SE2150542A1 - A system and a method for cleaning firefighting equipment - Google Patents
A system and a method for cleaning firefighting equipment Download PDFInfo
- Publication number
- SE2150542A1 SE2150542A1 SE2150542A SE2150542A SE2150542A1 SE 2150542 A1 SE2150542 A1 SE 2150542A1 SE 2150542 A SE2150542 A SE 2150542A SE 2150542 A SE2150542 A SE 2150542A SE 2150542 A1 SE2150542 A1 SE 2150542A1
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- Prior art keywords
- filter
- cleaning liquid
- unit
- washing unit
- equipment
- Prior art date
Links
- 238000004140 cleaning Methods 0.000 title claims abstract description 140
- 238000000034 method Methods 0.000 title claims description 39
- 239000007788 liquid Substances 0.000 claims abstract description 102
- 238000005406 washing Methods 0.000 claims abstract description 80
- 239000002245 particle Substances 0.000 claims description 45
- 230000001681 protective effect Effects 0.000 claims description 44
- 238000001914 filtration Methods 0.000 claims description 22
- 239000000126 substance Substances 0.000 claims description 13
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 12
- 229910052799 carbon Inorganic materials 0.000 claims description 12
- 229910001385 heavy metal Inorganic materials 0.000 claims description 11
- 229930195733 hydrocarbon Natural products 0.000 claims description 8
- 150000002430 hydrocarbons Chemical class 0.000 claims description 8
- 231100000331 toxic Toxicity 0.000 claims description 8
- 230000002588 toxic effect Effects 0.000 claims description 8
- 239000000356 contaminant Substances 0.000 claims description 7
- 239000004071 soot Substances 0.000 claims description 7
- 238000005086 pumping Methods 0.000 claims description 5
- 238000011144 upstream manufacturing Methods 0.000 claims description 5
- 238000004506 ultrasonic cleaning Methods 0.000 claims description 4
- 230000001680 brushing effect Effects 0.000 claims description 3
- 238000005189 flocculation Methods 0.000 claims description 3
- 230000016615 flocculation Effects 0.000 claims description 3
- 238000005342 ion exchange Methods 0.000 claims description 3
- 238000002791 soaking Methods 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims description 2
- 239000012530 fluid Substances 0.000 claims description 2
- 238000005507 spraying Methods 0.000 claims description 2
- 150000004945 aromatic hydrocarbons Chemical class 0.000 claims 1
- 125000005575 polycyclic aromatic hydrocarbon group Chemical group 0.000 abstract description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 15
- 230000036541 health Effects 0.000 description 7
- 206010028980 Neoplasm Diseases 0.000 description 6
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 6
- 201000011510 cancer Diseases 0.000 description 5
- 238000005202 decontamination Methods 0.000 description 5
- 230000003588 decontaminative effect Effects 0.000 description 5
- 230000003247 decreasing effect Effects 0.000 description 4
- 239000000383 hazardous chemical Substances 0.000 description 4
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 3
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 3
- 229910052787 antimony Inorganic materials 0.000 description 3
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 3
- 229910052785 arsenic Inorganic materials 0.000 description 3
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 3
- 229910052790 beryllium Inorganic materials 0.000 description 3
- ATBAMAFKBVZNFJ-UHFFFAOYSA-N beryllium atom Chemical compound [Be] ATBAMAFKBVZNFJ-UHFFFAOYSA-N 0.000 description 3
- 229910052797 bismuth Inorganic materials 0.000 description 3
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 3
- 229910052793 cadmium Inorganic materials 0.000 description 3
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 3
- 229910052804 chromium Inorganic materials 0.000 description 3
- 239000011651 chromium Substances 0.000 description 3
- 229910017052 cobalt Inorganic materials 0.000 description 3
- 239000010941 cobalt Substances 0.000 description 3
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 150000002500 ions Chemical class 0.000 description 3
- 239000011133 lead Substances 0.000 description 3
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 3
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 3
- 229910052753 mercury Inorganic materials 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 229910052750 molybdenum Inorganic materials 0.000 description 3
- 239000011733 molybdenum Substances 0.000 description 3
- 229910052759 nickel Inorganic materials 0.000 description 3
- 229910052709 silver Inorganic materials 0.000 description 3
- 239000004332 silver Substances 0.000 description 3
- 229910052718 tin Inorganic materials 0.000 description 3
- 239000011135 tin Substances 0.000 description 3
- 229910052725 zinc Inorganic materials 0.000 description 3
- 239000011701 zinc Substances 0.000 description 3
- DXBHBZVCASKNBY-UHFFFAOYSA-N 1,2-Benz(a)anthracene Chemical compound C1=CC=C2C3=CC4=CC=CC=C4C=C3C=CC2=C1 DXBHBZVCASKNBY-UHFFFAOYSA-N 0.000 description 2
- FMMWHPNWAFZXNH-UHFFFAOYSA-N Benz[a]pyrene Chemical compound C1=C2C3=CC=CC=C3C=C(C=C3)C2=C2C3=CC=CC2=C1 FMMWHPNWAFZXNH-UHFFFAOYSA-N 0.000 description 2
- -1 PAH Chemical class 0.000 description 2
- 241000282887 Suidae Species 0.000 description 2
- MWPLVEDNUUSJAV-UHFFFAOYSA-N anthracene Chemical compound C1=CC=CC2=CC3=CC=CC=C3C=C21 MWPLVEDNUUSJAV-UHFFFAOYSA-N 0.000 description 2
- 125000003118 aryl group Chemical group 0.000 description 2
- 231100000357 carcinogen Toxicity 0.000 description 2
- 239000003183 carcinogenic agent Substances 0.000 description 2
