CH658996A5 - Process for the restoration of the environment during the removal of sprayed asbestos - Google Patents
Process for the restoration of the environment during the removal of sprayed asbestos Download PDFInfo
- Publication number
- CH658996A5 CH658996A5 CH493285A CH493285A CH658996A5 CH 658996 A5 CH658996 A5 CH 658996A5 CH 493285 A CH493285 A CH 493285A CH 493285 A CH493285 A CH 493285A CH 658996 A5 CH658996 A5 CH 658996A5
- Authority
- CH
- Switzerland
- Prior art keywords
- spray
- asbestos
- binder
- removal
- air
- Prior art date
Links
- 239000010425 asbestos Substances 0.000 title claims abstract description 38
- 229910052895 riebeckite Inorganic materials 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title claims description 17
- 239000011230 binding agent Substances 0.000 claims abstract description 32
- 239000007921 spray Substances 0.000 claims abstract description 32
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000000835 fiber Substances 0.000 claims description 20
- 238000007790 scraping Methods 0.000 claims description 6
- 238000005507 spraying Methods 0.000 claims description 6
- 238000010521 absorption reaction Methods 0.000 claims description 4
- 238000005067 remediation Methods 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 229910001868 water Inorganic materials 0.000 claims description 4
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 2
- 230000001419 dependent effect Effects 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims description 2
- 229910052744 lithium Inorganic materials 0.000 claims description 2
- 239000003595 mist Substances 0.000 claims description 2
- 230000001717 pathogenic effect Effects 0.000 claims description 2
- 229910052700 potassium Inorganic materials 0.000 claims description 2
- 239000011591 potassium Substances 0.000 claims description 2
- 235000019353 potassium silicate Nutrition 0.000 claims description 2
- 239000003380 propellant Substances 0.000 claims description 2
- 230000002685 pulmonary effect Effects 0.000 claims description 2
- 238000009877 rendering Methods 0.000 claims description 2
- 229910052708 sodium Inorganic materials 0.000 claims description 2
- 239000011734 sodium Substances 0.000 claims description 2
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 2
- 239000011248 coating agent Substances 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- 210000004072 lung Anatomy 0.000 abstract 1
- 239000012634 fragment Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B99/00—Subject matter not provided for in other groups of this subclass
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D51/00—Auxiliary pretreatment of gases or vapours to be cleaned
- B01D51/02—Amassing the particles, e.g. by flocculation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
- B09B3/0066—Disposal of asbestos
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/32—Safety or protective measures for persons during the construction of buildings
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/08—Wrecking of buildings
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Health & Medical Sciences (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- General Health & Medical Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Electrochemistry (AREA)
- Working Measures On Existing Buildindgs (AREA)
Abstract
In order to avoid endangering the health of people due to asbestos fibres in the lungs during the removal of the sprayed asbestos coating, the air in the environment of the site of removal is subsequently sprayed with a binder spray. A suitable binder spray is a hardenable silicate binder which is capable of wrapping and enveloping airborne asbestos fibres during hardening. Particularly suitable is a silicate binder having a pH of between 8 and 14.
Description
**WARNUNG** Anfang DESC Feld konnte Ende CLMS uberlappen **.
PATENTANSPRÜCHE
1. Verfahren zur Sanierung der Umgebung bei der Entfernung von Spritzasbest, dadurch gekennzeichnet, dass man im Bereich der Entfernungsstelle von Spritzasbest die Luft mit einem erhärtenden Bindemittelspray behandelt, die Asbestfasern bindet und die Lungengänglichkeit inhibiert.
2. Verfahren nach Patentanspruch 1, dadurch gekennzeichnet, dass man die Luft mit einem Bindemittelspray behandelt, welchen die Asbestfasern zu absorbieren vermögen.
3. Verfahren nach den Patentansprüchen 1 und 2, dadurch gekennzeichnet, dass man die Luft mit einem Bindemittelspray behandelt, der eine Härtungsgeschwindigkeit besitzt, welche die Absorbierung durch die Asbestfasern ermöglicht.
4. Verfahren nach den Patentansprüchen 1 bis 3, dadurch gekennzeichnet, dass man die Luft mit einem Silikatbindemittel behandelt.
5. Verfahren nach den Patentansprüchen 1 bis 4, dadurch gekennzeichnet, dass man einen Silikatbinder mit einem pH Wert zwischen 8 und 14 verwendet.
Die Entfernung von Asbestspritzbelägen in Gebäuden hat sich wegen der lungengängigen Asbestfasern als hygienisches Gebot erwiesen, nachdem anerkannt ist, dass die Nachteile die wärme- und feuertechnischen Vorteile beträchtlich überwiegen. Die Entfernung erfolgt durch manuelles oder mechanisches Abkratzen des Asbestspritzbelages von den Wänden resp. Decken. Beim Eintritt in die Arbeitszone der Abkratzung schützten sich die Arbeiter dabei mit Masken, man erzeugte unter Mitwirkung von Sauggeräten einen Unterdruck und sicherte den Zugang durch Schleusen.
