CN104174270A - Method for removing volatile organic contaminants and/or pathogenic microorganisms - Google Patents
Method for removing volatile organic contaminants and/or pathogenic microorganisms Download PDFInfo
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- CN104174270A CN104174270A CN201410376957.6A CN201410376957A CN104174270A CN 104174270 A CN104174270 A CN 104174270A CN 201410376957 A CN201410376957 A CN 201410376957A CN 104174270 A CN104174270 A CN 104174270A
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Abstract
The invention provides a method for removing volatile organic contaminants and/or pathogenic microorganisms in a closed space. The method comprises the steps of (a) detecting the concentration; (b) selecting the dosage of a chlorine dioxide water solution, a chlorine dioxide solid or a chlorine dioxide gel according to the measured concentration value; (c) putting the chlorine dioxide water solution, the chlorine dioxide solid or the chlorine dioxide gel into the closed space; (d) maintaining the space to be closed for 1-96 hours, wherein 24-96 hours are preferably selected, and 24-72 hours are more preferably selected; (e) detecting the concentration again, and comparing the detected concentration value with the specified reference concentration value, wherein if the detected concentration value is higher than the specified reference concentration value, the steps (b), (c), (d) and (e) are repeatedly executed. The invention also provides the usage of the chlorine dioxide water solution for removing the volatile organic contaminants and/or pathogenic microorganisms in the closed space.
Description
Technical field
The present invention relates to remove the method for volatile organic pollution and/or invasive organism.
Background technology
In the mankind of non-open type or the activity space of animal, for example, at Indoor environment, in motor vehicle cabin, in aircraft cabin etc. in, because the use of construction material, adhesive, ornament materials and furniture product etc., conventionally there is volatility organic contamination source, for example, formaldehyde, benzene, dimethylbenzene etc.Conventionally there is serious harm to the body system of the mankind or animal in these volatile organic contaminants, and is conventionally considered to carcinogen.
The existing processing mode of polluting for volatile material has the pollution-free or oligosaprobic ornament materials of replacing conventionally, but this can raise the cost greatly, and under prior art level, use containing some pollutant, be difficult to accomplish as the material of formaldehyde, for example, because formaldehyde is almost inevitable as good fixative in adhesive, decoration and furniture field.
Or, can remove and pollute operation the space of containing these volatility organic contamination sources.
A kind of simple means is to ventilate, but drafting efficiency is low, and the time is long, and effect not obvious.
Another means be by with oxidant, for example slowly-releasing oxidant by these volatility organic contamination sources, as formaldehyde, benzene etc. are oxidized to carbon dioxide and water.For example in Chinese invention patent application publication number CN101898078A and CN1463774A disclosed method by pollution or the peculiar smell such as such as formaldehyde that strong oxidizer is produced to decontamination chamber interior decoration in slow-release indoor, spraying or film forming as chlorine dioxide, potassium permanganate etc.But these methods are only to require qualitatively to provide strong oxidizer and for example formaldehyde to react, but can not provide the oxidant content of appropriate amount for each space, as the actual conditions in indoor or car, thereby may cause the effect of formaldehyde that goes that must not reach suitable by quantity not sufficient on the one hand, may too much cause useful parts and the infringement health in excessive strong oxidizer oxidation space and cause waste by consumption on the other hand.And these methods can not, in removal organic contamination source, as after removing formaldehyde and/or going benzene operation, prevent the concentration bounce-back of for example formaldehyde and/or benzene.
In addition, these strong oxidizers are prepared because the reason of security is all unfavorable for scene in the prior art.Therefore also wishing to remove in the operation process of volatile organic pollution can be safer, on-the-spot preparation aqueous solution of chlorine dioxide simply.
Summary of the invention
Therefore, the present invention is directed to above-mentioned existing issue, the volatile organic pollution of a kind of removal in can enclosure space and/or the method for invasive organism be provided, comprising:
(a) detect described volatile organic pollution in can enclosure space and/or the concentration of invasive organism;
(b) concentration value of the volatile organic pollution based on measured and/or invasive organism is selected aqueous solution of chlorine dioxide, chlorine dioxide solid or chlorine dioxide gel amount;
(c) described aqueous solution of chlorine dioxide, chlorine dioxide solid or chlorine dioxide gel are placed described can enclosure space in;
(d) make described space keep sealing 1-96 hour, preferably 24-96 hour, more preferably 24-72 hour, 48-72 hour most preferably;
(e) detect again described predetermined volatile pollutant in can enclosure space and/or the concentration of invasive organism, and by the concentration value detecting again and the concentration reference value comparison of regulation;
Wherein, if the volatile pollutant detecting again and/or the concentration value of invasive organism higher than the concentration reference value of described regulation, repeated execution of steps (b) is to (e).
According to one embodiment of present invention, described can enclosure space be the interior space of interior space or building.Preferably, described can have 0.1m by enclosure space
20.1m above,
2-20000m
2floor space, preferably there is 1m
2-2000m
2floor space, most preferably there is 1m
2-200m
2floor space.
According to a preferred embodiment, according to floor space that can enclosure space, be described in table 1 below and select aqueous solution of chlorine dioxide consumption according to content of formaldehyde, and for being more than or equal to 1mg/m
3content of formaldehyde, its every increase by 0.3, aqueous solution of chlorine dioxide consumption increase 10ml/m
2, for example, for 1-1.3mg/m
3content of formaldehyde, the aqueous solution of chlorine dioxide consumption of selection is 90ml/m
2.Wherein aqueous solution of chlorine dioxide concentration is about 20ppm to about 30000ppm, preferably 1000ppm to 25000ppm, about 5000ppm be to about 20000ppm, 10000ppm to 20000ppm most preferably.Because floor space is varied, this embodiment is especially preferred for Indoor environment and removes volatile organic pollution and/or invasive organism, so that operating personnel can determine rapidly aqueous solution of chlorine dioxide consumption according to the floor space of Indoor environment, provide more standardized work flow.Wherein, the content of formaldehyde value range as described in this embodiment and herein (as being suitable for) is containing lower limit end points, not containing upper limit end points.
