KM4 is a system of low temperature thermal desorption to eliminate hydrocarbons (oil) contaminants in soils.

The mobile system is mounted on four trailers. The system can be easily moved from place to place and set up within hours.

The small size allows the KM4 to operate in a very restricted area and get the material to process right in place.



  • Before starting the process, a measurement of the material to be treated is made. Then, the operator sets the automatic temperature controls specified in the manual. The soil will be treated based on ecological principles. The discharged material is measured every 100 to 1,000 tons by an instrument that detects hydrocarbons to ensure that the environmental standards are met.

  • The discharge line of the KM4 has a continuous emission monitoring which measures the air coming out of the machine, and displays the results in the control house.

  • The KM4 operates fully automated, once it has completed startup, the processing speed of the raw material is controlled automatically.
    If the moisture content is too low, the machine accelerates.
    If the moisture content is higher, the machine slows down.
    This always guarantees that the material is processed according to the environmental standards.

Estimated set-up time

The estimated set-up time when the equipment is on site is between one and two days.

The components are optimized for quick connection.
To set it ready to move we estimate the same time.

The start-up time for heating the metal components, is approximately 20 to 30 minutes. This is set automatically in the control house, and the temperature rises about 10 degrees Celsius per minute.

The equipment requires two operators. An operator manages the control house. The second operator manages the supply and discharge of material.


Treatment capacity

The KM4 performance mainly depends on five parameters:

  1. Soil type
  2. Moisture content
  3. Type of contaminants
  4. The contaminant level
  5. Cleaning criteria

Under controlled conditions, this system can handle:

  • 10 tons per hour - when the soil is composed of 15% water, 15% oil and 70% solids.
  • 15 tons per hour - with 10% water, 3% oil and 87% solids.

The space required is only 30 x 30 meters.


Waste and process effluents

The KM4 separates water, oil and soil. The remaining thermal oxidizer destroys hazardous gases. Dust particles are mixed with the discharge material.

The water is used to rehydrate the solids during the discharge from the processor.



Click here to download the PDF that shows our recents KM4's test.

Total petroleum hydrocarbon (TPH) is a term used for any mixture of hydrocarbons that are found in crude oil. There are several hundred of these compounds, but not all occur in any one sample. Crude oil is used to make petroleum products which can contaminate the environment. Because there are so many different chemicals in crude oil and in other petroleum products, it is not practical to measure each one separately. However, it is useful to measure the total amount of TPH at a site. Chemicals that occur in TPH include hexane, benzene, toluene, xylenes, naphthalene, and fluorene, other constituents of gasoline, of jet fuels, of mineral oils, and of other petroleum products. Petroleum Hydrocarbon Ranges are monitored at various levels depending on the state and testing site.

TPH is the sum of VPH and EPH. VPH refers to volatile petroleum hydrocarbons (VPH) also known as petrol range organics (PRO) and includes hydrocarbons from C2-C5.

EPH refers to extractable petroleum hydrocarbons (EPH) also known as Diesel range organics (DRO) and includes hydrocarbons from C6-C40. Here is where we deal with the KM4.