Machine Design
  • Resources
  • Members
  • Directory
  • Webinars
  • WISE
  • CAD Models
  • Advertise
    • Search
  • 3D Printing & CAD
  • AUTOMATION & IIOT
  • Robotics
  • Motion Systems
  • Materials
  • Video
  • Data Sheets
  • Topics
    Industry Markets3D Printing & CADAutomation & IIoTFastening & JoiningMaterialsMechanical & Motion Systems Medical DesignRobotics
    Resources
    Machine Design ResourcesWISE (Workers in Science & Engineering)Company DirectorySearch Data SheetsContributeDigital Edition ArchivesCSIA Exchange
    Members
    ContentBenefitsSubscribe
    Advertise
    https://www.facebook.com/MachineDesignMagazine/
    https://www.linkedin.com/company/10998894
    https://twitter.com/MachineDesign
    https://www.youtube.com/channel/UCXKEiQ9dob20rIqTA7ONfJg
    Machinedesign 6517 Locks Promo 0
    1. News
    2. What's Inside?

    Locks On Rivers That Stop Invading Species

    June 23, 2014
    Around 1900, civil engineers connected the Great Lakes to the Mississippi River Basin to let shippers access both waterways. But within the past 30 years, biologists and the Army Corp of Engineers have been trying to keep aquatic species from moving out of native habitats in the Great Lakes and into the Mississippi River Basin and vice versa.

    Around 1900, civil engineers connected the Great Lakes to the Mississippi River Basin to let shippers access both waterways. But within the past 30 years, biologists and the Army Corp of Engineers have been trying to keep aquatic species from moving out of native habitats in the Great Lakes and into the Mississippi River Basin and vice versa. Currently, professional and amateur fishermen in the Great Lakes, along with the area’s tourist industry, are desperately seeking ways to prevent Asian carp from getting from the Mississippi into Lake Michigan, a gateway to the rest of the Great Lakes and St. Lawrence Seaway. One method being suggested are a series of locks with special provisions for keeping fish and other aquatic species from getting through.

    Machinedesign Com Sites Machinedesign com Files Uploads 2014 06 Locks Whats Inside
    Ships approaching these so-called Great Lakes and Mississippi River Inter Basin (GLMRIS) locks first pass over a series of passive electrodes that send enough current into the water to stun and repel fish and other aquatic animals. Then, once the vessel is in the locks and gates are closed at both ends, pumps suck out untreated water from the entry end while other pumps send treated water into the other end. This keeps the vessel afloat while the water is exchanged. Treated water consists of river or lake water that has been sent through screens small enough to remove any fish and animals. Then it is filtered through sand to remove eggs, seeds, and other small pieces of organic matter. Finally, the water is irradiated with UV light to kill the vast majority of any remaining microorganisms.

    Once sufficient time has passed to allow all the water to be exchanged, the far gates open and the ship passes through, without any hitchhiking fish or plants. The Corp of Engineers estimate such a project could cost $15 billion and take 25 years.

    Sponsored Recommendations

    Smart Factory Solutions that Connect and Protect from Amphenol RF

    Nov. 28, 2023

    Stay Connected and In Control of Your Future Factories with Littelfuse

    Nov. 28, 2023

    Turn to NKK Switches for the Widest Range of Industrial-Savvy Electromechanical Switches

    Nov. 28, 2023

    Unlocking Operational Flexibility in Manufacturing with Industria IoT

    Nov. 28, 2023

    Voice your opinion!

    To join the conversation, and become an exclusive member of Machine Design, create an account today!

    I already have an account

    New

    EXAIR Introduces PEEK ½ NPT Super Air Nozzle

    Using Natural Language Understanding to Power Productivity

    Intelligent Assistant Platforms Improve Conversations with Industrial Robots

    Most Read

    Brushed vs Brushless Motors: Which is Best for your Application?

    The Cyber-physical Training Module

    How Much Should a Bolted Joint be Tightened?

    Machine Design
    https://www.facebook.com/MachineDesignMagazine/
    https://www.linkedin.com/company/10998894
    https://twitter.com/MachineDesign
    https://www.youtube.com/channel/UCXKEiQ9dob20rIqTA7ONfJg
    • About Us
    • Contact Us
    • Advertise
    • Do Not Sell or Share
    • Privacy & Cookie Policy
    • Terms of Service
    © 2023 Endeavor Business Media, LLC. All rights reserved.
    Endeavor Business Media Logo