Biofilter is a generic term for anything that uses biofilm attached to a solid medium for separation and biodegradation of contaminants from water or air passing through it. Trickling filter is a type of biofilter used for the wastewater treatment.

These terms are sometimes used interchangeably, which is confusing.

Biofilter is a generic term for anything that uses biofilm attached to a solid medium for separation and biodegradation of contaminants from water or air passing through it. Trickling filter is a type of biofilter used for the wastewater treatment.

These terms are sometimes used interchangeably, which is confusing.

Trickling filter is kind of biofilter system in which biofilm formation takes place on solid material to degrade organic matter presence in water.

Mr.Adam Sochacki is absolutely right.

Thank you for your answers

Hai,

Biofilter is one type of trickling filter. Trickling filters are classified by hydraulic or organic loading, as high-rate or low-rateThe bio-filter is a high-rate filter, usually 3 to 4 feet in depth, employing recirculation at all times. The recirculation in this case involves bringing the effluent of the filter or of the secondary sedimentation tank back through the primary settling tank. The secondary settling tank sludge is usually very light and can be continually fed back to the primary settling tank where the two types of sludges are collected together and pumped to the digester.