Concentrated discharge water re-concentrating apparatus

Abstract

The invention relates to a concentrated discharge water re-concentrating apparatus, which at least comprises: a concentrated water collecting box, a high density pool pretreatment unit CP, a gas floating filtering pool unit DAF, a two-stage filtering membrane unit MC and a frequent electrodialysis reversal unit EDR, wherein the concentrated water collecting box for collecting concentrated discharge water is connected to the high density pool pretreatment unit CP, the concentrated discharge water collected by the concentrated water collecting box is conveyed to the high density pool pretreatment unit CP, the high density pool pretreatment unit CP for pre-treating the concentrated discharge water is connected to the gas floating filtering pool unit DAF, the gas floating filtering pool unit DAF is connected to a first-stage filtering membrane unit MC1, and the first-stage filtering membrane unit is connected to a second-stage filtering membrane unit MC2.

Description

technical field [0001] The invention relates to a concentrated drainage re-concentration device, in particular to a concentrated drainage re-concentration 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...

AI Technical Summary

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.