Single vessel
Moderate inlet load and a less stringent residual-oil target.
Engineered and manufactured in China
Technology
CoaleXpert is a proven, project-configurable engineering solution for produced water and oily wastewater based on oleophobic coalescing media.
Coalescence in the inter-granular space
After pre-separation, water enters the vessel. Fine dispersed oil droplets contact the oleophobic media, collide and grow. Enlarged droplets separate readily; the oil phase and part of the solid contaminants are retained in the bed and removed during backwash. Oil should not be irreversibly adsorbed; the accumulated phase is removed by backwash.
Role of the oleophobic surface
Oleophobic properties reduce irreversible wetting by oil and, together with a correct backwash, reduce the risk of mud-balling and loss of throughput.
Filtration and backwash scheme
Parameters for media selection
- Flow rate, m³/h
- Operating pressure
- Inlet oil, ppm
- TSS
- Solids particle size
- Mineralization / salinity
- pH
- Temperature
- Oil density
- Water density
- Oil viscosity
- Demulsifiers, surfactants and other chemicals
- Existing equipment and tanks from wellhead to produced-water disposal (capacity/volume for each stage)
- Required treated-water quality and capacity (m³/h and m³/day)
- Site and installation constraints
Typical media fractions
Typical ranges only—selection depends on the water:
| Size | Note |
|---|---|
| 0.5–1.0 mm | Fine working fraction |
| 0.7–1.7 mm | Working fraction |
| 1.7–2.5 mm | Working fraction |
| 2.5–4.0 mm | Support layer |
Configuration options
Two vessels in series
Roughing + polishing. Guideline: inlet up to 500 ppm, target below 5 ppm*.
Parallel N+1
Continuous operation during backwash.
Backwash
A short, designed backwash removes accumulated oil and suspended solids and restores the working condition of the media.
Performance depends on the feed water
Guarantees are issued only after water analysis and bench testing.
Performance depends on feed-water properties and the stability of upstream equipment. Guarantees require analysis and pilot testing.
What we need to evaluate your water
Provide the available data. An incomplete set is still enough to start a discussion.
Submit a water analysis and get a technical proposal
Technology FAQ
Is CoaleXpert a disposable adsorption filter?+
No. It is coalescence-enhanced granular treatment with oleophobic media; the accumulated oil phase is removed by backwash.
Does a single vessel always achieve below 5 ppm?+
No. Below 5 ppm is a preliminary project target under validated conditions; the number of vessels depends on the project.
Does the facility operate entirely without chemicals?+
The CoaleXpert stage, under validated conditions, can operate without additional coagulants/flocculants; the upstream chemical program is determined separately.
Who owns the technology?+
CoaleXpert is a Chinese brand; design and manufacturing take place in China.
Can the CoaleXpert media be purchased separately?+
No. For the technology to work correctly, in addition to the media, appropriate equipment design and automatic control algorithms are required—all of which are know-how of the CoaleXpert technology platform.