A new type of technology for treating high salinity and high COD wastewater Wuhan Huake Tianyuan Environmental Protection Technology Co., Ltd. has encountered complicated problems in high-salt, high-COD and high-calcium content in various wastewater treatments such as chemical, non-ferrous smelting and landfill leachate. After years of research and practice, the unit has mastered A related art solution now provides a sharing of practical techniques for such wastewater treatment. Welcome the same and different opinions of experts to exchange corrections: Zhao Gong COD≥30000mg/L Total salt≥50000mg/L PH≤1 H2SO3≥1% Total hardness≥1000mg/L Generally speaking, the above indicators will not appear at the same time, and the process combination can achieve better results according to different situations. Waste water ↓ CaCO3 neutralization ↓ Solid-liquid separation→Industrial calcium sulfate products ↓ CaOH reaction ↓ Solid-liquid separation→solid waste ↓ CO2 softening ↓ ↓ COD extraction→ concentrated liquid coal burning ↓ Chemical pretreatment ↓ MVR-T facility→Industrial salt ↓ Reuse ↠biochemistry ↓ Discharge 4, the process description Similar waste water by the neutralization reaction CaCO₃ water H ₂ SO ₄ into CaSO ₄ precipitate calcium sulfate component extracting useful solid-liquid separation, wastewater into the next step with Ca (OH) ₂ and a further reaction H₂SO₃, the neutralization process and wastewater It contains a lot of hardness, and the hardness will adversely affect all processes in the subsequent order. Therefore, the wastewater after the neutralization reaction needs to be softened by the CO2 softening method to ensure that no new ions are introduced and enter the wastewater. The post-sequence treatment is affected. After softening, the wastewater is COD extraction technology, which will affect the temperature rise and evaporation efficiency. The COD substance is extracted and concentrated, and then mixed with coal for incineration. The raffinate enters the MVR-T evaporator crystallized industrial salt, and the condensate enters other Re-use after water point reuse or biochemical treatment. 5, summary According to the practical application of Wuhan Huake Tianyuan Company, the process has strong adaptability and practicability, and the operating cost is generally lower than 50 yuan/ton, which has great significance for such wastewater treatment. If in doubt, Zhao Gong Research unit: Wuhan Huake Tianyuan Environmental Protection Technology Co., Ltd. Ungrouped,High Quality Ungrouped,Ungrouped Details, CN Shenzhen Guangyang Zhongkang Technology Co., Ltd. , https://www.szlighttherapymachine.com Solid-liquid separation→Industrial CaCO3 finished product