CN103979661B - Residual oxidant neutralization device and method used for ballast water discharging process - Google Patents
Residual oxidant neutralization device and method used for ballast water discharging process Download PDFInfo
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- CN103979661B CN103979661B CN201410201450.7A CN201410201450A CN103979661B CN 103979661 B CN103979661 B CN 103979661B CN 201410201450 A CN201410201450 A CN 201410201450A CN 103979661 B CN103979661 B CN 103979661B
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- magnetic valve
- ballast
- water
- chemical tank
- neutralization
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Abstract
The invention relates to a residual oxidant neutralization device and a method used for a ballast water discharging process, and belongs to the technical field of automatic neutralization of ballast water processing by utilization of chemical methods. The device comprises two same neutralization agent boxes. Solvent in the neutralization agent boxes is selected from the ballast water in a main pipeline and is controlled by electromagnetic valves. When the residual chlorine concentration measured by an analysis meter in a main ballast water discharge pipeline is larger than 0.2 mg/L, the device is started automatically, solutions in the two neutralization agent boxes are separately injected into the main ballast water discharge pipeline, and the two neutralization agent boxes are used alternatively during neutralization so that the neutralization is free of interruptions. The device has characteristics of automatic control, small size, high efficiency, simple operation, capability of performing neutralization during the ballast water discharging process, and capability of meeting requirements (namely the TRO concentration is smaller than 0.2 mg/L) of the International Maritime Organization. The device and the method can be widely used in neutralization devices processing ballast water by utilization of an oxidation method.
Description
Technical field
The invention belongs to marine environmental protection applied technical field, relate to a kind of employing chemical process (By Ozone, electrolytic process etc.) processing ballast, specifically refer to a kind of for the residual oxidizing agent neutralising arrangement in discharge of ballast water process.
Background technology
Water ballast refer to mean for control horizontal hectare of boats and ships, vertical hectare, drinking water, stability and stress and the water that is attached on ship and suspended matter.Boats and ships discharge water ballast causes geographic to isolate the main approach that between water body, harmful organism is propagated.Nearly 10,000,000,000 tons of the water ballast that annual global boats and ships carry, the ballast water capacity that a load-carrying 100,000 tons of freighters carry reaches 5-6 ten thousand tons.Compared with the natural marine eco-environment, ballast water for ship is the ecosystem under a kind of particular surroundings, to tame and the biology of surviving often has extremely strong vitality and competitive power through water ballast.They are once be discharged in nature ocean environment, just may produce uncontrollable " avalanche type " breeding, cause great impact, even cause local species extinction, cause a series of environmental disaster to endemic species.
The treatment process of current water ballast mainly contains mechanical treatment process, physical treatment process, method of chemical treatment and some other treatment process.Wherein mechanical means comprises filtration, cyclone separation, dilution, sedimentation and flotation, high flow rate etc.; Physical method comprises heat treated, discharge process, magnetization treatment, ultrasonication, uviolizing process and gamma-rays process etc.; Chemical process mainly utilizes the hot of chlorine or muriate, deoxidation treatment, hydrogen peroxide, ozone, hydroxyl radical free radical etc. to process.According to statistics, be in the great majority by chemical process in the method for International Maritime Organizaton (IMO) certification.
In water ballast chemical process treating processes, the part ion generation chemical reaction in chemical agent and seawater, derives complicated secondary species kind, comprises Cl
2, ClO
-, ClO
2, Br
2, BrO
-, NH
2cl, NH
2the summation of the materials such as Br, wherein with BrO
-account for maximum ratio, the summation of these products is referred to as total residual oxidizing agent (Total Residual Oxidant, TRO).Generally conventional chlorine residue analyser detects the concentration of total residual oxidizing agent (TRO) in the world.According to the requirement of International Maritime Organizaton (IMO), pumping system administration guide (G8 directive/guide) and active substance water ballast approved programme (G9 directive/guide) point out that the maximum permission emission concentration of total residual oxidizing agent (TRO) is 0.2mg/L, during discharge of ballast water after process, if TRO is greater than 0.2mg/L, neutralized system must be used to neutralize, neutralize rear up to standard and allow discharge, in order to avoid work the mischief to ocean environment.