- WDECIBYCCFPHNR-UHFFFAOYSA-N chrysene Chemical compound C1=CC=CC2=CC=C3C4=CC=CC=C4C=CC3=C21 WDECIBYCCFPHNR-UHFFFAOYSA-N 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 231100001261 hazardous Toxicity 0.000 description 2
- 230000002262 irrigation Effects 0.000 description 2
- 238000003973 irrigation Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000002829 reductive effect Effects 0.000 description 2
- 239000003053 toxin Substances 0.000 description 2
- 231100000765 toxin Toxicity 0.000 description 2
- 108700012359 toxins Proteins 0.000 description 2
- 230000032258 transport Effects 0.000 description 2
- TXVHTIQJNYSSKO-UHFFFAOYSA-N BeP Natural products C1=CC=C2C3=CC=CC=C3C3=CC=CC4=CC=C1C2=C34 TXVHTIQJNYSSKO-UHFFFAOYSA-N 0.000 description 1
- 208000024172 Cardiovascular disease Diseases 0.000 description 1
- 241000282412 Homo Species 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 125000005605 benzo group Chemical group 0.000 description 1
- FTOVXSOBNPWTSH-UHFFFAOYSA-N benzo[b]fluoranthene Chemical compound C12=CC=CC=C1C1=CC3=CC=CC=C3C3=C1C2=CC=C3 FTOVXSOBNPWTSH-UHFFFAOYSA-N 0.000 description 1
- 230000000711 cancerogenic effect Effects 0.000 description 1
- 231100000315 carcinogenic Toxicity 0.000 description 1
- 231100000481 chemical toxicant Toxicity 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000011362 coarse particle Substances 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000008175 fetal development Effects 0.000 description 1
- GVEPBJHOBDJJJI-RHRFEJLCSA-N fluoranthene Chemical compound C1=CC(C2=CC=CC=C22)=C3C2=CC=CC3=[14CH]1 GVEPBJHOBDJJJI-RHRFEJLCSA-N 0.000 description 1
- GVEPBJHOBDJJJI-UHFFFAOYSA-N fluoranthrene Natural products C1=CC(C2=CC=CC=C22)=C3C2=CC=CC3=C1 GVEPBJHOBDJJJI-UHFFFAOYSA-N 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 150000002632 lipids Chemical class 0.000 description 1
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- 231100000719 pollutant Toxicity 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
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- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 238000001223 reverse osmosis Methods 0.000 description 1
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- 239000002904 solvent Substances 0.000 description 1
- 231100000167 toxic agent Toxicity 0.000 description 1
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- 229910021642 ultra pure water Inorganic materials 0.000 description 1
- 239000012498 ultrapure water Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B29/00—Devices, e.g. installations, for rendering harmless or for keeping off harmful chemical agents
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B17/00—Protective clothing affording protection against heat or harmful chemical agents or for use at high altitudes
- A62B17/003—Fire-resistant or fire-fighters' clothes
-
- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D13/00—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches
- A41D13/02—Overalls, e.g. bodysuits or bib overalls
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/02—Cleaning by the force of jets or sprays
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
- B08B3/14—Removing waste, e.g. labels, from cleaning liquid; Regenerating cleaning liquids
-
- 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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F95/00—Laundry systems or arrangements of apparatus or machines; Mobile laundries
-
- 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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
-
- 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
- C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/301—Detergents, surfactants
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/32—Hydrocarbons, e.g. oil
- C02F2101/327—Polyaromatic Hydrocarbons [PAH's]
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/36—Organic compounds containing halogen
-
- 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
- C02F2303/24—Separation of coarse particles, e.g. by using sieves or screens
Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Toxicology (AREA)
- Pulmonology (AREA)
- Textile Engineering (AREA)
- Physical Education & Sports Medicine (AREA)
- Cleaning By Liquid Or Steam (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
- Fire Alarms (AREA)
- Filtration Of Liquid (AREA)
- Water Treatment By Sorption (AREA)
- Respiratory Apparatuses And Protective Means (AREA)
Abstract
A system for cleaning equipment (105), comprising a washing unit (110) connected to a filter unit (150) through a discharge tube (120). The washing unit (110) comprises a washing chamber (101) with at least one inlet for a cleaning liquid (CL), wherein the washing unit (110) is configured to clean the equipment (105) with the cleaning liquid (CL), whereby a contaminated cleaning liquid (CCL) comprising polycyclic aromatic hydrocarbons (PAHs) is obtained. The discharge tube (120) is configured to transport the contaminated cleaning liquid (CCL) from the washing unit (110) to the filter unit (150). The filter unit (150) comprises a first filter (Fi), a second filter (F2) and a third filter (F3) arranged to filter the contaminated cleaning liquid (CCL), whereby a decontaminated cleaning liquid (DCL) is obtained and wherein the filter unit (150) further comprises a discharge outlet (170) to release the decontaminated cleaning liquid (DCL).
Description
A SYSTEM AND A METHOD FOR CLEANING FIREFIGHTING EOUIPMENT Technical Field of the Invention The invention relates to a system and a method for cleaning f1ref1ghting equipment, such as personal protective equipment (PPE) used for firefighting.
