Modular plastic packing for the biological treatment of waste wa

Modular rotating biological contactor system

Module for a reactor for anaerobic waste water treatment

Molded block arrangement for a ground covering for composting wa

Multi-layer aerating filter

Multi-stage anaerobic packed column reactor with fixed-film colu

Multi-unit flush system having carbon adsorber column in calcium

Multiple-gas-phase settling tank

Multistage immersion type membrane separator and...

Natural filter for ecological system

Nitrification system and method

Odor reduction system for waste holding tanks

Orbital wastewater treatment system with combined surface...

Organic and animal waste effluent treatment

Organic waste water treating apparatus having treating layer and

Oxygen permeable membrane used in wastewater treatment

Oxygen-supply-capable cooling water equipment,...

Ozone treating apparatus

Packing device for an installation for the biological treatment

Packing element for a biological filter or for use in mass trans