Table 1
Preferably, can select aqueous solution of chlorine dioxide consumption according to upper table according to benzene content.Or, can select aqueous solution of chlorine dioxide consumption according to upper table according to the mean value of formaldehyde and benzene content or both high values.
According to a preferred embodiment, especially for for interior space can enclosure space, particularly for just rolling off the production line and not yet paying the interior space of user's carrying motor vehicle, be described in table 2 below and select aqueous solution of chlorine dioxide consumption according to content of formaldehyde, and for being more than or equal to 6mg/m
3content of formaldehyde, its every increase by 0.3, aqueous solution of chlorine dioxide consumption increase 10ml/m
2, for example, for 1-1.3mg/m
3content of formaldehyde, the aqueous solution of chlorine dioxide consumption of selection is 90ml/m
2.Wherein aqueous solution of chlorine dioxide concentration is that about 5000ppm is to about 20000ppm.Wherein, the content of formaldehyde value range as described in this embodiment and herein (as being suitable for) is containing lower limit end points, not containing upper limit end points.
Table 2
Because for same types of vehicles, interior space approaches, but for the difference of manufacturing flow process, the content of formaldehyde difference of interior space is larger, therefore as previously mentioned this embodiment be especially preferred for removing in car, preferably in passenger carrying vehicle, preferably according to volatile organic pollution and/or invasive organism in the defined M1 class of GB/T 15089 vehicle (, seating capacity be no more than the passenger carrying vehicle of nine) car, so that operating personnel can select suitable aqueous solution of chlorine dioxide umber according to content of formaldehyde in car.For according to the defined M2 class of GB/T 15089 or M3 class vehicle, can according to the ratio of actual seating capacity and 9 (seat) (preferably round, as by round or press round) select corresponding aqueous solution of chlorine dioxide consumption.Described embodiment of the present invention provides more standardized work flow.
Equally, preferably, can select aqueous solution of chlorine dioxide consumption according to upper table according to benzene content.Or, can select aqueous solution of chlorine dioxide consumption according to upper table according to the mean value of formaldehyde and benzene content or both high values.
According to one embodiment of present invention, described volatile organic matter selects the group that free formaldehyde, acetaldehyde, methacrylaldehyde, benzene, dimethylbenzene, ethylbenzene, styrene and any combination thereof form.Preferably, described volatile organic matter is formaldehyde and/or benzene.More preferably, the concentration reference value of the regulation of described formaldehyde and/or benzene can be less than or equal to 0.2mg/m
3, be preferably and be less than or equal to 0.11mg/m
3, be more preferably less than or equal to 0.1mg/m
3, be most preferably chosen as 0.1mg/m
3or 0.09mg/m
3.In addition, the concentration reference value of the regulation of toluene can be less than or equal to 1.10mg/m
3, be preferably less than 1.00mg/m
3, 1.00mg/m more preferably
3; The concentration reference value of the regulation of dimethylbenzene can be less than or equal to 1.50mg/m
3, be preferably and be less than or equal to 1.30mg/m
3, 1.30mg/m more preferably
3; The normal concentration reference value of ethylbenzene can be less than or equal to 1.50mg/m
3, be preferably less than or equal to 1.30mg/m
3, 1.30mg/m more preferably
3; Cinnamic normal concentration reference value can be less than or equal to 0.26mg/m
3, be preferably less than or equal to 0.25mg/m
3, 0.25mg/m more preferably
3; The normal concentration reference value of acetaldehyde can be less than or equal to 0.05, preferably be less than or equal to 0.04mg/m
3, 0.04mg/m more preferably
3; The normal concentration reference value of methacrylaldehyde can be less than or equal to 0.05mg/m
3, be preferably less than or equal to 0.04mg/m
3, 0.04mg/m more preferably
3.
According to one embodiment of present invention, in described step (a) before, also comprise guarantee described can enclosure space humidity to be less than or equal to 70%, be preferably less than or equal to 60%, the step of the humidity of 20%-50% more preferably, preferably this guarantee the step of humidity comprise detection can enclosure space in humidity and/or can enclosure space dehumidifying to this.
According to one embodiment of present invention, described aqueous solution of chlorine dioxide, solid or gel have and are less than or equal to 8 and be more than or equal to 3, be preferably less than or equal to 7 and be more than or equal to 4, be preferably less than or equal to 7 and be more than or equal to 5, be most preferably less than or equal to 6 and be more than or equal to 5 pH value.By controlling according to the pH value of aqueous solution of chlorine dioxide of the present invention, what the method according to this invention was particularly useful for such as Che Nei or the interior space etc. can the VOC of enclosure space and/or the removal of invasive organism, and avoid simultaneously or significantly reduce the possibility of adversely damaging this exposed metal surface in can enclosure space, this is particularly favourable.Preferably, by adding with the acid of chlorine dioxide chemical compatibility to control the pH value of aqueous solution of chlorine dioxide.
According to one embodiment of present invention, in described step (a) before, comprise guarantee described can enclosure space in temperature be approximately 5 DEG C-80 DEG C, approximately 10 DEG C-80 DEG C, preferably approximately 20 DEG C-70 DEG C, more preferably approximately 25 DEG C-55 DEG C, most preferably be approximately 30 DEG C-55 DEG C, preferably this guarantee the step of temperature comprise detection can enclosure space in temperature step and/or to heating by enclosure space, especially preferably when lower than 5 DEG C, be heated to above 5 DEG C, higher than 10 DEG C, higher than 15 DEG C, most preferably higher than 20 DEG C.
