DE2803531A1 - Sealing soil surfaces against penetration of water-soluble waste - by treatment with silicate, acid, and organo-silicon cpd. - Google Patents
Sealing soil surfaces against penetration of water-soluble waste - by treatment with silicate, acid, and organo-silicon cpd.Info
- Publication number
- DE2803531A1 DE2803531A1 DE19782803531 DE2803531A DE2803531A1 DE 2803531 A1 DE2803531 A1 DE 2803531A1 DE 19782803531 DE19782803531 DE 19782803531 DE 2803531 A DE2803531 A DE 2803531A DE 2803531 A1 DE2803531 A1 DE 2803531A1
- Authority
- DE
- Germany
- Prior art keywords
- water
- acid
- silicate
- surfaces against
- organo
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K17/00—Soil-conditioning materials or soil-stabilising materials
- C09K17/40—Soil-conditioning materials or soil-stabilising materials containing mixtures of inorganic and organic compounds
- C09K17/42—Inorganic compounds mixed with organic active ingredients, e.g. accelerators
- C09K17/46—Inorganic compounds mixed with organic active ingredients, e.g. accelerators the inorganic compound being a water-soluble silicate
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Soil Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
Description
Verfahren zur Abdichtung von Bodenoberflächen gegen wasser-Process for sealing floor surfaces against water
lösliche Auslaugstoffe aus deponierten Abfällen Die vorliegende Erfindung betrifft ein Verfahren zur Abdichtung von Bodenoberflächen gegen wasserlösliche Auslaugstoffe aus deponierten Abfällen zur Verhinderung der Grundwasserkontaminierung.Soluble Leachates From Landfilled Wastes The present invention relates to a method for sealing soil surfaces against water-soluble ones Leachates from landfilled waste to prevent groundwater contamination.
Bei der endgültigen oder auch der zeitweiligen Ablagerung von Abfällen, die auslaugbare Inhaltsstoffe enthalten, ist dafür zu sorgen, daß durch das Auswaschen dieser löslichen Materie nicht Grundwasser unterhalb der Ablagerungsstelle kontaminiert werden kann.In the case of permanent or temporary disposal of waste, which contain leachable ingredients, care must be taken to ensure that they are washed out this soluble matter does not contaminate groundwater below the disposal site can be.
Hier=u sind zur Zeit mehrere Verfahren bekannt. Man kann zur Ablagerung ein Gelände wählen, unter dem kein Grundwasser vorhanden ist, z.B. in Ariden oder Gebirgsgegenden. Vielfach verwendet man z.B. eine Grube, die durch unter- und umliegenden wasserundurchlässigen Ton isoliert ist. Weiter kann man vor der Ablagerung eine ausreichende Schicht eines Materials ausbreiten, das die Auslaugstoffe fällt, neutralisiert oder adsorbiert, z.B. Kalk. Außerdem kann man die Bodenfläche durch Aufbringen von Beton, Asphalt oder einer Folie gegen Wasser undurchlässig machen.Several methods are currently known here. One can go to the deposit choose a terrain under which there is no groundwater, e.g. in Ariden or Mountain areas. A pit is often used, for example, through the underlying and surrounding waterproof clay is insulated. You can also use a Spread sufficient layer of material that will fall off the leachate, neutralize it or adsorbed, e.g. lime. You can also increase the floor area by applying Make concrete, asphalt or a film impermeable to water.
Alle diese bekannten Verfahren haben Vor- und Nachteile. Grundwasserfreie oder durch Ton gegen Grundwasser abgedichtete Ab lagerungsplätze sind oft nicht vorhanden. Die Abdichtung mit Beton, Asphalt oder Folie ist teuer und braucht Zeit. Oft ist aber die Zeit knapp, besonders wenn schnell ein Platz zur Zwischenlagerung von Rückständen hergerichtet werden muß. Besonders diesem Bedarf Genüge zu tun, ist die Aufgabe der vorliegenden Erfindung.All of these known methods have advantages and disadvantages. Groundwater-free or storage areas sealed against groundwater by clay are often not available. Sealing with concrete, asphalt or foil is expensive and takes time. But time is often short, especially when a place for temporary storage is quick must be prepared from residues. To meet this need in particular, is the object of the present invention.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß die Bodenoberfläche vor der Ablagerung der Abfälle mit einer Alkali- oder Erdalkalisilicatlösung, dann mit Säureüberschuß behandelt wird, und anschließend ein Organosilikon, -silikonat, -polysilikon mit funktionellen Gruppen, die mit Hydroxylgruppen reagieren können, aufgetragen wird.This object is achieved according to the invention in that the floor surface before depositing the waste with an alkali or alkaline earth silicate solution, then is treated with excess acid, and then an organosilicon, organosiliconate, -polysilicon with functional groups with hydroxyl groups can react, is applied.
Beispielsweise wird die Oberfläche eines Deponiebodens mit Natriumsilikatlösung besprüht, anschließend mit verdünnter Säure (meist Ameisensäure) im Überschuß getränkt, wobei ein Polysilikat gebildet wird: Dieses gebildete Polysilikat hat zwei Funktionen; es dient 1. als Verfestigungsmittel und 2. als Grundierung und Haftvermittler für das anschließend aufzubringende Silikon.For example, the surface of a landfill floor is sprayed with sodium silicate solution, then soaked in excess dilute acid (usually formic acid), whereby a polysilicate is formed: This formed polysilicate has two functions; it serves 1. as a solidifying agent and 2. as a primer and adhesion promoter for the silicone to be applied subsequently.
