摘要
对上海500多个电镀厂(点)两次调查结果表明,1990年与1985～1986年相比,虽然电镀生产增长约2.1倍,金属总耗量仅增加5.2％,其中毒性最大的铬耗量从占金属总耗量约10.2％下降到7.6％;工艺用水采用全封闭或半封闭循环的厂(点)增至49.0％,电镀废水排放量减少22.9％;化学法处理废水的厂(点)从55.2％增至66.1％,离子交换和电解法分别从30.7％、7.8％降至22.0％、3.8％;1990年全市排放电镀污泥128吨,绝大部分以铁质为主的混合重金属污泥(约45％用于烧砖,15％回收金属和38％填埋或直接废弃)。
Survey of treatment and disposal of electroplating wastewater and heavy metal sludge for over 500 plants in Shanghai have been made during 1985 - 1986 and 1990. The result showed that in 1990, electroplating production increased 2.1- fold, and heavy metal consumption only increased 5.2%, among which chromium decreased 7.6%, and wastewater discharge decreased 22.9% in comparison with 1985-1986. Wastewater treatment by means of chemical process were 55.2% in 1985-1986 to 66.1% in 1990; ion exchange and electrolysis processes were 30.7% and 7.8% in 1985-1986 to 22.0% and 3.8% in 1990 respectively. Total amount of heavy metal sludge produced was 128t/d in 1990, among which about 45% was used for brick making, 15% recovered and 38% abandoned.
出处
《上海环境科学》
CAS
CSCD
1994年第6期27-29,35,共4页
Shanghai Environmental Sciences
基金
"七.五"国家科技攻关项目(59-01-05-01)资助
关键词
电镀废水
重金属污泥
上海市
Electroplating wastewater Heavy metal sludge Survey
