High-salinity wastewater flash evaporation and concentration system coupled with solar heat collection

Abstract

The invention provides a high-salinity wastewater flash evaporation concentration system coupled with solar heat collection, which is characterized by comprising a solar heat collector, a first watertank, a second water tank, a heat exchanger, a first flash evaporation chamber, a second flash evaporation chamber, a third flash evaporation chamber, a first demister, a second demister, a third demister, a first condensation chamber, a second condensation chamber, a third condensation chamber, a vacuum pump, a condensation water tank and a fresh water tank, wherein the first water tank and the second water tank are connected with the solar heat collector; the first water tank and the second water tank are controlled by valves to achieve storage and circulation of hot water and cold water, waste water is sprayed out of the nozzles and enters the flash chambers to be subjected to atomization flash evaporation, the first-stage flash chamber, the second-stage flash chamber and the third-stage flash chamber are connected in series, each flash chamber is directly connected with the condensation chamber, and the first-stage condensation chamber, the second-stage condensation chamber and thethird-stage condensation chamber condense steam into water. The system needs less equipment, effectively avoids scaling in the pipe, reduces the occupied area of the equipment, reduces the investmentand operation cost, and provides a new technical scheme for low-energy-consumption and high-efficiency wastewater concentration.

Description

technical field [0001] The invention belongs to the technical field of waste water concentration, and in particular relates to a high-salt waste water flash concentration system coupled with solar heat collection. Background technique [0002] Printing and dyeing, papermaking, chemical industry, oil refining, seawater utilization and other fields produce a large amount of high-salt wastewater. High-salt wastewater refers to wastewater with a total salt content of not less than 1%. The discharge of high-salt wastewater pollutes soil, rivers and lakes, and wastes water and salt resources. Therefore, zero-discharge treatment of high-salt wastewater is required. Wastewater zero discharge means that after the wastewater is treated, the salts and pollutants in the wastewater are separated from the wastewater, and they are discharged into the power plant in solid form for treatment or recycled, and the fresh water produced is reused to achieve no wastewater discharge Technology. ...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problems existing in the prior art, the object of the present invention is to provide a high-salt wastewater flash concentration system coupled with solar heat collection, which can effectively avoid problems such as membrane fouling and pipeline scaling in the wastewater concentration process, At the same time, it can improve thermal efficiency, thereby effectively reducing energy consumption

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