With increasingly stringent industrial wastewater discharge standards, the treatment of oily wastewater has become a significant environmental challenge for industries such as petrochemicals, machinery manufacturing, and steel metallurgy. Our independently developed and manufactured CPI oil-water interceptors (Corrugated Plate Interceptors) are becoming the preferred oil-water separation equipment for a growing number of companies due to their highly efficient and stable oil-water separation performance.
The CPI oil-water interceptor is a high-efficiency oil-water separation device based on the principle of shallow pool sedimentation and coalescence separation technology. The device contains multiple sets of corrugated inclined plates. As wastewater flows between the plates, oil droplets rise to the lower side of the plate under gravity and coalesce into larger droplets, eventually rising to the surface and being collected. Meanwhile, suspended solids settle to the upper side of the plate and slide down to the bottom sludge hopper. Through this design, the CPI oil-water interceptor can achieve efficient separation of oil, water, and sludge in a relatively short residence time.
Core Advantages
1. High Separation Efficiency
Removes oil droplets larger than 30 micrometers from water.
Oil removal efficiency reaches 90%-95%, and the oil content in the effluent can be controlled below 10-30 mg/L. The corrugated plate structure increases the coalescence area, promoting the merging of small oil droplets into larger ones and accelerating their flotation.
2. Strong Shock Resistance
Insensitive to fluctuations in influent oil content, suitable for industrial wastewater with varying operating conditions.
Can treat wastewater with oil content exceeding 1000 mg/L.
3. Low Operating Costs
No moving parts, relies solely on gravity separation, resulting in extremely low energy consumption.
No chemical reagents required (optional depending on water quality).
Easy maintenance; simply perform periodic oil and sludge removal.
4. Space Saving
Reduces floor space by 50%-70% compared to traditional oil separators.
Can be designed as above-ground or underground, adapting to different site conditions.
5. Fully Customizable Design
Materials: Corrosion-resistant carbon steel, stainless steel, fiberglass (optional)
Corrugated Plate Material: Polypropylene, stainless steel, FRP (optional)
Processing Capacity: 5-500 m³/hour per unit, expandable by parallel connection of multiple units
Integrates lift pump, oil-water separator, and sludge tank into one unit
Applicable Scenarios
Petrochemical Industry: Oily wastewater from oil refineries, oil tank cleaning wastewater, process condensate treatment
Machinery: Cutting fluid wastewater, parts cleaning wastewater, emulsion treatment
Steel and Metallurgy: Rolling mill wastewater, cooling circulating water, lubricating oil leakage wastewater
Transportation: Oily wastewater from railway locomotive depots, rolling stock depots, and car washes
Oil Depots and Gas Stations: Rainwater from oil tank areas, surface washing water treatment
Food Processing: Edible oil production wastewater, catering wastewater pretreatment
Get More Information
For more details on CPI grease trap products or to obtain a customized solution quote, please contact us. We will provide professional technical solutions and product recommendations based on your water volume, water quality characteristics, and site conditions.
Contact us for a quick quote: winnie@yihuaep.com