Summary of the invention
In order to solve the problem, the invention provides a kind of neutralising arrangement that automatically can add neutralizing agent, be applicable to all containing water ballast after the process of residual oxidizing agent (TRO).Neutralization reaction is carried out in discharge process, in and medicament directly extract from main line, do not need other interpolation; During work, two identical in and chemical tank be used alternatingly, there will not be disruption.Safely, effectively can reduce the total residual oxidizing agent (TRO) in discharge of ballast water process, reach the emission standard (< 0.2mg/L) of International Maritime Organization (IMO).
The present invention solves the technical scheme that its method adopts:
A residual oxidizing agent neutralising arrangement in discharge of ballast water process, this device comprises seawater conveying loading section, shunts by part processed, neutralising arrangement, volume pump, vacuum breaker and test section,
Seawater conveying loading section comprises discharge of ballast water pipeline, water ballast conveying branch pipeline, impeller pump, under meter and valve, in water ballast conveying branch pipeline access discharge of ballast water pipeline, enters neutralising arrangement pipeline through impeller pump, under meter, valve;
Shunting adopts four magnetic valves by system part: magnetic valve B on the right side of magnetic valve A, entrance, outlet left side magnetic valve C and outlet right side magnetic valve D on the left of entrance, on the left of entrance, on the right side of magnetic valve A and entrance, magnetic valve B is located at the ingress of neutralising arrangement, for controlling the approach axis of water ballast; Outlet left side magnetic valve C and outlet right side magnetic valve D is located at the exit of neutralising arrangement, is used for the outflow after controlling ballast water treatment.
Neutralizing treatment part is divided into left side neutralising arrangement and right side neutralising arrangement, left side neutralising arrangement comprise pressure difference transmitter A, in and chemical tank A, liquid level sensor A and solid feed box A, with chemical tank B, solid feed box B, liquid level sensor B, pressure difference transmitter B during right side neutralising arrangement comprises, solid feed box A is identical with solid feed box B, two-layer dividing plate is arranged at the bottom of solid feed box, the uniform diameter of the first layer is the micropore of 1mm, and during device work, the second layer is opened downwards.
In and chemical tank A with in and the bottom of chemical tank B automatically actuated stirrer is housed.Medicine in solid feed box A and solid feed box B is Sulfothiorine (Na
2s
2o
3) pressed powder, in and chemical tank A and in and chemical tank B in Sulfothiorine (Na
2s
2o
3) concentration of solution is 0.01mol/L.
Volume pump connects magnetic valve C and the magnetic valve D of flow-dividing control part, and vacuum breaker and volume pump connect, and ensures the water ballast one way flow after process.
The chlorine residue analyser B that test section is detected after comprising the chlorine residue analyser A and neutralization detected in discharge, the water ballast after the real-time check processing of chlorine residue analyser A, chlorine residue analyser B detects the water ballast after neutralization in real time.
Device working process of the present invention is as follows:
In water ballast conveying branch pipeline access discharge of ballast water pipeline, the seawater directly in extraction discharge pipe is as raw material; The water ballast extracted is through impeller pump, under meter, valve access to plant pipeline;
By the direction of water ballast in magnetic valve B pilot piping on the right side of magnetic valve A on the left of entrance and entrance, in startup and chemical tank A or neutralization in and chemical tank B;
With the liquid level of chemical tank A during pressure difference transmitter A and liquid level sensor A monitors, with the liquid level of chemical tank B during pressure difference transmitter B and liquid level sensor B monitors, when liquid level arrives qualifying bit, solid feed box A or solid feed box B lower plate are opened, and throw in pressed powder (Na
2s
2o
3powder), in chemical tank, the stirrer of bottom starts, and stirs 1min.
When discharging after ballast water treatment, chlorine residue analyser A on water ballast supervisor detects in real time, when the residual chlorine concentration in signal piping is greater than 0.2mg/L, opens outlet left side magnetic valve C or outlet right side magnetic valve D, volume pump starts, the Sulfothiorine (Na prepared
2s
2o
3) solution by vacuum breaker inject main line with discharge water ballast fully mix, chlorine residue analyser B to neutralization after water ballast detect, detect rear discharge up to standard, not up to standard, reload in auto levelizer and neutralize.
