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首页> 外文期刊>Journal of Hazardous Materials >Cavitationally induced biodegradability enhancement of a distillery wastewater
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Cavitationally induced biodegradability enhancement of a distillery wastewater

机译：空化诱导提高酒厂废水的生物降解性

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摘要

Hydrodynamic cavitation (HC) was evaluated as a pretreatment option for the complex/recalcitrant biomethanated distillery wastewater (B-DWW). The effect of various process parameters such as inlet pressure, dilution and reaction time on reduction of COD/TOC and enhancement of biodegradability index (BI:BOD_5:COD ratio) of the B-DWW was studied with an aim to maximize the biodegradability index and reducing the toxicity of the distillery wastewater. It was observed that higher operating pressure (13 bar) yielded the maximum Bl whereas the lower pressure (5 bar) is suitable for the reduction in the toxicity of B-DWW. The toxicity of the distillery wastewater was analyzed by measuring the COD, TOC and color of the wastewater sample. The HC pretreatment under optimized conditions leads to a Bl of 0.32, COD and TOC reduction of 32.24% and 31.43%, respectively along with a color reduction by 48%. These results indicate the potential of HC as a pretreatment option for enhancing the biodegradability index of the recalcitrant wastewater such as B-DWW along with reduced toxicity of wastewater as observed from COD, TOC and color reduction profile under optimized conditions.
机译：对复杂/难降解的生物甲烷化酒厂废水（B-DWW）进行了评估，将水动力空化（HC）作为预处理选项进行了评估。研究了各种工艺参数（例如入口压力，稀释度和反应时间）对降低B-DWW的COD / TOC和提高生物降解指数（BI：BOD_5：COD比）的影响，旨在最大程度地提高生物降解指数和降低蒸馏厂废水的毒性。观察到较高的工作压力（13 bar）产生最大的B1，而较低的压力（5 bar）适合降低B-DWW的毒性。通过测量废水样品的COD，TOC和颜色分析了酿酒厂废水的毒性。在优化的条件下进行HC预处理可以使Bl为0.32，COD和TOC分别减少32.24％和31.43％，并且颜色减少48％。这些结果表明，在优化条件下，从COD，TOC和减色特性观察到，HC作为提高B-DWW等难处理废水的生物降解指数的预处理方法的潜力以及降低的废水毒性。

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