科研之友
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摘要
Both hazardous chromium sludge and high salinity effluent, further biological treatment of which is technologically very difficult, are final problems in chromium wastewater treatment by the standard (precipitation) method. In this paper, the scheme of nanofiltration in a constant volume diafiltration (NF-CVD) circulation loop system that solves these problems is presented. Treatment of the model chromium tannery bath in the NF-CVD system allows obtaining the bath with 2.5 times higher chromium concentration and 3.5 times lower salt concentration than in the feed solution and the brain bath at the same time. Such baths can be actually reused in tanneries.
- 出版日期2017-2
