July 10, 2026

Revolutionising Oil Industry Wastewater: ThePower of SWA Water’s Hybrid CPI/DAF Unit

In the oil and gas sector, managing wastewater isn’t just a regulatory obligation; it’s a critical operational challenge. Produced water, refinery effluents, and oily run-offs carry complex mixes of free oil, emulsified hydrocarbons, and suspended solids. Treating this heavy-duty waste requires robust, high-performance engineering.

For decades, Australian businesses and international operations have faced a tough choice: install multiple, sprawling treatment stages, or risk non-compliance. SWA Water, a global leader in industrial wastewater treatment design and manufacture, has engineered a game-changing solution specifically for the oil industry: the Hybrid CPI/DAF Unit.

By merging two powerhouse technologies into a single, compact system, this Australian-engineered innovation is redefining efficiency in industrial water treatment.

The Challenge of Treating Oily Wastewater

Oil industry wastewater is notoriously difficult to treat. Standard separation methods often struggle because the contaminants exist in various states. You have free-floating oil that rises easily, but you also have heavy suspended solids that sink, and emulsified droplets that stay stubbornly suspended in the water column.

Traditionally, achieving high-purity discharge meant routing water through a Corrugated Plate Interceptor (CPI) first to catch the bulk oil, followed by a separate Dissolved Air Flotation (DAF) system to polish out the remaining emulsified oils and fine solids. While highly effective, running two distinct systems demands significant real estate, higher capital expenditure, and doubled maintenance schedules.

Enter the Hybrid: Maximising Efficiency, Minimising Footprint

SWA Water’s Hybrid CPI/DAF Unit solves this dilemma by integrating both technologies into one seamless, high-performance system.

Phase 1: Coalescence (The CPI Stage)

Wastewater first enters the CPI section of the hybrid unit. Here, SWA’s high-efficiency corrugated plate packs dramatically reduce the distance oil droplets need to travel before they coalesce. The large oil droplets quickly separate and rise to the surface for automatic skimming, while heavy solids settle into the sludge hopper below.

Phase 2: Flotation (The DAF Stage)

The water then flows directly into the integrated DAF zone. Microscopic air bubbles are introduced into the stream, attaching themselves to the remaining fine solids and emulsified oil droplets that bypassed the CPI plates. These bubbles buoy the contaminants to the surface, forming a thick blanket of sludge that is continuously skimmed off, leaving behind highly purified water.

The Hybrid CPI/DAF Unit – Built in Australia, Trusted World-Wide

From our manufacturing hub in Australia to industrial sites across the globe, SWA Water builds equipment to withstand the harshest environments. The Hybrid CPI/DAF Unit is engineered with industrial-grade materials, advanced automation, and explosion-proof components tailored to meet the strict safety standards of the oil and gas industry.

By choosing a hybrid system, industrial operators unlock significant benefits:

Reduced Capital and Operational Costs: One unit means fewer pumps, simplified piping, and reduced power consumption.
Space-Saving Design: Ideal for offshore platforms or space-constrained refineries where real estate is at a premium.
Unrivalled Reliability: SWA Water’s heavy-duty engineering ensures continuous operation with minimal downtime.

Future-Proofing Your Environmental Compliance

As environmental regulations tighten globally, oil companies must adopt smarter, cleaner technologies. SWA Water’s Hybrid CPI/DAF Unit ensures your site reliably meets strict discharge limits, protects local ecosystems, and prepares your business for a sustainable future.

Whether you are operating in the Australian outback or an international refinery, SWA Water delivers the engineering excellence you need to turn wastewater challenges into seamless operational success. Contact our expert engineering team today to discuss a tailored solution for your site.

SWA Water – Australia