1课题确定的背景在我国,随着国民经济的不断发展,人们的生活水平也越来越高,于是越来越多的电子产品进入到寻常的百姓家庭。电池已经成为人们日常生活中必不可少的消费品之一,而且电池的消耗量迅速增多。仅去年我国电池的产量和消费量就高达140亿节,占世界总量的1/3左右。废旧电池中含有汞、铅、锰等多种重金属,若不经过回收和妥善处理,而将其随意丢弃与自然环境 1 background to determine the subject In our country, with the continuous development of the national economy, people’s living standards are getting higher and higher, so more and more electronic products into ordinary people’s homes. Batteries have become one of the essential consumer products in everyday life, and battery consumption is rapidly increasing. Last year, China’s battery production and consumption of up to 14 billion knot, accounting for about 1/3 of the world total. Waste batteries contain mercury, lead, manganese and other heavy metals, if not without proper recovery and disposal, and its arbitrary discarded with the natural environment