盐度对DMBR处理养殖废水脱氮效能的影响

采用动态膜生物反应器(DMBR)处理养殖废水,考察盐度为0～3 000mg·L-1时动态膜生物反应器的脱氮效能.结果表明:DMBR对养殖废水的CODMn和NH3-N的去除效果保持稳定,分别为93%,87%左右;在盐度提高到1 000mg·L-1后,DMBR内反硝化速率明显提高,对NO3-N的去除率提高到97%,总氮去除率也达到94%.在盐度为0～3 000mg·L-1下,DMBR处理养殖废水的出水水质达到SC/T 9101-2007《淡水池塘养殖水排放要求》中的一级排放标准.     

Color Image Quality Assessment Based on Structural Similarity

It is well-known that classical quality measures,such as Mean Squared Error(MSE),Weighted Mean Squared Error(WMSE)or Peak Signal-to-Noise Ratio(PSNR),are not always corresponding with visual observations.Structural similarity based image quality assessment was proposed under the assumption that the Human Visual System(HVS)is highly adapted for extracting structural information from an image.While the demand on high color quality increases in the media industry,color loss will make the visual quality differe...     

猴头菌深层发酵工艺条件的研究

通过单因子试验和多因子正交试验，优化筛选了适于猴头茵摇瓶培养条件。结果表明，其适宜的摇瓶条件为：培养温度28℃，培养基起始pH值为5．0，摇瓶装量为60mL／250mL，接种量15％，摇瓶培养最适碳氮源及其浓度分别为：可溶性淀粉3．5％。酵母膏3．5％。