Background Firefighters use a number of different protective garrnents and equipment in their service. When used during f1ref1ghting, the protective equipment, including the self-contained breathing apparatus (SCBA), helmet, face mask, boots and gloves, Will become contaminated With soot particles and combustion gases. Some of these particles are hazardous toxins and/or carcinogens, e. g. polycyclic aromatic hydrocarbons (PAH) particles, and pose a real threat to human health.
Studies show that f1ref1ghters face a signif1cantly higher risk of being diagnosed With, and dying from, various forms of cancer than the general population. This is due to the hazardous chemicals and carcinogenic particles they are exposed to in the line of duty. To reduce this exposure and the resulting cancer risk, it is favorable to thoroughly, safely and eff1ciently clean and decontaminate all personal protective equipment after every use.
Decontamination of the personal protective equipment immediately upon retum to the f1ref1ghting station is favorable. HoWever, cleaning the equipment by hand may be both time consuming and hard Work and also poses a health risk due to unprotected exposure to the toxins and/or carcinogens. Furthermore, cleaning the protective equipment may result in contaminated effluent Water containing the hazardous chemical particles.
A device for purifying contaminated Water Which has been used for f1ref1ghting is disclosed in CA2208604. The device comprises several filters in order to remove soot accumulated in the Water. HoWever, even though CA2208604 disclo ses purifying contaminated Water, there is a need for an improved and healthier method for decontaminating protective equipment used by firefighters. An object of the present invention is to overcome these problems.
Summary of the Invention According to a first aspect of the invention, the above and other objects of the invention are achieved, in full or at least in part, by a system as defined by claim 1. According to this claim the above object is achieved by a system for cleaning firefighting equipment, such as personal protective equipment for firefighting, comprising a Washing unit connected to a filter unit through a discharge tube. The Washing unit comprises a Washing chamber With at least one inlet for a cleaning liquid, and the Washing unit is configured to clean the firefighting equipment With the cleaning liquid. A contaminated cleaning liquid comprising polycyclic aromatic hydrocarbons (PAHs) is thus obtained. The discharge tube is configured to transport the contaminated cleaning liquid from the Washing unit to the filter unit, and the filter unit comprises at least a first filter and a second filter and optionally a third and/or more filters arranged to filter the contaminated cleaning liquid such that a decontaminated cleaning liquid is obtained. Further, the filter unit comprises a discharge outlet to release the decontaminated cleaning liquid.
This system is advantageous in that the release of chemicals in the drain and the environment is decreased, and that the firefighting equipment is decontaminated in an efficient manner. Decontaminated firefighting equipment results in loWered exposure of chemicals to staff Further, the automatic cleaning system also results in loWered exposure of chemicals to staff, since the cleaning and decontamination need not be performed by hand. Hence, health dangers for staff using the personal protective equipment and optionally other firefighting equipment are decreased and health issues for such staff is prevented. For instance, cancer disease among staff using the personal protective equipment can be reduced.
According to one embodiment, the equipment to be cleaned in the system is personal protective equipment used during firefighting. Firefighters are exposed to many hazardous chemicals and have an increased risk of being diagnosed With cancers due to the exposure to PAHs and other toxic chemicals.
According to another embodiment, the system further comprises a pump.
The pump may be arranged upstream from the filters or between the first filter and the second filter. A pump Will facilitate the transportation of liquid through the filters in the filter unit. The pump may also be arranged to discharge the contaminated cleaning liquid from the Washing unit.
According to yet another embodiment, the contaminated cleaning liquid further comprises contaminants selected from the group consisting of heavy metals, perflour- inated alkylated substances (PFAS), residuals from soot, other toxic or cancerous hydrocarbons or a combination thereof For example, heavy metals include but are not limited to antimony, arsenic, beryllium, bismuth, cadmium, chromium, cobalt, copper, lead, manganese, mercury, molybdenum, nickel, silver, tin, zinc, compositions and/or ions thereof, or a combination thereof According to one embodiment, the filters are particle filters, carbon filters, ion exchange filters or a combination thereof. Preferably, the first and second filters being particle filters and a third filter being a carbon filter. This combination results in a successful decontamination of the cleaning liquid, and removes both large particles and PAHs from the cleaning liquid, both non-dissolved and dissolved PAHs.
According to one embodiment, the discharge outlet is in fluid communication With the Washing unit, so that the decontaminated cleaning liquid can be recycled to the Washing unit. This is beneficial since the Water in the decontaminated cleaning liquid is reused. The recycling of Water results in less Water consumption, Which is a sustainable solution and is environmentally friendly.
According to a second aspect, there is provided a method for cleaning personal protective equipment comprising a Washing unit comprising a Washing chamber With at least one inlet. The Washing unit is connected to a filter unit through a discharge tube. The method comprises the steps of cleaning the equipment in a Washing unit With a cleaning liquid, thereby obtaining contaminated cleaning liquid, transporting the contaminated cleaning liquid from the Washing unit to the filter unit through the discharge tube, and filtering the contaminated cleaning liquid through the filter unit comprising at least a first filter and a second filter, thereby obtaining a decontaminated cleaning liquid. Optionally, the method includes the steps of filtering the contaminated Cleaning liquid through one or more additional filters. Finally, the method comprises releasing the decontaminated cleaning liquid through a discharge outlet of the f1lter unit.