Es gelingt trotz aller Aufwendigkeit nicht, abfallende Asbestfasern, insbesondere diejenigen welche in der Luft schweben, restlos zu beseitigen und die Entfernungsarbeit ungefährlich zu machen.
Gegenstand der vorliegenden Erfindung ist ein Verfahren zur Sanierung der Umgebung bei der Entfernung von Spritzasbest nach dem Oberbegriff des Patentanspruches 1.
Derselben liegt die Aufgabe zugrunde, die beim Abkratzen des Asbestspritzbelages abfallenden, lungengängigen, krankheitserregenden, in der Luft schwebenden Asbestfasern auf eine einfache, wirksame, schnelle, billige und gründliche Weise unschädlich zu machen.
Erfindungsgemäss wird diese Aufgabe durch die im Kennzeichen des Patentanspruches 1 definierten Merkmale gelöst. Vorteilhafte Ausführungsmöglichkeiten des Verfahrens ergeben sich aus der folgenden Beschreibung desselben und den abhängigen Patentansprüchen 2 bis 5.
Beispiel
Nach der Abkratzung eines Asbestspritzbelages behandelt man die Luft im Bereich der Entfernungsstelle und deren Umgebung mit einem Bindemittelspray. Dies wird durch ein Zersäubungsgerät vorgenommen, bei welchem Bindemittel durch eine Düse zersprüht wird. Das Zerstäubungsgerät ist konventioneller Bauart und kann ein Behälter mit Treibgas und Sprühventil, eine Spritzpistole, eine Druckluftpistole oder eine elektrische Spritzpistole sein. Der Bindemittelspray im Zerstäubungsgerät ist ein Silikatbinder, wie Wasser-, Kali-, Natron-, Doppelwasser-, Lithiumwasserglas oder dergleichen. Erforderlich ist ein relativ rasch aushärtender, jedoch die Absorbierung durch die Asbestfasern zulassender Bindemittelspray.
Durch den zersprühten Spray werden die Asbestfasern eingepackt resp. ummantelt und auch vorhandene mikroskopische, quastenförmige Aussplitterungen und Feinstfibrellen werden dabei gebunden. Die ausgehärteten Tröpfchen des Bindemittelspray, welche die Asbestfasern enthalten, lassen sich relativ leicht und sicher als unschädliche Teile absetzen und ausfiltrieren. Besonders geeignet ist ein Silikatbinder mit einem pH-Wert zwischen 8 und 14.
Ausser Silikatbinder sind andere Bindemittel zur Ausführung des Verfahrens geeignet, welche beim Zersprühen einen Flüssigkeitsnebel erzeugen und die Bindung von Asbestfasern bewirken.
** WARNING ** beginning of DESC field could overlap end of CLMS **.
PATENT CLAIMS
1. A process for the remediation of the environment in the removal of spray asbestos, characterized in that in the area of the removal point of spray asbestos, the air is treated with a hardening binder spray, which binds asbestos fibers and inhibits pulmonary mobility.
2. The method according to claim 1, characterized in that the air is treated with a binder spray, which the asbestos fibers are able to absorb.
3. The method according to claims 1 and 2, characterized in that the air is treated with a binder spray which has a hardening rate which enables absorption by the asbestos fibers.
4. The method according to claims 1 to 3, characterized in that the air is treated with a silicate binder.
5. The method according to claims 1 to 4, characterized in that one uses a silicate binder with a pH between 8 and 14.
The removal of asbestos spray deposits in buildings has proven to be a hygienic requirement because of the respirable asbestos fibers, after it has been recognized that the disadvantages outweigh the thermal and fire advantages. The removal is done by manual or mechanical scraping of the asbestos spray coating from the walls or. Cover. When entering the scraping work zone, the workers protected themselves with masks, a vacuum was created with the help of suction devices, and access was secured through locks.
Despite all the effort, it is not possible to completely remove falling asbestos fibers, especially those that are suspended in the air, and to make the removal work harmless.
The present invention relates to a method for the remediation of the environment in the removal of spray asbestos according to the preamble of claim 1.
The same is based on the task of rendering the asbestos fibers falling, respirable, pathogenic and floating in the air when scraping off the asbestos spray coating harmless in a simple, effective, fast, cheap and thorough manner.
According to the invention, this object is achieved by the features defined in the characterizing part of patent claim 1. Advantageous possible embodiments of the method result from the following description of the same and the dependent patent claims 2 to 5.
example
After an asbestos spray coating has been scraped off, the air in the area of the removal point and its surroundings is treated with a binder spray. This is done by a atomizing device, in which binder is sprayed through a nozzle. The atomizer is of conventional design and can be a container with propellant gas and spray valve, a spray gun, a compressed air gun or an electric spray gun. The binder spray in the atomizing device is a silicate binder, such as water, potassium, sodium, double water, lithium water glass or the like. What is required is a binder spray which hardens relatively quickly, but which allows absorption by the asbestos fibers.
