城市生活垃圾焚烧发电设施关键工艺的操作方法

运用深圳市市政环卫综合处理厂十几年来的运行经验和科研成果，探讨、分析了城市生活垃圾焚烧发电设施稳定运行的关键工艺，阐明系统稳定运行的重要工艺环节，并详细说明工艺的操作方法。     

Combustion hazard of mixing ammonia with nitric oxide

Premixed ammonia/nitric oxide flame was simulated using the Lindstedt 1994 and Miller–Bowman 1989 reaction mechanisms in CHEMKIN. The predicted laminar burning velocities compared well with limited measured values in the literature. The effects of unburnt mixture temperature and pressure on laminar burning velocity, flammability limits, adiabatic flame temperature and species profiles were studied. The unburnt mixture temperature had a positive impact on both the laminar burning velocity and the adiabatic flame temperature, and it extended the ammonia-rich flammability limit. The pressure had a marginally negative influence on the laminar burning velocity, while it had a slightly positive effect on the adiabatic flame temperature.     

FACTUAL INPUTS FOR ALLOCATION DECISIONS CONCERNING SCARCE WATER RESOURCES1

ABSTRACT: Factual inputs which may be useful for completing first-order assessments to aid decision-making on the allocation of scarce water resources are compiled. Water needs of major manufacturing industry groups and of minerals industries show wide variations in several measures of water use intensity. The chemicals and allied products and primary metals industries dominate the total water intake and consumptive water use by manufacturing industries. Consumptive use per employee for the petroleum and coal products industry group is nearly 2.5 times higher than that for any other industry group. Estimates of the water requirements per unit energy output for energy-processing systems vary by as much as an order of magnitude. Agricultural water use is larger than that of any other industry but water use for irrigation is not expected to increase significantly by the year 2020. In California, the production of crop calories and proteins per unit of irrigation water applied may vary by more than an order of magnitude. Crops which offer larger monetary returns per acre are irrigated most frequently.     

CONFLICTS IN WATER TRANSFER FROM IRRIGATION TO MUNICIPAL USE IN SEMIARID ENVIRONMENTS1

ABSTRACT: Conflicts caused through development of urban areas in proximity to irrigated agriculture in water-scarce regions can be minimized through the direct urbanization of irrigated lands. This shifts the water supply from one use to another on the same site rather than creating an additional use in an adjoining area. This condition has prevailed in the Phoenix region. In the Tucson region, the municipality is buying and retiring farmland in an adjacent agricultural area, for the purpose of acquiring the water right in order to transfer water to municipal use. This land purchase is necessitated by existing Arizona water law, which ties the water to the land. This method of transfer creates problems concerning how much water can be transferred per acre retired; what to do with the abandoned farmland; inequities to agribusiness and taxing entities; and loss of food crop production which have not been resolved. An alternative to the retirement of farms, applicable in the Tucson region, is to exchange treated municipal wastewater for irrigation water. While this method appears to be the least disruptive, it requires the resolution of certain institutional problems concerned with land and water management method.     

正确认识燃烧现象

本文主要剖析了燃烧的过程及类型 ,帮助人们了解和掌握更多的燃烧知识 ,纠正长期存在的一些错误观念。     

燃煤电厂烟气脱硫主要工艺

简要介绍燃煤电厂烟气脱硫（FGD）的湿法，半干法，干法，可回收工艺和联合SO2／NOx工艺等五类主要工艺，并对我国烟气脱硫技术的进展进行了探讨，指出我国烟气脱硫技术的发展应走国产化的道路。     

关于《农用污泥中污染物控制标准》中锌限量值的讨论

按照现行的《污泥农用中污染物控制标准》(GB4284-84)，锌超标问题是限制我国城市污泥农用的首要因素。本文从环境保护、土壤、植物营养、农业生产、人体营养及锌污染风险等角度综合分析了该标准中锌限量值的不合理性。我国的土壤普遍缺锌，是世界锌肥施用量最大的国家，人们在食品中也添加锌或用药物补锌；但我国现行的污泥农用标准中污染物控制对锌的控制过于严格，已成为城市污泥处理处置和资源化利用的羁绊，因此该标准中关于锌的限量值应该重新修订。修订标准时，不仅要考虑土地利用类型，还需要考虑锌的土壤环境容量。     

基于遗传算法与人工神经网络相结合的玉米估产研究

在遗传算法 (GeneticAlgorithm )与误差反传 (BackPropagation)网络结构模型相结合的基础上 ,设计了用遗传算法训练神经网络权重的新方法 ,并对吉林省梨树县的玉米进行了估产研究 ,同时与BP算法和灰色系统理论模型进行了比较。经检验 ,计算值与实际值接近 ,并优于灰色理论模型 ,具有良好的预测效果 ,从而为农作物估产提供了新方法     

秸秆资源的开发利用潜力及途径

本文从分析我国秸秆资源的利用现状入手,从＂印度模式＂得到启示,研究了秸秆资源的开发利用潜力及有效利用途径,以达到实现＂节粮型＂畜牧业合理结构的目的。     

Crop damage by urban environment in Malaysia

Environmental pollutants are causing worldwide damage to plants, forests and crop production, among which, gaseous and particulate metal pollutants from heavy industries in many developed countries are of major concern. Many of these pollutants kill plants, cause stunted growth and premature aging, inhibit flowering and fruiting, cause a reduction in dry matter, and thereby results in a great reduction in crop production in many countries. This paper describes how an urban environment in Malaysia which is an agricultural based country affects plant growth and crop production.