Review of Heat Exchanger Fouling Mechanism and Anti-Scaling Technology in High-Salt Industrial Wastewater Concentration Process

Abstract:

High-salt wastewater treatment is the one hot research field in the environmental industry. Its characteristics of high organic matter， high salt content， and high hardness limit the wastewater treatment process. Thermal evaporation is necessary since the national requirement of pollutants， i.e.， ‘Zero Emission’ is proposed. The scaling problem of heat exchanger has brought huge problems to the industrial production chain. How to solve the scaling problem of heat exchanger and put forward effective scale inhibition technology for high salt wastewater has， therefore， become a research hotspot. This paper mainly introduces the scaling mechanism and influencing factors of high salt wastewater in industrial treatment. It also summarizes and analyzes the existing scale inhibition technologies， so as to provide theoretical support for future research of scaling， descaling， and scale inhibition of high salt wastewater heat exchangers.

Key words:high-salt wastewater;scaling;scale inhibition;heat exchanger