兰炭废水中氨氮去除效果现场试验研究  

Field tests on ammonia nitrogen removing effect in semi-coke wastewater

作　　者：童三明 刘永军[1] 杨义普 刘在堂 贾建军 

机构地区：[1]西安建筑科技大学环境与市政工程学院,陕西西安710055 [2]神木恒源煤化工有限公司,陕西榆林719000 [3]神木县产业办,陕西榆林719000

出　　处：《工业水处理》2014年第11期48-50,共3页Industrial Water Treatment

基　　金：榆林市科技局项目(K03260);神木县产业办项目(K03286)

摘　　要：采用氨氮吹脱—生物絮体吸附—混凝沉淀—改性兰炭吸附的组合工艺对兰炭废水中的氨氮去除效果进行了研究,并进行了现场试验。结果表明：在p H=11,温度35℃,气液比为6 000的条件下,氨氮的吹脱去除率为85%;投加活性污泥,控制废水MLSS为5 g/L,连续曝气12 h,控制聚合硫酸铁投加质量浓度为1.0~1.5 g/L,p H为6.5~7.5,氨氮去除率为80%;沉淀后出水用改性兰炭吸附,出水氨氮降至10~20 mg/L,氨氮去除率可达到99.5%。The combined process,ammonia stripping-biological floccules adsorption-coagulating precipitation-modified semi-coke adsorption has been used for studying the ammonia nitrogen removing effect,and field tests have been conducted. The results shows that when p H is 11,temperature 35 ℃,gas liquid ratio 6 000,the stripping removing rate of ammonia is 85%. By adding activated sludge,controlling the wastewater MLSS as 5 g/L,continuously aerating for 12 h,controlling the mass concentration of polymeric ferric sulfate as 1.0-1.5 g/L,and p H as 6.5-7.5,the ammonia nitrogen removing rate is 80%. After precipitation,the effluent can be further adsorbed by modified semi-coke. As a result,the effluent content of ammonia nitrogen reduces to 10-20 mg/L,and ammonia nitrogen removing rate can reach 99.5%.

关 键 词：兰炭废水 氨氮去除 生物絮体 沉淀 吸附 

分 类 号：X703[环境科学与工程—环境工程]