低DO浓度下短程硝化试验研究

进水氨氮浓度不变，低DO下启动并运行了短程硝化试验，考察了反应器内的氨氮氧化和亚硝酸盐积累情况。试验结果表明反应器内氨氮几乎全部被氧化，污泥浓度从4500mg／L下降到870mg／L，此时亚硝酸盐的积累率为55％，说明只控制DO的浓度很难实现高的积累率，同时受到温度和污泥龄等的较大影响。     

胰岛素废水处理工程设计

针对某医药公司在制取胰岛素过程中产生的高浓度废水，采用预处理（酒精回收-盐水投配-除油）-倒A2O-接触氧化-化学除磷组合工艺进行调试，其处理效果明显，出水各项指标均能达标，同时对工艺中存在的缺陷进行了分析。     

Spatial variations in daily average CO2 concentrations above wetland surface of Xianghai National Nature Reserve, China

Horizontal and vertical variations of daily average CO2 concentration above the wetland surface were studied in Xianghai National Nature Reserve of China in August, 2000. The primary purpose was to study spatial distribution characteristics of CO2 concentration on the four levels of height(0.1 m, 0.6 m, 1.2 m and 2 m) and compare the differences of CO2 concentration under different land covers. Results showed that daily average CO2 concentration above wetland surface in Xianghai National Natural Reserve was lower than that above other wetlands in northeast China as well as the worldwide average, suggesting that Xianghai wetland absorbed CO2 in August and acted as“sink” of CO2. The horizontal variations on the four levels of height along the latitude were distinct, and had the changing tendency of“decreasing after increasing” with the increase of height. The areas with obvious variations were consistent on different levels of height,and those with the highest variations appeared above surface of shore, sloping field, Typha wetland and Phragmites wetland; the vertical variations were greatly different, with the higher variations in Phragmites wetland and Typha wetland, and the lands near the shore and the sloping field with the lower variations. Spatial variations of daily average CO2 concentrations above wet!and surface were affected by surface qualities and land covers.     

广州荔湾湖整治前后生态环境变化调查

章根据广州荔湾湖清淤截污前后水质监测结果、水生物藻类和鱼类鉴定及荔湾湖周边植被调查进行综合分析，结果表明：荔湾湖水质有了一定的好转，生物多样性也有明显改善，但湖水水质仍处于富营养状态，部分污染物浓度仍较高。因而，荔湾湖的环保工作应进一步加强，使该湖区水质达到广州市水质标准。     

SiO_2-TiO_2纳米管的制备及其光催化性能的研究

文章采用水热法制备SiO2-TiO2纳米管,通过扫描电镜(SEM)和透射电镜(TEM)考察了该纳米管的结构形态,并用X-射线衍射考察其晶体结构。实验结果表明所制得的纳米管是锐钛晶型,其两端开口,具有多层管壁;管径为8nm左右,管壁厚1～2nm。光催化降解酸性橙Ⅱ实验表明:SiO2-TiO2纳米管光催化速率比TiO2纳米管高出10%。这可能是因为Si元素的存在增大了钛纳米管的比表面积,同时SiO2的存在能降低光生电子和空穴的复合率。     

电气石超细粉体对废水中Zn^2＋离子吸附的研究

根据国内外学者对电气石在环境保护方面的研究和应用，本研究中选用内蒙古赤峰地区天然电气石为原料，加工成电气石超细粉体，用于对Zn^2 离子的吸附试验，分析总结了电气石对重金属的吸附机理。以期能为电气石在环境保护领域的应用开辟新的途径。     

降低氡浓度 创造良好室内环境

放射性污染离人们的生活越来越近，本文从保护室内环境的角度介绍了放射性气体氡的来源、危害及其防治。     

造纸黑液厌氧发酵处理及木质素回收应用技术

治理主要对象为造纸厂草浆制浆蒸煮废液——黑液．其性质及污染物指标，随纸张种类、原料和蒸煮工艺的不同，有很大差别．pH值由12至9不等．黑液中含有大量木质G素及半纤维素等有机物质，还有蒸煮药剂及蒸煮过程中的化学产物，成分比较复杂．其COD浓度由22000mg／L至90000mg／L不等，     

SNOX烟气双脱新工艺

SNOX双脱新工艺是利用催化反应将NO_x、转化成氮气、将SO_2、转化成浓硫酸产品,并较充分地利用余热,是干式、节能型、较好地利用硫资源的方法,在欧、美引起相当的重视。本文按1992年4月发表的300MW全尺寸大型装置运行情况的报导编写。