CDFU or Conventional DAF: Picking a Flotation Route for Emulsified Oil

2026-11-05

Two flotation technologies share a name but not a mechanism. This comparison sets CDFU cyclonic dissolved gas flotation against conventional dissolved air flotation on bubble size, hydraulic retention time, chemical demand, footprint and sludge production

Hard Water in Industrial Service: Degrees, Deposits and Five Softening Routes

2026-11-05

Hardness is calcium and magnesium counted in degrees, where one degree equals 10 mg of calcium oxide per liter, and that single number decides how a plant treats its water. This article explains how the ions enter the water cycle, why boiler scale is a sa

Shale Gas Fracturing Flowback Fluid: A Mobile CDOF Plus CDFU Train That Returns Water to the Fracturing Loop

2026-11-04

Fracturing flowback fluid carries partially degraded gelling agents, formation salts, hydrocarbons and fines that threaten ecosystems if released untreated. This piece explains the proppant-driven origin of the waste stream, the skid-mounted CDOF and CDFU

Bottom Water in Crude Oil Tanks: A Coalescing Plus CDFU Train Keeps Depot Wastewater Discharge on Spec

2026-11-04

Oil storage facilities must strip settled bottom water from crude oil without releasing oil and suspended solids into discharge. This article walks through the two-unit train of coalescing de-oiling plus CDFU cyclonic flotation: the gravity buffer stage,

Sodium Sulfate Wastewater on the Lab Bench: What a CDOF Trial Says About Ozone Dosing and COD Removal

2026-11-04

Sodium sulfate wastewater from chemical, pharmaceutical, dyeing and pesticide plants demands a process matched to wastewater source, quality characteristics and discharge standards. This article reviews the SINOKLE CDOF experimental process, explains why

Acidic Water From Refining and Coking: Why Conventional Units Choke and Which Process Chain Holds the Line

2026-11-04

Acidic water from refining and coking carries oil at 500-3,000 mg/L, coke powder solids and droplets below 5 microns that gravity settling cannot touch. This piece covers the SINOKLE CDFU-based process combinations, the Chad and Henan cases from 500 ppm t

Power Plant Oily Wastewater: Sizing CDFU, KHC and KFM Stages to Tank Farm, Coal-Washing and Leachate Loads

2026-11-04

Power plant wastewater swings from heavy-oil tank farm water at 500,000 ppm to light-oil runoff near 50 mg/L, with coal-washing fines in between. This article maps the SINOKLE answer: the CDFU core rated at 500 m3/h with over 90% oil removal, three case p

Produced Water Reinjection Schemes for Ageing Oilfields: Matching CDFU Stages to Formation Permeability

2026-11-04

Mid-to-late stage oilfields face produced water with oil up to 2,000 mg/L and conventional trains that cannot hold reinjection quality. This piece details the SINOKLE CDFU-based flow, three reinjection schemes targeting 10, 6 and 5 mg/L effluent oil by fo

No Chemicals, No Sludge: How CDFU and KHC Strip Emulsified Oil From the Toughest Industrial Wastewater

2026-11-04

Emulsified oil defeats conventional chemical-dosing processes on cost and secondary pollution alike. This article explains how the chemical-free SINOKLE chain pairs CDFU cyclonic dissolved air flotation with the KHC coalescing oil-water separator, compare

Waste Drilling Fluid From Wellsite to Compliance: Sources, Hazards and a Zero-Landing Route on CDOF and CDFU

2026-11-04

Waste drilling fluid blends cuttings, clay, chemical additives, wastewater and waste oil into a stable colloidal suspension with high COD, high mineralisation and deep colour. This article maps its eight sources, the constituents that do the most environm