Online sensing and control of oil in process wastewater

Irina B. Khomchenko; Alexander D. Soukhomlinoff; T. F. Mitchell; Alexander E. Selenow

doi:10.1117/12.456940

22 February 2002 Online sensing and control of oil in process wastewater

Irina B. Khomchenko, Alexander D. Soukhomlinoff, T. F. Mitchell, Alexander E. Selenow

Proceedings Volume 4576, Advanced Environmental Sensing Technology II; (2002) https://doi.org/10.1117/12.456940
Event: Environmental and Industrial Sensing, 2001, Boston, MA, United States

Abstract

Industrial processes, which eliminate high concentration of oil in their waste stream, find it extremely difficult to measure and control the water purification process. Most oil separation processes involve chemical separation using highly corrosive caustics, acids, surfactants, and emulsifiers. Included in the output of this chemical treatment process are highly adhesive tar-like globules, emulsified and surface oils, and other emulsified chemicals, in addition to suspended solids. The level of oil/hydrocarbons concentration in the wastewater process may fluctuate from 1 ppm to 10,000 ppm, depending upon the specifications of the industry and level of water quality control. The authors have developed a sensing technology, which provides the accuracy of scatter/absorption sensing in a contactless environment by combining these methodologies with reflective measurement. The sensitivity of the sensor may be modified by changing the fluid level control in the flow cell, allowing for a broad range of accurate measurement from 1 ppm to 10,000 ppm. Because this sensing system has been designed to work in a highly invasive environment, it can be placed close to the process source to allow for accurate real time measurement and control.

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Irina B. Khomchenko, Alexander D. Soukhomlinoff, T. F. Mitchell, and Alexander E. Selenow "Online sensing and control of oil in process wastewater", Proc. SPIE 4576, Advanced Environmental Sensing Technology II, (22 February 2002); https://doi.org/10.1117/12.456940

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KEYWORDS

Liquids

Sensors

Industrial chemicals

Chemical analysis

Calibration

Reflectivity

Chemical reactions

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