Benefit of the present invention is: this neutralising arrangement volume is little, efficiency is high, simple to operate; Install in discharge pipe, do not need discharge of ballast water pipeline in change boats and ships.Be used alternatingly with chemical tank in two of neutralized system, effectively prevent neutralizing agent from occurring the situation of interrupting when making up a prescription, guaranteeing that N-process is uninterrupted.The speed of response of neutralizing agent and water ballast is exceedingly fast, and is about 1s ~ 2s, to realize in discharge of ballast water process and and to meet the requirement (TRO concentration is less than 0.2mg/L) of International Maritime Organizaton.The present invention can be widely used in the N-process of chemical Treatment water ballast.
Accompanying drawing explanation
Accompanying drawing is the present invention is in discharge of ballast water process, with the schematic diagram of TRO in pipeline in this device.
In figure: 1 water ballast conveying branch pipeline; 2 impeller pumps; 3 under meters; 4 valves; 5 pressure difference transmitter A; With chemical tank A in 6; 7 liquid level sensor A; 8 solid feed box A; Magnetic valve A on the left of 9-1 entrance; Magnetic valve B on the right side of 9-2 entrance; 9-3 outlet left side magnetic valve C; 9-4 outlet right side magnetic valve D; With chemical tank B, 11 solid feed box B in 10; 12 liquid level sensor B; 13 pressure difference transmitter B; 14 volume pumps; Chlorine residue analyser A and A detected in 15 discharges; 16 vacuum breaker; With the chlorine residue analyser B of rear detection in 17; 18 discharge of ballast water pipelines.
Embodiment
Embodiments of the invention are described in detail below in conjunction with technical scheme and accompanying drawing.
The present invention be a kind of when discharge of ballast water in and the device of total residual oxidizing agent (TRO) in water ballast, this device realizes like this, when water ballast discharges at main line 18, chlorine residue analyser A15 in system powers, pilot lamp brightens, with chemical tank A6 simultaneously in starting, open magnetic valve 9A, in and chemical tank A6 in solvent extract from main line 18, through water ballast conveying branch pipeline 1, impeller pump 2, under meter 3, valve 4, with the liquid level of chemical tank A6 during pressure difference transmitter A5 and liquid level sensor A7 monitors, when liquid level arrives qualifying bit, solid feed box A8 lower plate is opened, throw in solid sulfur sodium thiosulfate powder (Na
2s
2o
3), in and chemical tank A6 bottom stirrer start, stir 1min, the Sulfothiorine (Na of preparation
2s
2o
3) strength of solution is 0.01mol/L, the injection of volume pump 14 waited for by the neutralizing agent after preparing.During discharge of ballast water, chlorine residue analyser A15 detects the water ballast after process, when the display numerical value of chlorine residue analyser A15 is higher than 0.2mg/L, its concentration signal is neutralized chemical tank A6 corresponding volume pump 14 controller and receives, open magnetic valve 9-3, according to detect chlorine residue analyser concentration, controller regulates volume pump 14 rotating speed automatically, thus control in and medicament (Sulfothiorine (Na
2s
2o
3) solution) and with the proportioning flow of main line water ballast, realize the total residual oxidizing agent (TRO) in quantitative neutralization discharge water ballast.When in and chemical tank A6 liquid level lower than set(ting)value time, differential pressure transmitter A5 by signal transmission to liquid level sensor A7, when liquid level sensor A7 display reaches the liquid level needing filling medicament, open magnetic valve 9-2, with the liquid level of chemical tank B10 in monitoring with chemical tank B10, pressure difference transmitter B13 and liquid level sensor B12 during device starts automatically, step is the same, when in and solution in chemical tank A6 arrives lowest order time, open magnetic valve 9-4, in using and chemical tank B10.So, in and chemical tank A6 with in and chemical tank B10 be used alternatingly, there will not be disruption.Water ballast after neutralization along with tubes rows is put in ocean, as below standard, reload in auto levelizer and neutralizes after chlorine residue analyser B17 detection is up to standard.
