wet chemistry system Articles

  • An evaluation of the residual toxicity and chemistry of a sodium hydroxide‐based ballast water treatment system for freshwater ships

    Non‐native organisms in the ballast water (BW) of freshwater ships must be killed to prevent the spread of invasive species. The ideal BW treatment system (BWTS) would kill 100% of BW organisms with minimal residual toxicity to organisms in receiving waters. The residual toxicity and chemistry of a BWTS was evaluated: sodium hydroxide was added to elevate pH to > 11.5 to kill BW organisms, ...


    By John Wiley & Sons, Ltd.

  • Wet Electrostatic Precipitation Demonstrating Promise for Fine Particulate Control

    Editor’s Note: Part l of this two-part feature on wet electrostatic precipitation (wet ESPs) outlines the need for multi-pollutant air pollution control technologies, the basics of wet and dry electrostatic precipitation, the ability of wet and dry ESPs to treat fine particulate, and the use of wet ESP technology at Northern States Power Company’s Sherco Station. Part II will explore the key ...


  • Tri-NOx Multi-Chem Wet Scrubber. Case Study of Our NOx Scrubber in a Hydroprocessing Plant.

    Criterion Catalyst Co. L.P. is the world's largest supplier of catalysts for hydroprocessing, including hydrotreating applications. The company is also a leading supplier of reforming and specialty catalysts for the refining industry. Criterion's facility in Azusa, CA installed a Tri-NOx Mult-Chem scrubber with a 3000 cfm capacity at 250 lbs./hr. of NOx. The system has four polypropylene columns, ...


    By Tri-Mer Corporation

  • Zero discharge system handles german power station’s fgd wastewater

    Evaporator/Crystallizer Combined with Salt Exchange Pretreatment is the Answer for this Demonstration Plant. The Facility A major European utility has several power block units fitted with wet limestone FGD scrubbers at their 600 MW power station in southern Germany. The blowdown from the scrubbers is treated to remove the heavy metals and suspended solids. The ...

  • Whole Effluent Toxicity Testing

    What is Whole Effluent Toxicity (WET) testing? Whole Effluent Toxicity (WET) testing is an important component of the U.S. Environmental Protection Agency’s (USEPA’s) integrated approach for detecting and addressing toxicity in surface waters. The National Pollutant Discharge  Elimination System (NPDES) permit program, authorized by the Clean Water Act, controls water pollution by ...

  • Nitrogen Oxide Technology gives American Superconductor an economical, environmentally friendly treatment solution

    The installation of Bionomic Industries Inc.'s (Mahwah, NJ) innovative ScrubPac. BIONOxSOLVER" abatement system is enabling American Superconductor Corporation to treat the nitrogen oxide (NOx) emissions from a calcination process at its new, high temperature superconductor manufacturing facility (Devens, MA), in a cost-effective, environmentally responsible way. Bionomic Industries' ...


    By Bionomic Industries Inc.

  • Nitrogen Oxide Technology Gives American Superconductor an Economical, Environmentally Friendly Treatment Solution

    Untitled Document The installation of Bionomic Industries Inc.'s (Mahwah, NJ) innovative ScrubPac™ BIONOxSOLVER abatement system is enabling American Superconductor ...


    By Bionomic Industries Inc.

  • Are membranes the answer to odor?

    ABSTRACT A microporous hollow fibre membrane operating in non-wetted mode has been applied to the removal of hydrogen sulphide from gas streams. The case studies under investigation were (i) H2S absorption within single passage through the membrane and (ii) H2S absorption with recycle. Counter-current flow configuration was considered with the test contaminant passing through the shell-side of ...

  • Dog Food Processor Wastewater Case Study

    Pet Food Industry Wastewater Treatment Dog Food Processor A dog food processing facility was using ferric chloride and an anionic polymer to treat their wastewater using an Air Sparged Hydrocyclone ...


    By Integrated Engineers Inc.

