摘要
通过厌氧消化瓶小试实验和厌氧中试装置实验相结合的研究方法,驯化培养耐盐厌氧菌实现制药高盐废水的有机物质降解能力提升和氯离子浓度有效降低。首先,通过厌氧小试针对COD≈2500 mg/L,ρ(Cl^(-))≈10000 mg/L的高盐制药废水选取五种外源投加物展开实验,每种投加物设置六个不同投加量平行试验组,实验结果表明,外源投加相容性溶质,可增强厌氧耐盐菌在高盐环境下的活性,投加2 mmol/L甜菜碱对厌氧耐盐菌活性提升效果最佳,COD去除率较空白组提升约8%,达到60.83%,氯离子去除率为8.63%,实现了对厌氧处理高盐废水的有效强化。其次,利用多点回流式两相厌氧深度反应器处理ρ(Cl^(-))≈10000 mg/L的实际制药废水,在20 t/d的中试处理规模下,有效运行75天,厌氧处理效果良好,在稳定运行状态下废水COD去除率达到60%左右,氯离子吸附截留去除率为10%。
Through a combination of anaerobic digestion bottle pilot experiment and anaerobic pilot plant experiment,salt-tolerant bacterial strains were domesticated and cultivated to enhance the degradation of organic matter and reduce the chloride ion concentration of pharmaceutical high-salt wastewater.The anaerobic pilot test was conducted for five exogenous additives with COD≈2500 mg/L and ρ(Cl^(-))≈10000 mg/L.Six parallel test groups were set up with different dosages of each additive.The best enhancement effect appeared in the experimental group with 2 mmol/L betaine injection,and the COD removal rate increased by about 8% to 60.83% compared with the uninjected group and the chloride ion removal rate reached 8.63%,which realized effective enhancement of anaerobic treatment of high-salt wastewater.Further,the anaerobic treatment of the actual pharmaceutical wastewater with ρ(Cl^(-))≈10000 mg/L was effectively operated for 75 days at a pilot scale of 20 t/d using a multi-point reflux two-phase anaerobic deep reactor,and the COD removal rate of the wastewater reached about 65% and the chloride ion adsorption removal rate was 10% under stable operation.
作者
张志飞
白玉玮
万金泉
薛飞
闫志成
朱斌
ZHANG Zhifei;BAI Yuwei;WAN Jinquan;XUE Fei;YAN Zhicheng;ZHU Bin(School of Environment and Energy,South China University of Technology,Guangzhou 510006,China;Shijiazhuang High Tech Industrial Development Zone Water Supply and Drainage Company,Shijiazhuang 050000,China;Guangdong Shunkong Zihua Technology Co.,Ltd.,Foshan,Guangdong 528300,China)
出处
《水处理技术》
CAS
CSCD
北大核心
2024年第6期91-96,共6页
Technology of Water Treatment
基金
2021年广东省特支计划项目(2021JC060580)
2021年佛山市创新团队项目(2130218003140)。
关键词
制药废水
高盐废水
厌氧生物处理
相容性溶质
pharmaceutical wastewater
high salinity wastewater
anaerobic biological treatment
compatible solutes
