光合细菌和活性污泥联用净化有机污水的研究  

Studies on the Purification of Organic Sewage Using Photosynthetic Bacteria and Activated Sludge

作　　者：杜苏萌[1] 王人悦[2] 赵金安[1] 

机构地区：[1]太原工业学院环境与安全工程系,山西太原030008 [2]天津市食品研究所有限公司,天津301609

出　　处：《食品研究与开发》2013年第15期82-85,共4页Food Research and Development

基　　金：太原工业学院青年基金(2012LQ07)

摘　　要：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。Blnfluence 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.

关 键 词：光合细菌 OD值 COD值 活性污泥 有机污水 

分 类 号：X703[环境科学与工程—环境工程]