  • Increasing condenser capacity without adding tubes to support a station uprate

    Abstract A station uprate provides an economical opportunity to improve the generation capacity of a power plant if all the major system components are able to handle the effects of increased generation. The magnitude of uprate from increased steam generation will be limited by the maximum capacity of the weakest link in the cycle, which for many plants is the condenser. The condensers ...


    By Intek, Inc.

  • What is Chemical Oxygen Demand (COD)?

    Chemical Oxygen Demand (COD) analysis is a measurement of the oxygen-depletion capacity of a water sample contaminated with organic waste matter. Specifically, it measures the equivalent amount of oxygen required to chemically oxidize organic compounds in water. Why Measure COD? COD is used as a general indicator of water quality and is an integral part of all water quality ...


    By MANTECH

  • FUEL-WASH Mercaptan Removal

    Summary Finding the right treating solution to remove impurities from hydrocarbon streams is a challenging task for any refiner and one of the chief research scientists from the Merichem Company found the FreshAWL chemistry as an interesting and plausible solution to assist in their processing systems for the removal of Mercaptans from RSH (Mercaptan Laden) Kerosene. FreshAWL ...


    By FreshAWL, LLC

  • TOTALOX Odor Eliminator: The Two Step Treatment in One Package - Case Study

    Collection Systems Are Tough! With miles of pipe and multiple pumping stations, managing the complexity of a wastewater collection system is a full time job. The main task is to maintain the system and keep it flowing. But also near the top of that task list is preventing nuisance odors. When the phone starts ringing, you become a detective. First, you have to find the site or sites ...


    By Carus Corporation

  • A new approach to drilling waste management – prevention!

    Grangemouth based Surface Active Solutions (SAS) has developed its microemulsion based technology to aid the prevention and management of drilling waste. The many activities surrounding the removal of drilling mud in surface and downhole cleaning applications usually generate significant volumes of oil contaminated drilling waste. The drilling mud is typically removed through the use of solvents ...

  • NOx Scrubbing Technology Breakthrough

    Pacific Rim Design and Development and Dupont are proud to introduce a technology breakthrough in the treatment and safe elimination of problematic nitric oxide (NO) and nitrogen dioxide (NO2 ).  There are six forms of nitrogen oxide (NOx); the drawings to the right show the two most problematic forms.  These two are of particular interest because they are identified as atmospheric ...


  • Metals & Finishing Industrial Wastewater Treatment

    Industrial Wastewater Treatment Success Stories Metals and Finishing Industrial Wastewater Treatment Aircraft Components - 80% Cost Reduction ...


    By Integrated Engineers Inc.

  • Poultry Food Short

    This facility processes, seasons, cooks, and flash-freezes poultry products and wanted to increase their production. The existing wastewater system could not meet the discharge requirements to the local POTW (city) and more stringent limits were imposed as a condition of their expansion. The facility was looking at a tremendous capital improvement cost to increase the size of their wastewater ...


    By Integrated Engineers Inc.

  • Abrasives case study - Essroc Materials, Inc.

    Plugging, Surging and Wear-Through Virtually Eliminated by Smart Elbows® At Essroc Materials, Inc., formerly Coplay Cement, plugging and elbow wear in pneumatic conveying lines caused unnecessary downtime and repair expense. The Frederick, MD, facility is a wet-process cement plant that produces 350,000 to 400,000 tons of cement a year using two 400-foot-long rotary ...


    By HammerTek Corporation

  • Improved HF monitoring in Primary Aluminium Smelters with Laser Gas Detectors

    Primary aluminium smelting generates large amounts of hydrogen fluoride gas (HF). Concerns for worker safety and ambient air quality require that HF be monitored at several locations in smelters. Historically, a variety of methods have been used for HF monitoring. Cassette samplers and wet chemistry techniques, coupled with complex and expensive ...


    By Boreal Laser Inc.

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