摘要
通过人工投加4种典型药物及个人护理品(PPCPs)对活性污泥系统进行破坏性试验,评估PPCPs的种类和浓度对生物脱氮过程中污泥活性的毒性效应,并对活性污泥系统在PPCPs刺激下有机物降解、硝化及反硝化能力的变化进行比较,分析电子传递体系(TTC-ETS)活性、比氧摄取速率(SOUR)、氨摄取速率(AUR)、活菌/死菌比值(Ratio_(G/R)),以此来表征PPCPs在活性污泥系统中产生毒性的灵敏度,判断其作为毒性效应评估指标的可行性。结果表明:不同方法所确定的PPCPs毒性顺序基本一致,其对活性污泥系统的抑制作用大小为甲氧苄啶(TMP)>磺胺甲恶唑(SMX)>双氯芬酸(DF)>布洛芬(IBP);SOUR对毒性的灵敏度最高,是表征PPCPs抑制污泥活性的最佳指标。
This paper carried out the destructive experiment of activated sludge system by manually adding 4 typical pharmaceutical and personal care products(PPCPs),evaluated the toxicity effects of the types and concentrations of PPCPs on sludge activity during biological denitrification,compared the changes of the organic compounds degradation,nitrification and denitrification capabilities of activated sludge systems under the stress of PPCPs,and analyzed the profiles of activity of electron transport system(TTC-ETS),specific oxygen uptake rate(SOUR),ammonia uptake rate(AUR)and the ratio of viable bacteria to dead bacteria(Ratio_(G/R)),so as to characterize the sensitivity of PPCPs to produce toxicity in activated sludge system and evaluate its feasibility as an evaluation index of toxicity effect.The toxicity sequence of PPCPs determined by different methods was basically the same,and the inhibitory effect of PPCPs on activated sludge system in descending order was trimethoprene(TMP),sulfamethoxazole(SMX),diclofenac(DF)and ibuprofen(IBP).SOUR had the highest sensitivity to toxicity and was the best index to characterize the inhibitory effect of PPCPs on the activity of sludge.
作者
王竞茵
蔡海振
荣宏伟
何鹏鸿
罗宇新
WANG Jing‑yin;CAI Hai‑zhen;RONG Hong‑wei;HE Peng‑hong;LUO Yu‑xin(School of Civil Engineering,Guangzhou University,Guangzhou 510006,China)
出处
《中国给水排水》
CAS
CSCD
北大核心
2023年第23期104-110,共7页
China Water & Wastewater
基金
国家自然科学基金资助项目(52170071)
广东省自然科学基金资助项目(2022A1515011909)
广东省教育厅创新强校青年创新人才类项目(2019KQNCX109)。
