Ballast Water Tech: N.E.I.

Thursday, February 21, 2013

As ship owners globally face the eventual mandate to install ballast water management technology onboard their ships – a refit which is touted as the most expensive equipment refit ever – Maritime  Reporter & Engineering News in its February 2013 edition examines emerging Ballast Water Technologies for consideration.


In 2002 N.E.I. began development of a de-oxygenation ballast water treatment system – the Venturi Oxygen Stripping (VOS). In 2007, N.E.I. obtained the world’s first IMO Certification-Liberia. 
Venturi Oxygen Stripping (VOS) is a physical process, which removes Dissolved Oxygen (DO) from the ballast water during intake only (no retreatment is required during discharge). VOS does not require any filtration or active substances, and does not require changing ballast pumps due to flow restrictions. VOS leverages a highly efficient Stripping Gas Generator (similar to an Inert Gas Generator) to produce a very low oxygen gas (Stripping Gas). This gas is introduced to the ballast water via a Venturi Injector (VI). The VI generates extreme cavitation/vacuum in-line, creating a bubble emulsion in the ballast water. Within ~10 seconds, more than 95% of the DO is stripped out of solution, and simply vented to atmosphere. Any species dependent upon oxygen is suffocated, treating many controlled species within an hour. However, the oxygen levels are high enough to prohibit anaerobic life. Many organisms are treated during the venturi phase of treatment itself (due to the sheering forces intrinsic to the cavitation process).
VOS is currently Type Approved with a Treatment Rated Capacity (TRC) of 6,800 cu. m./hr.
VOS equipment has been installed on Bulkers, Tankers, and Containerships. A total of 58 systems have been sold to date; specifically, 21 Installed (3 vessels not yet commissioned), 18 commissioned vessels,
www.NEI-marine.com
 

(As published in the February 2013 edition of Maritime Reporter & Engineering News - www.marinelink.com)

Maritime Reporter October 2014 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds

Container Ships

Sea Star Line: Equipment Replacement Plan on Track

Company Receives New Refrigerated Containers and Places Order for New Genset Equipment   Sea Star Line, LLC began receiving the first of its new 100 40’ and 45’

October Imports up 9% at Port of Oakland

Containerized imports shipped through the Port of Oakland were up 9.17% in October from a year ago, the port said, citing the surge as the biggest jump in import cargo volume in six months.

Video: Reefer RoRo Ship Design Rebooted

Expanding on the Reefer RoRo Ship design release in September last year, naval architects group Knud E. Hansen A/S has continued the development of the new Reefer RoRo Ship design with version II.

Vessels

HMAS Success Deploys to Middle East

After months of preparation, HMAS Success departed Garden Island in Sydney today for a six-month deployment to the Middle East Region to provide logistic support

Rosneft Ships First Oil From Chayvo Field

Rosneft commenced shipment of crude oil extracted at the Northern Tip of Chayvo license off the coast of Sakhalin, with the first tanker carrying Sokol-grade crude leaving port on November 21.

USS Oscar Austin Deploys to 6th fleet

Arleigh Burke-class guided-missile destroyer USS Oscar Austin (DDG 79) departed Naval Station Norfolk Nov. 21 for a deployment to the U.S. 6th Fleet area of responsibility (AOR).

 
 
Maritime Careers / Shipboard Positions Maritime Contracts Offshore Oil Pod Propulsion Salvage Ship Electronics Ship Repair Ship Simulators Shipbuilding / Vessel Construction Winch
rss | archive | history | articles | privacy | terms and conditions | contributors | top maritime news | about us | copyright | maritime magazines
maritime security news | shipbuilding news | maritime industry | shipping news | maritime reporting | workboats news | ship design | maritime business

Time taken: 0.0851 sec (12 req/sec)