According to one embodiment of present invention, described step (b) comprising: at least a composition aqueous solution of chlorine dioxide, chlorine dioxide solid or the chlorine dioxide gel with given volume amount is provided; And the concentration value of organic pollution based on measured is selected the umber of described aqueous solution of chlorine dioxide, chlorine dioxide solid or chlorine dioxide gel.
According to one embodiment of present invention, the method also comprises that the container by having at least two spaces that can isolate each other prepares the step of described aqueous solution of chlorine dioxide depressurization; Wherein, these at least two spaces hold respectively described aqueous solution of chlorine dioxide material component, by the sealing mixing aqueous solution of chlorine dioxide material component between at least two spaces described in removing, to prepare described aqueous solution of chlorine dioxide.
According to one embodiment of present invention, described container comprises that primary tank body, the enclosing cover with container body mouth are connected with described enclosing cover screw thread or bayonet socket and are contained at least one the second container body in described primary tank body, wherein, described enclosing cover is threaded io described primary tank body mouth, and is formed with respectively ratchet and pawl on described second container body and described primary tank body.Wherein, described primary tank body holds the first material component, is preferably the first solution of sodium chlorite; Described second container holds the second material component, is preferably acid, is more preferably selected from citric acid and hydrochloric acid at least one the second solution.Described preparation process comprises that screwing described enclosing cover interacts so that described second container body and described enclosing cover depart from the ratchet and pawl that makes to be positioned on described second container body and described primary tank body, thereby allows described the first and second raw material components from being mixed to form described ClO 2 solution.
According to one embodiment of present invention, after the described aqueous solution of chlorine dioxide of preparation, be also included in the step of the opening installation slowly-releasing part of container.
According to one embodiment of present invention, the method also comprises at least one part in can enclosure space or surface, especially local volatile organic pollution, as the step of the relatively high part of formaldehyde or surface sprinkling aqueous solution of chlorine dioxide.These parts for example comprise the part that is applied with adhesive.
According to another aspect of the present invention, aqueous solution of chlorine dioxide, chlorine dioxide solid or chlorine dioxide gel be for removing volatile organic pollution in can enclosure space and/or a purposes for invasive organism, and wherein said aqueous solution of chlorine dioxide, chlorine dioxide solid or chlorine dioxide gel have and be less than or equal to 8 and be more than or equal to 3, be preferably less than or equal to 7 and be more than or equal to 4, be preferably less than or equal to 7 and be more than or equal to 5 pH value.By controlling according to the pH value of aqueous solution of chlorine dioxide of the present invention, chlorine dioxide solid or chlorine dioxide gel, the method according to this invention is particularly useful for such as Che Nei or the interior space etc. can the VOC of enclosure space and/or the removal of invasive organism, and significantly reduces simultaneously or avoid adversely damaging the possibility on this exposed metal surface in can enclosure space.
According to one embodiment of present invention, by adding with the acid of chlorine dioxide chemical compatibility to control the pH value of aqueous solution of chlorine dioxide.
More preferably, using aqueous solution of chlorine dioxide, solid or the gel of high concentration in this purposes, be preferably approximately 5000 to about 40000ppm, be more preferably approximately 5000 to about 20000ppm, is most preferably about 5000ppm, about 1000ppm or about 20000ppm.
The method according to this invention, provides a kind of " as required " to remove volatile organic pollution in can enclosure space, has especially removed the theory of formaldehyde and/or benzo pollutants.The method according to this invention for example, still can provide standardized work for different occasions, different floor space (or volume) and different pollutant levels, effectively improve operating efficiency, and can also effectively remove volatile organic pollution, especially formaldehyde and/or benzo pollutants in these different occasions.In addition, the method according to this invention can also effectively be removed and/or invasive organism.
Further feature of the present invention and an advantage part will manifest after reading the present invention, and another part is below further describing.
Brief description of the drawings
Below, describe by reference to the accompanying drawings embodiments of the invention in detail, wherein:
Fig. 1 shows an embodiment for " certainly mixing " container of the inventive method;
Fig. 2 shows according to the flow chart of volatile organic matter and/or invasive organism in removal motor vehicles of the present invention.
Detailed description of the invention
Below in conjunction with the specific embodiment of the present invention, the present invention will be further described, but protection scope of the present invention is not limited to this detailed description of the invention.
Fig. 1 has shown an embodiment for " certainly mixing " container of the inventive method.As shown in the figure, this container comprises primary tank body 1, enclosing cover 2, is positioned at the second container 3 of primary tank body 1 inside.Enclosing cover 2 is double wall, be respectively and cover inwall 12, cover outer wall 11, second container 3 tops make second container 3 be connected with enclosing cover 2 by screw thread MI or by unshowned bayonet socket with lid inwall 12 as shown in the figure, position below second container 3 outer wall threads arranges ratchet 5, mouth neck portion inwall and ratchet 5 opposite positions at primary tank body 1 arrange ratchet 4, 1 mouthful of outside of primary tank body is designed with screw thread MII, make the cover outer wall 11 of primary tank body 1 and enclosing cover 2, second container 3 passes through respectively screw thread M I with the lid inwall 12 of enclosing cover 2, MII connects, lid inwall 12 lower surfaces arrange an interior inclined-plane 13, the position that second container 3 matches with it arranges an outer inclined-plane 14, in the time that lid inwall 12 is connected by screw thread M I with second container 3,13Yu Wai inclined-plane 14, interior inclined-plane is pressed and is strengthened its sealing by inclined-plane.
