Bacteria supporting medium, especially useful for pretreatment o

Bacterial bed

Baffle system for anaerobic sewage treatment pond

Bi-phasic bioretention system

Bio-filtration apparatus and method for wastewater treatment

Bio-tube aquatic filter

Biochemical reactor of liquid current type, groundwater and wast

Biofilm carrier, method of manufacture thereof and waste...

Biofilter

Biofilter

Biofilter load and the method of producing porous-hollow ceramic

Biofilter units and water treatment facilities with using...

Biological filter

Biological filter heating arrangement for treatment of waste wat

Biological filtration apparatus

Biological filtration system

Biological filtration using parallel sheets

Biological fluidized bed apparatus

Biological oxidation filter system

Biological sewage treatment apparatus of the rotary disc type