This method is advantageous since the release of chemicals in the drain and environment is decreased, and that the personal protective equipment and other f1ref1ghting equipment is decontaminated in an efficient manner. Decontaminated personal protective equipment results in lowered exposure of chemicals to staff. Further, the method is automatic and the cleaning and decontamination need not be performed by hand. Hence, health dangers for staff using the personal protective equipment are decreased and health issues for such staff is prevented. For instance, cancer disease among staff using the personal protective equipment can be reduced. Further, the method is efficient and simple without need for cumbersome processing steps.
According to a further embodiment, the step of releasing the decontaminated cleaning liquid is followed by a step of retuming the decontaminated cleaning liquid to the washing unit by connecting the discharge outlet to the washing unit. This is benef1cial since the water may be reused, resulting in less water consumption and thus a more environmentally friendly process.
According to a second embodiment, the method further comprises a step of pumping the contaminated cleaning liquid through at least one of the f1lters in the f1ltering unit using a pump. The use of a pump facilitates the transportation of the cleaning liquid through the system.
Other objectives, features and advantages of the present invention will appear from the following detailed disclosure, from the attached claims, as well as from the drawings. It is noted that the invention relates to all possible combinations of features.
Generally, all terms used in the claims are to be interpreted according to their ordinary meaning in the technical f1eld, unless explicitly defined otherwise herein. All references to "a/an/the [element, device, component, means, step, etc.]" are to be interpreted openly as referring to at least one instance of said element, device, component, means, step, etc., unless explicitly stated otherwise. The steps of any method disclosed herein do not have to be performed in the exact order disclosed, unless explicitly stated.
As used herein the terrn "com risin " and Variations of this terrn are not 7 intended to exclude other additives, components, integers or steps.
Brief description of the Drawings By way of example, embodiments of the present invention will now be described with reference to the accompanying drawings, in which: Figure la is a schematic view of a system for cleaning f1ref1ghting equipment according to one embodiment; Figure lb is a schematic view of a system for cleaning f1ref1ghting equipment according to another embodiment; Figure lc is a schematic view of a system for cleaning f1ref1ghting equipment according to yet another embodiment; Figure 2 shows a washing unit according to one embodiment of the present disclosure; and Figure 3 is a flow chart for a method for cleaning f1ref1ghting equipment.
Detailed Description of Preferred Embodiments of the invention The invention relates to a system and method for purif1cation and decontamination of f1ref1ghting equipment, such as tools, hardware, hoses and personal protective equipment (PPE) used by f1ref1ghters. For example, the personal protective equipment includes protective clothing, boots, helmets, face masks, SCBAs and gloves.
For example, the personal protective equipment, or part thereof, is arranged to provide protection against f1res, fumes and gases. For example, the personal protective equipment includes protecting clothing in the form of an overall or trousers and jacket including at least a therrnal barrier. For example, the protective clothing includes an outer shell, a moisture barrier, a therrnal barrier and pockets of air.
When cleaning f1ref1ghting equipment, toxic particles, such as polycyclic aromatic hydrocarbons (PAH), heavy metals, perflourinated alkylated substances (PFAS) and other toxic hydrocarbons, are rinsed off from the equipment and dispersed and/or bound into the cleaning liquid used. Even though the cleaning results in that the f1ref1ghting equipment is decontaminated, the cleaning process also yield a contaminated Cleaning liquid, which needs to be handled properly and safely to avoid pollution of the environment and to decrease the risk of exposure to humans.
In short, the system and method for cleaning firefighting equipment disclo sed herein comprises cleaning the equipment in a washing unit and transporting the contaminated cleaning liquid obtained when washing the equipment into a filter unit. The filter unit in tum comprises a number of filters, which purify the cleaning liquid and remove contaminating particles from the cleaning liquid. A decontaminated cleaning liquid is obtained, which may be released in for instance the sewer.
The present inventors have surprisingly found that the combination of a washing unit for cleaning firefighting equipment with a filter unit as disclosed herein results in that the personal protective equipment as well as the cleaning liquid is decontaminated to protect fire fighters and other personnel from PAH, heavy metals, PFAS and/or other toxic hydrocarbons. To purify the contaminated cleaning liquid is important, since the contaminated cleaning liquid is polluted with toxic, sometimes cancerous, and hazardous chemicals and particles, which should not be released in the environment and from which fire fighters and other personnel should be protected from.
One embodiment of the invention will now be described in relation to Figures la to 2. With reference to Fig. la, an embodiment of a system 100 for cleaning firefighting equipment, such as personal protective equipment, disclosed herein is shown. The system 100 comprises a washing unit 110 and a filter unit 150. The washing unit 110 is connected to the filter unit 150 through a discharge tube 120 and the filter unit 150 comprises a discharge outlet 170. Personal protective equipment 105 or other firefighting equipment is placed inside the washing unit 110. To clean the equipment 105, a cleaning liquid CL is provided to the washing unit 110.
The cleaning liquid CL used in the washing unit 110 may comprise for instance water (which may be reverse osmosis (RO) water or ultrapure water), a detergent, or a liquid solvent, or a combination thereof.
The discharge tube 120 transports contaminated cleaning liquid CCL to the filter unit 150. Decontaminated cleaning liquid DCL exits the filter unit 150 through the discharge outlet 170 and is released in the sewer S, as shown in Figs 1a-1c.
Altematively, the decontaminated Cleaning liquid is discharged to the environment, eg. if there is no access to a drain, sewer or similar.