The sprayed spray wraps the asbestos fibers or encased and also existing microscopic, tassel-shaped fragments and fine fibrelles are bound. The hardened droplets of the binder spray, which contain the asbestos fibers, can be deposited and filtered out relatively easily and safely as harmless parts. A silicate binder with a pH between 8 and 14 is particularly suitable.
In addition to silicate binders, other binders are suitable for carrying out the process, which when sprayed produce a liquid mist and bind asbestos fibers.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH493285A CH658996A5 (en) | 1985-11-19 | 1985-11-19 | Process for the restoration of the environment during the removal of sprayed asbestos |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH493285A CH658996A5 (en) | 1985-11-19 | 1985-11-19 | Process for the restoration of the environment during the removal of sprayed asbestos |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH658996A5 true CH658996A5 (en) | 1986-12-31 |
Family
ID=4285044
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH493285A CH658996A5 (en) | 1985-11-19 | 1985-11-19 | Process for the restoration of the environment during the removal of sprayed asbestos |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH658996A5 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0331166A2 (en) * | 1988-03-04 | 1989-09-06 | Taisei Corporation | Process for separation of asbestos-containing material and prevention of floating of dust |
| EP0351440A1 (en) * | 1988-07-20 | 1990-01-24 | KLUGE UMWELTSCHUTZ GmbH | Process to incorporate disposable asbestos-containing rubble in concrete bodies, and apparatus for carrying out the process |
-
1985
- 1985-11-19 CH CH493285A patent/CH658996A5/en not_active IP Right Cessation
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0331166A2 (en) * | 1988-03-04 | 1989-09-06 | Taisei Corporation | Process for separation of asbestos-containing material and prevention of floating of dust |
| EP0331166A3 (en) * | 1988-03-04 | 1990-05-16 | Taisei Corporation | Process for separation of asbestos-containing material and prevention of floating of dust |
| EP0351440A1 (en) * | 1988-07-20 | 1990-01-24 | KLUGE UMWELTSCHUTZ GmbH | Process to incorporate disposable asbestos-containing rubble in concrete bodies, and apparatus for carrying out the process |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DD143561A5 (en) | METHOD AND DEVICE FOR REGENERATING FOUNDRY-ALTSAND | |
| DE3505675A1 (en) | METHOD FOR REMOVING SURFACES | |
| DE2511181A1 (en) | Cleaning of waste gases - esp. from paint-drying ovens using oil as solvent for contaminants | |
| CH658996A5 (en) | Process for the restoration of the environment during the removal of sprayed asbestos | |
| DE4112445C1 (en) | Removal of weathered asbestos fibres - involves cooling to below 0 deg. C, spraying on water and allowing ice to melt | |
| AT158307B (en) | Process for treating glass fibers and glass fibers made therefrom. | |
| AT252091B (en) | Process for the production of water-repellent, expanded granular perlite | |
| DE68903487T2 (en) | METHOD AND DEVICE FOR THE REUSE OF FALSE CEILINGS MADE FROM PANELS CONTAINING MINERAL OR SYNTHETIC FIBERS. | |
| DE2354213A1 (en) | SOLUTION AND PROCEDURE FOR THE PROTECTION OF BUILDINGS | |
| DE3908913C1 (en) | Process for the disposal of asbestos-containing dusts | |
| DE500687C (en) | Process for lining steel or similar pipes with coating materials and the device used for this purpose | |
| DE2945300C2 (en) | Process for treating the surface of wood made fire-resistant | |
| DE3415174C2 (en) | ||
| DE2044528A1 (en) | Spraying of glass or basalt - onto surfaces | |
| DE2404133A1 (en) | PROCESS FOR THE REMOVAL OF WATER-INSOLUBLE SUBSTANCES, IN PARTICULAR OIL, FROM WATER SURFACES AND ABSORBANTS USED FOR THEREFORE | |
| DE2404702C2 (en) | Process and device for cleaning and cooling used foundry sand by dry mechanical treatment by means of friction | |
| EP0414244A2 (en) | Sealant mortar for spayed asbestos-cement coatings | |
| EP0754089B1 (en) | Method of purifying oven exhaust gases | |
| DE3345820A1 (en) | Mobile plant for the removal of expanded perlite or similar heat insulation materials | |
| DE19504547C2 (en) | Lime as rust protection | |
| AT154887B (en) | Method for separating suspended particles from gas or vapors and device for carrying out the same. | |
| DE744630C (en) | Lubricant for die forging | |
| DE3100882A1 (en) | Process for the surface treatment of expanded perlite grains | |
| DD286189A5 (en) | PROTECTIVE AGAINST HOLES OR FINISHING AGAINST DECOMPOSITION IN THE HEAT TREATMENT OF COMPONENTS | |
| DE1221387B (en) | Process for the production of water-repellent expanded, granular perlite |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PL | Patent ceased |