The first major component of the Integrated Waste Management System (IWMS) from Babcock for the new Queen Elizabeth class aircraft carriers – the Waste Water Treatment Plant – has been delivered ready for installation in the first carrier, marking an important milestone.

Designed by Babcock under contract to the Aircraft Carrier Alliance, the IWMS addresses the collection, transfer, treatment, stowage and disembarkation of the various fluid and solid waste streams generated onboard the carriers.

The Waste Water Treatment Plant (WWTP) is a key component of the system, and will process the black (sewage) and grey water (from showers, sinks, galleys and laundries) generated onboard, and discharge permeate compliant with MARPOL 73/78, Annex IV (the international standard for control of marine pollution).? The plant comprises a membrane bioreactor (including cross-flow, aeration, feed and bleed systems) and black water collection system, and each carrier will have three identical, autonomous WWTPs located forward, amidships and aft.

Black water from the heads and medical centre will be vacuum transported to a black water vacuum transfer tank adjacent to each WWTP, while grey water will be predominantly gravity collected to the double bottom grey water tanks (with water from galleys and food processing passing through grease separators).? Subsequent inter-block transfer of black or grey water is an autonomous process controlled by the Integrated Platform Management System.? Bio-sludge generated by the membrane bioreactor units may be periodically pumped either to shore, overboard, or to the Solid Waste and Final Treatment System for drying and thermal destruction (pyrolysis) onboard.? The dry solids content of the bio-sludge will be 2-3%.

Factory acceptance testing of the WWTP was successfully completed at Babcock’s Bristol premises last month, prior to despatch.

To facilitate ship installation, Babcock has grouped and mounted the WWTP equipment and all ancillary items, with interconnecting pipework and cabling, on purpose-manufactured rafts for optimum efficiency, reducing the resources required at the build yards.

Babcock project manager Paul Moxham commented: “Delivery of the WWTP (the first major component of the system), is a key milestone in delivering the first coherent integrated waste management system on a warship, designed to meet current and projected future environmental standards.”

David Goodfellow, Aircraft Carrier Alliance Ship Build Director, said: “The WWTP is a vital component of both ships, and its delivery signals the achievement of an important milestone in the programme. ?Build progress on the Queen Elizabeth Class continues to progress at a pace across the whole programme, but it is great to see real tangible delivery of items such as the WWTP.”

Babcock will be supplying all the IWMS equipment over the next 12 months.? Installation at the shipyards will be undertaken with support from Babcock, who will also undertake commissioning of the system and harbour and service acceptance trials, for final acceptance on the ships by the Aircraft Carrier Alliance.

Source: Babcock

Search to find what you want

• China Industrial Waste Management subsidiary Dalian Dongtai a contract with a world-class Shipbuilding Company is located in Dalian

     DALIAN, China, Jan. 25 /PRNewswire-Asia/ — China Industrial Waste Management, Inc. (OTC:CIWT) (BULLETIN BOARD: CIWT) (’China Industrial Waste Management’ or the ‘Company’), a leading environmental services and solutions provider in China, announced today that the Company’s 90%-owned subsidiary Dalian Dongtai Industrial Waste Treatment Co., Ltd

• Ramsey leaves on-time, in budget -

     Sandown class minehunter HMS Ramsey leaves Rosyth for sea trials today (Friday 4 December), on-time and within budget, following a successful Support Docking Period by Babcock in which close working relationships with ship’s staff and the local MoD team, Clyde Directorate (Rosyth) CD(R), have been a key feature. The established partnering

• Dock ready for Queen Elizabeth class aircraft carrier

     Modifications to No.1 Dock at Babcock’s Rosyth dockyard in preparation for the final assembly and outfitting of the massive new Queen Elizabeth (QE) class aircraft carriers have now been successfully completed.  The achievement marks a significant milestone in the substantial programme of civil engineering works being undertaken at Rosyth to

• New aircraft carriers ahead

     Strong progress is being made by Babcock in the manufacture of one of the key elements of the new aircraft carriers. ?The huge ‘bulbous bow’ is similar in size and appearance to a conventional submarine, and measures a substantial 27 metres long and 9.5 metres maximum height, weighing some 315

