WO2006058261A2 - System and method for treatment of ballast water - Google Patents
System and method for treatment of ballast water Download PDFInfo
- Publication number
- WO2006058261A2 WO2006058261A2 PCT/US2005/042828 US2005042828W WO2006058261A2 WO 2006058261 A2 WO2006058261 A2 WO 2006058261A2 US 2005042828 W US2005042828 W US 2005042828W WO 2006058261 A2 WO2006058261 A2 WO 2006058261A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- ballast water
- stream
- water
- ballast
- electrolytic cells
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/467—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction
- C02F1/4672—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction by electrooxydation
- C02F1/4674—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction by electrooxydation with halogen or compound of halogens, e.g. chlorine, bromine
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63J—AUXILIARIES ON VESSELS
- B63J4/00—Arrangements of installations for treating ballast water, waste water, sewage, sludge, or refuse, or for preventing environmental pollution not otherwise provided for
- B63J4/002—Arrangements of installations for treating ballast water, waste water, sewage, sludge, or refuse, or for preventing environmental pollution not otherwise provided for for treating ballast water
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/38—Treatment of water, waste water, or sewage by centrifugal separation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/70—Treatment of water, waste water, or sewage by reduction
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/008—Originating from marine vessels, ships and boats, e.g. bilge water or ballast water
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/29—Chlorine compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/04—Flow arrangements
- C02F2301/043—Treatment of partial or bypass streams
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/04—Disinfection
Definitions
- each hypochlorite electrolytic cell comprises a tubular cell, the tubular cell comprising an outer monopolar tube and an inner bipolar tube.
- the ballast water treatment system further comprises a de-chlorination system to neutralize residual chlorine.
- the de-chlorination system can be positioned downstream from the ballast water tanks.
- the de-chlorination system is a sulfite auxiliary system.
- the sulfite auxiliary system preferably comprises a sulfite tank, a pump, and a sulfite analyzer.
- the chlorine analyzer is positioned downstream from the one or more hypochlorite electrolytic cells.
- the piping is adapted to transport ballast water to one or more ballast tanks.
- the side stream piping is in fluid communication with the piping.
- the side stream piping is adapted to transport a portion of the ballast water to and from the one or more hypochlorite electrolytic cells.
- the booster pump is connected to the side stream piping to increase the pressure of water piped through the ballast treatment system.
- the chlorine analyzer is in fluid communication with the piping.
- the means for venting hydrogen comprises a vent in the ballast tank.
- the ballast water treatment system can further comprise a filter connected to the piping upstream from the entrance to the side stream piping.
- each hypochlorite electrolytic cell comprises a tubular cell, the tubular cell comprising an outer monopolar tube and an inner bipolar tube.
- the method can further comprise the step of increasing the pressure of the treatment stream with a booster pump.
- the ballast water stream is sampled after the treatment stream is reintroduced to determine the chlorine concentration of the ballast water stream.
- the chlorine concentration of the of the ballast water stream may be measured by a chlorine analyzer and the current in the one or more hypochlorite electrolytic cells can be adjusted in response to the measured chlorine concentration to increase or decrease the hypochlorite generated in the treatment stream.
- the residual chlorine in the treated ballast water stream is neutralized with sulfite downstream from the one or more hypochlorite electrolytic cells.
- residual chlorine in the treated ballast water is removed by mixing the ballast water with water having BOD content.
- the water with BOD content is seawater.
- the means for mixing the ballast water with water having BOD content comprises an eductor.
- the means for mixing the ballast water with water having BOD content comprises a pump system adapted to pipe the water having BOD content to a mixing point adjacent to the ballast tank.
- FIG. 1 is a schematic of this invention's system for treating ballast water.
- the present invention provides a system and method for treating ballast water.
- One preferred on-site reaction for creating sodium hypochlorite (NaOCI) is illustrated in the following equation:
- ballast water is pumped on board a marine vessel, a ship or oil rig, for example.
- the water is either seawater with natural salt content or freshwater.
- a side stream of ballast water is separated from the main water stream going to the ballast tanks 170.
- the side stream is drawn from the ballast water tanks 170 after the main ballast water stream has entered the ballast water tanks 170.
- the side stream flows through the side stream piping 100 to one or more hypochlorite electrolytic cells 130 where hypochlorite is generated either from the salt naturally present in the ballast water, if seawater, or from added chloride salts if fresh water.
- the hydroxide ions (OH " ) in the water migrate from the cathodic area and react with Na+ and Cl 2 near the anode to produce sodium hypochlorite (NaOCI) and hydrogen (H 2 ).
- the water then flows into a hydrogen separator 140 where the hydrogen byproduct (H 2 ) of the hypochlorite generation is separated from the side stream.
- the side stream is then reintroduced to the ballast water stream to kill marine organisms and bacteria in the ballast water tanks.
