Carbon dioxide stimulation of nitrification in activated...

Carbon filtration process and apparatus for removing PCB's...

Catalytic bioconversion of petroleum-contaminated...

Centrifugal oxygenator and method for treatment of waste water

Centrifugal oxygenator for treatment of waste water and system

Chemical detoxification of sewage sludge

Chemical pre-treatment and biological destruction of propylene c

Chemically enhanced primary sludge fermentation method

Circuit purification for the papermaking industry

Clarifier with influent well scum removal

Clip for the support of a dropline in an aerated wastewater trea

Closed apparatus system for improving irrigation and method for

Closed sulfur circulation system

Co-current packed tower bio-reactor

Coconut mesocarp-based biofilter material and its use in a...

Cold climate wetland waste water treatment system

Colored wastewater discoloration method

Combination activated sludge—ballasted flocculation...

Combination trickling filter and overflow tank for secondary...

Combined activated sludge-biofilm sequencing batch reactor...