摘要
进行了利用海藻酸钙包埋法固定化真菌Magnusiomyces ingens LH-F1强化活性污泥好氧脱色酸性红B(ARB)废水的研究。结果显示,在真菌LH-F1包埋密度为40 g/L的条件下,经其强化的活性污泥对ARB的脱色效率明显优于纯污泥,且强化菌投加量越大,脱色效果和稳定性也越好;在进水ARB浓度为分别50和100 mg/L时,24 h脱色率分别稳定在97%和93%以上。微生物群落分析的结果显示,经生物强化后的污泥体系微生物群落发生了显著变化,在菌群中检测到一株可利用偶氮化合物作为碳源的细菌Hydrogenophaga palleronii DSM 63及其它一些可以降解多环芳烃和常见小分子有机化合物的细菌及真菌菌种,ARB的降解脱色是这些优势菌协同完成的。
Aerobic decolorization of acid red B （ARB） wastewater by the activated sludge systems which were augmented by calcium alginate entrapment immobilized strain LH-F1 was investigated. Results showed that the decolorization efficiencies of bio-augmented systems, which increased with the amount of immobilized strain LH-F1, were obviously higher than non-augmented ones. Decolorization efficiencies were stabilized at more than 97% and 93% within 24 h when the influence concentrations of ARB were 50 mg/L and 100 mg/L respectively. Results of microbial community analysis demonstrated that the microbial structure obviously shifted compared with the original sludge. A bacterium Hydrogenophaga palleronii DSM 63 which could use an azo compound as carbon source was detected from the bio-augmented systems, as well as some other bacteria and fungi that could degrade PAHs and other common organics. It was speculated that ARB was degraded through the synergistic effects of these dominant microorganisms.
出处
《环境科学与技术》
CAS
CSCD
北大核心
2015年第9期42-46,140,共6页
Environmental Science & Technology
基金
国家自然科学基金(51108223)
辽宁省教育厅科学研究项目(L2013415)
关键词
固定化
真菌
生物强化
偶氮染料
immobilization
fungi
bioaugmentation
azo dye