When installation, after enclosing cover 2 is threaded connection with the second container 3 that the second raw material is housed, the assembly of enclosing cover 2 and second container 3 is inserted in the lump in 1 mouthful of the primary tank body that has been loaded with liquid the first raw material, screw immediately enclosing cover, at this moment the assembly of enclosing cover 2 and second container 3 is closely connected with primary tank body 1, the lid interior inclined-plane 13 of inwall 12 and the outer inclined-plane 14 of second container outer wall press mutually, the ratchet 4 of simultaneously realizing 1 mouthful of inwall of ratchet 5 and primary tank body of second container 3 closely engages, and completes the assembling of whole " certainly mixing " container.
When use, enclosing cover 2 is unscrewed, now ratchet 5 and ratchet 4 are meshed and stop second container 3 along with enclosing cover 2 rotates, in the time that enclosing cover 2 completes with the screw thread MII stroke of 1 mouthful of primary tank body, second container 3 and lid inwall 12 complete it simultaneously and interconnect screw thread M I stroke, and now second container 3 separates with enclosing cover 2; Due to self gravitation effect, second container 3 self fallings are in primary tank body 1, thus the mixing voluntarily of realization two or more material in primary tank body 1.
volatile organic pollution in removal motor vehicles car and/or the method for invasive organism
With reference to figure 2, describe according to one embodiment of the invention for removing volatile organic pollution in can enclosure space and/or the method for invasive organism.
First, detect the ambient parameter of motor vehicles.Preferably, ambient parameter comprises temperature and/or temperature.
Preferably, guarantee that described interior space humidity is less than or equal to 70%, is preferably less than or equal to 60%, the step of the humidity of 20%-50% more preferably.More preferably, if in described car humidity higher than 70% and preferably dehumidify higher than 65% time, preferably dehumidifying is to above-mentioned scope.
Preferably, guarantee motor vehicles vehicle interior temperature be approximately 10 DEG C-80 DEG C, preferred about 20-70 DEG C, more preferably approximately 25 DEG C-55 DEG C, most preferably be about 30-55 DEG C.More preferably, if vehicle interior temperature lower than 5 DEG C, heat, be preferably heated to above-mentioned scope during preferably lower than 10 DEG C.
In the illustrated embodiment, then detect described volatile organic pollution in can enclosure space and/or the concentration of invasive organism.But those skilled in the art can understand, although so not preferred, this step can be exchanged with abovementioned steps.
Detectable concentration preferably like this, is preferably within the scope of aforementioned ambient parameter, makes detected vehicle in static, air-tight state; Correct position in vehicle is placed sampled point; Determine and detect the concentration that obtains (for example by arithmetic mean of instantaneous value or get high value) based on each sampled point institute monitored data.For Samples selecting, the M1 class vehicle defining for GB/T 15089 is preferably arranged in front-seat headrest line mid point and/or back railway carriage or compartment; Preferably along vehicle center line, more than two sampled point is set for M2 class vehicle; Preferably can more than three sampled point be set along compartment center line for M3 class vehicle, if there is multilayer, preferably place more than three sampled point along each layer of vehicle center line.Can select any suitable means to detect, include but not limited to for detection of the phenol reagent process of formaldehyde, for detection of the colorimetric method of benzene homologues and/or for detection of the colorimetric method of TVOC.
Volatile organic pollution based on measured and/or the concentration value of invasive organism, ambient parameter and type of motor vehicle are selected aqueous solution of chlorine dioxide, chlorine dioxide solid or chlorine dioxide gel consumption, are especially preferably selected aqueous solution of chlorine dioxide.
In the method according to the invention, preferably select to have to approach neutral pH value, for example, there is about 3-8, preferred about 4-7, the pH value of 5-7 more preferably from about.The control example of pH value is as can received acid or realize by controlling acid amount by further adding.
The step of this selection consumption is preferably selected aqueous solution of chlorine dioxide, chlorine dioxide solid or the chlorine dioxide gel of corresponding umber in portioning mode, especially preferably select according to summary of the invention table 2.
More preferably, the method according to this invention is selected aqueous solution of chlorine dioxide.Preferably use " the certainly mixing " container shown in Fig. 1 to carry out.For example at interior splendid attire first component of primary tank body 1 of container, be preferably for example the first solution of sodium chlorite, and interior splendid attire the second component of second container 3, be preferred for the second solution of acid, more preferably citric acid and/or hydrochloric acid, and by screw cap 2, the first component and the second component are mixed to form online aqueous solution of chlorine dioxide.
Alternatively, before placing aqueous solution of chlorine dioxide, band metal parts in covering car, as instrument board, handle or relevant appliance.
By described aqueous solution of chlorine dioxide, chlorine dioxide solid or chlorine dioxide gel place described can enclosure space in.
Alternatively, hang mark outward at vehicle, as " administering No Admittance ".
Make described space keep sealing 1-96 hour, preferably 24-96 hour, more preferably 24-72 hour, 48-72 hour most preferably.For the off-period that is less than 24 hours, preferably exceeding ormal weight and be more or less the same through once removing the amount of operation or volatile pollutant, be for example no more than 100%, select as being no more than 50%, while being no more than 20%.Preferably, every 24 hours, operating personnel entered interior observation, and viewing duration vehicle keeps sealing.Thus, this airtight interior space being carried out to chlorine dioxide fumigates.This stifling container finish that accommodates aqueous solution of chlorine dioxide that preferably also can be included in arranges slowly-releasing part.
The improvement time is opened car door after arriving, and the 4-6 hour that ventilates alternatively.
After ventilation, then detect described predetermined volatile pollutant in can enclosure space and/or the concentration of invasive organism, and by the concentration value detecting again and the concentration reference value comparison of regulation.If passed examination, can remove mark, and carries out all the other operations alternatively, as perfuming, clean etc.
