JPH05169070A - Method for reduction of heavy metal especially soitable for diagnosis of dentist - Google Patents

Abstract

PURPOSE: To provide a method for reducing the heavy metal, for example, amalgam, included in the waste water discharged from the medical examination by a dentist which obviates the formation of a soluble compd., for example, mercury ions, like a separator for the amalgam used in the case of the conventional medical examination by the dentist relating to the method for reducing the heavy metal, for example, the amalgam, described above.

CONSTITUTION: A specifically formed medicine is used at the time of mending and washing of, for example, appliances and apparatus. The pH value of the environment of this time is maintained at 9 to 13 at an alkaline level. A component for taking out the heavy metal impurity by utilizing absorbency and ion exchangeability or a component for taking out the heavy metal impurity by a chemical effect is included in the medicine for this purpose. A surfactant, sterilizer, defoaming agent, color additive and/or arom. additive may be included in the medicine.

COPYRIGHT: (C)1993,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is intended to reduce the content of heavy metals in waste water generated in dentistry, for example, during rinsing, cleaning and cleaning of instruments and devices, and keeping alkalinity. Considering the use of special reducing agents in different environments.

It has been attempted in the past to capture amalgams, alloys of mercury and other metals, originating from dentist practice and polluting public drainage with separators. For example, amalgam separators for capturing amalgam debris are manufactured by various companies and have the necessary permits. However, when using amalgam separators, the formation of soluble mercury compounds or mercury ions and finely dispersed solid mercury compounds or mercury is not completely associated with chemicals used in other non-dentist practice areas. Highly toxic substances can enter the public sewage since they are not excluded.

[0003] The invention is concerned here with, for example, during routine care, the drug, which is considered on demand, is inhaled by the suction device and the Speischalenbereich region and the parts which are placed behind it, for example Put in separator, p
By keeping the H value at an alkaline level, preferably between 9 and 13. The heavy metal reducing agent considered for this purpose is, in addition to the builder, a specific active ingredient for absorbing a substance containing a heavy metal, that is, absorbability,
It contains active ingredients that act by ion exchange or chemical bonding. As the active ingredient, for example, a powdered cation exchange resin (for example, Levatite TP214 as a commercial product) in which styrene divinylbenzene containing a thioureido group is based is considered. Commercial products of betonite or acid clay type clay minerals, such as silitonite, are considered to have an absorbing effect, and carbamates or halogens, such as potassium iodide, are considered to form a chemical bond. All three components can be used alone or together. The agents used preferably contain surfactants, germicides, defoamers, color additives and / or fragrance additives.

Anti-foaming agents are, on the one hand, fast-acting agents (based on silicone emulsions, for example dimethylpolysiloxane emulsions having a viscosity of 1 to 5), and on the other hand act according to chain length. As a matrix for the antifoaming agent used for adjusting the time, delaying agents such as polyethylene glycol or ethyleneoxy adducts come into consideration. It is preferred that at least one representative drug of each of these two types is used. The builder in the drug consists of sodium metakenate and potassium carbonate, borate or hydroxide. Nonionic surfactants are used to aid in cleaning. Acids other than oxygen, such as peracetic acid, or acid salts and quaternary ammonium compounds come into consideration as germicidal components. Amphoteric surfactants having a bactericidal effect and fungicides other than chlorine are suitable. The agents envisaged for heavy metal reduction are used in solid form, for example as granules or powders, or in liquid form, with water as solvent. A general composition in the form of powder or granules is, for example, as follows.

30-95% by weight of builder and up to 5% by weight respectively of surfactants, bactericides, gradual and fast acting defoamers, color and fragrance additives, and heavy metal absorbing or ion exchange. A component that is chemically absorbed by.

In this case, the above percentages represent very high concentrations. Although the concentration can be increased without producing problems, this does not make it an effective preparation suitable for examination. Particularly suitable formulations for solid formulations are sodium metakenate 83% by weight alkali carbonate 3 nonionic surfactant 3 dichloroisocyanate 3 milled levatite TP214 2 silitonite 1 potassium iodide 2 aid 3 agents and methods In one embodiment, the drug is introduced into a cartridge connected to the drainage conduit of the dental instrument. The liquid heavy metal reducing agent has the following constitution. Cleaning component 92% by weight 50% silitonite dispersion 2 50% levitite dispersion 4 potassium iodide 2

When the drug is used, the component having absorbed the heavy metal is stored as a solid in the storage container of the amalgam separator. The absorbed heavy metal is added to the contents of the storage container to further treat the wastewater.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hartmut Brech, Germany, Day -7957 Schemmerhofen 4, Am Sonnenrain 11 (72) Inventor Michael Grimm, Germany, Day 7930 Aingen , Drosselbeek 1 (72) Inventor Her Jürgen Zimmermar Kuckle, Germany-7930 Eingen, Am Ramminger 17

Claims (4)

[Claims] 1. In addition to a builder, a drug containing a specific component that absorbs a substance containing a heavy metal by ion exchange or absorption, or chemically bonds, is post-applied to the suction device region, the spitton region, and the region. Method for reducing heavy metals in wastewater of dentist's practice, characterized in that it is introduced into a controlled part, for example a separator, and the pH value is kept at an alkaline level, preferably between 9 and 13. 2. The method for reducing heavy metals according to claim 1, wherein the agent contains a surfactant, a bactericide, a defoaming agent, a color activator and / or an aroma activator. 3. The drug contains at least two substances having a defoaming action, that is, a fast-acting substance, and the other substance having a specific action time adjusted to each usage range. Claim 1 characterized by the above.
Or the heavy metal reduction method described in 2. 4. The method for reducing heavy metals according to claim 1, wherein the chemical contains potassium iodide.