亚铵制浆黑液非无菌操作连续发酵生产酵母

从土壤中筛选出能在亚铵黑液中生长的毕赤酵母菌株（Ｐｉｃｈｉａ ｓｐ．Ｎｏ．１）经耐毒驯化后，可接种于酸析脱木素和汽提脱毒后的亚铵黑液中，在非无菌操作条件下连续发酵生产酵母菌体，该菌生产迅速，连续培养衡释率达０．２６ｈ＾－１，总糖的酵母得率为０．４８ｇ／ｇ（ＴＳ），ＣＯＤ去除２３％，菌体易絮凝，可自然沉降分离。     

我国东部冲积平原区水成土壤元素背景值地域分异规律

从气候条件、母质物质组成的差异以及河流上下游物质之间的联系等角度，讨论了我国东部冲积平原区土壤中１３种元素的地理分布趋势及影响因素。研究表明，大多数元素具有明显的南北向地域分布趋势，这种趋势是地带性和非地带性因素共同决定的，而以非地带因素更重要。此外，东部平原土壤与相应主要河流上游侵蚀区土壤微量元素含量具有很好的共轭关系。     

用水基表面活性剂乳液回收废白土中蜡的界面张力研究

通过测定液体与废白土粉末之间的接触角及液体与蜡之间的液液界面张力，对水基表面活性剂乳液的溶剂及配方进行了优选，得到最佳的水基面活性剂乳液的组成为：质量分数０．２％的十二烷基苯磺酸钠＋体积分数为２．５％的乙醇＋体积分数为２５％的混合烃（正己烷＋苯，等体积）＋体积分数为７２．５％的水。实验证明，用该水基表面活性剂乳液处理废白土，蜡的回收率可达８０％，同时不破坏白土的颗粒结构。     

Study on nitrile-degrading microorganisms

Two strains of bacteria were isolated from nitrile polluted soils, and identified as Corynebacterium boffmanii and Arthrobacter flavescens. Acetonitrile, propionitrile, butyronitrile and acrylonitrile were degraded by these bacteria to yield corresponding amides, carboxylic acids and ammonia. The nitrile-degrading abilities of these strains were investigated. The removal rates for the nitrile were nearly 100%, after these bacteria were grown in medium containing 10000 ppm of aceto-, propio-, or butyronitrile at 28 ℃ for 24h. When the reaction mkture consisting of 5000 ppm of above mentioned nitriles or acrylonitrile and 20g (dry cell) /L resting cells of the two strains in 0.06mol/L phosphate buffer (pH7.5) was incubated separately at 25 ℃ with moderate shaking for 15 or 45 min, the nitrile could be degraded completely. The optimum growth conditions for C.hoffmanii and A.flavescens were studied as well.     

Sensitivity experiments and assessment of climatic changes in China induced by greenhouse effect

Climatic changes can be separated into two parts: natural changes -and human activity influenced on climatic changes. The observed data could not only show the effects caused by human activity. Several simulated results as simulated by the GCMs induced by the greenhouse effects in China .have been analysed. It is shown that an obvious warming of about 3-6℃ in winter and 2-5℃ in summer in China as simulated by the GCMs induced by doubling CO2 have been found. There are getting drier or wetter regions in China due to doubled CO2 as simulated by most of models. Comparing the simulated results with the observed data in China, some simulated results are able to be believed. The GCMs should be improved, especially in the regional areas.     

天然矿石毒重石吸附硫酸盐废水的试验研究

利用天然矿石毒重石对硫酸盐废水进行吸附处理，在废水的pH=9，停留时间为80min左右时，该吸附剂具有较好的吸附效果。且该离子交换吸附法具有成本低、操作简单、无二次污染的优点。     

Dobbins-Camp水质模型的修正

对多宾斯 坎普 (Dobbins Camp)水质模型进行了修正 ;并分别运用传统多宾斯 坎普模型和修正模型 ,对某河段实测资料进行BOD、D(氧亏 )计算 ,比较两者之间的异同 ,及分析溶解氧对有机物降解的影响     

序批式反应器的水力停留时间的理论探讨

根据液龄分布函数是二元函数的观点．推导出了当进、出水流量是时间的函数时，反应器的水力停留时间的通用积分式和离散式；然后得出了序批式反应器(SBR）的水力停留时间(HRT)具体表达式，并分析了用现有方法计算其水力停留时间所产生的误差．结果表明，最大相对误差rmax仅与充水比λ有关．且呈正相关关系．取典型值λ=0．4时，rmax高达25％。     

铜离子冲击下活性污泥微生物多样性的分子生态学分析

采用基于 16SrDNA序列分析方法 ,在长度多态 (LPM)和 16SrDNA的GC含量二维水平分析了受重金属污染的活性污泥系统内细菌的优势种类和多样性 .设计的PCR引物可以将细菌分为三大类 :即 1)proteobacterialα&δ(变形杆菌α&δ) ,2 )pro teobacterialβ&γ(变形杆菌 β&γ) ,以及 3)flexibacter(屈桡杆菌 )和革兰氏阳性菌 .分析了未受重金属驯化和受重金属驯化的两类活性污泥系统在重金属作用下优势种和多样性的变化 ,结果显示未驯化的活性污泥系统多样性减少但优势种的变化微小 ,而驯化系统优势种有较大的变化 ,但多样性基本不变 .这一结果证实驯化有助于提高微生物对重金属的抗性