摘要
对预先经过生化工艺处理的PU合成革废水样品进行全分析表明,其总氮的主要存在形式为硝酸盐氮,质量浓度约为285 mg/L;采用缺氧MBR工艺对PU合成革废水生化出水进行了反硝化处理,结果表明:投加外部碳源,使原水C/N从1.6增大到3.3,可以实现约90.9%的总氮去除率;反硝化后的出水中硝氮仍是占比最大的组分,反硝化过程中发生亚硝氮的积累,但随着出水的C/N不断增大,反硝化效率不断提高。
An anaerobic moving bed biofilm reactor（ MBBR） is used to treat PU synthetic leather wastewater,in which the nitrate is the biggest concentration of total nitrogen. The results show that when C / N of wastewater is increased from 1. 6 to 3. 3,the removed nitrogen quantity and efficiency are simultaneously increased. The maximum removal efficiency and quantity of total nitrogen are 90. 9% and 192. 3 mg / L,respectively. The C / N is slowly increased when the performance of denitrification in anaerobic MBBR runs very well.
出处
《现代化工》
CAS
CSCD
北大核心
2016年第3期101-103,共3页
Modern Chemical Industry
基金
江苏省科技厅资助项目(BE2014616)
关键词
硝酸盐氮
A
MBBR
PU合成革废水
nitrate
anaerobic moving bed bio-film reactor（AMBBR）
PU synthetic leather wastewater
