摘要
以某制革厂污水站活性污泥为菌源,利用曝气设备,研究了不同有机负荷(OLR)对模拟制革废水氨氮氧化速率(AOR)的影响。结果显示,零有机负荷运行10d后,氨氮去除率达到99.6%,AOR也逐步升高至5.6mg/(gh),是高OLR(6g/(Ld))下AOR的10倍。当OLR不超过2.4时,AOR仍保持在5.5mg/(gh)以上,可实现氨氮和COD的同步去除。当OLR达到3.0时,AOR显著降低,不利于氨氮的氧化去除。
The effect of different organic load rates(OLR)on ammonia-oxidation rate(AOR)of simulated tannery wastewater was investigated in the aeration device,using the activated sludge from a tannery wastewater treatment plant as the seed sludge.The results showed that the removal of ammonium(NH3-N)was 99.6%after 10 days under zero OLR.Meanwhile,AOR gradually increased to 5.6 mg/(gh),which was 10 times greater than that at OLR of 6.0 g/(Ld).AOR remained at over 5.5 mg/(gh),and NH3-N and COD were removed simultaneously when OLR was no more than 2.4 g/(Ld).However,AOR was declined remarkably under OLR of 3.0 g/(Ld),which made a negative impact on the oxidation removal of NH3-N.
作者
马小剑
王亚楠
石碧
MA Xiaojian;WANG Yanan;SHI Bi(National Engineering Laboratory for Clean Technology of Leather Manufacture,Sichuan University,Chengdu 610065,China;Maydiang (Sihong) Leather Ltd.,Suqian 223900,China;Key Laboratory of Leather Chemistry and Engineering (Sichuan University),Ministry of Education,Chengdu 610065,China)
出处
《皮革科学与工程》
CAS
北大核心
2019年第4期10-14,共5页
Leather Science and Engineering
基金
德阳市开放式校市合作科技成果转化项目(2018CKCSD025)
皮革化学与工程教育部重点实验室(四川大学)开放课题基金(20826041C4159)
关键词
制革废水
有机负荷
好氧
氨氮
COD
tannery wastewater
organic load rate
aerobic
ammonium
COD
