我国石油炼制企业清洁生产措施分析

石油炼制工业是我国重要的能源和化工原料生产产业。随着生产负荷的提高，加工深度增加，原料变重变差，石油炼制工业的环境保护压力越来越大。针对石油炼制工业的生产特点，分析其污染源、污染治理现状以及目前存在的一些问题，提出了我国石油炼制企业的清洁生产措施。     

O_2BG复叶式节能曝气机的性能及其应用

介绍了复叶式节能曝气机的结构,工作原理,性能参数及实际应用情况。     

沈阳市服装干洗业氯代烃使用情况及污染状况调查

探讨了服装干洗业氯代烃使用情况及污染状况，并分析了目前广泛采用的服装干洗工艺．结果表明，目前服装干洗业全部采用四氯乙烯做干洗剂，沈阳市每年的消耗量在３００ｔ左右，干洗过程中约９８％的四氯乙烯通过挥发进入大气，２％通过蒸馏残渣排放进入土壤及水体．     

污泥加药调质中的有关问题探讨

污泥的加药调质条件对脱水性能的影响很大，在加药调质中，根据污泥性质，正确选择凝聚剂和絮凝的种类、规格和投加量是很关键的。在具体的调质工艺过程中，还有一些值得注意的环节。污泥脱水效果不佳，并不一定是脱水机的性能、污泥性或调质药剂等原因所至，有可能是在具体的调质工艺操作中的一些易忽视的环节出了问题，而这些对污泥调质效果往往是至关重要的。     

Comparative assessment of wet and dry garment cleaning Part 1. Environmental and human health assessment

Water-based cleaning of specialty garments is emerging as a potential alternative to dry cleaning. Perchloroethylene, the solvent used in dry cleaning, poses significant human and ecosystem health concerns. This paper is part 1 of a two part series that analyzes the key environmental, human health, performance, economic, and regulatory factors which influence the future of the garment cleaning industry. This paper inventories the environmental releases and wastes associated with the consumption of perchloroethylene in modern dry cleaning machines which ranges from 2.0 to 5.2 kg per 100 kg of clothing cleaned. In addition, water, electricity, and other inputs for both perchloroethylene-based and water-based garment cleaning are compared using data from previous demonstration projects. Toxicological and epidemiological studies provide evidence for the carcinogenicity of perchloroethylene although this classification is controversial. Cancer risks at low levels of exposure associated with modern dry cleaning equipment and good housekeeping practices are unknown and require further investigation. Regardless of these uncertainties, water-based cleaning is preferable to dry cleaning from a human and environmental health perspective.     

Prenatal tests for Sanfilippo disease type B in four pregnancies

We report the prenatal diagnosis of two fetuses with Sanfilippo disease type B. In both pregnancies there were excessive amounts of heparan sulphate in amniotic fluid and the activity of N-acetyl-α-D-glucosaminidase was undetectable in cultured amniotic fluid cells. The predictions were confirmed by enzyme assay of cultured skin fibroblasts from the aborted fetus or the affected infant. The disorder was excluded for two other pregnancies at risk and the predictions are considered to be correct because of the normal progress of the healthy children.     

小城镇环境污染与防治

发展小城镇是我国城市化过程的必由之路,但小城镇在快速发展的过程中产生了很多环境问题,本文分析了产生这些问题的原因,并提出了环境保护的对策及措施。     

煤矿井下主要噪声源及其控制

本文对煤矿井下采煤和掘进工作面主要噪声源及其控制技术进行了系统的分析,并结合实例说明了其效果和煤矿噪声控制的发展趋势。     

触摸屏技术在液压压砖机PLC控制系统中的应用

介绍了触摸屏监视器的特点、功能以及在200t全自动液压压砖机PLC控制系统中的应用。     

锅炉鼓引风量的合理配比与提高锅炉热效率和环保效果的研究

通过对锅炉鼓引风量配比进行适量调整和对原除尘器S挡板的改进，达到了提高锅炉热效率和环保效果的目的，同时提出了一些相关建议。