FOOD TECHNOLOGY

Detailed explanation-1: -Several materials (bark, composted yard waste, coarse soil, gravel, peat, or plastic shapes) are used for the preparation of bed media. Trickling filter is a characteristic example of biofilter, it is extensively used in the treatment of wastewater or liquid effluents or waste constituted into liquid.

Detailed explanation-2: -There are two main types of biofilters: the soil filter and the treatment bed/disk. The major advantage of this technology is the no-sludge production.

Detailed explanation-3: -Biofilters contain filter medium grains (e.g., sand, granular activated carbon) that are covered with biofilms. The biofilm activities break down nutrients (e.g., nitrogen and phosphorous-containing compounds) and organic carbon as well as capture other unwanted contaminants in the influent water.