摘要
黄姜皂素酸性废水的Cl^-、COD高、酸性强，治理难度大，采用纳滤NF（nanofiltration）、反渗透RO（reverse osmosis）滤组合处理黄姜皂素酸性废水的试验表明：黄姜皂素酸性废水通过石灰中和、MF保安过滤预处理，再进行NF、RO组合处理，其COD可从25000-50000mg／L降至200mg／L以下，达到国家废水综合排放二级标准，并从废水中回收部分淀粉糖用作工业碳源。同时分析了NF、RO试验过程中膜通量变化的影响因素，为NF、RO组合处理皂素废水的膜运行参数确定提供了依据。
Acid wastewater from diosgenin industry is hard to be treated for its high content of Cl^- and COD. The combination of NF（nanofiltration） and RO（reverse osmosis） method was used to deal with acid wastewater from diosgenin industry in this paper. The results indicated that through neutralization by calcareousness, pretreatment by MF filtration and then disposal by combination of NF and RO, COD of acid wastewater can be decreased from 25000-50 000 mg/L to less than 200 mg/L, which reaches the second grade of national integrate wastewater discharge standard. Also starch sugar in the wastewater can be partially recycled as industrial carbon source. Meanwhile, the analysis of the factors for changes of membrane flux during NF and RO experiments provides basis to establish parameters of running membrane in disposing wastewater from diosgenin industry by combination of NF and RO.
出处
《地质科技情报》
CAS
CSCD
北大核心
2007年第1期91-95,共5页
Geological Science and Technology Information
基金
国家"863"计划课题(2004ASA601050)
关键词
皂素酸性废水
膜分离
膜通量
NF
RO
acidic wastewater from diosgenin production
separation by membrane
flux
NF
RO
作者简介
杨志华（1978-），男，现正攻读环境工程专业博士学位，主要从事水污染控制方面的研究．
