膜分离技术用于非电解质除杂

介绍电渗析装置工艺及基本原理，提出使用离子选择性透过膜的依据及极限电流的确定方法．论述了不同方法对冷冻液与ＮａＳＣＮ分离效果影响，指出采用电渗析法分离冷冻液中的ＮａＳＣＮ，使除杂率可达９５％以上。本工艺为腈纶冷冻液除杂及防治污染提供了新途径。     

固相微萃取-毛细管气相色谱法测定水中有机污染物

固相微萃取是一种快速、简便、集萃取浓缩于一体的样品前处理技术,具有分析快速、灵敏度高、无需有机溶剂的优点。用固相微萃取-毛细管气相色谱分析水中甲醇、丙酮、异丙醇、乙醇、乙腈、丙烯腈,检出限可达0.003～0.03mg/L。     

膜生物反应器与传统活性污泥工艺除污特性比较

比较了膜生物反应器（MBR）和传统活性污泥工艺（CAS）在相同运行条件下对生活污水的除污特性.结果表明,MBR系统对COD、NH3-N和TN的平均去除率比CAS分别高14.4%、51.2%和37.3%.但MBR中膜的截留使系统相对比较封闭,制约了通过排放高磷污泥的生物法除磷,除磷效率仅为32.9%,低于CAS工艺（43.0%）;将MBR与化学除磷工艺相结合,MBR系统除磷效率可达93.3%.     

依兰县绿色食品发展现状与对策初探

针对依兰县绿色食品种植面积,种植基地建设,养殖基地建设,山产品采集基地建设,加工基地建设和销售基地建设及经济效益情况,提出了目前依兰县绿色食品开发已初步形成的标准体系框架并进行论述,评价分析了依兰县绿色食品产业的有利条件和制约困素,并提出发展的对策,使之逐步走向依兰县农业经济的主导地位.     

炼油厂废碱液治理技术的研究

针对炼油厂废碱液存在的问题，研究一种新处理技术—溶剂萃取、破乳和臭氧氧化。为了解不同水质、ｐＨ值、温度的影响而进行试验研究，并获得了最佳操作参数。试验结果表明该技术在脱酚、除油、脱色脱臭方面是一种有效方法。     

半干法喷射烟气脱硫试验研究

介绍了半干法喷射烟气脱硫试验 ,研究了钙硫比、雾化水量、进口SO2 浓度、湿度等主要因素对脱硫率的影响规律 ,对布袋除尘器的辅助脱硫也进行了研究。结果将有助于改进半干法脱硫技术 ,并为进一步的工业应用提供了参考数据。     

The influence of source and timing of nitrogen fertilizers on yield and nitrogen use efficiency of four sweet potato cultivars

Nitrogen (N) availability is a very important determinant of crop yield. It is also one of the most expensive inputs in crop production. Thus, the efficient management of N by farmers with limited resource is a very important part of successful soil and crop management system. A field study was conducted on a Norfolk sandy loam soil at the George Washington Carver Agricultural Experiment Station, Tuskegee, AL, to evaluate the influence of fertilizer source and timing on the yield of four sweet potato [Ipomoea batatas (L.)] cultivars. Two N sources (urea, CO(NH₂)₂ and ammonium nitrate, NH₄NO₃), four sweet potato cultivars (‘Georgia Jet’, GA-Jet; ‘TU-82-155’, TU-155; ‘TU-1892’; and ‘Rojo Blanco’, Rojo-Bl) and three times (zero, single, and split applications) were used in a factorial designed experiment. Plants were harvested after 80 and 120 days and total and marketable yields determined. Nitrogen recovery efficiency, yield efficiency and physiological efficiency were also determined. Total and marketable yields of early maturing cultivars were significantly higher than of late maturing cultivars (P<0.05). The single application of N resulted in significantly higher yield in storage roots than split application (P<0.05). Physiological efficiency values were highly correlated with total marketable yields. Recovery rates increased with time. Late maturing cultivars tended to have higher N recovery and physiological efficiency than early maturing cultivars. These results suggest that cultivar maturity group should play an important part in N fertilization recommendations for sweet potato.     

锌镉还原法的海水硝酸盐浓度

按照《海洋调查规范》(1991)中锌镉还原法 ,用三对基体来配制NO3 -标准溶液 :NaCl水 (31gNaCl加纯水至 1L)与无氮东海海水ECS、《海洋调查规范》(1991)人工海水SAS(NaCl水加MgSO4)与ECS和Strick land Parsons(1972 )人工海水SP72 (SAS加NaHCO3 )与ECS。经测定 ,且忽略标准曲线方程的截距 ,纯水与ECS的NO3 -还原率比为 0 .2 6 6 ,NaCl水与ECS的比为 0 .70 6 ,SAS与ECS的比为 0 .90 1,而SP72与ECS的比则为1.0 0 9。显然 ,用ECS和等价的SP72定出的值最接近天然海水中NO3 -的浓度。由《海洋调查规范》(1991)SAS定出的浓度须乘上 0 .90 1～ 0 .95 6后才接近海水中NO3 -浓度。     

溶剂萃取--蒸汽蒸馏法处理含油污泥

为了实现含油污泥的资源化和无害化，对含油污泥进行了室温下的三氯甲烷溶剂萃取，然后在温度３２０～４８０℃、压力０．２ＭＰａ下进行水蒸汽蒸馏０～９０ｍｉｎ的掊油实验，结果表明含油污泥中加入３倍的萃取溶剂进行萃取，再按１ｇ油泥加０．５ｍＬ的水在４００℃下蒸馏，４５ｍｉｎ效果较好，脱油率达８０％～９５％。     

异养-电极-生物膜联合反应器脱除地下水中硝酸盐的研究

提出了异养 电极 生物膜联合反应器脱除地下水中硝酸盐的工艺 ,该反应器以异养反硝化为主 ,通过电化学段脱除异养段后水中残留的甲醇或硝酸盐、亚硝酸盐氮 .进水中碳氮比 (质量比 )从 2 2— 2 9,都可保证出水中既无亚硝酸盐积累现象 ,也无残留的甲醇 ,但甲醇略为过量时可提高反应器的处理能力 .2 4℃时处理硝酸盐氮浓度 40mg L的进水 ,反应器最大脱硝负荷为 47g (m3 ·h) .