Desalination reuse apparatus of water treatment apparatus

Abstract

The invention relates to a desalination reuse apparatus. The desalination reuse apparatus of the water treatment apparatus comprises: a concentrated water collection box, an agent feeding unit, an efficient precipitation pool, a sand filtering unit, an ultra-filtration unit, a plastic security filter, a two-stage reverse osmosis unit, a frequent electrodialysis reversal unit, an evaporation crystallization unit and a water producing unit, wherein the concentrated water collection box for collecting sewage is connected to the efficient precipitation pool, the efficient precipitation pool is connected to the sand filtering unit, the sand filtering unit is connected to the ultra-filtration unit, the ultra-filtration unit is connected to the plastic security filter, the plastic security filteris connected to the two-stage reverse osmosis unit, the two-stage reverse osmosis unit is respectively connected to the frequent electrodialysis reversal unit and the water producing unit, and the frequent electrodialysis reversal unit is respectively connected to the evaporation crystallization unit and the water producing unit.

Description

technical field [0001] The invention belongs to a water treatment and reuse device, in particular to a desalination and reuse device for a water treatment device. Background technique [0002] High-salt wastewater refers to wastewater with a total saline mass fraction ≥ 1%, which is generally refractory wastewater. Especially concentrated industrial brine, which contains high concentrations of inorganic salts and a large amount of refractory organic or toxic substances, if such wastewater is directly discharged into natural water bodies without treatment, it will inevitably affect aquatic organisms, drinking water and industrial and agricultural production. Water use will cause great harm and will cause huge pressure on the ecological environment. The treatment methods in use can be roughly divided into biological treatment methods and physical and chemical methods. At present, the more common ones are distillation desalination method, adsorption method, membrane method, r...

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Problems solved by technology

Simple structure, easy operation, good fresh water quality, etc., but there are disadvantages such as high investment cost, large floor area, high energy consumption, etc.