Research Progress on Propellant Wastewater Treatment Methods

The main treatment techniques of propellant wastewater, including red smoke nitric acid oxidant wastewater, hydrazine fuel wastewater, mixed amine and fuel wastewater, were reviewed. The mechanism, treatment effect, advantages and disadvantages of various methods were summarized and analyzed. The physical method is inefficient, the chemical method is prone to secondary pollution, and the biodegradation method has a long period. From an economic and safety point of view, the method of biodegradation or physico-chemical-biological joint treatment is more effective.