PAC and PAM dosing adds dissolved solids that no filter removes. In reuse systems feeding RO, UF or EDI, that TDS increment raises osmotic pressure, scales membranes and cuts recovery.
Flotation and oxidation leave fine solids and trace oil behind. KFM active filter media closes the gap with hydrophilic modified media; two project cases show the terminal numbers it holds.
Fracturing flowback fluid is saline, viscous, high in COD and full of refractory polymer. Four barriers, cyclonic flotation, coagulation, ozone gel breaking and SFM filtration, handle what one cannot.
HPAM from polymer flooding keeps produced water viscous after oil removal and ruins filter media. CDOF combines cavitation, ozone catalysis and cyclonic flotation to break the gel in minutes.
A Middle East oilfield CPF gathers five distinct wastewater streams into one network. CDFU cyclonic flotation plus SFM filtration takes it to reinjection quality with no chemical dosing at all.
Ozone contactors waste most of the gas they are fed. CDOF couples catalytic oxidation, cyclonic mass transfer and flotation in one enclosed vessel, cutting reaction time from 60-90 min to 10-15 min.
Oily wastewater carries floating, dispersed and emulsified oil at once. CDFU stacks cyclonic separation, dissolved-air flotation, micro-nano bubbles and coalescence; two project cases show the results.
Deeply emulsified oily wastewater defeats DAF and IGF. This analysis explains the microbubble and centrifugal coupling inside CDFU, its 15-60 second retention, chemical savings and enclosed VOC control.
Landfill leachate defeats conventional flow sheets. A closed-loop train combining CDFU, multi-stage CDOF ozone oxidation, high-efficiency denitrification and MBR cuts footprint and chemical use while holding effluent stable.
Light-oil depot draw-off water must meet two goals at once: reusable effluent and saleable recovered gasoline. This breakdown explains how CDFU rough flotation plus KHC coalescing deoiling achieves both without chemicals.