摘要
针对辛辣类调味品废水对微生物产生抑制导致生化处理困难的现状,进行了AAOO短时好氧工艺与A^(2)O工艺的中试实验,比较2种工艺在去除COD、NH_(4)^(+)-N、TP上的差异,并研究了辣椒素对未强化活性污泥的抑制作用。结果表明:AAOO短时好氧工艺较A^(2)O工艺处理辛辣类调味品废水优势明显,对COD、NH_(4)^(+)-N、TP和辣椒素的平均去除率分别达到95.6%、90.1%、96.7%和90.9%;AAOO短时好氧工艺分池培养优势菌种以实现高效脱氮除磷,装置连续稳定运行80 d,出水COD、NH_(4)^(+)-N、TP数值稳定在55、6.5、0.5 mg/L以下,满足GB 8978-1996中一级排放标准;AAOO装置出水生物抑制性物质浓度稳定在0.6 mg/L以下,说明该工艺对辣椒素类废水有一定的抗冲击能力。研究结果可为处理辛辣类废水提供重要参考及AAOO短时好氧工艺的应用提供思路。
In view of the current situation of inhibiting microorganisms in spicy condiment wastewater leading to difficulties in biochemical treatment,pilot experiments of AAOO short-time aerobic unit and A2O unit were conducted to compare the differences between the two processes in the removal of COD,NH_(4)^(+)-N and TP,and to investigate the inhibitory effect of capsaicin on unenhanced activated sludge.The results showed that the AAOO short-time aerobic process had obvious advantages over the traditional A2O process in treating spicy condiment wastewater under optimal conditions,with average removal rates of 95.6%,90.1%,96.7% and 90.9% for COD,NH_(4)^(+)-N,TP and capsaicin,respectively.The dominant strains of AAOO short-time aerobic process were cultured in separate ponds to achieve efficient nitrogen and phosphorus removal.The unit ran continuously and stably for 80 days,and the effluent COD,NH_(4)^(+)-N and TP values were stable below 55,6.5 and 0.5 mg/L,meeting the GB8978-1996 primary discharge standard.The concentration of bioinhibitory substances in the effluent from AAOO plant is stable below 0.6 mg/L,indicating that the process has certain impact resistance ability to capsaicin wastewater.The results of this study provide an important reference for the treatment of pungent wastewater and an idea for the application of AAOO short-time aerobic process.
作者
马迁
闫宝亨
杨洋
李增辉
戴捷
涂军桥
MA Qian;YAN Baoheng;YANG Yang;LI Zenghui;DAI Jie;TU Junqiao(College of Chemistry and Environment Engineering,Yangtze University;Jingzhou Ecological Environment Information and Testing Assessment Center:Jingzhou 434000,China)
出处
《水处理技术》
CAS
CSCD
北大核心
2024年第2期111-115,共5页
Technology of Water Treatment
基金
国家自然科学基金(21173026)
湖北省自然科学基金重点项目(2013CFA107)
荆州市科技项目(2019EC61-14)。
关键词
辛辣类废水
AAOO短时好氧工艺
辣椒素
脱氮除磷
抑制性实验
spicy wastewater
AAOO Short-time aerobic process
capsaicin
nitrogen and phosphorus removal
inhibition experiments
