Lake and Brereton Lake campgrounds required sewage treatment due to high water table and bedrock limitations.
Solution: The low-maintenance process designed by J.R. Cousins Consultants included septic tanks, Waterloo Biofilter absorbent trickle filters and UV disinfection. Phosphorus removal was required at Brereton for discharge into the surrounding high water table. To service the design flow of 27,738 gpd, or equivalence of 50 to 60 houses, pods of EC-P electrodes were clustered inside septic tanks. Phosphorus is removed as iron compounds in the aerobic trickling filters after the EC-P.
Result: In the first two years at Bereton Campground, effluent averaged cBOD less than 4 mg/L, TSS less than 4 mg/L, TP of 1.2 mg/L, and geometric mean E. coli less than 17 cfu/100 mL. Control panel electrical problems caused TP removal variations, with TP removal averaging greater than 88 percent compared to White Lake. White Lake Campground averaged cBOD of less than 3.8 mg/L, TSS less than 2.3 mg/L, TP of 10.4 mg/L, and E. coli less than 3.1 cfu/100 mL. 519/856-0757; www.waterloo-biofilter.com.