Department of Bioengineering, Hebei University of Technology, Tianjin 300130, People's Republic of China.
J Hazard Mater. 2010 Oct 15;182(1-3):928-32. doi: 10.1016/j.jhazmat.2010.06.024. Epub 2010 Jun 12.
The feasibility of foam separation for color removal from direct dyes-containing wastewater was assessed using actual textile wastewater as the research system and cetyl trimethyl ammonium bromide (CTAB) as the collector. The influences of liquid loading volume, air flow rate, surfactant concentration, and initial pH on the removal efficiency and reuse of CTAB in the foamate were studied. The results indicated that using CTAB as a collector for foam separation can provide good foaming quality and effectively remove color from textile wastewater. Under optimum operational conditions (liquid loading volume 450 mL, gas flow rate of 500 mL/min, CTAB concentration 20 mg/L, and an initial pH of 7.0), the removal efficiency reached 88.9%. The residual dye content met the discharge standard for the dyeing and finishing textile industry (GB4287-92) published by the Ministry of Environmental Protection of the People's Republic of China. Using recycled foamate in untreated wastewater, the removal efficiency of 87.5% was obtained with CTAB concentration 10 mg/L of the wastewater.
采用实际的纺织废水作为研究体系，十六烷基三甲基溴化铵（CTAB）作为捕收剂，评估了泡沫分离法从含直接染料废水中去除颜色的可行性。研究了液体负荷量、气流率、表面活性剂浓度和初始 pH 值对泡沫相中 CTAB 去除效率和再利用的影响。结果表明，使用 CTAB 作为泡沫分离的捕收剂可以提供良好的起泡质量，并有效地从纺织废水中去除颜色。在最佳操作条件下（液体负荷量 450 mL，气体流量 500 mL/min，CTAB 浓度 20 mg/L，初始 pH 值 7.0），去除效率达到 88.9%。残留染料含量符合中华人民共和国环境保护部发布的《纺织染整工业水污染物排放标准》（GB4287-92）。在未处理废水中使用回收的泡沫液，在废水 CTAB 浓度为 10 mg/L 的条件下，去除效率达到 87.5%。
