摘要
介绍了国内外废弃塑料处理与回用动态。其中投资最少的卫生填埋法因塑料无法生物降解而逐渐被淘汰;焚烧法可以回收大量热能用于供热或发电,但管道、设备腐蚀,尾气污染问题有待解决;目前一些再生技术可以变废为宝,以废弃塑料生产化工原料、燃油、涂料、建材等,而且产生的二次污染少,因此越来越受到重视。在废弃塑料的资源化过程中,废弃塑料的回收和预处理是关键的环节。
The treatment and reuse trends of waste plastics in and out China is described in the particle. Land filling, which is the lowest investment way, is washed out gradually because plastics can not be decomposed biologically. For the setting on fire a lot of energy can be recovered and used for heat supply or generation, but the problems from emission pollution and corrosion of equipment and pipe are still waiting for solution. Now some regeneration process can be used to change the waste to moneybag. Due to the low secondary pollution, the production of chemicals, fuels, coating pigments and construction materials from waste plastics has been regarded day by day. The recovery and pretreat-ment of waste plastics is the key point of changing waste plastics to resources.
出处
《广州环境科学》
2001年第2期17-19,共3页
Guangzhou Environmental Science
关键词
废弃塑料
再生利用
回收利用
废物回收
waste plastics
regeneration and utilization
recovery and utilization