If the volatile pollutant detecting again and/or the concentration value of invasive organism, higher than the concentration reference value of described regulation, select the suitable amounts of aqueous solution of chlorine dioxide, chlorine dioxide solid or chlorine dioxide gel to remove again.
remove the volatile organic pollution of Indoor environment and/or the method for invasive organism
Remove the volatile organic pollution of Indoor environment and/or the step of invasive organism method and be similar to method step in above-mentioned car.Especially, chlorine dioxide being carried out in space in this airtight building fumigates.This stifling container finish that accommodates aqueous solution of chlorine dioxide that preferably also can be included in arranges slowly-releasing part.But difference is, also need to determine volume or the floor space of the interior space, and on the basis of this volume or floor space, the volatile organic pollution based on measured and/or the concentration value of invasive organism, ambient parameter are selected aqueous solution of chlorine dioxide, chlorine dioxide solid or chlorine dioxide gel consumption, are especially preferably selected aqueous solution of chlorine dioxide.The step of this selection consumption is preferably selected aqueous solution of chlorine dioxide, chlorine dioxide solid or the chlorine dioxide gel of corresponding umber in portioning mode, select aqueous solution of chlorine dioxide, chlorine dioxide solid or the chlorine dioxide gel of corresponding umber under the condition of the especially preferred data at summary of the invention table 1.In addition,, for Indoor environment environment, preferably, if any furniture, also have furniture inside and also optional outside sprayed and the step of smearing for example this aqueous solution of chlorine dioxide.
In addition, the pollutant of the interior space and/or microorganism detection are different from car alternatively, for example can according to the volume of the interior space or preferably floor space divide different spaces or sample in region, and determine detected value (for example by arithmetic mean of instantaneous value or get high value) according to sampled value.
Embodiment 1
Provide and roll off the production line and totally 5 of non-delivery consumer's brand 1 motor vehicles (five), use volatile organic pollution in above-mentioned removal motor vehicles car and/or the method for invasive organism.
Before placing aqueous solution of chlorine dioxide, concentration of formaldehyde, temperature and humidity in car are measured.Wherein, concentration of formaldehyde detects with methylene oxide detecting instrument, and unit is mg/m
3.Recording temperature is approximately 35 DEG C, and humidity is approximately 50%.
Concentration of formaldehyde based on recording, temperature and humidity, in car, place two parts of (bottle) aqueous solution of chlorine dioxide, concentration is that 10000ppm is (for aqueous solution of chlorine dioxide, 1ppm is close to mg/L), wherein every part of aqueous solution of chlorine dioxide is made in " certainly mixing " according to the present invention container, and has approximately 5 pH value.
(operating personnel entered this vehicle at 24,48 hours after placing described aqueous solution of chlorine dioxide, to seal described vehicle, carry out concentration of formaldehyde detection, and close vehicle in the time detecting and after completing), thus, fumigate with chlorine dioxide at interior space.After 72 hours, remove aqueous solution of chlorine dioxide.
Ambient parameter and formaldehyde removal effect for these five samples provide in following table 3.
Table 3-brand 1 motor vehicles are removed formaldehyde experimental data
In addition, after 72 hours, benzene concentration≤0.10mg/m in car
3, toluene concentration≤1.00mg/m
3, xylene concentration≤1.3mg/m
3, ethylbenzene concentration≤1.30mg/m
3, concentration of styrene≤1.30mg/m
3, acetaldehyde concentration≤0.04mg/m
3, methacrylaldehyde concentration is less than or equal to 0.04mg/m
3.
Embodiment 2
Provide and roll off the production line and totally 5 of non-delivery consumer's brand 2 motor vehicles (five), use volatile organic pollution in above-mentioned removal motor vehicles car and/or the method for invasive organism.
Before placing aqueous solution of chlorine dioxide, concentration of formaldehyde, temperature and humidity in car are measured.Wherein, concentration of formaldehyde detects with methylene oxide detecting instrument, and unit is mg/m
3.Recording temperature is approximately 3 DEG C, and humidity is approximately 20%.For this temperature, interior space is for example heated to approximately 20 DEG C by heater.
Concentration of formaldehyde, temperature (temperature after heating) and humidity based on recording, in car, place two parts of (bottle) aqueous solution of chlorine dioxide, concentration is 10000ppm, and wherein every part of aqueous solution of chlorine dioxide is made in " certainly mixing " according to the present invention container.Aqueous solution of chlorine dioxide contains corrosion inhibiter and has approximately 7 pH value.
Keep interior space to heat in situation, after placing described aqueous solution of chlorine dioxide, seal described vehicle (because of experiment needs, operating personnel entered this vehicle at 24,48 hours, carry out concentration of formaldehyde detection, and close vehicle in the time detecting and after completing), thus, fumigate with chlorine dioxide at interior space.After 72 hours, remove aqueous solution of chlorine dioxide.
Ambient parameter and formaldehyde removal effect for these five samples provide in following table 4.
Table 4-brand 2 motor vehicles are removed formaldehyde experimental data
In addition, after 72 hours, benzene concentration≤0.10mg/m in car
3, toluene concentration≤1.00mg/m
3, xylene concentration≤1.3mg/m
3, ethylbenzene concentration≤1.30mg/m
3, concentration of styrene≤1.30mg/m
3, acetaldehyde concentration≤0.04mg/m
3, methacrylaldehyde concentration≤0.04mg/m
3.
Embodiment 3
Provide and roll off the production line and totally 5 of non-delivery consumer's brand 3 motor vehicles (seven), use volatile organic pollution in above-mentioned removal motor vehicles car and/or the method for invasive organism.