- the hydrogen separator 140 can comprise a hydrocyclone separator.
- the hydrogen separator 140 can also comprise a means for venting hydrogen to the atmosphere 145. Separating hydrogen from the water stream is important, as hydrogen is highly flammable.
- a de-chlorination system 200 can be added to neutralize residual chlorine in the ballast water tank 170 before the ballast water is released from the vessel into the port, ocean, lake, or river.
- the de-chlorination system can be positioned downstream from the ballast tanks.
- the de-chlorination system can comprise a sulfite auxiliary system.
- the sulfite auxiliary system 200 can comprise a sulfite tank 210, a pump 220, and a sulfite analyzer 230.
- the pump of the sulfite auxiliary system 200 is a diaphragm- metering pump. The diaphragm metering pump controls the flow of sulfite used to neutralize residual chlorine.
- the sulfite auxiliary system 200 removes residual chlorine by reacting the chlorine with sulfur dioxide gas, a solution of sodium bisulfite, or sodium sulfate.
- the residual chlorine is consumed in the following reaction:
- seawater eliminates the need to carry chemicals on board the ship, and second, residual chlorine, is rendered innocuous in a controlled environment. Simply releasing the chlorine with the ballast water allows the chlorine to react without any controls. Neutralizing the chlorine on board means chlorine cannot settle in one potentially sensitive area.
- seawater is pumped on board the vessel and through an eductor 310.
- the pressure drop in the eductor 310 draws ballast water from the ballast water tank 320.
- the ballast water 330 mixes with the seawater in the eductor 310. Residual chlorine is immediately rendered innocuous by the seawater.
- the seawater and de-chlorinated ballast water are piped overboard where they can be safely released within the harbor without harming indigenous marine life.
- This treatment stream is piped to hypochlorite electrolytic cells, where a current is applied to the cells to produce hypochlorite within the treatment stream.
- Hydrogen which is flammable, is separated from the treatment stream before the treatment stream is reintroduced into the main ballast water stream.
- the ballast water stream containing the hypochlorite is sampled after the treatment stream is reintroduced the ballast water stream to determine the chlorine concentration of the ballast water stream.
- the treatment stream is removed from the ballast water stream before the stream enters the ballast water tank.
- the treatment stream is drawn off of the ballast water tanks.
- the treatment stream is then treated with hypochlorite and reintroduced into the ballast water stream before the stream enters the ballast water tank.
- the hypochlorite electrolytic cells use natural salt water when the ballast water tanks take on seawater, to generate hypochlorite in the treatment stream.
- a sodium chloride salt can be added to the fresh water to supply the chloride ion.
- the pressure of the treatment stream which drops as the stream enters the side stream piping, is increased with a pump.
- the ballast water stream is filtered prior to entering the treatment stream. Hydrogen can be separated from the treatment stream by a hydrocyclone separator and vented to the atmosphere.
- the ballast water stream is sampled after the treatment stream is reintroduced into the ballast water to determine the chlorine concentration of the ballast water stream. The chlorine concentration of the ballast water stream is measured by a chlorine analyzer.
- the current in the hypochlorite electrolytic cells is adjusted in response to the measured chlorine concentration to increase or decrease the hypochlorite generated in the treatment stream to achieve the proper concentration of hypochlorite in the ballast water tank.
- residual chlorine in the ballast water stream is neutralized with sulfite downstream from the electrolytic cells before the treated ballast water is discharged into a new harbor.
- residual chlorine is rendered innocuous by mixing the ballast water with water having a BOD before releasing the mixture overboard.
- the BOD containing water can comprise seawater.
- the water having BOD content is mixed with the ballast water by an eductor.
- ballast water and water having a BOD content are mixed by pumping BOD containing water into the ballast tank.
- ballast water is treated by drawing a ballast water stream onto a marine vessel, filtering the ballast water stream, and removing a portion of the filtered ballast water stream to form a treatment stream. The pressure of the treatment stream is increased. The treatment stream is then piped to hypochlorite electrolytic cells, where a current is applied to the cells to produce hypochlorite within the treatment stream. Hydrogen is separated from the treatment stream by a means for venting. The treatment stream is reintroduced into the ballast water stream.
- the first test of the sodium hypochlorite generator/filtration treatment system was started on September 3, 2004.
- the experiment included a chlorine/no filtration treatment and chlorine with filtration treatment.
- the target chlorination level was 4 mg/L.
- Initial chlorine levels for the filtered treatment were 3.5 mg/L and 2.95 mg/L without filtration.
- the mesocosms were analyzed for Total Residual Oxidant (Cl 2 mg/L), culturable heterotrophic bacteria, chlorophyll a, and zooplankton at 5, 24, 48, 120, and 240 hours following treatment.
