环渤海盐碱地区模拟生活污水冷冻处理试验  

Effects of Freezing Technology on Qualities of Domestic Sewage in the Saline-Alkali Areas of Bohai Bay

作　　者：张晓庆[1,2] 许映军[1] 顾卫[1] 卜丹阳[1,2] 陶军[1] 常志云[1,2] 

机构地区：[1]北京师范大学,地表过程与资源生态国家重点实验室,北京100875 [2]北京师范大学,民政部/教育部减灾与应急管理研究院,北京100875

出　　处：《环境科学研究》2012年第9期1030-1034,共5页Research of Environmental Sciences

基　　金：地表过程与资源生态国家重点实验室资助项目(2009-RC-01);高校博士点基金资助项目(20090003110025);国家高技术发展计划(863)项目(2011AA100505)

摘　　要：为了探索环渤海地区污水资源化的过程,基于冷冻技术,通过模拟生活污水人工冷冻试验,研究了冷冻温度、污染物初始浓度、机械搅拌等因素对环渤海盐碱地区生活污水冰融水水质的影响,同时考察了人工冷冻试验对含盐生活污水中CODCr与NH3-N处理效果的影响.结果表明:在-11～-2℃的室内人工低温环境中,冷冻法可使污水中CODCr与NH3-N的去除率分别达到80%和85%以上;冷冻温度越低,污水冷冻速率越快,CODCr和NH3-N的去除率越低;污染物浓度越高,污水冰融水水质越差;机械搅拌对污水处理效果的影响不很明显.For wastewater reuse in areas of the Bohai Bay, the effects of freezing temperature, pollutant concentration and mechanical stirring on the quality of sewage ice water, and the effects of artificial freezing on removal of CODcr and NH3-N in domestic sewage in saline-alkali areas of the Bohai Bay, were studied by laboratory experimentation. The results showed that the artificial domestic sewage was perfectly purified by the freezing technology. At a temperature between - 11 ℃ and - 2 ℃ , the removal efficiencies of CODcr and NH3-N in the sewage ice water were above 80% and 85% , respectively. When the temperature became lower, the domestic sewage froze faster, and the removal efficiencies of CODcr and NH3-N decreased as well. Additionally, the higher the concentration of pollutants in the sewage water, the worse the melting ice water quality was. Mechanical stirring did not affect the water quality significantly.

关 键 词：生活污水 人工冷冻 自然冷能 冰融水 

分 类 号：X502[环境科学与工程—环境工程]