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Gullywasher - Model 275 Upflow -Biofilter
Our 275 Upflow Biofilter is a low-cost, highly effective stormwater filtration system that integrates with both downspouts and pump n` treats process systems. Flow rates for our 275 BioUP biofilters reach up to 65 GPM with a sweet operating spot for maximum efficiency at 30 GPM.
The heart of our treatment process lies with our gravity-based, dual-stage, upflow Biofilters. They use organic, carbon-negative media to strip out the stormwater contaminants. The biochar media strips the total/dissolved metals, BOD, COD, and a limited amount of nutrients from the stormwater.
The first stage is a container consisting of a filter bag made of an industrial grade 10 oz geotextile. There is a secondary filter screen located at the 1st stage filter container outlet – designed to trap any suspended solids that could potentially bypass the main filter bag.
In the second stage of treatment, the stormwater is redistributed evenly across the second stage and flows upwards through the biochar media. This media treats the stormwater through adsorption, ion exchange, complexing, biological, and chelating in an upflow process. The biochar media strips out the total/dissolved metals, BOD, COD, and a limited amount of nutrients from the stormwater.
Gullywasher`s 275 Upflow Biofilter consists of 2 stacked 275 gallon totes maximizing the use of space. The filter is highly portable and can be assembled in day.
Gullywasher Biofilters are built with service in mind. There are no specialized tools needed to service any part of this BioFilter.
Gullywasher`s Upflow Filter Solutions use a removable insert that can be washed and re-used.
Gullywasher upflow biofilters can be easily located at the end of the downspout to treat your hot spots, catching contaminants off metal roofs before they hit the ground.
We can collect the rain-water via sumps and catch basins and pump the water to this system.
We can utilize virtually any filter media; however, the lab test results are focused solely on the use of filter-grade biochar. Third-party lab results have shown 99.7% removal of metals over a year’s service.