Patent ID: 7585460
Filing Date: 2009-09-08
Classification: A01N,C02F,Y10S

Abstract:
1. A method for inhibiting biological acidification of water that contacts materials containing sulfur in reduced form or elemental sulfur, the materials being susceptible to oxidation by Thiobacilli , the method comprising: bringing the materials into contact with a soluble inorganic salt; wherein: the soluble inorganic salt comprises chlorides, sulfates or nitrates of mono- or bivalent cations; the soluble inorganic salt is applied in an amount sufficient to provide a concentration of the soluble inorganic salt in the water of from 0.4 normal to saturation; bringing the materials into contact with a soluble inorganic salt comprises spreading the soluble inorganic salt over the materials, and subsequently spreading a cover over the materials; and the cover consists of granulated materials optionally containing small quantities of hydraulic binders.