oil-in-water measurement Articles

  • Reverse Osmosis and Nanofiltration Membrane Filtration Systems: Common Problems and How to Fix Them

    Reverse osmosis (RO) and nanofiltration (NF) are membrane filtration technologies that are designed to remove solute ions and molecules from a pretreated liquid stream. Well-designed RO/NF units are compact and demand relatively little maintenance, making them an attractive alternative to conventional treatment trains. Even despite the merits of today’s efficient RO/NF technologies, it pays ...


    By SAMCO Technologies, Inc.

  • Kansas Facility Finds Fast, Reliable Fix to Cavitation Damage

    The Hutchinson (Kansas) Water Plant gets its water from 20 wells. The water is pumped out of the wells and into a reverse osmosis water treatment center to purify and ensure safe drinking water. At that point, a portion of the water is taken off from the main line, run through the reverse osmosis system and then mixed back ...


    By Singer Valve Inc.

  • Western gateway storage company first to save with Evapcold - Case Study

    The best solution for freezer and cooler applications Western Gateway Project Specifications Equipment: (2) LCR-060P-L20-2H-W Evapcold Units (2) ATWB 9-7K12 Fluid Coolers Capacity: 70 TR per LCR Unit x (2) = 140 TR max capacity Charge: 290 lbs. NH3 per LCR Unit x (2) = 580 lbs. NH3 vs. 3500 lbs. NH3 ...


    By Evapco Inc.

  • Emulsion-Breaking Techniques for Accurate Oil in Water Measurements

    A White Paper discusses emulsion-breaking techniques for ensuring accurate oil in water measurements. Certain water samples, such as those containing detergent, may form an emulsion when oil in water extraction into a solvent is done. In order to ensure an accurate measurement, the emulsion must be broken. Six techniques are described that can be used for reducing an emulsion ...


    By Spectro Scientific

  • Comply with Highly Regulated Oil in Water Measurements Using Portable Infrared Analyzers

    The Petroleum Industry – both offshore and onshore -- has regulations that limit the amount of oil in discharged water.  Fixed filter infrared (IR) analyzers have been used to test oil levels in produced water on drilling platforms for over 45 years for a number of reasons. On oil rigs where real estate is at a premium, infrared analyzers such as the Wilks InfraCal TOG/TPH ...


    By Spectro Scientific

  • New White Paper features Solvents for Oil and Grease in Water Measurements

    A White Paper entitled, “Solvent Choices for Infrared Testing of Oil and Grease in Water” was recently published by Wilks Enterprise, Inc.  Infrared (IR) analysis is widely used worldwide for determining the amount of oil and grease in water as it is a cost-effective measurement technique that can be easily done on-site or in a laboratory.  Since water is a strong absorber ...


    By Spectro Scientific

  • Oil in frac water testing

    The amount of water used in and produced by hydraulic fracturing of shale gas wells is in the millions of gallons per well. Whether the water is going to be taken off site for disposal or reused for re-injection, the flowback or produced water needs pretreatment to remove any residual oil from the wa-ter. Waiting for remote laboratory results can take several days to a week. The InfraCal TOG/TPH ...


    By Spectro Scientific

  • Guide to Measuring Particles in Oil

    Particle counting is a critical aspect of any machine conditioning program and there are many tools out there available to monitor and track the quantity and severity of the contamination, be it due to external contamination or machine wear. The ...


    By Spectro Scientific

  • Techniques for Oil in Water Analysis

    The people responsible for conducting oil in water measurements understand that the measurement can be quite challenging. Wastewater from different sources can contain many different types of hydrocarbons, each with different chemical make-ups. On top of the lack of chemical uniformity in different oils, there has been a ...


    By Spectro Scientific

  • Measurement matters

    The following article highlights some of the latest developments within the Energy Institute’s Hydrocarbon Management Committee (HMC), which produces guidance documents covering petroleum quantity and quality issues. The most significant news over the past few months is that the Energy Institute (EI), through the British Standards Institution, has been awarded the Secretariat of the ISO ...


