Abstract: Bromamine acid (1-amino-4-bromo-anthraquinone-2-sulfonic acid sodium) aqueous solution was selected as the sample in this study. Separation of organic matter in bromamine acid aqueous solution by natural cold energy in winter，and the change of organic matter in freezing field were investigated. The results indicated that the ice sample can be obviously divided into four layers as slightly polluted layer，clean layer，mixed layer and precipitated layer after bromamine acid aqueous solution was completely frozen. With the increase of initial concentration，the organic removal rate decreased in the slightly polluted layer. In the clean layer，with the initial concentration from 50mg/L to 4000mg/L，its volume decreased from 76.5％ to 35.3％ of the total sample volume，and its total organic carbon (TOC) kept at 6 mg/L，not affected by the initial concentration less than 2000mg/L. The slightly polluted layer can be eliminated by introducing seed ice at the solution critical temperature，and the optimal pre-cooling temperature was 1℃. There was no significant impact on freezing separation when introducing seed ice at difference initial concentrations. In the same freezing conditions，ice layer was separated，and residual solution was frozen again repeatedly. In this process，bromamine acid was separated in the form of solid granules. With repeated separation and freezing，the organic matter removal rate decreased in the ice sample separated.

摘要： 以含溴氨酸（1-氨基-4-溴-蒽醌-2-磺酸钠）的水溶液为研究对象，利用北方冬季自然冷能冷冻分离含有机物水溶液，研究有机物的冷冻分凝规律。试验结果表明，溴氨酸水溶液完全冻结后，其冰样可明显分为4层：微污染层、洁净层、混合层和析出层。微污染层冰融水随溶液初始浓度的增大而有机物的去除率下降；洁净层随着溶液初始浓度从50 mg/L增大到4000 mg/L，其体积从占冰样总体积的76.5％降低到35.3％，但其水质不受溶液初始浓度（<2000 mg/L时）的影响，其TOC值保持在6 mg/L左右；在溶液临界温度下加入种冰可消除微污染层，加入种冰时溶液的最佳预冷温度为1 ℃。溶液在不同初始浓度下，加入种冰对冷冻分离效果无明显影响；在相同冷冻条件下，不断分离析出冰层，反复冷冻剩余母液，在冷冻过程中，溴氨酸以颗粒形式析出，析出冰样冰融水水质随着冷冻次数的增加有机物去除率减小。