【摘 要】
：
从某污水厂活性污泥中分离、筛选获得了一组高效的自养氨氧化混合菌群.通过批式培养,结果表明,其最适温度和pH分别为30 ℃和7.0～7.5;溶解氧浓度对氨氧化影响较小;0～1.0 %的盐度
【机 构】
：
四川大学生命科学学院,中国科学院成都生物研究所
【基金项目】
：
国家高技术研究发展计划(863计划)专项项目;
论文部分内容阅读
从某污水厂活性污泥中分离、筛选获得了一组高效的自养氨氧化混合菌群.通过批式培养,结果表明,其最适温度和pH分别为30 ℃和7.0～7.5;溶解氧浓度对氨氧化影响较小;0～1.0 %的盐度对氨氧化速率无影响,盐度超过1.0 %时,氨氧化速率迅速下降;磷含量在20～900 mg/L时对氨氧化无影响;氨氮浓度在0～1000 mg/L时菌群生长正常,氨氧化速率最高可达150 mg·L-1·d,氧化终产物主要为亚硝酸盐,残留氨浓度低至0～3 mg/L.通过PCR-DGGE检出5株氨氧化菌,初步确定均为亚硝化单胞菌属(Nitrosomonas sp.),并发现菌群中还存在其它与氮转化有关的菌种.
其他文献
There were 6 target DNA fragments of the three parental strains existing in the cell of GEMs(genetically engineered microorganism strain) Fhhh measured in this
The bleaching of indigo-carmine catalyzed by laccase was monitored on-line by UV/Vis spectroscopy.The resulted data were analyzed by evolving factor analysis (E
An innovative photoelectrode, TiO2/Ti mesh electrode, was prepared by galvanostaticanodisation. The morphology and the crystalline texture of the TiO2 film on m
Nitrification acts as a key process in determining fertilizer use efficiency by crops as well as nitrogen losses from soils. Metal dithiocarbamates in addition
In the paper the simplified three-dimensional turbulent diffusion equation of the suspended load is deduced by the power series method. The formula on the trans
The united membrane biological reactor(UMBR) was studied for the treatment of some simulate and municipal wastewater . The removal efficiency for COD and turbid
Two different kinds of black liquor from the papermaking industry were treated by acidification and reuse. The experimental parameters and conditions were discu
First a report about present status of circulating fluidized bed reactors for coal and multi-fuel combustion in power plants is given. Thereafter the developmen
By means of both a theory for pressure-induced shifts (PS) of energy spectra and a theory for shifts of R2 line, and U band of GSGG:Cr3+ at 300 K have been calc
Two charge-transfer complexes of 2a and 2b of Keggin type were synthesized and characterized by elemental analysis, IR spectra, UV spectra, XRD, TG-DSC; and wer