Process for the treatment of waste products
AssigneeHydromex Inc.
InventorsDennie E. Pridemore, Harald W. Kremnitz
Life of this patent
Estimating the term…
Abstract
In this process for the treatment of waste products, the waste products are separated in a first and a second group with respective pH-value of maximum 7 or higher than 7. The waste products of the first group are made increasingly acid whereas those of the second group are basified. This is done by adding an acid to the first group and a base to the second group in order to obtain a pH-value of maximum 5 for the first group and a pH-value of minimum 8 for the second group. An oxidant and metallic precipitating reagents are added to the first group of waste products. The thus treated waste products are combined in an alkaline mixture that is absorbed in a polymeric matrix by adding reaction components for the formation of a polymeric matrix.
Claims20
A process for the treatment of waste products, of the type comprising:
- first, separating liquid and solid waste products;
- and
- second, adding a means for formation of a polymeric matrix such that said waste products are absorbed in the chain of said polymeric matrix;
- characterized by:
- prior to said second step, further dividing said liquid wastes into a first group of liquids with a pH-value of 7 at the most, and a second group of liquids with a pH-value higher than 7;
- (a) preparing a first mixture by adding to the first group of liquids:
- (i) pH adjusting means sufficient to produce a resulting pH-value of no more than 5;
- (ii) oxidant;
- and
- (iii) metallic precipitating means sufficient to precipitate metals;
- (b) preparing a second mixture of said solid waste products and liquid of said first mixture;
- and
- adding pH adjusting means sufficient to produce a resulting pH-value of at least 8 in the second mixture;
- (c) preparing a third mixture of said second group of liquids and the second mixture;
- (i) allowing the second group of liquids and second mixtures to react;
- and
- (ii) adding pH adjusting means sufficient to produce a resulting pH-value of at least 7;
- and
- wherein, said means for formation of a polymeric matrix of said second step are added to said third mixture.
A process for chemical, thermal and mechanical treatment of wastes, wherein said wastes include a comminuted solid waste portion and a liquid waste portion, comprising:
- forming a first mixture by combining said liquid waste portion, inorganic acid, and an oxidant;
- forming a second mixture of said comminuted solid waste portion and said first mixture;
- and
- forming a third mixture of said second mixture and a phase transition catalyst.
A process for the treatment of waste products, of the type comprising:
- first, separating liquid and solid waste products;
- and
- second, adding a means for formation of a polymeric matrix such that said waste products are absorbed in the chain of said polymeric matrix;
- characterized by:
- prior to said second step, further dividing said liquid wastes into a first group of liquids with a pH-value of 7 at the most, and a second group of liquids with a pH-value higher than 7;
- (a) preparing a first mixture by adding to the first group of liquids:
- (i) pH adjusting means sufficient to produce a resulting pH-value of no more than 5;
- (ii) oxidant;
- and
- (iii) metallic precipitating means sufficient to precipitate metals;
- (b) preparing a second mixture of said solid waste products and liquid of said second group;
- and
- adding pH adjusting means sufficient to produce a resulting pH-value of at least 8 in the second mixture;
- (c) preparing a third mixture of said first mixture and the second mixture;
- (i) allowing the first and second mixtures to react;
- and
- (ii) adding pH adjusting means sufficient to produce a resulting pH-value of at least 7;
- and
- wherein, said means for formation of a polymeric matrix of said second step are added to said third mixture.
Dependencies are inferred from the claim text.