Treatment and reuse of beer wastewater using the system of phytosysthetic bacteria and spirulina maxima

应用PSb将啤酒废水中的有机质降解处理为无机质，用甲壳质絮凝沉降除去PSb后加入螺旋藻进行培养.小型动态模拟实验结果表明PSb和螺旋藻不仅能高效地净化啤酒废水，对COd和nH＋4n的去除率达100%，而且能回收数量可观（781Mg（干重）/（l·d）），营养价值高（蛋白质含量为493g/100g（干重））的螺旋藻，还研究了PH、溶解氧、光照、光合细菌密度等因子对PSb去除废水有机质的影响.A study on the install of phytosysthetic bacteria (PSB) and Spirulina maxima (SM) for beer wastewater treatment and reuse was carried out.The beer wastewater was treated with PSB to decompose organic matter.Chitin was then added for PSB precipitating.Finally,SM was added to remove organic matter and reuse nitrogen and phosphorus.The effects of pH,DO,illumination,the density of PSB and SM etc.on the removal of COD by PSB and on the growth of SM were discussed.The results of a dynamic model experiment showed that the system of PSB SM not only have a high removal efficiency for COD and NH + 4 N (100%),but can also yield a large amount of SM (78.1mg (dry weight)/(L·d)) and protein in SM (49.3mg/100g (dry weight))

Treatment and Reuse of the Wastewater of Bean Products with the Phytosynthetic Bacteria and Spirulina maxima

应用光合细菌将黄泔水中的有机物降解转化为无机氮磷后养殖螺旋藻.结果表明，在实验条件下光合细菌对黄泔水COdCr的去除率可达70%，处理后的黄泔水用甲壳质絮凝澄清后加入螺旋藻并曝气进行培养，藻生长周期为22d、生长速率为20~30Mg/l·d.藻体蛋白质含量平均为52.6g/100g（干重），游离氨基酸平均含量为2.41g/100g（干重）A try on the treatment and reuse of the waste water of bean products with the phytosynthetic bacteria(PSB) and S.maxima(SM)was introduced.First the waste water of bean products was treated with PSB to decompositing organic matter,and then chitin was added for precipitating PSB,the last SM was added into the treated waste water for removing organic matter further and reusing nitrogen and phosphorous.The results of an dynamic modled experiment showed that PSB have a high removal efficiency for COD(70%) on the waste water of bean products,and SM cultured in the treated waste waster grow well,the rate of growing is 2030mg dryweight/(Ld),and the content of protein and free amino acid in SM are 52.6g/100g dryweight and 2.41g/100g dryweight respectively

地方税的国际借鉴与我国相应税制建设

地方税是分税制财政体制的重要组成部分。我国1994年税制改革后,地方税制形成了初步的框架,但是在执行中还存在不少问题。本文论述在新一轮的税制改革中,如何借鉴国外地方税的经验,结合我国的具体实际情况,进一步完善我国的地方税