Dieses Silikon kann nach 3 Verfahren aufgebracht werden: 1. durch Besprühen mit trifunktionellem monomerem Organosilan, wie z.B. CH3SiC13 (Lacksilan der Wacker-Chemie), CH3SiHC12, C2H5SiCl3 usw.; 2. durch Behandeln der Fläche mit einer Organosiliconatlösung, z.B. Natrium- oder Kalium-Methylsilikonat (BS15 der Wacker-Chemie GmbH); 3. durch Aufbringen einer Silikonharzemulsion, z.B. BS96 der Wacker-Chemie GmbH; durch Auftragen einer Silikonharzlösung, z.B. WACKER l90F der Wacker-Chemie GmbH.This silicone can be applied by 3 methods: 1. by Spraying with trifunctional monomeric organosilane, such as CH3SiC13 (Lacksilan der Wacker-Chemie), CH3SiHC12, C2H5SiCl3 etc .; 2. by treating the area with an organosiliconate solution, e.g. sodium or potassium methyl siliconate (BS15 der Wacker-Chemie GmbH); 3. by applying a silicone resin emulsion, e.g. BS96 der Wacker-Chemie GmbH; by applying a silicone resin solution, e.g. WACKER l90F der Wacker-Chemie GmbH.
Die Hydroxylgruppen der Silikatschicht reagieren dabei mit den funktionellen Gruppen des Silans oder polykondensieren mit den Silanolgruppen, wobei stabile Siloxanbindungen mit den eingesetzten Organosilikonen entstehen und eine dauerhafte Hydrophobierung erzielt wird.The hydroxyl groups of the silicate layer react with the functional groups of the silane or polycondense with the silanol groups, with stable siloxane bonds with the organosilicones used and permanent hydrophobization is achieved.
Die zu wählende Variante hängt ab von der Bodenbeschaffenheit, vor allem der Festigkeit und dem Bodendurchlässigkeitswert und der angestrebten Wasserundurchlässigkeit .The variant to be selected depends on the nature of the soil especially the strength and the soil permeability value and the desired impermeability to water .
Die Methode der erfindungsgemäßen Vorbehandlung der Erdoberfläche steht in Konkurrenz zur Abdichtung durch Ausmauerung, Asphaltierung oder Folienabdeckung. Gegenüber diesen Methoden bietet sie drei Vorteile. Sie ist 1. schneller 2. meist billiger und behindert 3. nicht den Luftaustausch der getrennnten Schichten, so daß Atmungsvorgänge und eventueller aerober Abbau organischer Substanzen weitergehen können und somit Fäulnis vorgänge verhindert werden.The method of pretreatment of the earth's surface according to the invention competes with sealing by bricklaying, asphalting or film covering. It has three advantages over these methods. It is 1. faster 2. mostly cheaper and 3. does not hinder the exchange of air between the separated layers, so that respiratory processes and possible aerobic degradation of organic substances continue can and thus putrefaction processes can be prevented.
4. Die Bodenfestigkeit wird meßbar verbessert.4. The soil strength is measurably improved.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19782803531 DE2803531A1 (en) | 1978-01-27 | 1978-01-27 | Sealing soil surfaces against penetration of water-soluble waste - by treatment with silicate, acid, and organo-silicon cpd. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19782803531 DE2803531A1 (en) | 1978-01-27 | 1978-01-27 | Sealing soil surfaces against penetration of water-soluble waste - by treatment with silicate, acid, and organo-silicon cpd. |
Publications (1)
Publication Number | Publication Date |
---|---|
DE2803531A1 true DE2803531A1 (en) | 1979-08-02 |
Family
ID=6030530
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19782803531 Withdrawn DE2803531A1 (en) | 1978-01-27 | 1978-01-27 | Sealing soil surfaces against penetration of water-soluble waste - by treatment with silicate, acid, and organo-silicon cpd. |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE2803531A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0292941A3 (en) * | 1987-05-27 | 1990-03-21 | & Widmann Aktiengesellschaft Dyckerhoff | Arrangement for retaining contaminants from contaminated landfill leachates with an inorganic sealing layer and method of manufacturing said layer |
FR2680530A1 (en) * | 1991-08-21 | 1993-02-26 | Sol Cie | Underground pollution-proof (pollution-inhibiting) barrier |
DE4313931A1 (en) * | 1993-04-28 | 1994-11-03 | Dyckerhoff & Widmann Ag | Arrangement for retaining the pollutants from polluted landfill leachate waters |
-
1978
- 1978-01-27 DE DE19782803531 patent/DE2803531A1/en not_active Withdrawn
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0292941A3 (en) * | 1987-05-27 | 1990-03-21 | & Widmann Aktiengesellschaft Dyckerhoff | Arrangement for retaining contaminants from contaminated landfill leachates with an inorganic sealing layer and method of manufacturing said layer |
FR2680530A1 (en) * | 1991-08-21 | 1993-02-26 | Sol Cie | Underground pollution-proof (pollution-inhibiting) barrier |
WO1993004237A1 (en) * | 1991-08-21 | 1993-03-04 | Compagnie Du Sol | Underground pollution control barrier |
DE4313931A1 (en) * | 1993-04-28 | 1994-11-03 | Dyckerhoff & Widmann Ag | Arrangement for retaining the pollutants from polluted landfill leachate waters |
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Legal Events
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8130 | Withdrawal |