精制棉蒸煮清洗废水处理工程实践

精制棉蒸煮清洗废水（黑液）色度高,成分复杂,属于难处理高浓度有机废水。采用“物化-生化”工艺对其进行处理,BOD、COD、色度、SS去除率分别为95．42％、96．58％、98．25％、70．00％,工程运行稳定,处理费用约为1．93元/m^3。     

对城市中心区小型建设项目的环保管理

结合天津市和平区的地域特点,分析了环境污染的形式和特点,探讨了如何加强城区小型建设项目和强化工商执照前环保审批程序,控制和减轻对环境的污染,并介绍了和平区对加强城区小型建设项目和强化工商执照环境保护管理审批的办法和措施。     

Desalinated versus recycled water: public perceptions and profiles of the accepters

Many countries' water resources are limited in both quantity and quality. While engineering solutions can now safely produce recycled and desalinated water from non-potable sources at a relatively low cost, the general public is sceptical about adopting these alternative water sources. Social scientists, policy makers and technical experts need to better understand what is causing this lack of acceptance by the general population and how acceptance levels for recycled and desalinated water can be increased. This study is the first to conduct a comparative analysis of knowledge, perceptions, and acceptability, and determine segments of residents who are more open-minded than the general population toward the use of recycled and desalinated water. The Australian population once perceived desalinated water as environmentally unfriendly, and recycled water as a public health hazard. The general level of knowledge about these two concepts as potential water sources has historically been low. After nearly five years of serious drought, accompanied by severe water restrictions across most of the country, and subsequent media attention on solutions to water scarcity, Australians now show more acceptance of desalinated water for close-to-body uses, and less resistance to recycled water for garden watering and cleaning uses. The types of people likely to be strong accepters of the two alternative water sources are distinctly different groups, and can be reached through different media mixes. This finding has significant implications for policy makers and water practitioners.     

海洋油气开发工程环评中公众参与探讨

根据我国环境影响评价公众参与现状和海洋油气开发工程公众参与实践,对海洋油气开发工程环评中公众参与进行初步探讨。目前海洋油气开发工程公众参与存在的问题主要有:相关公众界定较难、公众主要是在环评机构主导下的被动参与、信息不对称使公众难以正确表达意见、相关公众中个人的环境素养和法制意识不高。根据存在的问题,建议通过以下方法提高海洋油气开发工程环评公众参与水平:研究制定海洋工程公众参与技术方法规范;掌握好公众参与时机,尽早启动,调动公众主动参与;科学确定公众范围,选择好公众参与对象;结合实际选择公众参与方式。     

高校人工湿地系统的规划设计——以福建工程学院新校区为例

人工湿地处理技术具有投资低、出水水质好、耗能低、抗冲击力强、操作简单和运行费用低等优点。本文阐述了人工湿地系统应用于高校生活污水回收利用的意义,以福建工程学院新校区的北校区为例,利用前期在福州大学模拟人工湿地系统处理生活污水的实验数据,规划设计人工湿地系统,计算确定相关设施的面积和尺寸,并对人工湿地系统进行平面布置,绘制出系统流程的剖面图。     

改进LEC法在水利水电工程建设期危险源评价中的应用

在水利水电工程建设期的安全管理中,危险源的管理处于十分重要的地位。水利水电工程施工企业通常采用作业条件危险性评价法（LEC法）进行风险评价。LEC法十分依赖评估小组的实际经验。针对LEC法的局限性,提出用于水利水电工程建设期危险源评价的改进LEC方法,以提高企业的危险源管理水平。     

建设工程重大危险源界定和辨识标准研究

以重大危险源为研究对象,对当前重大危险源辨识标准进行研讨,指出建设工程重大危险源管理中存在的问题;从风险角度,结合建设工程实际,提出建设工程重大危险源的定义;从事故后果和发生概率两个角度,提出12个辨识因子,建立建设工程重大危险源辨识标准。以实例对某桥梁一处模板工程重大危险源进行辨识,验证了该标准的可行性,为建设工程安全风险管理提供一种新方法。     

建设项目安全管理的智能化技术研究

明确建设项目安全管理的意义;简述建设项目安全管理技术的国内外研究现状;指出当前的建设项目安全管理研究存在的主要不足;提出笔者研究的思路和研究的主要内容;收集详细的施工现场资料,参考相关历史文献资料,提取可能引起安全事故的原始不确定风险因素,建立安全管理风险评价指标体系;并利用人工神经网络(ANN)强大的非线性函数逼近能力,将BP神经网络引入建设项目风险控制,构建基于BP神经网络的建设项目安全控制系统,从而实现建设项目安全管理的智能化。通过工程实例验证:该方法具有可行性和有效性,为实现建设项目安全管理目标及工期、成本、质量目标打下坚实的基础。     

斜气流技术的试验研究与工程应用

针对电除尘器运行过程中出现的除尘效率下降问题,进行了斜气流技术模拟试验.试验中采用不同的调节装置,将气流调整到预定的斜气流廓线模式.分析了不同气流调节装置对流速分布的影响,将优化后的斜气流方案运用到实际工程中,取得了良好的效果.     

Evaluation of Poly(ethylene-terephthalate) Products of Chemical Recycling by Differential Scanning Calorimetry

Poly (ethylene-terephthalate), (PET) bottles waste was chemically recycled by glycolysis and hydrolysis. The depolymerization processes were carried out in different time intervals from 5 to 360 min, in two different molar ratios of PET/EG, 1:5 and 1:18 and at different temperatures. The PET glycolysis leads to formation of bis(2-hydroxy-ethyl)terephthalate (BHET) monomer and PET oligomers with hydroxyl and carboxyl end groups while PET hydrolysis is followed by formation of monomers terephthalic acid (TPA) and ethylene glycol (EG). Fractions of monomers and oligomers were further characterized by FTIR spectroscopy and by differential scanning calorimetry (DSC). The results show that DSC is successful method to describe the different structures of oligomers formed during chemical recycling of PET.