The washing unit 110 is adapted for decontaminating and cleaning firefighting equipment 105, such as personal protective equipment for firefighters. The washing unit 110 may use fixed or movable inlets, such as nozzles, (shown in Pig. 2) inside the washing unit 110 to rinse and clean the personal protective equipment placed therein. Further, the washing unit 110 may comprise one or more mechanical cleaning devices, such as brushes or the like, in combination with irrigation to remove contaminants from the protective equipment 105.
Ultrasonic cleaning may also be used in the washing unit 110. In such case, the washing unit 110 comprises an ultrasonic generating transducer, which generates ultrasonic waves causing vibrations in the cleaning liquid CL to clean the protective equipment 105.
In addition, the washing unit 110 may comprise a rotating basket configured to hold the protective equipment 105 and a motor configured to rotate said basket. The washing unit 110 may further be equipped with for instance a holder for SCBA single/ double cylinders, a holder for SCBA jumbo cylinders, a gear holder for face masks, helmets, gloves and/or boots.
Yet another altemative to achieve satisfying cleaning of the equipment is to use a soaking step followed by brushing and/or irrigation and/or to use ultrasonic cleaning in the washing unit 110. Moreover, the equipment 105 may be stationary arranged in the washing unit 110 or may be in motion inside the washing unit 110 to achieve efficient cleaning. An embodiment example of a washing unit 110 will be more thoroughly explained with references to Pig. 2.
The filter unit 150 in Pig. 1a-1c has a first, a second and a third filter P1, P2, P3 arranged in sequence after one another. According to the present invention, the filter unit 150 comprises at least the first filter and the second filter, wherein the third filter and additional filters are optional. The filters P1, P2, P3 may be particle filters, chemical filters (such as carbon filters), ion exchange filters or a combination thereof. Two or more of the filters P1, P2, P3 may be combined as one filter device with different filtering functions. Optionally, the filter unit 150 can use flocculation as a filtering technique.
Preferably, the first filter P1 is a particle filter. For example, the first and second filters P1, P2 are particle filters P1, P2, The third filter P3 is, e.g. a carbon filter. The first filter P1 is arranged upstream of the second filter P2 and the second filter P2 is arranged upstream of the third filter P3. Hence, the contaminated cleaning liquid CCL Will encounter and pass through the first filter P1 folloWed by the second filter P2 and the third filter P3. Preferably, the first particle filter P1 is a more coarse filter than the second particle filter P2. According to one embodiment the first particle filter P1 is a particle filter 100-300 um for filtering off debris and protect subsequent filters P2, P3 and/or other equipment. Por example, the first filter P1 is a replaceable bag filter. According to one embodiment, the second filter P2 is a particle filter 1-5 um. Altematively, the second filter is a carbon filter. The second filter P2 is, e. g. arranged for filtering off particles from fire-fighting activities, including undissolved particles, undissolved hydrocarbons, soot and similar. The third filter P3 is arranged for filtering off hydrocarbons, such as PAH, so lved in the cleaning liquid CL. In addition, the filter unit 150 may comprise a fourth filter (not illustrated), and optionally also a fifth and further filters (not illustrated). The fourth filter is, e. g. arranged for filtering off heavy metals, Wherein the fifth filter is a PPAS filter. Altematively, the fourth filter is a PPAS filter. According to one embodiment, the filter unit 150, or e. g. the third filter P3 thereof, is arranged for filtering off one or more of benzo(a)anthracene, benzo(b)fluoranthene, benzo(l<)fluoranthene, chrysene, benzo(a)pyrene and dibenzo(ah)anthracene. Por example, one of the filters, such as the fourth or fifth filter is arranged for filtering off one or more heavy metals, including but not limited to antimony, arsenic, beryllium, bismuth, cadmium, chromium, cobalt, copper, lead, manganese, mercury, molybdenum, nickel, silver, tin, zinc, compositions and/or ions thereof, or a combination thereof.
As shoWn in Pigs 1b and 1c, the filter unit 150 comprises a pump 130. The pump 130 in Pig. lb is placed upstream from the first particle filter P1 and the pump 130 in Pig. 1c is arranged between the first particle filter P1 and the second particle filter P2. The pump 130 Will facilitate the transportation of liquid through the filters P1, P2, P3 in the filter unit 150. Optionally, the pump 130 may be arranged outside the filter unit 150 or between the second and third filter P2, P3 (not shown). According to one embodiment, the pump 130 is a diaphragm pump.
Fig. 2 shows an embodiment of a washing unit 110 according to one embodiment. The washing unit 110 is specif1cally designed for washing of personal protective equipment for fire fighters. Altematively, the washing unit 110 is designed for washing f1ref1ghting equipment. The washing unit 110 in Fig. 2 has a washing chamber 101 equipped with inlets, such as nozzles 102 for cleaning liquid CL, and a control panel 103. Further, the washing unit 110 comprises a door 104 for closing the washing chamber 101. For example, the door 104 is an upper door, wherein the washing unit further comprises a lower door 106 having a handle 107. The discharge tube 120 is connected to the back of the washing unit 110. Moreover, the washing unit 110 in Fig. 2 features a rotating basket (not shown) that enables the inlets or nozzles 102 ej ecting cleaning liquid CL to reach and decontaminate even tight and sometimes hard to reach spaces of the protective equipment.
The system 100 and method 300 disclosed herein are specifically efficient for decontaminating f1ref1ghting protective equipment 105 and contaminated cleaning liquid CCL obtained when cleaning f1ref1ghting protective equipment 105. PAHs are one of the group of toxic compounds present during firefighting.
