铝厂用轻型渣浆泵设计实践

根据铝厂用轻型渣浆泵的设计实践，总结了轻型渣浆泵的设计特点及要点。     

Characterization of a diesel sludge microbial consortia for bioremediation

The organisms found growing in a mixed diesel sludge-chromium metal waste were characterized directly using environmental scanning electron microscopy (ESEM) and traditional fixation techniques with scanning electron microscopy (SEM). An attempt to identify organisms genetically directly from the sludge failed because of interference from chemicals in the waste with polymerase chain reaction (PCR). The organisms were isolated using plate culture techniques and isolates were characterized by SEM and genetic sequencing. A variety of organisms were found with differing morphologies and growth habits. Sequencing identified an organism homologous to Bacillus mycoides and matched other organisms such as Paenibacillus lautus, Paenibacillus spp., Bacillus spp., and Rhodobacter spp.     

污泥混合搅拌机械动力需求仿真与估算

在污水处理厂脱水污泥处理成套设备中,污泥混合搅拌机械起着重要作用,但目前对脱水污泥搅拌的动力需求相关研究几乎没有.研制了1台卧式污泥强制搅拌机,对叶片搅拌过程进行受力分析,计算出理论搅拌扭矩计算方程,通过MATLAB仿真计算出了理论所需扭矩,同时基于该搅拌机实际测算了搅拌扭矩,发现实测扭矩与仿真结果吻合得很好,继而推广到大型的涉及脱水污泥搅拌的机械,通过仿真估算出所需搅拌动力,为驱动电机的选型提供依据.