- the goal of the chlorination only treatments was to dose with an initial TRO of 1.0 and 1.5 mg CI 2 /L
- the actual dose averages were 0.94 mg CI 2 /L and 1.61 mg CI 2 /L TRO. Highest percent reduction of TRO occurred with the lowest TRO dose.
- Chlorophyll a is an indicator of phytoplankton biomass.
- the filtration with chlorination treatment showed the greatest initial reduction in chlorophyll a compared with the chlorination only treatments.
- chlorophyll a levels were reduced by 98% for the filtration with chlorination treatment when compared to the control treatment.
- the filtration only treatment showed slight reduction when compared with the control treatment.
- chlorophyll a declined over the duration of the experiment, likely due to the absence of light since all of the mesocosms were covered.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Organic Chemistry (AREA)
- Water Supply & Treatment (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Health & Medical Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Electrochemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Toxicology (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
- Physical Water Treatments (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
MX2007006276A MX2007006276A (en) | 2004-11-29 | 2005-11-23 | System and method for treatment of ballast water. |
BRPI0517127A BRPI0517127B1 (en) | 2004-11-29 | 2005-11-23 | ballast water treatment method |
EP05852235A EP1824792A4 (en) | 2004-11-29 | 2005-11-23 | System and method for treatment of ballast water |
CN2005800409489A CN101068750B (en) | 2004-11-29 | 2005-11-23 | System and method for treatment of ballast water |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US63145304P | 2004-11-29 | 2004-11-29 | |
US60/631,453 | 2004-11-29 | ||
US11/037,642 US7244348B2 (en) | 2004-11-29 | 2005-01-18 | System and method for treatment of ballast water |
US11/037,642 | 2005-01-18 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2006058261A2 true WO2006058261A2 (en) | 2006-06-01 |
WO2006058261A3 WO2006058261A3 (en) | 2006-10-05 |
Family
ID=36498580
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2005/042828 WO2006058261A2 (en) | 2004-11-29 | 2005-11-23 | System and method for treatment of ballast water |
Country Status (7)
Country | Link |
---|---|
US (1) | US7244348B2 (en) |
EP (1) | EP1824792A4 (en) |
KR (2) | KR20100020530A (en) |
CN (1) | CN101068750B (en) |
BR (1) | BRPI0517127B1 (en) |
MX (1) | MX2007006276A (en) |
WO (1) | WO2006058261A2 (en) |
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- 2005-11-23 MX MX2007006276A patent/MX2007006276A/en active IP Right Grant
- 2005-11-23 BR BRPI0517127A patent/BRPI0517127B1/en not_active IP Right Cessation
- 2005-11-23 KR KR1020077015002A patent/KR100987220B1/en active IP Right Grant
- 2005-11-23 WO PCT/US2005/042828 patent/WO2006058261A2/en active Application Filing
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Cited By (15)
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US8147673B2 (en) | 2005-01-18 | 2012-04-03 | Severn Trent De Nora, Llc | System and process for treatment and de-halogenation of ballast water |
US8152989B2 (en) | 2005-01-18 | 2012-04-10 | Severn Trent De Nora, Llc | System and process for treating ballast water |
WO2008153807A3 (en) * | 2007-06-01 | 2009-03-26 | Sev Trent De Nora L L C | System and process for treatment of ballast water |
WO2008153809A3 (en) * | 2007-06-01 | 2009-04-30 | Sev Trent De Nora L L C | Ballast water tank circulation treatment system |
WO2008153807A2 (en) * | 2007-06-01 | 2008-12-18 | Severn Trent De Nora, L.L.C. | System and process for treatment of ballast water |
JP2010528832A (en) * | 2007-06-01 | 2010-08-26 | セバーン トレント デ ノラ,エルエルシー | Ballast tank circulation management system |
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DE102011003187A1 (en) | 2011-01-26 | 2012-07-26 | Evonik Degussa Gmbh | Apparatus and method for reducing the content of hydrogen peroxide and peracetic acid in a water stream |
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JPWO2014064942A1 (en) * | 2012-10-25 | 2016-09-08 | パナソニックIpマネジメント株式会社 | Ballast water treatment method and ballast water treatment apparatus used therefor |
Also Published As
Publication number | Publication date |
---|---|
CN101068750B (en) | 2012-07-04 |
MX2007006276A (en) | 2007-06-14 |
KR20100020530A (en) | 2010-02-22 |
KR100987220B1 (en) | 2010-10-12 |
KR20070093986A (en) | 2007-09-19 |
EP1824792A4 (en) | 2009-09-02 |
US20060113257A1 (en) | 2006-06-01 |
WO2006058261A3 (en) | 2006-10-05 |
BRPI0517127A (en) | 2008-09-30 |
US7244348B2 (en) | 2007-07-17 |
BRPI0517127B1 (en) | 2016-01-19 |
EP1824792A2 (en) | 2007-08-29 |
CN101068750A (en) | 2007-11-07 |
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