PAHs are hydrocarbons, chemical compounds containing only carbon and hydrogen, whose molecule comprise of multiple aromatic rings. A polyaromatic hydrocarbon can have a varying number of rings, and rings of various sizes, including some that are not aromatic. The compounds within the PAH family thus vary in size. Larger PAHs are generally insoluble in water, although some smaller PAHs are water soluble and known contaminants in drinking water. The larger members of the PAH group are also poorly soluble in organic solvents and in lipids. Many of the PAHs are found in coal and in oil deposits, and are also produced by the therrnal decomposition of organic matter. Cancer is a primary human health risk of exposure to PAHs. Exposure to PAHs has also been linked with cardiovascular disease and poor fetal development.
To operate the system 100, contaminated personal protective equipment 105 is placed, preferably in a basket, in the washing unit 110, which is closed (using the doors 104, 106) and started. When the protective equipment 105 is cleaned, the Washing unit 110 Will release the contaminating particles and/or molecules from the protective equipment 105, and bind the contaminants in the cleaning liquid CL. Hence, the protective equipment 105 Will be decontaminated and a contaminated cleaning liquid CCL comprising the toxic contaminants is obtained, Which exits the Washing unit 110 through the discharge tube 120.
Thus, the contaminated cleaning liquid CCL is discharged from the Washing unit 110 through the discharge tube 120 and transported into the filter unit 150. Inside the filter unit 150, the contaminated cleaning liquid CCL Will pass each of the filters P1, Fz, P3.
The first particle filter P1 and the second particle filter P2 Will mechanically trap particles contained in the contaminated cleaning liquid CCL, While the carbon filter P3 Will purify the contaminated cleaning liquid CCL chemically through chemical bonding of unWanted contaminating particles and molecules. The coarsest particle filter P1 Will remove particles larger than a threshold size, followed by the less coarse particle filter P2, Which removes even smaller particles. Hence, the first particle filter P1 Will remove coarse pollutants, such as gravel, sand and the like, While the second particle filter P2 Will remove non-dissolved particles, such as soot or non-dissolved PAHs, from the cleaning liquid CL. Pinally, the chemical carbon filter P3 reduces the amount of the remaining hazardous particles, dissolved in the cleaning liquid CL. Por iiistance, PAHs dissolved in the cleaning liquid, Which are thus not separated from the cleaning liquid CL When passing the second particle filter P2. The combination of both mechanical and chemical filtration achieves an efficient and satisfying purification of the contaminated cleaning liquid CCL.
When the contaminated cleaning liquid CCL has passed the three filters P1, P2, P3, it has been decontaminated and a decontaminated cleaning liquid DCL is obtained. The decontaminated cleaning liquid DCL exits the filter unit 150 through the discharge outlet 170, Which may lead to and release the decontaminated cleaning liquid DCL in a seWer S (altematively into the nature or into storm Water).
Optionally, as indicated by the dashed line in Pigs 1a-1c, the discharge outlet 170 may continuously or interrnittently retum the decontaminated cleaning liquid DCL ll to the Washing unit 110, such that the decontaminated Cleaning liquid DCL may be reused. In this Way, the decontaminated cleaning liquid DCL is recycled and less e.g. Water needs to be used in the subsequent cleaning cycle.
With reference to Pig. 3, a floWchart of a method 300 for cleaning firefighting equipment, such as personal protective equipment 105, is shown. The method 300 comprises a first step of cleaning 310 the equipment 105 in a Washing unit 110 using a cleaning liquid CL. Further, the step of cleaning 310 the equipment 105 may comprise soaking the equipment 105. Optionally, the cleaning 310 may further comprise brushing the equipment 105 and/or spraying the equipment 105 With cleaning liquid CL, preferably by using nozzles/j ets 102 arranged inside the Washing unit 110, and/or rotating/moving the equipment 105 inside the Washing unit 110. Furthermore, the cleaning 310 may be conducted using ultrasonic cleaning.
In a second step, the method 300 comprises transporting 320 contaminated cleaning liquid CCL obtained When cleaning 310 the equipment 105 from the Washing unit 110 to a filter unit 150. Optionally, the method 300 further comprises a step of pumping 330 the contaminated cleaning liquid CCL through at least one of the filters P1, P2, P3 in the filtering unit 150 using a pump 130. The optional pumping step 330 is indicated in Pig. 3 by the dashed lines.
Next, the method 300 comprises filtering 340 the contaminated cleaning liquid CCL in the filter unit 150 comprising at least a first particle filter P1, a second particle filter P2 and a carbon filter P3. The filtering 340 occurs When the contaminated cleaning liquid CCL passes through one filter after the other in the filtering unit 150. Altematively, the method comprises filtering through at least the first filter and the second filter and optionally through the third and additional filters, Wherein the first filter may be a particle filter and the second filter may be a particle filter for smaller particles, a carbon filter or a PPAS filter. Por example, the method comprises filtering through a fourth filter an optionally also through a fifth and additional filters, Wherein one of the fourth filter and the fifth filter is a heavy metal filter and the other is a PPAS filter. Por example, the method comprises the step of filtering off one or more heavy metals, including but not limited to, antimony, arsenic, beryllium, bismuth, cadmium, 12 chromium, cobalt, copper, lead, manganese, mercury, molybdenum, nickel, silver, tin, zinc, compositions and/or ions thereof, or a combination thereof Subsequently, the method 300 comprises a step of releasing 350 decontamin- ated cleaning liquid DCL from the filter unit l50 through the discharge outlet l70.