Before placing aqueous solution of chlorine dioxide, concentration of formaldehyde, temperature and humidity in car are measured.Wherein, concentration of formaldehyde detects with methylene oxide detecting instrument, and this methylene oxide detecting instrument reading unit is mg/m
3.Recording temperature is approximately 0 DEG C, and humidity is approximately 40%.For this temperature, interior space is for example heated to approximately 40 DEG C by heater.
Concentration of formaldehyde, temperature (temperature after heating) and humidity based on recording, in car, place two parts of (bottle) aqueous solution of chlorine dioxide, concentration is 10000ppm, and wherein every part of aqueous solution of chlorine dioxide is made in " certainly mixing " according to the present invention container.Aqueous solution of chlorine dioxide contains corrosion inhibiter and pH value is about 4.
Keep interior space to heat in situation, after placing described aqueous solution of chlorine dioxide, seal described vehicle (because of experiment needs, operating personnel entered this vehicle at 24,48 hours, carry out concentration of formaldehyde detection, and close vehicle in the time detecting and after completing), thus, fumigate with chlorine dioxide at interior space.After 72 hours, remove aqueous solution of chlorine dioxide.
Ambient parameter and formaldehyde removal effect for these five samples provide in following table 5.
Table 5-brand 3 motor vehicles are removed formaldehyde experimental data
In addition, after 72 hours, benzene concentration≤0.10mg/m in car
3, toluene concentration≤1.00mg/m
3, xylene concentration≤1.3mg/m
3, ethylbenzene concentration≤1.30mg/m
3, concentration of styrene≤1.30mg/m
3, acetaldehyde concentration≤0.04mg/m
3, methacrylaldehyde concentration≤0.04mg/m
3.
Embodiment 4
Provide and roll off the production line and totally 5 of non-delivery consumer's brand 4 motor vehicles (five), use volatile organic pollution in above-mentioned removal motor vehicles car and/or the method for invasive organism.
Before placing aqueous solution of chlorine dioxide, concentration of formaldehyde, temperature and humidity in car are measured.Wherein, concentration of formaldehyde detects with methylene oxide detecting instrument, and this methylene oxide detecting instrument reading unit is mg/m
3.Recording temperature is approximately 35 DEG C, and humidity is approximately 70%.For this humidity, interior space is dehumidified to approximately 30%.
Concentration of formaldehyde based on recording, temperature and humidity (humidity after dehumidifying), in car, place two parts of (bottle) aqueous solution of chlorine dioxide, concentration is 10000ppm, and wherein every part of aqueous solution of chlorine dioxide is made in " certainly mixing " according to the present invention container.Aqueous solution of chlorine dioxide has corrosion inhibiter and has approximately 8 pH value.
After placing described aqueous solution of chlorine dioxide, seal described vehicle (because of experiment needs, operating personnel entered this vehicle at 24,48 hours, carried out concentration of formaldehyde detection, and closed vehicle in the time detecting and after completing), thus, fumigate with chlorine dioxide at interior space.After 72 hours, remove aqueous solution of chlorine dioxide.
Ambient parameter and formaldehyde removal effect for these five samples provide in following table 6.
Table 6-brand 4 motor vehicles are removed formaldehyde experimental data
In addition, after 72 hours, benzene concentration≤0.10mg/m in car
3, toluene concentration≤1.00mg/m
3, xylene concentration≤1.3mg/m
3, ethylbenzene concentration≤1.30mg/m
3, concentration of styrene≤1.30mg/m
3, acetaldehyde concentration≤0.04mg/m
3, methacrylaldehyde concentration≤0.04mg/m
3.
Embodiment 5
Provide and roll off the production line and totally 5 of non-delivery consumer's brand 5 motor vehicles (seven), use volatile organic pollution in above-mentioned removal motor vehicles car and/or the method for invasive organism.
Before placing aqueous solution of chlorine dioxide, benzene concentration, temperature and humidity in car are measured.Wherein, benzene concentration detects with benzene detector, and this benzene detector reading unit is mg/m
3.Recording temperature is 30 DEG C, and humidity is 80%.For this humidity, interior space is dehumidified to 50%.
Benzene concentration based on recording, temperature and humidity (humidity after dehumidifying), in car, place two parts of (bottle) aqueous solution of chlorine dioxide, concentration is 10000ppm, and wherein every part of aqueous solution of chlorine dioxide is made in " certainly mixing " according to the present invention container.Aqueous solution of chlorine dioxide has corrosion inhibiter and has approximately 6 pH value.
After placing described aqueous solution of chlorine dioxide, seal described vehicle (because of experiment needs, operating personnel entered this vehicle at 24,48 hours, carried out benzene concentration detection, and detect time and complete close vehicle), thus, fumigate with chlorine dioxide at interior space.After 72 hours, remove aqueous solution of chlorine dioxide.
Ambient parameter and benzene removal effect for these five samples provide in following table 7.
Table 7-brand 5 motor vehicles are removed benzene experimental data
For the vehicle of embodiment 1 to 5, except after formaldehyde/benzene one week again PARA FORMALDEHYDE PRILLS(91,95)/benzene content measure to determine whether formaldehyde/benzene content rebounds (described in the measurement of content of formaldehyde and the embodiment 1 to 5 that converts as above), and by visual and sense of smell check except formaldehyde/benzene rear car include metal parts whether corrosion and damage, except having free from extraneous odour in formaldehyde/benzene rear car and for comparing except air in car before and after formaldehyde/benzene.Above-mentioned measurement and check result are listed in the table below in 8.
Table 8
In addition, after 72 hours, concentration of formaldehyde≤0.10mg/m in car
3, toluene concentration≤1.00mg/m
3, xylene concentration≤1.3mg/m
3, ethylbenzene concentration≤1.30mg/m
3, concentration of styrene≤1.30mg/m
3, acetaldehyde concentration≤0.04mg/m
3, methacrylaldehyde concentration≤0.04mg/m
3.
