高悬浮物选矿废水处理技术研究与工程实践.pdf

第14卷第2期
矿冶
o.14,No.2
2005年6月
MINING METALLURGY
June 2005
文章编号:1005-7854(20051)02-0028-05
高悬浮物选矿废水处理技术硏究与工程实践
许国强
(湖南有色金属硏究院,长沙410015)
摘要:介绍了一种超稳定、微细粒高悬浮物选矿废水处理的试验研究和工程实例。针对废水水质的
特点,提出了先使胶体脱稳后絜凝沉降的工艺流程及相关技术参数。本文论述了该废水处理的基本原
理;通过试验筛选出了胶体脱稳剂和絜凝剂,确定了最佳药剂制度和工艺流程;并简娶介绍了结合现场
情况所实施的工程设计。该项目自2004年8月底运行以来,系统一直运转正常,出水水质稳定,各项指
标远低于污水综合排放一级标准。工程实践表明,该技术具有工艺简单、投资省、效果好等优点,并对类
似的矿山废水处具有推广价值。
关键词:选矿废水;胶体脱稳;絮凝沉降;废水处理
中日分类号:X753.03文献标识码:A
STUDY ON TREATMENT OF SUSPENSION WASTEWATER FROM
MINERAL PROCESSING AND ITS PRACTICE
XU Guo-giang
Hunan Research Institute of Nonferrous Metals, Changsha 410015, Hunan, China
ARSTRACT; The treatment of high concentration suspension wastewater discharged from mineral processing
and its practice were discussed in this paper. Based on the characteristics hold by the wastewater, a technology
that treating the water with flocculation process after free of the collod stablity was suggested along with the re-
lating technical parameters. The stability eliminating agent and flocculant were screened out through tests, deter
mining the optimum reagent scheme and technique flowsheet, The paper also discussed briefly the engineering
design relating the site conditions. The treatment has been running smoothly since the end of August of the year
of 2004 when it came into use, with the performances index far below the first standard of sewage drainage. The
engineering practice showed that the technology featured the advantages in terms of it simple in flowsheet, low in
investment and good in effect. The technology could be valuable in popularizing to the Mine of the like where the
wastewater needed to be treated
KEY WORDS Wastewater from mineral processing; Elimination of colloid stability; Flocculating sedimenta
tion: Wastewater treatment
引言
酸盐含量,该公司在全浮选选矿流程中加入大量模
数为2.8~3.0的硅酸钠。选矿厂每天外排废水约
某矿业有限责任公司是一家大型黄金采选治联1500m3,废水中含有大量的选矿药剂和尾砂,悬浮
合企业。黄金赋存的矿体属泥质页若,矿带破碎比物浓度平均约4000gL。选矿废水通过两级泵
较严重,含泥高。为了保证精矿品位、降低精矿中硅
房输送到高位尾砂库自然沉降,尾砂库溢流水直接
收稿日期:2005-03-15
排人地表水系,通过实测,外排溢流水外观呈乳白
作者简介:许国强,南有色金属研究院剧院长、高级工程师、色,悬浮物在2500~3200mgL之间,大大超过
工程士,主要从事环境工程治理研究和环境评价工作
GB8978-1996》)污水综合排放标准一级标准,直接