Device and method used for processing salt-containing aqueous solution through high and low temperature gas stepped processing

Abstract

The invention discloses a device and a method used for processing salt-containing aqueous solution through high and low temperature gas stepped processing. The device comprises a low temperature gas concentration system, a high temperature gas drying system, and a dedusting system; the low temperature gas concentration system comprises a low temperature gas concentration tower and a concentrationtower slurry pool; the low temperature gas concentration tower is provided with a low temperature gas inlet, and a saturated wet gas outlet; a brine spraying pipe and a concentration spraying pipe arearranged in the low temperature gas concentration tower; the high temperature gas drying system comprises a high temperature gas drying bed; the high temperature gas drying bed is connected with theconcentration tower slurry pool through a strong brine discharge pipe; a high temperature gas inlet, a dried exhaust gas outlet, and a drying spraying pipe are arranged in the high temperature gas drying bed; the dedusting system comprises a main flue and a deduster; the deduster is arranged on the main flue between the saturated wet gas outlet and the dried exhaust gas outlet. The method can be used for effective processing of substances such as factory waste water and salt-containing products, realizing water-free discharge, and reducing operation energy consumption, and is low in water quality requirement, and low in equipment failure rate.

Description

technical field [0001] The invention relates to the field of water treatment, in particular to a treatment device and a treatment method for saline solution. Background technique [0002] With the development of human society and the process of industrialization, the quality of water environment is getting worse and worse, and the shortage of water resources is becoming more and more serious. The problem of water environment is becoming more and more prominent, which in turn restricts the development of society and economy. Sewage treatment is an important measure to protect the urban and rural environment. Sewage treatment is a necessary requirement for building a resource-saving and environment-friendly society. [0003] Saline solutions, especially waste liquids, are difficult to dispose of in industrial processes, as well as wastewater treatment. Conventional water treatment ideas are to remove suspended solids in water, adjust pH value and clarify water quality, but t...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a device and method for cascade treatment of saline solution using high and low temperature gas, so as to solve the problem that conventional water treatment methods cannot handle salt, and the use of reverse osmosis membrane to treat saline solution has high failure rate, high energy consumption, Technical issues requiring high adaptability to water quality

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