Embodiment 6
For (M1 class vehicle) in car different concentration of formaldehyde (using volatile organic pollution in above-mentioned removal motor vehicles car and/or the method for invasive organism), select as the aqueous solution of chlorine dioxide with specified rate of following table 9, wherein every part of aqueous solution of chlorine dioxide is made and is had a pH value of approximately 3 to approximately 8 in " mixing certainly " according to the present invention container.The regulation place that these containers that a aqueous solution of chlorine dioxide is respectively housed are placed in room/car reaches 24-96 hour.Wherein, the content of formaldehyde value range described in this embodiment is containing lower limit end points, not containing upper limit end points.
Table 9
For the interior space of the initial concentration of formaldehyde of multiple difference, select to have the suitable aqueous solution of chlorine dioxide umber of respective concentration based on table 9.And at Che Nei or Indoor environment placement, the container of composition aqueous solution of chlorine dioxide is housed, and seals this indoor or interior space as described above.Obtain the formaldehyde removal effect as shown in following table 10 and 11.
Formaldehyde removal effect in the car of table 10-spring and autumn
Formaldehyde removal effect in the car of table 11-autumn and winter
In addition, after completing sealing, as after 24,48,72 or 96 hours, benzene concentration≤0.10mg/m in car
3, toluene concentration≤1.00mg/m
3, xylene concentration≤1.3mg/m
3, ethylbenzene concentration≤1.30mg/m
3, concentration of styrene≤1.30mg/m
3, acetaldehyde concentration≤0.04mg/m
3, methacrylaldehyde concentration≤0.04mg/m
3.
Embodiment 7
For benzene concentrations different in car (measuring as utilized benzene measurement instrument), use volatile organic pollution in above-mentioned removal motor vehicles car and/or the method for invasive organism, select as the aqueous solution of chlorine dioxide with specified rate of following table 12, wherein every part of aqueous solution of chlorine dioxide is made in " certainly mixing " according to the present invention container, and it has approximately 3 to approximately 8 pH value.These containers that a aqueous solution of chlorine dioxide is respectively housed are placed on the regulation place in room/car.Wherein, the benzene content range value described in this embodiment is containing lower limit end points, not containing upper limit end points.
Table 12
For the indoor and interior space of the initial benzene concentration of multiple difference, select to have the suitable aqueous solution of chlorine dioxide umber of respective concentration based on table 12.And at Che Nei or Indoor environment placement, the container of composition aqueous solution of chlorine dioxide is housed, and seals this interior space as described above, fumigate with aqueous solution of chlorine dioxide thus.Obtain the benzene removal effect as shown in following table 13 and 14.
Benzene removal effect in the car of table 13-spring and autumn
Benzene removal effect in the car of table 14-autumn and winter
In addition, after 24,48,72 or 96 hours, concentration of formaldehyde≤0.10mg/m in car
3, toluene concentration≤1.00mg/m
3, xylene concentration≤1.3mg/m
3, ethylbenzene concentration≤1.30mg/m
3, concentration of styrene≤1.30mg/m
3, acetaldehyde concentration≤0.04mg/m
3, methacrylaldehyde concentration≤0.04mg/m
3.
Embodiment eight
For the different concentration of formaldehyde of Indoor environment, use the volatile organic pollution of above-mentioned removal Indoor environment and/or the method for invasive organism.Select having to aqueous solution of chlorine dioxide amount as following table 13.These aqueous solution of chlorine dioxide are contained in container by portioning and are placed on indoor regulation place.Wherein, aqueous solution of chlorine dioxide consumption according to Indoor environment space taking square metre area definition as unit, for height, higher than the Indoor environment space of three meters, aqueous solution of chlorine dioxide consumption doubles.For being highly during higher than the multiple of three meters, aqueous solution of chlorine dioxide consumption is by the proportional increase of this multiple.In addition, for being more than or equal to 1mg/m
3content of formaldehyde, its every increase by 0.3, aqueous solution of chlorine dioxide consumption increase 10ml/m
2, for example, for 1-1.3mg/m
3content of formaldehyde, the aqueous solution of chlorine dioxide consumption of selection is 90ml/m
2.Aqueous solution of chlorine dioxide concentration is about 20ppm-3000ppm, preferably 1000ppm-25000ppm, more preferably 5000ppm-20000ppm, 10000ppm-20000ppm most preferably, and has approximately 3 to approximately 8 pH value.Wherein, seal this interior space and can be chosen as 24-96 hour, preferably 24,36,48,60,72,84,96 hours.Thus, in this interior space process of sealing, fumigate with chlorine dioxide.Before sealing and/or sealing step, if any furniture, also utilize aqueous solution of chlorine dioxide to spray the inside of furniture and/or outside, for example drawer inside, cabinet inside, furniture seam.
The foregoing is only the schematic detailed description of the invention of the present invention, not in order to limit scope of the present invention.Any those skilled in the art, not departing from equivalent variations, amendment and the combination done under the prerequisite of design of the present invention and principle, all should belong to the scope of protection of the invention.
Claims (10)
1. the volatile organic pollution of removal in can enclosure space and/or a method for invasive organism, comprising:
(a) detect described volatile organic pollution in can enclosure space and/or the concentration of invasive organism;
(b) concentration value of the volatile organic pollution based on measured and/or invasive organism is selected the amount of aqueous solution of chlorine dioxide, chlorine dioxide solid or chlorine dioxide gel;
(c) described aqueous solution of chlorine dioxide, chlorine dioxide solid or chlorine dioxide gel are placed on described can enclosure space in;
(d) make described sealing 1-96 hour, preferably 24-96 hour, more preferably 24-72 hour and the 48-72 hour most preferably of can enclosure space keeping;
(e) detect again described volatile pollutant in can enclosure space and/or the concentration of invasive organism, and by the concentration value detecting again and the concentration reference value comparison of regulation;
Wherein, if the volatile pollutant detecting again and/or the concentration value of invasive organism higher than the concentration reference value of described regulation, repeated execution of steps (b) is to (e).
