酒精（乙醇）生产高盐高COD高氨氮废水蒸发浓盐渣资源化_道川环保，道川环保生物技术（上海）有限公司，道川工业废水处理，道川资源化利用，上海环保设备厂家，上海工业废液处理公司，道川环保解决方案，道川环保技术服务

酒精（乙醇）生产高盐高COD高氨氮废水蒸发浓盐渣资源化

酒精（乙醇）生产产生的废水为特高浓度有机废水，COD含量80000~120000mg/L，**达170000mg/L，硫酸根（SO₄²⁻）5000~8000mg/L，**12000mg/L，还含大量固体悬浮物及糖类、果胶、蛋白质等溶解性有机污染物，同时富含氨氮（NH₃-N）。经蒸发器蒸发脱水后，浓缩液及浓盐渣（呈棕褐色或浅棕褐色）主要成分为：无机盐（65%~75%）、有机残渣（20%~25%）、杂质（5%~10%）。

高价值物料回收：有机物料中，回收果胶（C₁₇H₂₂O₁₁）、蛋白质（C₄₀H₆₃O₁₂N₁₁），经提纯后用作食品添加剂、饲料原料；无机盐中，回收硫酸钠（Na₂SO₄，纯度98.9%以上）、硫酸铵（(NH₄)₂SO₄，纯度99.2%以上），作为工业级副产品，用于化工、建材、肥料等领域。

通过浓缩、分离、富集、萃取、结晶、提纯等工艺，实现有机、无机物料资源化，仅微量无利用价值杂质按危险废物规范处置，真正实现浓液盐渣“变废为宝”，大幅降低处置成本，兼顾环保达标与经济效益提升，助力酒精企业绿色循环发展。

Resource Utilization of Evaporated Concentrated Salt Residue from High-Salt, High-COD and High-Ammonia Nitrogen Wastewater in Alcohol Production

The wastewater from alcohol production is ultra-high concentration organic wastewater, with COD content of 80000~120000mg/L (up to 170000mg/L), sulfate (SO₄²⁻) of 5000~8000mg/L (up to 12000mg/L), containing a large amount of suspended solids, soluble organic pollutants such as carbohydrates, pectin and protein, as well as high ammonia nitrogen (NH₃-N). After evaporation and dehydration by evaporator, the concentrate and concentrated salt residue (brown or light brown) are mainly composed of: inorganic salts (65%~75%), organic residues (20%~25%), and impurities (5%~10%).

Recovery of high-value materials: Among organic materials, pectin (C₁₇H₂₂O₁₁) and protein (C₄₀H₆₃O₁₂N₁₁) are recovered and purified for use as food additives and feed raw materials; among inorganic salts, sodium sulfate (Na₂SO₄, purity above 98.9%) and ammonium sulfate ((NH₄)₂SO₄, purity above 99.2%) are recovered as industrial by-products for chemical industry, building materials, fertilizers and other fields.

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