摘要
对预先去除了SS和SO4^2-后赖氨酸浓废水和稀废水的NH3-N进行处理，采用浓废水（pH为12．5～13．0）空气吹脱-厌氧-兼氧-混合解脱废水（pH为11．0），空气再吹脱．混合反洗废水好氧一混合糖化废水A／O^2-膜生物反应器等方法处理。结果表明，浓废水NH3-N的质量浓度由4808mg／L最终降至71mg/L，去除率98．52％。最终出水NHrN的质量浓度〈15mg／L，符合GB8978—2002一级排放标准，反硝化脱氮率77．1％。对2次空气吹脱之NH3，采用罐封连管引风机装置抽吸回收，与H2SO4反应生成（NH4）2SO4，回用于生产，回收产品的产值扣除废水处理成本后，年收益103．56万元。
Lysine production concentrated wastewater was pretreated to remove the SS and SO4^2-, and then the pretreated wastewater was treated to remove the NH3-N. The method of concentrated wastewater （pH 12.5 - 13.0） air rectification-anaerobic-facultative-mixed extrication wasteveater （pH 11.0）, and air rectification again-mixed backwashing-mixed saccharification wastewater A/O^2 MBR were used. The results show that the NH3-N concentration was decreased from 4 808 mg/L to below 15 mg/mL, which met the first class discharge standard of GB 8978- 1996. The denitrifying denitrification rate was 77.1%, and annual earnings was 1.0356 million Yuan.
出处
《水处理技术》
CAS
CSCD
北大核心
2014年第3期129-132,共4页
Technology of Water Treatment
关键词
赖氨酸废水
氨氮
A
O^2
膜生物反应器
综合处理
lysine production wastewater
ammonia nitrogen
A/O：
membrane bioreactor （MBR）
comprehensive treatment