    By Energy Institute (EI)

  • Water quality measurement extreme

    Background The characteristics of the Rio Tinto in the south-west of Spain, near Sevilla, are his ruby colour and the extremely sour pH-value between 0 and 2 pH-units. The river carries a mixture between poisonous heavy metals like copper, nickel, arsenic, iron and cadmium, dissolved in high-percent sulphuric acid. It’s not proved where these unusual conditions come from. As per current ...


    By The OTT Hydromet Group

  • E-Guide Measuring Oil Viscosity

    The most important physical property of a lubricating oil is viscosity. Viscosity determines the load carrying ability of the oil as well as how easily it circulates. The correct balance between high viscosity for load carrying and low viscosity for ease of circulation must be considered for any lubricant and its application. ...


    By Spectro Scientific

  • Understanding Oil-in-Water Instrument Specifications

    The measurement capabilities of oil-in-water analysis methods are described by several analytical figures-of-merit. Examples are: Range (Linear and Dynamic) Limit of Detection (LOD) Limit of Quantification (LOQ) Precision (Repeatability and Reproducibility) Sensitivity Accuracy Response Time Some or all of these are often specified by customers in the bid packages issued when selecting a ...

  • Produced Water Colorado Oil Patch

    Demonstrating the treatability of Integrated Engineers flocculating agents in the treatment of Colorado Oil Patch Produced waste water.   Oily Wastewater Treatment Jar Test Colorado Oil Patch This sample is representative of the produced water from the Colorado oil patch region. ...


    By Integrated Engineers Inc.

  • Solvent-free oil-in-water analysis

    Non-ionic surfactants can homogenize oily, produced water samples, creating optically clear microemulsions that are ideal for fluorescence measurements [1]. The use of surfactants to reduce fouling and improve the performance of on-line, fluorescence-based, oil-in-water monitors has been reported previously [2,3]. This paper describes the use of surfactants to prepare discrete water samples ...

  • Surfactant-assisted oil-in-water monitoring

    A variety of common surfactants have been used to reduce fouling and enhance the performance of fluorescence-based oil-in-water monitors. Among the most effective are the alcohol ethoxylates with HLB values close to 12. Examples are SurfonicTM L24-9 (Hunstman, USA, HLB 13) and TergitolTM 15-S-7 (HLB 12.1). These surfactants readily convert heterogeneous oil/water mixtures into homogeneous, ...

  • Measurement of naphthenic acids in the receiving waters around an offshore oil platform by passive sampling

    Polar organic chemical integrative samplers (POCIS) were deployed in the vicinity of an offshore oil installation and analysed for naphthenic acids (NA). POCIS accumulated a range of mono to tetracyclic NA, with different degrees of alkylation, with monocyclic acids being the most abundant. POCIS or similar polar samplers may currently be the only way to measure exposure to NA from offshore ...


    By John Wiley & Sons, Ltd.

  • Portable Infrared Analyzers Provide On-Site Measurement of Oil and Grease Levels in Hydraulic Fracturing Water

    The amount of water used in and produced by hydraulic fracturing of shale gas wells is in the millions of gallons per well.  Whether the water is going to be taken off-site for disposal or reused for re-injection, the flowback or produced water needs pretreatment to remove any residual oil from the water.  Waiting for remote laboratory results to determine the oil level can take several ...


    By Spectro Scientific

  • What the Wastewater Industry can learn from the Petroleum Industry when it comes to measuring oil in water

    I recently read a comment in the Steve Jobs biography by Walter Isaacson that different divisions within a company do just what the name implies—divide a business.  Integration across and communication between the departments was essential to smooth functioning product.  I think the same is true in the analytical analysis/measurement world—there seems to be a divide in ...


    By Spectro Scientific

  • Introduction to Fluorescence for Oil in Water Monitoring

    Fluorescence can be found in many applications throughout our day-to-day routines. Commercially, one of the most obvious uses is in fluorescent lighting. For this, fluorescence is used to emit light from a tube without the use of heat, unlike standard incandescent light bulbs that require a heated element. In this example, fluorescence also contributes to energy conservation efforts. At an ...


    By Arjay Engineering Ltd.

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