湿空气氧化法提高酿酒废水的可生化性。
Wet air oxidation induced enhanced biodegradability of distillery effluent.
机构信息
CSIR - National Environmental Engineering Research Institute, Nehru Marg, Nagpur, Maharashtra, India.
CSIR - National Environmental Engineering Research Institute, Nehru Marg, Nagpur, Maharashtra, India; CSIR - Central Food Technological Research Institute, Mysore, Karnataka, India.
出版信息
J Environ Manage. 2014 Apr 1;136:132-8. doi: 10.1016/j.jenvman.2014.01.026. Epub 2014 Mar 6.
The present study reports the feasibility of Wet Air Oxidation (WAO) as a pretreatment option for enhanced biodegradation of complex distillery effluent. Initially, the distillery effluent was pretreated by WAO at different process conditions (pressure, temperature and time) to facilitate enhancement in the biodegradability index (BI = BOD5: COD ratio). The biodegradability of WAO pretreated effluent was evaluated by subjecting it to aerobic biodegradation and anaerobic followed by aerobic biodegradation. Aerobic biodegradation of pretreated effluent with enhanced biodegradability index (BI = 0.4-0.8) showed enhanced COD reduction of up to 67.7%, whereas the untreated effluent (BI = 0.17) indicated poor COD reduction of only 22.5%. Anaerobic followed by aerobic biodegradation of pretreated effluent has shown up to 87.9% COD reduction, while the untreated effluent has shown only 43.1% COD reduction. Bio-kinetic parameters also confirmed the increased rate of bio-oxidation at enhanced BIs. The results indicate that the WAO pretreatment facilitates enhanced bio-oxidation/bio-degradation of complex effluents like the distillery spent wash.
本研究报告了湿式氧化 (WAO) 作为预处理选项用于增强复杂酿酒厂废水可生物降解性的可行性。首先，WAO 在不同的工艺条件（压力、温度和时间）下对酿酒厂废水进行预处理，以提高生物降解性指数 (BI = BOD5: COD 比值)。通过对可生物降解性增强的预处理废水进行好氧生物降解和厌氧-好氧生物降解来评估其可生物降解性。具有增强生物降解性指数 (BI = 0.4-0.8) 的预处理废水的好氧生物降解表明 COD 去除率高达 67.7%，而未经处理的废水 (BI = 0.17) 的 COD 去除率仅为 22.5%。预处理废水的厌氧-好氧生物降解表明 COD 去除率高达 87.9%，而未经处理的废水的 COD 去除率仅为 43.1%。生物动力学参数也证实了在增强 BI 时生物氧化速率的增加。结果表明，WAO 预处理有利于增强复杂废水（如酿酒厂废水）的生物氧化/生物降解。
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