超重力反应器处理罐顶臭气技术工业应用研究

阐述超重力反应器工艺原理及处理罐顶臭气工业化实验效果。     

焦炭负载型纳米TiO2光催化剂的制备优化试验及其降解效果分析

以焦炭为载体,Na2SiO3为粘结剂制备了负载型纳米TiO2光催化剂,通过单因素试验和正交试验优化出制备该光催化剂的最佳条件,研究分析了该催化剂在紫外灯辐照下降解亚甲基蓝染料废水的效果及影响因素。试验结果表明,煅烧3h,粘结剂浓度为20％wt,煅烧温度为400℃时制备的负载型纳米TiO2光催化剂的降解效果最好,达到80．88％。     

地表沉陷治理的新方法

最近,兖州矿业(集团)公司济宁二号煤矿在四采区应用覆岩离层注浆技术,减沉效果相当明显,取得了良好的效果.     

燃煤锅炉烟气氨法脱硫技术的应用

电厂燃煤锅炉烟气脱硫是减少和控制酸雨的有效手段。LS氨法喷雾脱硫技术具有脱硫效率高、环境效益好、资源综合利用的特点。以合成氨生产装置回收的低浓度氨水为吸收剂,实施锅炉烟气脱硫技术改造．取得良好的应用效果。     

Impact of dynamic distribution of floc particles on flocculation e ect

Polyaluminum chloride (PAC) was used as coagulant and suspended particles in kaolin water. Online instruments including turbidimeter and particle counter were used to monitor the flocculation process. An evaluation model for demonstrating the impact on the flocculation effect was established based on the multiple linear regression analysis method. The parameter of the index weight of channels quantitatively described how the variation of floc particle population in different size ranges cause the decrement of turbidity. The study showed that the floc particles in different size ranges contributed differently to the decrease of turbidity and that the index weight of channel could excellently indicate the impact degree of floc particles dynamic distribution on flocculation effect. Therefore, the parameter may significantly benefit the development of coagulation and sedimentation techniques as well as the optimal coagulant selection.     

蚯蚓生态滤池对生活污水中氮的去除作用

研究了单级蚯蚓生态滤池对生活污水中不同形态氮的去除效果,并对其机制进行了探讨.结果表明,处理前进水总氮以氨氮为主,占83.88%,出水总氮以硝态氮为主,占76.46%,氮素的形态在处理前后发生了很大的改变;系统对总氮和氨氮的平均去除率分别为28.08%和90.44%,硝态氮大量积累,亚硝态氮少量积累;系统硝化作用强,反硝化作用受到抑制,总体脱氮能力较差,可采取提高湿干比、改进滤池构造、多级滤池串联、后接人工湿地和提高进水碳氮比等手段强化反硝化,以提高滤池总氮的去除效果.     

Evaluation of non-point source pollution reduction by applying Best Management Practices using a SWAT model and QuickBird high resolution satellite imagery

This study evaluated the reduction e ect of non-point source pollution by applying best management practices (BMPs) to a 1.21 km2 small agricultural watershed using a SWAT (Soil andWater Assessment Tool) model. Two meter QuickBird land use data were prepared for the watershed. The SWAT was calibrated and validated using daily streamflow and monthly water quality (total phosphorus (TP), total nitrogen (TN), and suspended solids (SS)) records from 1999 to 2000 and from 2001 to 2002. The average Nash and Sutcli e model e ciency was 0.63 for the streamflow and the coe cients of determination were 0.88, 0.72, and 0.68 for SS, TN, and TP, respectively. Four BMP scenarios viz. the application of vegetation filter strip and riparian bu er system, the regulation of Universal Soil Loss Equation P factor, and the fertilizing control amount for crops were applied and analyzed.     

区域污染防治最佳技术体系的构建及实施途径探讨——以深圳为例

基于各地自然条件、环境问题及需求、经济发展水平、技术力量等不同,有条件的地区应建设设立符合区域特点和发展需求的区域污染防治最佳技术体系,才能确保有限的环保投资发挥最大的环境效益.本文则以深圳市为例,以探讨区域污染防治最佳技术的构建和实施,认为其构建应充分考虑区域的环境问题,并建立有效的筛选和完善程序,同时,应在环境政策手段予以创新,确保其有效实施.     

贵阳花果园社区:“智慧消防”练就防火“金钟罩”

"请查看火警信息!""请查看火警信息!"贵阳花果园社区第二十微型消防站,急促的警铃声突然响起,系统显示一期二栋一单元中的一个烟感报警器附近出现"烟雾",电脑屏幕上随即出现"事故"地点,并自动标记出最佳路线……这是花果园社区专职消防大队大队长马安东为记者展示社区"智慧消防"系统时的一幕。     

VFSMOD模型对植被过滤带净化效果的模拟与适应性分析

在简述Vegetative Filter Strips Model(VFSMOD)模型的功能和机制的基础上,通过野外小区试验资料检验该模型对国内植被过滤带净化效果的模拟情况,进而分析其适用性.结果表明,出流水量模拟值与实测值的偏差多在±15%以内,出流SS浓度模拟值与实测值的偏差多在±20%以内,出流水量和出流SS浓度模拟值与实测值的判定系数R2分别为0.995和0.889,模型具有较高的精度与较强的适应性,可用于植被过滤带的规划设计.