苯系物测定方法的研究

在浓硫酸存在下，苯类化合物与甲醛反应可生成黄棕色二苯基甲烷聚合体，其浓度与显色程度成正比关系，以此进行比色测定。该有色化合物的最大吸收波长为465nm，本法的最低检出限为1．240μg／5ml，当采样体积为30L时，最低检出浓度为0．04mg／m^3。本法适用于室内环境空气的测定。研究此新测定方法的同时，与国家标准方法—气相色谱法进行了对比，对比结果显示，这两种方法相关性很好。本法具有连续性测定，方法快速、经济、简便、灵敏度高等优点。     

德阳市城市生活垃圾处理技术的研究与实践

本文以德阳市城市生活垃圾的研究及垃圾处理工程的建设为主线，论述了德阳市在生活垃圾处理实践中不断探索和改造的实情；以满足城市发展需要的垃圾处理方式及转运工作为主线，介绍了生活垃圾处理场不断进行科研和实践的工作。     

SCALE PROBLEMS IN INTERDISCIPLINARY WATER RESOURCES INVESTIGATION1

ABSTRACT The problems encountered in estimating scale parameters in interdisciplinary watershed research are discussed. Meteorology, hydrology, geology and water quality are discussed with respect to their individual strengths and weaknesses when applied to different scale problems. Areas where incompatibilities exist are pointed out and suggestions are made for effecting compromise. A watershed scale of roughly a hundred acres may be the scale at which all disciplines can effect optimum interaction.     

THE EFFECT OF PRICE ON LONG RUN WATER SUPPLY BENEFITS AND COSTS1

ABSTRACT The long-term effects of presently used and alternatively proposed water pricing policies were studied using some tools of operations research and economics. A discrete deterministic dynamic programming model was structured and operated to determine the optimal water supply capacity expansion paths for a hypothetical residential community with a given water pricing policy. The objective of the model was the maximization of future discounted consumers'surpluses plus producer's revenues net of the long-run cost of supply. State variables were the size of system capacity in MGD and stage variables were the times of feasible capacity increase in years. Demand curves, population sizes, and growth rates for various economic sectors of the community were assumed known, as well as short-run production and capital construction costs. Several policies, including constant unit rates, decreasing or increasing block rates and summer differential rates were tested. It was concluded that price plays a major role in the short-run allocation and long-run planning and conservation of water supplies. Conservational pricing policies were advocated as means of lowering the long-run cost of water, using the water price-demand function as a planning tool. Further research in these areas was recommended.     

CHANGING TIMES FOR WATER RESEARCH AND TECHNOLOGY TRANSFER1

In recent years, important changes have occurred in water resources research. There have been major shifts in attitudes of Congress, state legislatures and the general public toward water and related resource issues. Future water research and development will have to be environmentally oriented. Emphasis is shifting to research productivity. To justify research expenditures, hard facts must be produced which demonstrate payoff. Technology transfer (getting research results into the hands of users in an understandable and usable form) is gaining prominence. Research projects must be designed for total problem solution and technology transfer must be incorporated as a part of project objectives. Research must be planned and conducted to meet users' needs. Guidelines for modern research design and technology transfer are presented.     

一体化活化硅藻土反应器应用于污水深度处理的中试研究

开发了一种新型的污水深度处理反应器--一体化活化硅藻土反应器,并对其性能和净水效果进行了研究.结果表明:与常用的混凝剂PAC、硫酸铝相比,活化硅藻土对污水厂尾水中的SS、NH3-N、COD、BOD5、TP、TN、UV254等污染物指标的去除效果更好且其处理成本也较低;当原水流量和水质变化时,一体化活化硅藻土反应器具有一...     

洱海流域土地利用格局研究

基于GIS和Erdas平台,利用2007年TM影像,对洱海流域不同高程、不同方位的用地方式、布局状态及其景观格局进行了研究。研究表明,洱海流域以有林地、灌木林地、草地、农田、水域用地5类用地方式为主,但用地布局和格局不甚合理;从不同方位布局看,东部和南部片区的景观破碎度相对较高,景观连通性相对较低。建议将高干扰用地景观部分向洱海东部片区转移,并优化和重组洱海流域景观结构。     

活性炭负载Ni—Cu—Mn催化臭氧预处理化工废水的研究

本研究采用臭氧-生物活性炭工艺深度处理某石化化工污水处理厂废水,考察了此工艺对化工污水的处理效果及影响因素分析,以求得臭氧处理的最优性价比。     

排污权交易中企业初始排污权的核定方法研究

排污权的初始分配是开展排污权交易的基础,科学地制定污染物初始排污权的核定办法是涉及到企业.之间公平发展的重要问题.本文根据企业的实际情况,将企业分成多种类型,依据不同的类型分别制定初始排污权的棱定方法,为排污权交易实施中企业初始排污权核定提供了参考.     

污泥焚烧技术的研究进展

与堆肥、填埋等污泥处理方法相比,污泥焚烧具有减容、减量和无害化等优点,是一种较好的污泥处理方法。对目前国内外污泥焚烧发展状况进行了分析,并根据污泥焚烧分类,介绍了污泥焚烧技术的研究及进展,最后提出污泥焚烧是我国污泥处理的新趋势的观点。