This neutralising arrangement volume is little, efficiency is high, simple to operate; Install in discharge pipe, do not need discharge of ballast water pipeline in change boats and ships.Be used alternatingly with chemical tank in two of neutralising arrangement, effectively prevent neutralizing agent from occurring the situation of interrupting when making up a prescription, guaranteeing that N-process is uninterrupted.The speed of response of neutralizing agent and water ballast is exceedingly fast, and is about 1s ~ 2s, to realize in discharge of ballast water process and and to meet the requirement (TRO concentration is less than 0.2mg/L) of International Maritime Organizaton.The present invention can be widely used in chemical Treatment water ballast and discharge process.
Claims (4)
1. for the residual oxidizing agent neutralising arrangement in discharge of ballast water process, it is characterized in that, this device comprises seawater conveying loading section, flow-dividing control part, neutralising arrangement, volume pump, vacuum breaker and test section,
Seawater conveying loading section comprises discharge of ballast water pipeline, water ballast conveying branch pipeline, impeller pump, under meter and valve, in water ballast conveying branch pipeline access discharge of ballast water pipeline, enters neutralising arrangement pipeline through impeller pump, under meter, valve;
Flow-dividing control part adopts four magnetic valves: magnetic valve B on the right side of magnetic valve A, entrance, outlet left side magnetic valve C and outlet right side magnetic valve D on the left of entrance, on the left of entrance, on the right side of magnetic valve A and entrance, magnetic valve B is located at the ingress of neutralising arrangement, for controlling the approach axis of water ballast; Outlet left side magnetic valve C and outlet right side magnetic valve D is located at the exit of neutralising arrangement, is used for the outflow after controlling ballast water treatment;
Neutralising arrangement is divided into left side neutralising arrangement and right side neutralising arrangement, left side neutralising arrangement comprise pressure difference transmitter A, in and chemical tank A, liquid level sensor A and solid feed box A, during right side neutralising arrangement comprises and chemical tank B, solid feed box B, liquid level sensor B, pressure difference transmitter B;
Volume pump connects magnetic valve C and the magnetic valve D of flow-dividing control part, and vacuum breaker and volume pump connect, and ensures the neutralizating medicine agent solution one way flow prepared;
Chlorine residue analyser A detects the discharge water ballast without neutralization in water ballast supervisor in real time, and chlorine residue analyser B detects the water ballast after neutralization in real time.
2. according to claim 1 for the residual oxidizing agent neutralising arrangement in discharge of ballast water process, it is characterized in that, solid feed box A is identical with solid feed box B, two-layer dividing plate is arranged at the bottom of solid feed box, the uniform diameter of the first layer is the micropore of 1mm, during device work, the second layer is opened downwards; Medicine in solid feed box A and solid feed box B is Sulfothiorine pressed powder, in and chemical tank A and in and in chemical tank B the concentration of hypo solution be 0.01mol/L.
3. according to claim 1 and 2ly to it is characterized in that for the residual oxidizing agent neutralising arrangement in discharge of ballast water process, in and chemical tank A with in and the bottom of chemical tank B automatically actuated stirrer is housed.
4. for the residual oxidizing agent neutralization method in discharge of ballast water process, it is characterized in that, the device that the method adopts comprises seawater conveying loading section, flow-dividing control part, neutralising arrangement, volume pump, vacuum breaker and test section, seawater conveying loading section comprises discharge of ballast water pipeline, water ballast conveying branch pipeline, impeller pump, under meter and valve, in water ballast conveying branch pipeline access discharge of ballast water pipeline, through impeller pump, under meter, valve access to plant pipeline; Flow-dividing control part adopts four magnetic valves, magnetic valve B on the right side of magnetic valve A, entrance, outlet left side magnetic valve C and outlet right side magnetic valve D on the left of entrance, on the left of entrance, on the right side of magnetic valve A and entrance, magnetic valve B is located at the ingress of neutralising arrangement, for controlling the approach axis of water ballast; Outlet left side magnetic valve C and outlet right side magnetic valve D is located at the exit of neutralising arrangement, is used for the outflow after controlling ballast water treatment; Neutralising arrangement is divided into left