2. method according to claim 1, wherein, described can enclosure space be the interior space of interior space or building.
3. method according to claim 1, wherein, the group that described volatile organic matter selects free formaldehyde, acetaldehyde, methacrylaldehyde, benzene, dimethylbenzene, ethylbenzene, styrene and any combination thereof to form, preferably, described volatile organic matter is formaldehyde and/or benzene, more preferably, the concentration reference value of described regulation is less than or equal to 0.2mg/m
3, be preferably less than or equal to 0.1mg/m
3, 0.1mg/m more preferably
3or 0.9mg/m
3.
4. method according to claim 1, wherein, in described step (a) before, also comprise and guarantee described can enclosure space humidity to be less than or equal to 70%, be preferably less than or equal to 60% and the step of the humidity of 20%-50% more preferably, preferably this guarantee the step of humidity comprise detection this can enclosure space in humidity and/or can enclosure space dehumidifying to this.
5. method according to claim 1, wherein, described aqueous solution of chlorine dioxide, chlorine dioxide solid or chlorine dioxide gel have and are less than or equal to 8 and be more than or equal to 3, be preferably less than or equal to 7 and be more than or equal to 4, be preferably less than or equal to 7 and be more than or equal to 5, be most preferably less than or equal to 6 and be more than or equal to 5 pH value.
6. method according to claim 1, wherein, be included in described step (a) guarantee before described can enclosure space in temperature be approximately 5 DEG C-80 DEG C, approximately 10 DEG C-80 DEG C, preferably approximately 20 DEG C-70 DEG C, more preferably approximately 25 DEG C-55 DEG C and most preferably be approximately 30 DEG C-50 DEG C, preferably this guarantee the step of temperature comprise detect this can enclosure space in temperature step and/or this can be heated by enclosure space.
7. method according to claim 1, wherein, described step (b) comprising: at least a aqueous solution of chlorine dioxide, chlorine dioxide solid or the chlorine dioxide gel with the composition of given volume amount is provided; And the concentration value of organic pollution based on measured is selected the umber of described aqueous solution of chlorine dioxide, chlorine dioxide solid or chlorine dioxide gel.
8. method according to claim 1, also comprise that the container by having at least two spaces that can isolate each other prepares the step of described aqueous solution of chlorine dioxide depressurization, wherein, described at least two spaces hold respectively described aqueous solution of chlorine dioxide material component, by the sealing mixing aqueous solution of chlorine dioxide material component between at least two spaces described in removing to prepare described aqueous solution of chlorine dioxide.
9. method according to claim 8, wherein, described container comprises that primary tank body, the enclosing cover with container body mouth are connected with described enclosing cover screw thread or bayonet socket and are contained at least one the second container body in described primary tank body, wherein, described enclosing cover is threaded io described primary tank body mouth, and is formed with respectively ratchet and pawl on described second container body and described primary tank body;
Wherein, described primary tank body holds the first material component, is preferably the first solution of sodium chlorite;
Described second container holds the second material component, is preferably acid, is more preferably selected from citric acid and hydrochloric acid at least one the second solution;
Described preparation process comprises that screwing described enclosing cover interacts so that described second container body and described enclosing cover depart from the ratchet and pawl that makes to be positioned on described second container body and described primary tank body, thereby allows described the first and second raw material components from being mixed to form described ClO 2 solution.
By aqueous solution of chlorine dioxide, chlorine dioxide solid or chlorine dioxide gel for removing volatile organic pollution in can enclosure space and/or the purposes of invasive organism, wherein said aqueous solution of chlorine dioxide, chlorine dioxide solid or chlorine dioxide gel have and are less than or equal to 8 and be more than or equal to 3, be preferably less than or equal to 7 and be more than or equal to 4, be preferably less than or equal to 7 and be more than or equal to 5, be most preferably less than or equal to 6 and be more than or equal to 5 pH value.
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| CN106362564A (en) * | 2016-10-13 | 2017-02-01 | 佛山柯维光电股份有限公司 | Method and device for removing VOC in sealed space |
| CN111360053A (en) * | 2020-03-09 | 2020-07-03 | 上海应用技术大学 | Polluted soil oxidation remediation method |
| CN112121617A (en) * | 2020-10-12 | 2020-12-25 | 广州市佰分佰环境治理有限公司 | Method for removing indoor organic chemical pollutants by chlorine dioxide gas |
| CN112295601A (en) * | 2019-08-02 | 2021-02-02 | 中国石油化工股份有限公司 | Oxidation catalyst for treating styrene waste gas and preparation method and application thereof |
| WO2021097119A1 (en) * | 2019-11-11 | 2021-05-20 | ProKure Solutions, LLC | Methods of treatment of volatile organic compounds using chlorine dioxide |
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| WO2021097119A1 (en) * | 2019-11-11 | 2021-05-20 | ProKure Solutions, LLC | Methods of treatment of volatile organic compounds using chlorine dioxide |
| CN111360053A (en) * | 2020-03-09 | 2020-07-03 | 上海应用技术大学 | Polluted soil oxidation remediation method |
| CN112121617A (en) * | 2020-10-12 | 2020-12-25 | 广州市佰分佰环境治理有限公司 | Method for removing indoor organic chemical pollutants by chlorine dioxide gas |
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