The current work is a "first of a kind" report on the feasibility and efficacy of hydrodynamic cavitation integrated Advanced Oxidation Processes (AOP's) towards treatment of a real life greywater stream in form of kitchen wastewater. The work has been carried out in a sequential manner starting with geometry optimization of orifice plate (cavitating device) followed by studying the effects of inlet pressure, pH, effluent dilution ratio on degradation of TOC and COD. Under optimized conditions of pH 3, 4 bar pressure, TOC and COD reduction of 18.23 and 25% were obtained using HC for a period of 120 min. To improve the performance of HC, further studies were carried out by integrating H2O2and O3with HC. Using 5 g/h optimum dosage of H2O2, 87.5% reduction in COD was obtained beyond which it started decreasing. Moreover, integrating O3(57.5% reduction in COD) increased the treatment cost. However, a hybrid process (HC + H2O2 + O3) yielded 76.26 and 98.25% reductions in TOC and COD within60 min.The energetics of all the processes and the treatment costs were studied in detail and it was concluded that combined process of HC + H2O2 + O3surpassed by far the performances of HC + H2O2and HC + O3.

中文翻译：

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水动力空化的性能和能量分析，以及与现有高级氧化工艺的潜在集成：以现实生活中的灰水处理为例。

当前的工作是关于流体动力空化综合高级氧化工艺（AOP）处理厨房废水形式的现实生活中的灰水流的可行性和有效性的“同类”报告。该工作已按顺序进行，首先对孔板（空化装置）进行了几何优化，然后研究了入口压力，pH，流出物稀释比对TOC和COD降解的影响。在最适pH值为3、4 bar的条件下，使用HC持续120分钟，TOC和COD降低了18.23和25％。为了提高HC的性能，将H2O2和O3与HC进行了进一步的研究。使用5 g / h的最佳H2O2剂量，COD减少了87.5％，超过此水平便开始下降。此外，整合O3（COD减少57.5％）增加了处理成本。然而，混合工艺（HC + H2O2 + O3）在60分钟内产生的TOC和COD降低了76.26，减少了98.25％。 + O3远远超过了HC + H2O2和HC + O3的性能。