Sour Water from Atmospheric and Vacuum Units: When a Sulphur Recovery Unit Is Overkill

2026-10-12

Sour water from a refinery's atmospheric and vacuum units is routinely sent to the sulphur recovery unit regardless of how mild it actually is. At one large refinery, three months of monitoring showed sulphides near 30 ppm and ammonia nitrogen near 20 ppm

Cloud-Intelligent Oilfield Wastewater Management: Linking CDFU Units to One Platform

2026-10-12

As Chinese oilfields move into the middle-to-late stage of development, produced water volumes climb and manual operation stops scaling. This article looks at the operating bottlenecks behind that shift, then at the SINOKLE cloud monitoring platform, whic

Emulsified Oil in Oily Wastewater: Why Ultrafine-Bubble CDFU Outperforms Conventional DAF

2026-10-12

Floating oil can be skimmed. Emulsified oil cannot. Droplets of 1-5 microns stay suspended because a surfactant shell holds them apart, and gravity alone will not move them. This article explains why chemical dosing, conventional dissolved air flotation a

CDFU Swirl Dissolved Air Flotation: How Micro-Bubbles Take Over Separation

2026-10-12

Gravity settling, chemical demulsification and conventional flotation each leave oily wastewater under-treated. This article explains how CDFU swirl dissolved air flotation combines tangential inlet, micro-bubble capture and sealed pressurised operation t

KHC Coalescing Oil Separator: Pure-Physical Deoiling Explained

2026-10-12

Micron-scale emulsified droplets are what limit pre-treatment performance, and chemical demulsification solves them at a cost. This article explains the KHC high-efficiency coalescing oil separator: its super-hydrophilic surface treatment, CFD-optimised i

Landfill Leachate Treatment Without Membrane Concentrate: A Different Route

2026-10-12

Leachate is high in salinity, COD and colour, and membrane trains leave a concentrate nobody wants. This article looks at the integrated SINOKLE system built on homogeneous and heterogeneous multi-catalytic oxidation, its tiered purification pathway, its

CDOF: Rethinking Ozone Oxidation for High-COD Industrial Wastewater

2026-10-12

Fenton, single-stage ozone and membrane concentration all leave behind sludge or concentrate. This article explains how CDOF couples ozone advanced oxidation, cyclonic mass-transfer intensification and flotation in one vessel, and what that changes in rea

HCC Cyclonic Coalescer: Six Design Choices That Change Its Performance

2026-10-12

Emulsified oil and fine suspended solids are the two fractions conventional coalescers handle badly. This article breaks down the SINOKLE HCC cyclonic coalescer, from its 0.1 μm separation capability and sub-three-minute residence time to the modular cart

Produced Water in Dispersed Oilfields: Why a Mobile Skid Beats Fixed Plant

2026-10-12

Dispersed mature-oilfield blocks producing only a few hundred barrels a day cannot justify a fixed produced water plant, and fixed plant cannot relocate. This article examines the SINOKLE containerised two-stage CDFU plus KFM unit, its treatment figures,

Refinery Sour Water: Breaking the Emulsion Before the Stripper Tower

2026-10-12

Highly emulsified sour water from coking and hydrocracking units defeats gravity settling and strains conventional flotation, which reaches only 60% to 70% removal. This article compares the mainstream options against the three-stage SINOKLE train that ho