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Portable wastewater treatment system

Tullow Oil installed a portable Wastewater treatment system in Kapese Camp, Turkana. The system was a 100,000L/D Moving Bed Biofilm Reactor (MBBR).

Ecodepur provided the system installed By CESP Africa .CESP Africa is an authorized distributor for Ecodepur, in Kenya and the East African community.

Preliminary treatment

In this step materials that may damage and/or choke the system downstream are removed of the wastewater. A wire mesh at the inlet of the portable system and holds all this dirt and is periodically emptied.

Secondary Treatment Module (Biological)

Biological Reactor

  • In this step, the wastewater is aerated artificially through a forced air introduction system. Contact occurs between the organic matter present in wastewater and the microorganisms responsible for the oxidation process.
  • The wastewater is aerated through a fine bubbles diffusion system powered by an electric blower commanded by a programmer clock.
  • The aeration ensures aerobic biological degradation of effluent, thus ensuring high levels of treatment and the absence of unpleasant odors. Noise levels generated by the blower are negligible
  • The reactor employs MBBR (Moving Bed Bio Reactor) technology, based on the biomass development in plastic supports (carriers) which are suspended in the liquor mixture of the bioreactor.
  •  These carriers allow the growth of much more micro-organisms per unit volume than in a conventional system which enables the use of smaller reactor.
  • Furthermore, the attached biomass makes the reactor more robust.

Secondary Sedimentation Tank.

  • After aeration and biological treatment, the effluent passes to the secondary sedimentation tank, or clarifier, where the suspended sludge settles to the bottom of the tank and the clarified water exits the treatment unit trough an overflow weir.
  • The excess sludge accumulation is removed with a submerged pump to the sludge management facilities and conducted to the final destination, which can equate to its recovery as agricultural improver (manure).


  • Filtration is a process for the suspension matter removal. The particles normally kept in the filters include organic natural matter (colloidal and precipitated) and microorganisms.
  • Disinfection.
  • The disinfection objective is the destruction of pathogenic microorganisms, constituting an operation rather used as in waters supply treatment as in wastewaters treatment.
  • The most common disinfectant is the chlorine.

Contact/Storage of treated wastewater

  • It is necessary to secure a least time of contact (around 30 minutes) between the water to treat and the disinfectant to guarantee the treatment of same.
  • Besides securing of the contact time between the water and disinfectant this chamber also allows the storage of the effluent after disinfection.

Advantages of Ecodepur Portable wastewater System

  •  The whole system is portable
  •  Absence of unpleasant odors
  •  Null visual impact
  •  Negligible noises and vibrations
  •  Easy to install and maintain
  •  High mechanical resistance and corrosion protection
  •  Automatic functioning.