Oily Water Treatment
Contaminant Removal from Storm Water

The Oily Water System from DS21 removes free oil and suspended solids from oily water.
Oily storm water results from storm water that predominantly contains free oil and suspended solids (SS). DS21’s Oily Water System is designed to remove free oil and suspended solids (SS) for storm water processing.
If emulsified oil is present in the oily water, additional equipment is required.
Exploring Solutions for Oily Water Treatment or Management Systems?
oily Water Treatment Process
oily Water Treatment Process
Wastewater pond
CPI OIL Separator
A/C Filter
DISCHARGE
oily
WATER
SYSTEMS
TECHNOLOGY
Technologies Overview

API Separator
DS21’s patented API Oil-Water Separator is a device specifically designed to separate substantial amounts of oil and suspended solids from wastewater effluents. The API separator effectively removes free oil particles larger than 150㎛ as a pre-treatment step.

Corrugated Plate Interceptor Oil-Water Separator
CPI is the most widely used oil-water separator, utilizing the specific gravity difference method to separate oil and sludge from oily wastewater. It employs multiple slate or corrugated plates, or enhanced oil separation plates, which are installed either slanted at a 45° angle or horizontally. This design directs the flow from the upper portion to the lower portion, increasing the effective horizontal surface area of the separator without enlarging the separator basin.

Effective Interceptor Plate
EPI Oil-Water Separator, referred to as the new CPI type, is installed to remove free oil (particles larger than 30-60㎛) and total suspended solids (TSS) from wastewater.

Induced Air/Gas Flotation
A water treatment process that clarifies wastewater (or other waters) by removing suspended matter such as oil or solids. This removal is accomplished by injecting gas bubbles into the water or wastewater in a flotation tank or basin or a mechanical type that employs a motor-driven rotor (impeller) to draw air or gas from the vapor phase at the top of the vessel directly into the water phase.

Dissolved Air Flotation
Dissolved air flotation (DAF) is a water treatment technique used to clarify wastewater by removing suspended matter such as oil or solids. This process involves dissolving air into the wastewater under pressure and then releasing it at atmospheric pressure in a flotation tank or basin. The released air forms tiny bubbles that attach to the suspended matter, causing it to float to the surface, where it can be removed by a skimming device.

Nutshell Filter
The Nutshell Filter effectively removes free oil and suspended solids from produced water, refinery wastewater and any water source. It is highly efficient in treating suspended solids, oily residues, ash and metallic hydroxides from industrial liquids generated by petrochemical and other industries. Nutshell media, are resistant to heavy oil surges and experience significantly less fouling compared to other media.