中国耕地资源利用效益研究

本文认为耕地数量平衡质量下降的错位是当前我国耕地资源利用中存在的一个不可忽视的问题，文章选取了耕地产出效益系数，耕地消耗回报系数、耕地当局染替代系数、耕地利用集约化系数等指标，对我国现有耕地利用效益进行了定量分析，在此基础上，从观念更新，技术进步，财政投资、产权制度优化等角度，提出提高我国耕地资源利用效益的对策，以级解我国人地矛盾的压力。     

复合多管除尘器在湿法水泥回转窑除尘中的应用

把具有惯性沉降除尘、旋风子除尘两级一体功能的复合多管除尘器用于带湿式蒸发器的湿法水泥回转窑尾气除尘，替换原“旋风除尘器＋电除尘器”除尘系统中的多筒旋风器。运行测试表明，它的除尘效率达到９４６％，确保了窑尾排放烟尘浓度达到国家标准。     

工伤事故影响行业生产发展的调查研究

通过对各行业工伤事故伤亡人数和损失后果的广泛调查，及其对不同行业和各类企业影响范围和程度的比较分析，全面识别工伤事故给企业经济效益导致的损失，并科学地评价了对行业生产发展的影响。     

THE CHARACTERISTICS OF TYPHOON DISASTER AND MITIGATION COUNTERMEASURES IN GUANGDONG

Typhoongenerallyalsocalledtropicalcycloneisformedovertropicaloceans,revolvingintensivelyrounditscentralaxesandmovingforwards.Theinternationalclassifiedstandardandnamesareasfollows:TD—TropicalDepression.ThewindforceatthecenterofTDisaboutscale 6～ 7;TS—TropicalStorm.ThewindforceatthecenterofTSisaboutscale 8～ 9;STS—SevereTropicalStorm.ThewindforceatthecenterofSTSisaboutscale 1 0～ 1 1;TY—TyphoonalsocalledHurricane.ThewindforceatthecenterofTYislargerthanscale1 2.Inthispaper,howeve…     

旅游景区清洁生产与可持续发展研究——以扬州凤凰岛景区为例

本文就清洁生产及清洁生产在旅游景区的应用进行了阐述 ,着重分析了旅游景区清洁生产的主要内容 ,并以扬州凤凰岛景区为例 ,就该景区实施旅游清洁生产提出了具体方法和建议。     

铝盐混凝剂的制备及其在水处理中的应用研究

以印染废水处理污泥为主要原料,制备无机铝盐混凝剂,并对其混凝性能进行了研究。试验结果表明:该混凝剂具有良好的去除COD、浊度和色度的性能。用该混凝剂对改良AAO工艺出水处理后,COD、浊度和色度均达到《城市污水再生利用——工业用水水质》(GB/T19923-2005)要求。     

溶液吸收/分光光度法检测空气中偏二甲肼含量

GJB2373-95采用固体吸附/分光光度法监测空气中偏二甲肼,但是采集空气中偏二甲肼所用的SG-2固体吸附剂和采样管制作繁琐,分析步骤复杂,不适合连续监测。文章以单位自行研制的偏二甲肼动态配气系统配制已知浓度空气样品为测试环境,用标定过的美国Interscan气体检测仪实时监测其浓度为13.4×10-6～13.6×10-6,采用溶液吸收法采样并简化GJB2373-95标准方法的分析步骤。依据两种方法分别做出各自的标准曲线,并采用固体吸附法和溶液吸收法各采集两个平行样,样品采样体积分别为3.28L、3.31L和3.12L、3.14L,对应各自的标准曲线,计算出两组样品偏二甲肼含量分别为10.7×10-6、11.0×10-6和12.1×10-6、12.0×10-6。经传感器实时监测值作为第三方数据比对,结果表明溶液吸收/分光光度法监测结果准确,分析步骤简单、省时。     

Modeling the effects of constructed wetland on nonpoint source pollution control and reservoir water quality improvement

This article describes the integrated modeling approach for planning the size and the operation of constructed wetlands for maximizing retention of nonpoint source pollutant loads and reservoir water-quality improvement at a catchment scale.The experimental field-scale wetland systems (four sets,0.88 ha each) have been in operation since 2002,where water depth was maintained at 30–50 cm and hydraulic loading rate was at 6.3–18.8 cm/day.The wetland system was found to be adequate for treating polluted stream water with stable removal efficiency even during the winter.The integrated modeling system (modified-BASINS) was applied to the Seokmoon estuarine reservoir watershed and calibrated with monitoring data from constructed wetland,stream,and reservoir.The calibrated integrated modeling system estimated that constructing wetlands on 0.5% (about 114 ha) of the watershed area at the mouth of reservoir could reduce 11.61% and 13.49% of total external nitrogen and phosphorus loads,respectively.It also might improve the nitrogen and phosphorus concentration of the reservoir by 9.69% and 16.48%,respectively.The study suggested that about 0.1%–1.0% of the watershed area should be allocated for constructed wetland to meet specified water-quality standards for the estuarine reservoir at the polder area where land use planning is relatively less complicated.     

UASB-好氧工艺处理碳酸饮料废水

从废水特点、工艺流程、主要构筑物等方面介绍UASB-好氧工艺处理碳酸饮料废水,并与传统好氧处理工艺进行经济及技术分析比较,表明该工艺处理水质良好,成本降低。