CAJ | 학술논문

　　同步研究了3种碳源，5种不同接种量，5种蛋白胨浓度，5中起始pH条件下对光合细菌生长的菌体浓度影响，以及光合细菌净化有机污水9 d内的COD变化和pH变化情况。3种碳源培养光合细菌时柠檬酸OD值最大，可达0.36，葡萄糖次之，乙酸最差；从菌体密度增加的速度来看5种接种量以10%最适宜；5种蛋白胨浓度中，蛋白胨浓度达到2 g/L时，光合细菌OD值最大接近0.900；5种起始pH中，起始pH为7.0时，菌体密度达到最大OD值0.850，并保持一段时间的稳定；有机污水前4天COD降低很快，第4天到第7天有所减缓，接上活性污泥后降解加快；整个污水处理过程中pH呈现先降低再上升再降低的趋势。
　　동보연구료3충탄원，5충불동접충량，5충단백동농도，5중기시pH조건하대광합세균생장적균체농도영향，이급광합세균정화유궤오수9 d내적COD변화화pH변화정황。3충탄원배양광합세균시저몽산OD치최대，가체0.36，포도당차지，을산최차；종균체밀도증가적속도래간5충접충량이10%최괄의；5충단백동농도중，단백동농도체도2 g/L시，광합세균OD치최대접근0.900；5충기시pH중，기시pH위7.0시，균체밀도체도최대OD치0.850，병보지일단시간적은정；유궤오수전4천COD강저흔쾌，제4천도제7천유소감완，접상활성오니후강해가쾌；정개오수처리과정중pH정현선강저재상승재강저적추세。
BInfluence including three carbon source,five different inoculum,five concentration of peptone and five original pH on the concentration of photosynthetic bacteria were studied. The change of COD (Chemical Oxygen Demand) and pH during purification of organic sewage using photosynthetic bacteria were also researched. When photosynthetic bacteria were cultured,citric acid made the OD (optical density) be the most of three carbon source,which was 0.36, glucose took the second place,acetic acid was worst. From the increasing speed of OD,10%inoculum was the optimum.Of the five concentration of peptone, 2 g/L made the value of OD be the most, being close to 0.900. When the original pH is 7.0,OD was the most being 0.85, and retained stable for a short time.During the purification of organic sewage , the COD of the first 4 days reduced rapidly, yet slowed down from fourth day to seventh day, speeded up after the inoculum of activated sludge. The pH first decreased then increased during the whole purification of organic sewage. Fig 2, Tab 2, Ref 22.