• Worlds first ballast water management system

    A milestone has been reached on the signing of the world’s first major Ballast Water Management System (BWMS) contract for larger vessels, signifying a major breakthrough for approaching legislation under the IMO’s Ballast Water Management convention. OceanSaver, one of the… Read at World’s first ballast water management system

• ISSA warns against the dangers arising from the discharge of wastes from ships

    Ship suppliers must put the environment first, and must be more vigilant about the type and content of shipboard waste they dispose of, the head of the worldâ??s ship supply industry has warned. Read at ‘Green’ ISSA warns of the hazards of dumping ships’ waste

• Vizhinjam port: nod for revised proposals

    The government has approved subject to conditions the revised proposals for developing basic facilities and connectivity as part of the first stage of the Vizhinjam Port Project submitted by the director board of Vizhinjam International Seaport Ltd.

• Ocean Saver secures large tankers to

    OceanSaver has signed 18 technical agreements with several major Far East shipyards for the supply of ballast water management systems for crude oil tanker newbuilds. The company also said that several yards in Asia have configured the OceanSaver system for their pump room design. “We have developed a ballast water

• Port of Los Angeles to pay $ 47,000 penalty proposed

     The US Environmental Protection Agency (EPA) is proposing a fine of $47,100 against APM Terminals Pacific Limited for violations of its storm water permit at its Port of Los Angeles facility. According to the EPA, between October 1, 2004 and January 17, 2008, APM Terminals Pacific Limited – one of the

• China to eliminate small iron and steel companies

    The Chinese government yesterday released a draft of a policy outlining plans to eliminate small steel firms with a capacity less than 1 million tons per year. China’s Ministry of Industry and Information Technology said it will also raise environmental standards on steel mills, forcing them to upgrade their equipment

• Anti-Piracy water system started

    US-based SAFE Solutions is launching anti-piracy system today with a demonstration at the Bayonne Drydock New Jersey. The ship Horizon Challenger is being outfitted with the Nemesis 5000: a non-lethal, extremely high pressure water system intended to repel and deter pirates. The company says: “The Nemesis 5000 was designed and

• BALPURE Ballast Water Treatment System Accepted in Coast Guard Technology Evaluation Program

    The S/R American Progress, a 575-ft.-long, 30,000-gross-ton, double-hull U.S. flag tank ship, operated by SeaRiver Maritime, Inc., has been accepted into the United States Coast Guard’s Shipboard Technology Evaluation Program (STEP) to demonstrate the use of and collect data on the effectiveness of the Severn Trent De Nora BALPURE® ballast water treatment system. 

• BALPURE Ballast Water Treatment System Accepted in Coast Guard Technology Evaluation Program

    The S/R American Progress, a 575-ft.-long, 30,000-gross-ton, double-hull U.S. flag tank ship, operated by SeaRiver Maritime, Inc., has been accepted into the United States Coast Guard’s Shipboard Technology Evaluation Program (STEP) to demonstrate the use of and collect data on the effectiveness of the Severn Trent De Nora BALPURE® ballast water treatment system. 

• The African Region is investing $ 43m to reduce pollution from ships in Lagos

    African Cycle Pollution Management Limited has expended not less than $43 million in a determination to reduce ship pollution and cargo residue on the nation’s waters to create cleaner sea for shipping operation in Nigeria. Already two of its four brand new vessels slated to do the jobs have berthed 

• Wärtsilä is the exclusive supplier of bilge water treatment units to Stolt Tankers

    Wärtsilä and Stolt Tankers B.V. have signed an agreement whereby Wärtsilä becomes the exclusive supplier of bilge water treatment units to the Stolt-Nielsen group. The agreement ensures that newbuildings, and retrofits of existing Stolt vessels, will be fitted with Wärtsilä Senitec M-series bilge water treatment units and Wärtsilä Senitec BilgeGuard™ bilge discharge monitoring