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Oily water treatment from the Energy Production Plant

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Year 2013

Project location PT Ibiza (a thermal power plant).

Objectives Solids, oils and hydrocarbons removal from the wastewater of the UPT Ibiza.

Process stages 1st STAGE: reception, coarse oil removal, regulation and pumping. 2nd STAGE: fine oil removal, regulation and recycle to the 1st stage. 3rd STAGE: physical-chemical treatment and clarification. 4th STAGE: final filtration to discharge point.

Installed technologies and Engineering services by SIGMA 1st STAGE: i) systems for fuel and coarse hydrocarbons separation, ii) sieving systems, iii) systems for fine hydrocarbons separation and iv) longitudinal section of sandblasting system; the whole system is presented as a compact unit. 2nd STAGE: dissolved air flotation system SIGMA DAF FPAC-20-S. 3rd STAGE: analysis, design and calculation of the reactive sequence and dosing for the physical-chemical treatment.

Background

The Ibiza Thermal Power Plant or UPT is a conventional cycle thermoelectric facility located in the municipality of Ibiza. It has 13 active thermal groups that add a power of 270 MW (six engines, four gas turbines and three double gas turbines), and which use natural gas as the main fuel and diesel as an auxiliary.

The objective of the technologies and equipment installed by SIGMA is the elimination of solids, oils and hydrocarbons from the wastewater coming from the UTP. The equipment are installed to optimize the existing water purification process.

Performance

Solids concentration in the effluent of the 2nd STAGE  

< 55 mg/L 



Process diagram 

1st STAGE: reception, coarse oil removal, regulation and pumping. 

2nd STAGE: fine oil removal, regulation and recycle to the 1st stage. 

3rd STAGE: physical-chemical treatment and clarification. 

4th STAGE: final filtration to discharge point. 


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