摘要
丁苯橡胶废水是一种具有强冲击、多组分、高浓度特点的废水,且含有难降解和抑性物质,因此传统的活性污泥法对其没有理想的去除效果。研究提出选用铁碳微电解-生物接触氧化组合工艺来对该废水进行处理,以COD为主要指标考察该组合工艺对丁苯橡胶废水的处理效果。实验结果表明,铁碳微电解处理丁苯橡胶废水,可以提高废水的可生化性,并去除一定的色度和COD,铁碳微电解的最佳p H为3,最适温度为30℃,需要曝气,反应时间为60 min,后续采用生物接触氧化工艺进一步处理废水,其最佳水力停留时间为12h,出水COD浓度为95 mg/L,色度为2倍,实现丁苯橡胶废水的有效处理。
Styrene-butadiene rubber wastewater is a kind of wastewater with strong impact, multicomponent and high concentration, and contain refractory and anti matter,therefore the traditional activated sludge process has no ideal effect on the styrene-butadiene rubber wastewater. The combined process of micro-electrolysis and biological contact oxidation process were used for the styrene-butadiene rubber wastewater treatment in this study, taking COD as the main indicator to study the main processing unit and the treatment effect of the combination process. The results show that the biodegradability of the wastewater is improved,as the same the certain chrominance and COD can be removed by the micro-electrolysis of iron-carbon. The optimal condition of the micro-electrolysis of iron-carbon treatment reveal that p H is 3, temperature is 30 ℃, reaction time is 60 min and need aeration. Then the wastewater was treated by biological contact oxidation process, the optimal HRT of the process is 12 h in the biological contact oxidation process,in the case the COD of effluent is 95 mg/L and the chromaticity color of effluent is 2 times,therefore the effective treatment of the styrene-butadiene rubber wastewater is real-ized.
出处
《环境科学与技术》
CAS
CSCD
北大核心
2014年第S2期413-416,421,共5页
Environmental Science & Technology
关键词
丁苯橡胶废水
铁碳微电解
生物接触氧化法
COD去除
styrene-butadiene rubber wastewater
micro-electrolysis of iron-carbon
biological contact oxidation process
COD removal
