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,

(As published in the February 2013 edition of Maritime Reporter & Engineering News -

Maritime Reporter September 2015 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds

Container Ships

FMC's William P. Doyle Issues Statement on EL FARO Tragedy

On Thursday evening, October 1, 2016, the ship EL FARO went missing. The ship was en route from Jacksonville, Florida to San Juan, Puerto Rico. On Monday, four days after the ship vanished,

Search for El Faro Crew Continues, Hopes Fading

Responders continue the hunt for possible survivors from the missing cargo ship El Faro, which is believed to have sunk during Hurricane Joaquin.   As of Tuesday night,

India Extends Tax Benefits on Bunker Fuel

India has extended the benefit of nil custom and production tax on bunker fuels to domestic coastal movement of containers, in a move to decongest its roads and reduce carbon emissions,


Eastern Launches Tug for Suderman & Young

Eastern Shipbuilding Group, Inc. announced it has launched escort tug Triton for Suderman & Young Towing Company on September 11, 2015.   The launch ceremony

ECDIS Ordered for 20 Indonesia Surveillance Vessels

Transas ECDIS has been selected for installation on board 20 surveillance vessels under operation of the Directorate General of Marine Resources and Fisheries Surveillance,

Incat Crowther Designs Ferry for Malaysia

Incat Crowther has been commissioned to design a passenger transport ferry to be operated by Cataferry Sdn Bhd, in Malaysia.   The main deck features a full width cabin accommodating 151 passengers.

Ballast Water Treatment

US Orders EPA to Rewrite Ship Ballast Water Dumping Rules

A federal appeals court in New York ordered the government to rewrite its rules regulating the discharge of ballast water by ships, in a victory for environmental

NOCC Opts for Optimarin BWT System for Its Newbuild

Ballast water treatment (BWT) specialist Optimarin has been chosen by Norwegian Car Carriers AS (NOCC) as the supplier of choice for its two newbuild vessels

Maritime Contracts Naval Architecture Offshore Oil Pipelines Port Authority Salvage Ship Electronics Shipbuilding / Vessel Construction Sonar Winch
rss | archive | history | articles | privacy | 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: 0.9481 sec (1 req/sec)