絮凝剂对钻井污水ξ电势的影响

钻井污水是一种棕黑色的多组分复杂体系，含有大量粘土粒子、电解质、少量浮油和油田处理剂，基本上属于胶体体系。ξ电势是胶体的一个重要性质，试验中研究测试了几种常用无机絮凝剂处理钻井污水时ξ电势的变化，根据ξ电势的大小及等电点时絮凝剂的用量对其进行了筛选。     

最佳钻井防污土建结构的设计及应用

设计了一种高效实用的钻井防污土建结构，该结构与原结构相比能杜绝处理渣泥流入废水沉砂池参与废水循环，也可防止废弃钻井液和掏罐泥浆水直接进入沉砂池，因此能更好地控制钻井废水浓度，一定程度上提高钻井废水处理达标率，同时该结构具有对处理水进一步隔油、净化等优点，现场推广应用后得到证实。     

布袋式除尘器在电厂输煤系统上的应用

针对胜利电厂皮带输煤系统粉尘浓度高、污染环境、影响职工身体健康的问题，用布袋式除尘器替代原有的静电除尘器，并对布袋除尘器辅助系统进行了多处改进和完善，提高了运行的可靠性。投运后粉尘质量浓度由原来的18．3mg／m^3降低至1．68mg／m^3，除尘效率达到了98％以上。     

海南东寨港红树林湿地面积变化及其驱动力分析

本文分析了海南省东寨港红树林湿地的面积变化及其驱动力。结合早期地形图和实地调查数据，利用3个时相的TM遥感图片，计算出1959年、1989年、1996年、2002年4个时相的红树林面积分别为3213．8hm^2、1657．8hm^2、2018．8hm^2和1552．6hm^2。在过去的近50年里，有近50％的天然红树林被毁掉，红树林湿地被转换为经济林种植田、水产养殖塘、城镇基础设施建设用地等。自1980年成立红树林自然保护区以来，红树林得到了一定程度的保护，1989年到1996年图像对比上红树林面积增加了361．0hm^2。近年来，旅游业的开发对红树林生态系统存在一定程度的干扰。2002年，红树林面积相对于1996年减少了566．2hm^2。此外，红树林斑块的空间格局和树种的构成发生了变化，红树林群落植物多样性明显减弱。在综合分析基础上，根据生态系统综合管理的思想。提出了建立高水平的管理研究队伍，采用先进的管理技术和手段，综合管理红树林生态系统。     

静电基本参数的测试原理

静电测试是整个静电防护工程中不可或缺的组成部分,也是静电防护设计和管理的依据.本文主要介绍了静电基本参数中的静电电位、静电电容和静电电量的测试原理,并结合具体测试数据对测试的方法和仪器进行了分析.     

炭法烟气脱硫技术研究进展

炭法烟气脱硫技术经半个多世纪的发展，在脱硫剂、脱硫工艺、脱硫原理及联合脱除氮氧化物和有毒物质等方面取得了许多进展。在概述炭法烟气脱硫技术研究进展的同时，分析了制约炭法烟气脱硫技术发展的原因并对炭法烟气脱硫技术的发展方向提出了几点建议。     

Research on ecosystem services of water conservation and soil retention: a bibliometric analysis

Environmental Science and Pollution Research - Water conservation and soil retention are two essential regulating services that are closely related, and their relationship might produce synergies...     

Research status,challenges and future prospects of renewable synthetic fuel catalysts for CO2 photocatalytic reduction conversion

Environmental Science and Pollution Research - In recent years, with global climate change, the utilization of carbon dioxide as a resource has become an important goal of human society to achieve...     

Pyrolysis technologies for municipal solid waste: A review

Pyrolysis has been examined as an attractive alternative to incineration for municipal solid waste (MSW) disposal that allows energy and resource recovery; however, it has seldom been applied independently with the output of pyrolysis products as end products. This review addresses the state-of-the-art of MSW pyrolysis in regards to its technologies and reactors, products and environmental impacts. In this review, first, the influence of important operating parameters such as final temperature, heating rate (HR) and residence time in the reaction zone on the pyrolysis behaviours and products is reviewed; then the pyrolysis technologies and reactors adopted in literatures and scale-up plants are evaluated. Third, the yields and main properties of the pyrolytic products from individual MSW components, refuse-derived fuel (RDF) made from MSW, and MSW are summarised. In the fourth section, in addition to emissions from pyrolysis processes, such as HCl, SO₂ and NH₃, contaminants in the products, including PCDD/F and heavy metals, are also reviewed, and available measures for improving the environmental impacts of pyrolysis are surveyed. It can be concluded that the single pyrolysis process is an effective waste-to-energy convertor but is not a guaranteed clean solution for MSW disposal. Based on this information, the prospects of applying pyrolysis technologies to dealing with MSW are evaluated and suggested.     

Spatial correlation and influencing factors of industrial agglomeration and pollution discharges: a case study of 284 cities in China

Environmental Science and Pollution Research - Exploring the spatial correlation characteristics and influencing factors of industrial agglomeration and pollution discharge, which is of great...