The method 300 further comprises an optional step of retuming 360 the de- contaminated cleaning liquid DCL to the Washing unit ll0 by connecting the discharge outlet l70 to the Washing unit ll0.
In the claims, the term "comprises/comprising" does not exclude the presence of other elements or steps. Furthermore, although indiVidually listed, a plurality of means, elements or method steps may be implemented by e.g. a single unit or processor.
Additionally, although individual features may be included in different claims, these may possibly adVantageously be combined, and the inclusion in different claims does not imply that a combination of features is not feasible and/or advantageous. In addition, singular references do not exclude a plurality. The terms "a", "an", "f1rst", "second" etc. do not preclude a plurality. Reference signs in the claims are provided merely as a clarifying example and shall not be construed as limiting the scope of the claims in any Way.
Claims (23)
1. A system for Cleaning firefighting equipment (105), Comprising a Washing unit (110) connected to a filter unit (150) through a disCharge tube (120), Wherein the Washing unit (110) Comprises a Washing Chamber (101) With at least one inlet for a Cleaning liquid (CL), Wherein the Washing unit (110) is Configured to Clean the firefighting equipment (105) With the Cleaning liquid (CL), Whereby a Contaminated Cleaning liquid (CCL) Comprising polyCyCliC aromatiC hydroCarbons (PAHs) is obtained; the disCharge tube (120) is Configured to transport the Contaminated Cleaning liquid (CCL) from the Washing unit (110) to the filter unit (150); the filter unit (150) Comprises at least a first filter (P1) and a seCond filter (P2) arranged to filter the Contaminated Cleaning liquid (CCL), Whereby a deContaminated Cleaning liquid (DCL) is obtained; and Wherein the filter unit (150) further Comprises a disCharge outlet (170) to release the deContaminated Cleaning liquid (DCL).
2. The system aCCording to Claim 1, Wherein the firefighting equipment (105) to be Cleaned in the system (100) is personal protective equipment used for firefighting.
3. The system aCCording to Claim 1 or 2, Wherein the system further Comprises a pump (130) for pumping Contaminated Cleaning liquid (CCL) through at least one of the first filter (P1) and the seCond filter (P2).
4. The system aCCording to Claim 3, Wherein said pump (130) is arranged upstream from the first and seCond filters (P1, P2) or between the first filter (P1) and the seCond filter (P2).
5. The system aCCording to any one of the preCeding Claims, Wherein the Contaminated Cleaning liquid (CCL) Comprises Contaminants seleCted from the groupconsisting of heavy metals, perflourinated alkylated substances (PPAS), residuals from soot, other toxic or cancerous hydrocarbons or a combination thereof
6. The system according to any one of the preceding claims, Wherein the filters (P1, P2, P3) are particle filters, carbon filters, ion exchange filters or a combination thereof.
7. The system according to any one of the preceding claims, Wherein the first filter (P1) is a particle filter 100-300 um.
8. The system according to any one of the preceding claims, Wherein the first filter (P1) is a replaceable bag filter.
9. The system according to any one of the preceding claims, Wherein the second filter (P2) is a particle filter 1-5 um.
10. The system according to any one of the preceding claims, Wherein the filter unit (150) comprises a third filter (P3) arranged after the first and second filters.
11. The system according to claim 10, Wherein the third filter is a carbon filter.
12. The system according to any of the preceding claims, Wherein the filter unit (150) comprises a filter for filtering off heavy metals.
13. The system according to any of the preceding claims, Wherein the filter unit (150) comprises a filter for filtering off PPAS.
14. The system according to any one of the preceding claims, Wherein the discharge outlet (170) is in fluid communication With the Washing unit (110), so that the decontaminated cleaning liquid (DCL) may be recycled to the Washing unit (110).
15. The system according to any one of the preceding claims, Wherein the filter unit (150) further comprises a flocculation means to induce flocculation in the Cleaning liquid (CL).
16. The system according to any one of the preceding claims, Wherein the Washing unit (110) further comprises at least one of a brush, a gear holding basket, a rotating basket and a motor to rotate said basket, or an ultrasonic generating transducer.
17. A method for cleaning firefighting equipment (105) With a Washing unit (110), the Washing unit comprising a Washing chamber (101) With at least one inlet, and Wherein the Washing unit (110) is connected to a filter unit (150) through a discharge tube (120), the method (300) comprising the steps of: cleaning (310) the firefighting equipment (105) in the Washing unit (110) With a cleaning liquid (CL), thereby obtaining contaminated cleaning liquid (CCL); transporting (320) the contaminated cleaning liquid (CCL) from the Washing unit (110) to the filter unit (150) through the discharge tube (120); filtering (340) the contaminated cleaning liquid (CCL) through the filter unit (150) comprising at least a first filter (P1) and a second filter (P2), thereby obtaining a decontaminated cleaning liquid (DCL); and releasing (350) the decontaminated cleaning liquid (DCL) through a discharge outlet (170) of the filter unit (150).
18. The method according to claim 17, Wherein the step of releasing (350) the decontaminated cleaning liquid (DCL) is followed by a step of retuming (360) the decontaminated cleaning liquid (DCL) to the Washing unit (110) by connecting the discharge outlet (170) to the Washing unit (110).
19. The method according to any one of claims 17 to 18, fiarther comprising a step of pumping (330) the contaminated cleaning liquid (CCL) through at least one of the filters (P1, P2) in the filtering unit (150) using a pump (130).
