TH11957EX - Process for treating water containing sulfur compounds. - Google Patents

Abstract

A process for processing water containing sulphides, which oxidizes sulphides in anaerobic reactors, has been provided with low sulphide content in the apparatus. The low level of sulphides contained at least 10 mg of sulfide per mg of nitrogen present in the sludge per hour, calculating the sulfide content based on the biomol fraction. Oxidizing Sulfide Low sulfide content may likewise be preferable to 25mg of sulfide per liter of reactor material per hour, can oxidize sulfide fraction. Into the sulfur element which is separated and reused Wastewater containing organic material in addition to various levels of sulfides can be purified without being disturbed by the strains of bacteria using a two-step anaerobic process. The sulphide removal process can be performed with wastewater containing high levels of sulfur compounds such as sulfates, sulphides and thiosulfates, with the first reduction of these sulfur compounds. In the non-air stage Metal is removed from water by adding sulfide to the water to precipitate metals. Sulfide can be added by reducing pre-existing sulfur compounds.

Claims (2)

1. A process for purifying sulphide water, which oxidizes sulfide to sulfur in a reactor at pH not more than 9 using sludge containing aerobic bacteria, which is characterized by Specifically, the sludge contained at least 10 mg of the sulfur per mg of the estrogen contained in the sludge per hour, calculated using the oxidized fraction. The sulphides of sludge are basic. 2. Process according to claim 1, which contains the amount of salad used