Normal-temperature evaporation zero-emission treatment system and treatment method for high-salinity wastewater

Abstract

The invention relates to a wastewater discharge treatment system and treatment method, in particular to a normal-temperature evaporation zero-discharge treatment system and treatment method for high-salinity wastewater, and belongs to the technical field of water treatment. The system comprises a raw water tank, the raw water tank is connected with a solid-liquid separation tank through a raw water lifting pump, liquid in the solid-liquid separation tank is connected with a normal-temperature evaporator through a circulating water pump, an induced draft fan used for sucking ambient air is arranged in the normal-temperature evaporator, and solid in the solid-liquid separation tank is discharged out of the system through a centrifugal dehydrator. Dry ambient air is introduced, hot air is used as a carrier, and high-efficiency heat transfer and mass transfer processes are carried out between the hot air and the wastewater in the normal-temperature evaporation unit, so that continuous evaporation and crystallization treatment of the high-salinity wastewater under normal-temperature and normal-pressure conditions is realized. The crystals are dewatered by the centrifugal dewatering unit and then discharged out of the device. The process has the advantages of capability of recycling waste heat resources, stability and reliability in equipment operation, low system operation cost, high automation degree, simplicity in operation and maintenance and the like.

Description

technical field [0001] The invention relates to a waste water discharge treatment system and treatment method, in particular to a high-salt waste water normal temperature evaporation zero discharge treatment system and treatment method, belonging to the technical field of water treatment. Background technique [0002] In recent years, with the development of industrial and agricultural production and the improvement of urban people's living standards, the discharge of industrial wastewater and urban sewage is increasing. The resulting environmental pollution has seriously affected environmental ecology and human health, especially high-salt discharge of waste water. High-salt wastewater refers to wastewater containing at least 3.5% total dissolved solids TDS (Total Dissolved Solid), which mainly comes from high-salt wastewater generated during industrial production. High-salt wastewater contains a large amount of inorganic salts, such as Cl-, SO 4 2 -, Na+, Ca 2 + Plasma...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to propose a zero-emission treatment system and treatment method for high-salt wastewater evaporation at room temperature to achieve zero-emission treatment in view of the high cost of wastewater treatment in the prior art and the defects that easily lead to scaling of equipment

Images