side neutralising arrangement and right side neutralising arrangement, left side neutralising arrangement comprise pressure difference transmitter A, in and chemical tank A, liquid level sensor A, solid feed box A, with chemical tank B, solid feed box B, liquid level sensor B, pressure difference transmitter B during right side neutralising arrangement comprises, solid feed box A is identical with solid feed box B, two-layer dividing plate is arranged at bottom, the uniform diameter of the first layer is the micropore of 1mm, and during device work, the second layer is opened downwards; Medicine in solid feed box A and solid feed box B is Sulfothiorine pressed powder, in and chemical tank A and in and in chemical tank B the concentration of hypo solution be 0.01mol/L; In and chemical tank A with in and chemical tank B, automatically actuated stirrer is equipped with in bottom; Volume pump connects magnetic valve C and the magnetic valve D of flow-dividing control part, and vacuum breaker and volume pump connect, and ensures the neutralizating medicine agent solution one way flow prepared; Chlorine residue analyser A detects the discharge water ballast without neutralization in water ballast supervisor in real time, and chlorine residue analyser B detects the water ballast after neutralization in real time;
Detailed process is as follows:
In water ballast conveying branch pipeline access discharge of ballast water pipeline, the seawater directly in extraction discharge pipe is as raw material; The water ballast extracted is through impeller pump, under meter, valve access to plant pipeline; By the direction of water ballast in magnetic valve B pilot piping on the right side of magnetic valve A on the left of entrance and entrance, in startup and chemical tank A or neutralization in and chemical tank B; With the liquid level of chemical tank A during pressure difference transmitter A and liquid level sensor A monitors, with the liquid level of chemical tank B during pressure difference transmitter B and liquid level sensor B monitors, when liquid level arrives qualifying bit, solid feed box A or solid feed box B lower plate are opened, and throw in Na
2s
2o
3pressed powder, in chemical tank, the stirrer of bottom starts, and stirs 1min; When discharging after ballast water treatment, chlorine residue analyser A on water ballast supervisor detects in real time, when the residual chlorine concentration in signal piping is greater than 0.2mg/L, open outlet left side magnetic valve C and outlet right side magnetic valve D, volume pump starts, and the hypo solution prepared injects main line by vacuum breaker and fully mixes with discharge water ballast, and chlorine residue analyser B detects water ballast after neutralization, detect rear discharge up to standard, not up to standard, reload in auto levelizer and neutralize.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410201450.7A CN103979661B (en) | 2014-05-13 | 2014-05-13 | Residual oxidant neutralization device and method used for ballast water discharging process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410201450.7A CN103979661B (en) | 2014-05-13 | 2014-05-13 | Residual oxidant neutralization device and method used for ballast water discharging process |
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| Publication Number | Publication Date |
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| CN103979661A CN103979661A (en) | 2014-08-13 |
| CN103979661B true CN103979661B (en) | 2015-06-24 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106044990B (en) * | 2016-05-13 | 2022-09-30 | 上海贝威科技有限公司 | Device for monitoring total residual oxidant in ship ballast water |
| CN106946325A (en) * | 2017-03-31 | 2017-07-14 | 厦门大学 | The method and system of hydroxyl radical free radical advanced oxidation prevention and control ocean invasive plants |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7244348B2 (en) * | 2004-11-29 | 2007-07-17 | Severn Trent De Nora, Llc | System and method for treatment of ballast water |
| CN101918326A (en) * | 2007-08-15 | 2010-12-15 | 西门子水处理技术公司 | Ballast water treatment system and method |
| KR101064911B1 (en) * | 2008-05-07 | 2011-09-16 | (주) 테크로스 | Treatment System for Ballast Water |
| CN101327994A (en) * | 2008-07-17 | 2008-12-24 | 大连海事大学 | Method for ozone treatment of cruising ballast water in discharge process |
| CN201400589Y (en) * | 2009-04-09 | 2010-02-10 | 无锡蓝天电子有限公司 | Improved special ocean vessel ballast water treatment system |
| CN101531410B (en) * | 2009-04-09 | 2011-09-14 | 无锡蓝天电子有限公司 | Ocean vessel ballast water processing method and special system using same |
| CN102173485B (en) * | 2010-12-14 | 2012-07-25 | 大连海事大学 | Method for treating ship ballast water by injecting oxygen active particles in transmission pipe |
| CN203845852U (en) * | 2014-05-13 | 2014-09-24 | 大连海事大学 | Residual oxidant neutralizing device for ballast water draining process |
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