Current Status of Manufacturing Hazardous Waste in Shanghai

It is difficult to manage the manufacturing hazardous waste （MHW） which is generated from a huge amount of complicated sources and causes very serious pollution. Therefore more and more attention has been paid to MHW pollution. Shanghai, as an industrial and economic center and an international metropolis in China, has a vast industrial system spanning a multitude of sectors, which generates MHW not only in a huge magnitude but also in a large variety of types from complicated sources, resulting in severe pollution. In 2003, the production of MHW in Shanghai is about 3.96 × 10^5 ton, involving 33 indices. Most of MHW in Shanghai is treated and disposed of, but a significant portion is not handled properly and effectively. This paper carries out infield investigation on the current status of MHW production and treatment in Shanghai, and puts forward scientific proposals that Shanghai should facilitate cleaner production and minimize haz- ardous waste; strictly enforce hazardous waste registration system, strengthen monitoring the certified enterprises; strengthen intent disposal center construction and realize hazardous waste reclamation; accelerate establishing the technical criteria and the management policy, promote the research and development on the treatment and disposal technology, and strengthen information management, thus realizing integrated management on MHW pollution.     

光降解塑料的研究开发现状

1前言目前世界塑料年总产量已逾一亿吨，其中约有30％属于短寿命应用范畴，因此其废弃物的治理已成为环境问题的焦点之一。欧、美、日等国家相继制定了一些限用、禁用、课税等有关法规，这对正在进行成熟期发展的塑料工业无疑是一个严峻的挑战和威胁。当前世界上废弃塑料的处理方法主要包括填埋、焚烧、回收利用等。这三种处理方法，各有利弊。因此，人们正在寻求更为有效的、便利的途径来处理残留废弃塑料，其中降解塑料的研制开发为人们打开了解决这一问题的新天地，并成为解决废弃塑料的有效途径之一。2光降间里村由开发现状世界降解塑料…     

含金废料中金的回收

介绍了从含金废旧电子元器件及废旧镀金件中回收金的一种简易、快速、可行的新方法。     

职业声望的背后

据报道,最近,中国人民大学社会学系发布了1996—1997年在北京地区进行的百种职业声望调查结果,其中“废品收购人员”排在第98位.对此,我认为很有必要为之正名.     

城市废弃物系统的公益性与市场化

介绍了城市废弃物系统的公益性及其应用注意的原则，提出了如何在市场经济体制下，使城市废弃物系统纳入市场化的建议。为贯彻市场化这一设计思想，应注意如下原则：价值规律，内部不经济性的补偿；许可证制度；资源化利用，企业化管理。     

从废载体催化剂中回收提炼高纯铂

一、引言与金银相比,人类发现和生产铂族金属的历史并不长。自1778年开始从哥伦比亚乔科砂矿中开采铂到现在只不过二百多年的历史。1823年德拜莱勒发现铂对乙醇的氧化和氢的氧化有催化作用,揭开了铂族金属的催化特性,导致了科学技术上的一次革命。铂(或铂铼等)催化重整几乎生产