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O'Neill Vintners & Distillers Unveils Biofiltro's Largest Worm Powered Winery Wastewater System in the World

September 18, 2020

The new system takes up five acres at the winery's Parlier, California facility, near Fresno and consists of 12 basins, or worm beds, each larger than an Olympic sized swimming pool. with 28,000 cubic feet of wood chips and shavings, 6,750 tons of crushed rock and 100 million worms. Each bed is filled with drainage cells, crushed rock, geotextiles, and topped off with a layer of wood chips and shavings. During start up, the beds were seeded with microbes and 22,000,000 California red worms (Eisenia fetida) and which will reproduce and exceed 200 million in population.