20. The method according to any one of claims 17 to 19, Wherein the step of Cleaning (310) comprises soaking the protective equipment before the cleaning (310) begins, rotating the protective equipment (105) and/or spraying the protective equipment (105) With cleaning liquid (CL), brushing the protective equipment (105), or a combination thereof.
21. The method according to any one of claims 17 to 20, Wherein the cleaning (310) is conducted using ultrasonic cleaning.
22. The method according to any one of claims 17 to 21, Wherein the f1ref1ghting equipment is personal protection equipment used for f1ref1ghting.
23. The method according to any one of claims 17 to 22, comprising the step(s) of f1ltering off from the contaminated cleaning liquid (CCL) contaminants selected from the group consisting of heavy metals, perflourinated alkylated substances (PFAS), residuals from soot, other toxic or cancerous hydrocarbons or a combination thereof
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE2150542A SE546289C2 (en) | 2021-04-28 | 2021-04-28 | A system and a method for cleaning firefighting equipment |
| KR1020237040824A KR20240001227A (en) | 2021-04-28 | 2022-04-27 | Systems and methods for cleaning firefighting equipment |
| JP2023567044A JP2024522330A (en) | 2021-04-28 | 2022-04-27 | System and method for cleaning firefighting equipment |
| PCT/SE2022/050406 WO2022231504A1 (en) | 2021-04-28 | 2022-04-27 | A system and a method for cleaning firefighting equipment |
| AU2022268154A AU2022268154A1 (en) | 2021-04-28 | 2022-04-27 | A system and a method for cleaning firefighting equipment |
| EP22720084.7A EP4329895A1 (en) | 2021-04-28 | 2022-04-27 | A system and a method for cleaning firefighting equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE2150542A SE546289C2 (en) | 2021-04-28 | 2021-04-28 | A system and a method for cleaning firefighting equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| SE2150542A1 true SE2150542A1 (en) | 2022-10-29 |
| SE546289C2 SE546289C2 (en) | 2024-09-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE2150542A SE546289C2 (en) | 2021-04-28 | 2021-04-28 | A system and a method for cleaning firefighting equipment |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP4329895A1 (en) |
| JP (1) | JP2024522330A (en) |
| KR (1) | KR20240001227A (en) |
| AU (1) | AU2022268154A1 (en) |
| SE (1) | SE546289C2 (en) |
| WO (1) | WO2022231504A1 (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2208604A1 (en) * | 1994-12-23 | 1996-07-04 | Itu Ingenieurgemeinschaft Technischer Umweltschutz Gmbh | Method and device for purifying liquids, in particular polluted water for fighting fires |
| US5652966A (en) * | 1994-07-11 | 1997-08-05 | Reinert, Sr.; Gary L. | Reinforced full body suit |
| WO2006071828A1 (en) * | 2004-12-23 | 2006-07-06 | G & K Services, Inc. | Garment processing with biological sanitization and inspection procedures |
| US10294606B2 (en) * | 2015-06-03 | 2019-05-21 | Rud. Prey Gmbh & Co. Kg | Method and system for maintaining at least one protective suit |
| US20210016332A1 (en) * | 2018-03-28 | 2021-01-21 | Meiko Maschinenbau Gmbh & Co. Kg | Method and devices for cleaning at least one breathing apparatus |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5730878A (en) * | 1995-12-28 | 1998-03-24 | Rice; Terry | Contaminated waste-water treatment method and device |
| DE19641018A1 (en) * | 1996-10-07 | 1998-04-16 | Fiedler Maschinenbau Gmbh | Treating waste water, e.g. from gas pipe washing |
| DE102007009936B4 (en) * | 2007-03-01 | 2011-02-03 | Rainer Hoen | Cleaning device for compressed air breathing apparatus |
-
2021
- 2021-04-28 SE SE2150542A patent/SE546289C2/en unknown
-
2022
- 2022-04-27 EP EP22720084.7A patent/EP4329895A1/en active Pending
- 2022-04-27 AU AU2022268154A patent/AU2022268154A1/en active Pending
- 2022-04-27 KR KR1020237040824A patent/KR20240001227A/en unknown
- 2022-04-27 WO PCT/SE2022/050406 patent/WO2022231504A1/en active Application Filing
- 2022-04-27 JP JP2023567044A patent/JP2024522330A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5652966A (en) * | 1994-07-11 | 1997-08-05 | Reinert, Sr.; Gary L. | Reinforced full body suit |
| CA2208604A1 (en) * | 1994-12-23 | 1996-07-04 | Itu Ingenieurgemeinschaft Technischer Umweltschutz Gmbh | Method and device for purifying liquids, in particular polluted water for fighting fires |
| WO2006071828A1 (en) * | 2004-12-23 | 2006-07-06 | G & K Services, Inc. | Garment processing with biological sanitization and inspection procedures |
| US10294606B2 (en) * | 2015-06-03 | 2019-05-21 | Rud. Prey Gmbh & Co. Kg | Method and system for maintaining at least one protective suit |
| US20210016332A1 (en) * | 2018-03-28 | 2021-01-21 | Meiko Maschinenbau Gmbh & Co. Kg | Method and devices for cleaning at least one breathing apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022231504A1 (en) | 2022-11-03 |
| EP4329895A1 (en) | 2024-03-06 |
| SE546289C2 (en) | 2024-09-24 |
| JP2024522330A (en) | 2024-06-18 |
| AU2022268154A1 (en) | 2023-12-07 |
| KR20240001227A (en) | 2024-01-03 |
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