一株光合细菌的分离及其硫化物的处理效果

Separation of Strand of Photosynthetic Bacteria and its Use in Removal of Sulfide from Waste Water

从宁海东坝养殖场底泥中分离获得一株光合细菌,通过纯化和初步鉴定,得知该菌株是一株隶属于外硫红螺菌属的紫色硫细菌(Ectothiorhodospira sp.).该菌株能以S、Na2S2O3和Na2S等多种含硫化合物作为无机电子供体.不同废水中硫化物处理效果的研究显示,该菌株处理高浓度硫化物的效果较为明显,其对畜禽废水和鱼粉废水中硫化物的去除率可分别达到68.55%和56.15%.

A strand of photosynthetic bacteria is separated from sediment of a shrimp pond.Judging by its characteristics,PSB-1 belongs to a genus of Ectothiorhodospirace found in purple sulfur bacteria.It can utilize S,Na2S2O3,Na2S.9H2O and sulfide as inorganic electron donor.It can be used to remove sulfide from a variety of wastewaters.Good results are noted with livestock wastewater and fishmeal wastewater： The rate of sulfide removal can reach 68.55% and 56.15%.However,when treating the organic wastewater with low concentration of sulfide,a poor effect（only 18.89%） is identified.