1. Mixed salt wastewater: mixed wastewater of sodium chloride and sodium sulfate (such as coal chemical wastewater) 2. Potassium salt resource utilization: pharmaceutical wastewater containing potassium sulfate and organic wastewater containing salt 3. Lithium battery production wastewater: ammonium chloride, ammonium sulfate wastewater (ternary precursor, lithium iron phosphate production), battery grade lithium hydroxide solution 4. High COD organic wastewater: raw material waste acid, fermentation broth 5. Liquid food concentrate: fruit juice, dairy products, seasonings, soup ingredients 6. Plant extracts: starch sugar, jam, plant extracts 7. Electroplating wastewater and smelting waste liquid containing chloride/sulfate 8. High risk waste liquid applicable materials: electroplating waste liquid, developer solution, spray circulating water.