Concrete Canoe. The Greek polymath Archimedes is said to have solved the mystery of buoyancy in a bathtub. Even if the story is apocryphal, his principle isn't: If an object weighs less than the water it displaces, it won't sink. Even concrete can float. Materials scientist Joseph-Louis Lambot built a concrete dinghy featured in the 1855 World's Fair.
Definition of BIOFILTER. : a filter bed in which sewage is subjected to the action of microorganisms that assist in decomposing it. ADVERTISEMENT. 2bi- + filter.rigin of BIOFILTER. 2bi- + filter. This word doesn't usually appear in our free dictionary, but the definition from our premium Unabridged Dictionary is offered here on a limited basis.
Biofilter media moisture control is essential for odor reduction through a biofilter. Inadequate moisture can allow the media to dry out, deactivating the microbes, and creating cracks and channeling of air which results in a reduction of filter efficiency.he biofilter on the south side of the gestation barn is 180 ft long by 21 ft wide and the one on the west side is 60 ft by 21 ft. The media on both is 11 in. (0.28 m) deep. The biofilter on the west side of the farrowing barn is 90 ft long by 21 ft wide.