Schiffstechnik | Ship Technology Ballast Water Treatment Systems – Survey 2018 Manufacturer Product name Approval status (type appr.) Ex. Appr. AMS (USCG) USCG Approval status (full type approval) Technology / Process steps Solid-liquid separation Disinfection chemical physical Options Ahead Ocean Technology Ahead-BMWS 2015 yes filtration, UV Alfa Laval PureBallast 3.1 2015 yes yes yes 2015 yes 2016 filtration (basket) N/A UV(MP) Aqua Engineering Company Ltd. AquaStar Mac Gregor 2012 yes yes Jun 14 electrolytic system Azienda Chimica Genovese (ACG) Ecolcell no yes electrolytic system NaOCl (from seawater) Bawat Bawat BWMS 2015 yes yes Feb 15 exp. Q4 / 18 de-oxygenation and pasteurisation Cathelco Cathelco Ballast Water Management 2014 yes, exp. Q1 /18 (Rev. G8) yes Nov 14 exp. Q1 / 18 20 / 25 μm self cleaning filter N/A UV (MP) tank stripping, full integration to existing ships ballast control system Coldharbour Marine Limited Coldharbour Marine GLD BWTS* LR / UK MCA approval Feb / 2015 not applicable yes Jun 15 in progress none, no filters treatment by inert gas COSCO Shipbuilding Industry Company Blue Ocean Shield 2011 yes yes Nov 13 filtration no UV Desmi Ocean Guard RayClean CompactClean 2014 no yes no yes N/A under approval 30 micron autom. 20 μm no UV (LP) UV (MP) Ecochlor Inc. Ecochlor BWTS 2011 yes N/A yes Oct 13 2017 yes filtration ClO2 N/A N/A Ecospec Marine Technology Semb-Eco UV/ LED-UV no Elite Marine Ballast Water Treatment System Corp Seascape yes yes Oct 14 filtration (Screen 40 μm) UV (Ultrasound) Envirotech and Consultancy Pte Ltd. BlueWorld 2011 yes no no electrode is used Erma First ESK Engineering Solutions Erma First 2012 yes yes Oct 13, rev. Mar 15 yes Oct 2017 filtration and cyclonic separation system Evoqua Water Technologies SeaCURE BWMS 2014 yes yes yes Jul 14, rev. Oct 14 in progress filtration (screen) EC (only 1 % vol) NE Cooling Water Treatment (Anti-Fouling) Hamworthy Greenship see Wärtsilä Hanla IMS EcoGuardian yes yes yes in progress Headway Technology Co. Ltd. OceanGuard 2012 yes yes Sep 13 indirect electrolysis filtration EA /AO no Hitachi ClearBallast 2010 yes filtration, flocculation 56 HANSA International Maritime Journal – 155. Jahrgang – 2018 – Nr. 3
Schiffstechnik | Ship Technology Capacity on module / skid* (m 3 /h) Investment € per m 3 /h Power requ. on average (kWh/1000 m³) (SW = sea water, FW = fresh water) Chemical / Neutralizer used Weight (kg per m 3 /h) Retention time (hrs) Effluent analysis Pressure drop (bar) Lifecycle main component Website aheadocean.en.ec21.com / 32–3,000 (larger by mult.) N/A SW = 51 kW (min) FW = 101 kW (min) N/A 2.0 IMO: none USCG: 72 hrs optional 0.3–0.8 3,000 hrs alfalaval.com / pureballast 200–5,000 0–0.2 aquaeng.kr acgmarine.com 600 0,1 kW none none none none 10 years www.bawat.com / shipbwms / ship-bwms / 35–1,500, depending on system version 136 kW / Hr for SW/ FW dep. on size, Skid mounted A10 (1000m3 / hr) = 7KG per m3 / hr 48 hrs UV transmission UVT typ. 0.8 reactor >5 y. filter 1.7 kg none N/A max. 0.6 UV lamps: 12,000 hrs desmioceanguard.com 250–16,200 N/A typically 5–15 kW per 1,000m3 max. 75 kW chlorine dioxide as the biocide. No neutralization required no retention time CIO2 ensure MADC 0.2 mg / l none 0.4 N/A ecochlor.com ecospec.com 150–5,000 10–20 kW per 100 m3 0.4–0.6 bwts.cn blueseas.com.sg 50–3,000 1.8 kW per 100 m3 0.5 5,000–6,000 hrs ermafirst.com > 4,000 (larger by mult.) 50 (SW) -75 (only 1 x / in) 3–6 ppm in-situ NE max. 0.005 kg / m3 3.2 24 yes 0.35 ship’s lifetime evoqua.com / seacure 100–8,000 41 kW (SW) 110 kW (FW) required 0.1 hanlaims.com 50–9,000 12 0.4–1.3 3-5 yes 0.5–0.7 ship’s lifetime headwaytech.com 1,000–3,000+ N/A hitachi.com HANSA International Maritime Journal – 155. Jahrgang – 2018 – Nr. 3 57
