甲壳素壳聚糖生产高盐高COD废水蒸发浓盐渣资源化
甲壳素壳聚糖生产高盐高COD废水蒸发浓盐渣资源化
甲壳素、壳聚糖生产产生的高盐、高COD、高氨氮废水，经酸碱及蛋白质回收后，蒸发器蒸发脱水的浓缩液/浓盐渣主要成分为：有机组分（35%-45%）、无机盐（40%-50%）、少量杂质（5%-15%）。其中高价值有机物料包括壳聚糖（C6H11NO4）ₙ（20%-25%）、氨基酸混合物（8%-12%）、乙酸（CH3COOH）（5%-8%）；无机盐物料包括氯化钙（CaCl2）（18%-22%）、氯化钾（KCl）（12%-15%）、氯化铵（NH4Cl）（8%-10%）。
通过浓缩、分离、富集、萃取、结晶、提纯纯化等工艺，可将上述物料转化为工业级副产品：有机物料中，壳聚糖用于食品添加剂、水处理吸附剂，氨基酸混合物用于饲料添加剂，乙酸用于化工合成；无机物料中，氯化钙用于建材凝结剂，氯化钾用于农用钾肥，氯化铵用于化工原料。仅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，兼具显著环保效益与经济效益，助力企业绿色低碳高质量发展。
甲壳素壳聚糖生产高盐高COD废水蒸发浓盐渣资源化
甲壳素、壳聚糖生产产生的高盐、高COD、高氨氮废水，经酸碱及蛋白质回收后，蒸发器蒸发脱水的浓缩液/浓盐渣主要成分为：有机组分（35%-45%）、无机盐（40%-50%）、少量杂质（5%-15%）。其中高价值有机物料包括壳聚糖（C6H11NO4）ₙ（20%-25%）、氨基酸混合物（8%-12%）、乙酸（CH3COOH）（5%-8%）；无机盐物料包括氯化钙（CaCl2）（18%-22%）、氯化钾（KCl）（12%-15%）、氯化铵（NH4Cl）（8%-10%）。
通过浓缩、分离、富集、萃取、结晶、提纯纯化等工艺，可将上述物料转化为工业级副产品：有机物料中，壳聚糖用于食品添加剂、水处理吸附剂，氨基酸混合物用于饲料添加剂，乙酸用于化工合成；无机物料中，氯化钙用于建材凝结剂，氯化钾用于农用钾肥，氯化铵用于化工原料。仅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，兼具显著环保效益与经济效益，助力企业绿色低碳高质量发展。
Resource recovery of concentrated salt residue from evaporation of high-salt and high-COD wastewater in chitin and chitosan production
The high-salt, high-COD and high-ammonia nitrogen wastewater generated from chitin production, after acid-base and protein recovery, the concentrated liquid/concentrated salt residue from evaporator dehydration mainly consists of: organic components (35%-45%), inorganic salts (40%-50%), and a small amount of impurities (5%-15%). The high-value organic materials include chitosan (C6H11NO4)ₙ (20%-25%), amino acid mixture (8%-12%), acetic acid (CH3COOH) (5%-8%); inorganic salt materials include calcium chloride (CaCl2) (18%-22%), potassium chloride (KCl) (12%-15%), ammonium chloride (NH4Cl) (8%-10%).
Through processes such as concentration, separation, enrichment, extraction, crystallization, purification and refinement, the above materials can be converted into industrial-grade by-products: among organic materials, chitosan is used as food additive and water treatment adsorbent, amino acid mixture as feed additive, and acetic acid for chemical synthesis; among inorganic materials, calcium chloride is used as building material coagulant, potassium chloride as agricultural potassium fertilizer, and ammonium chloride as chemical raw material. Only valueless impurities are disposed of in accordance with hazardous waste regulations, truly realizing the "turning waste into treasure" of concentrated liquid and salt residue, greatly reducing disposal costs, with significant environmental and economic benefits, helping enterprises achieve green, low-carbon and high-quality development.
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