Brackish water recycling device

Abstract

The invention discloses a brackish water recycling device. The device comprises a water taking system, a first buffer tank, a primary filtering system, a second buffer tank, a photocatalytic reactor,an ultrasonic treatment system, a membrane separation unit, a sterilization system and a water storage tank which are sequentially connected through pipelines. By means of the unique structural design, up-to-standard discharge of effluent can be guaranteed, and meanwhile energy consumption can be reduced; in a brackish water treatment process, through sufficient pretreatment, the pollution problemof a treatment membrane can be alleviated to a great extent, and the treatment effect and the service life of the treatment membrane are improved; and in addition, according to the brackish water recycling device, multiple processes are ingeniously combined, brackish water with different water qualities can be treated, different brackish water desalination requirements can also be met, and brackish water recycling with different requirements is achieved.

Description

technical field [0001] The invention relates to the technical field of brackish water treatment, in particular to a brackish water reuse device. Background technique [0002] The water quality indicators of groundwater and surface water in most saline-alkali land areas are mostly lower than the indicators of Class III water in the "Surface Water Environmental Quality Standards", showing the characteristics of brackish water, which has a greater impact on local agriculture and residents' lives. The current desalination methods for brackish water mainly include distillation and membrane separation. Distillation is gradually being eliminated due to its high energy consumption and low efficiency; membrane separation includes electrodialysis, reverse osmosis, nanofiltration, ultrafiltration, etc. The membrane separation method has been relatively mature in the desalination of brackish water, but there is also the problem of membrane fouling caused by poor pretreatment effect, whi...

AI Technical Summary

Problems solved by technology

The current desalination methods for brackish water mainly include distillation and membrane separation. Distillation is gradually being eliminated due to its high energy consumption and low efficiency; membrane separation includes electrodialysis, reverse osmosis, nanofiltration, ultrafiltration, etc. The membrane separation method has been relatively mature in the desalination of brackish water, but there is also the problem of membrane fouling caused by poor pretreatment effect, which affects the service life and treatment effect of the membrane; and the existing brackish water desalination The technology often focuses on a single technology or a combination of typical processes. These technologies are specific to the brackish water to be treated, and it is difficult to adapt to the different treatment requirements of different water qualities.

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