Waste acid and waste saline treatment system with combination of inorganic synthesis and carbon absorption and waste acid and waste saline treatment method with combination of inorganic synthesis and carbon absorption

Abstract

The invention provides a waste acid and waste saline treatment system with combination of inorganic synthesis and carbon absorption and a waste acid and waste saline treatment method with combination of inorganic synthesis and carbon absorption. The waste acid and waste saline treatment system comprises a waste saline pool, a waste acid pool, a chlorine gas synthesis tower, a filtering component and an active-carbon-absorption chlorine gas tower, wherein the waste saline pool is used for storing waste saline; the waste acid pool is used for storing waste acid liquor; the chlorine gas synthesis tower is used for treating the waste saline and the waste acid under a vacuum state; the filtering component is used for filtering the waste liquor after treatment of the chlorine gas synthesis tower; the active-carbon-absorption chlorine gas tower is used for purifying chlorine gas after treatment of the chlorine gas synthesis tower; the inlet of the chlorine gas synthesis tower is connected with the outlet of the waste saline pool and a waste acid pipeline, and a waste liquid outlet of the chlorine gas synthesis tower is connected with the filtering component, and the chlorine gas outlet of the chlorine gas synthesis tower is connected with the active-carbon-absorption chlorine gas tower. The waste acid and waste saline treatment system provided by the invention has the advantages that the combination of an inorganic synthesis technology and an active-carbon absorption technology is adopted, and the problem of waste water treatment in a sponge titanium project is fundamentally solved.

Description

technical field [0001] The invention relates to the technical field of waste liquid treatment, in particular to a waste acid and waste brine treatment system and method combining inorganic synthesis and carbon adsorption. Background technique [0002] In the process of producing sponge titanium by magnesia thermal method, waste brine will be produced in the tail gas washing system of magnesium electrolysis process, and waste hydrochloric acid will be produced in the chlorination refining system. These waste liquids must be properly treated to ensure that they will not pollute the environment. At the same time, when recycling these waste liquids, some chemical raw materials (such as hydrochloric acid and NaCl) can also be recovered, and the waste acid and waste brine can be changed from acidic waste water and oxidative waste brine into industrial water, resulting in obvious economic and environmental impacts. and social benefits. [0003] The existing titanium sponge produc...

AI Technical Summary

Problems solved by technology

It can be seen that the existing titanium sponge production process will produce waste acid and waste brine in the production process of chlorination refining and magnesium electrolysis.

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