For the exploration of an effective and economical method to treat composite raw tannery effluent, the integrated approach of Ozonation and phycoremediation was followed. In a lab-scale Ozone reactor, the highest performance index was attained, when it was operated at a low O3 flowrate (2 g/h) condition. The tannery effluent partially treated by Ozonation (≈60% COD removed in 90 min) with the ozone consumption of 1.5 g of O3/g of COD, at pH 7.6, coupled with phycoremediation had improved the tannery effluent characteristics to a considerable extent. Overall, the maximum reduction in pollutant concentration attained with the combined treatment was 84% for COD, 60% for colour, 100% for odour, 90% for inorganic carbon, 82% for NH4+- N, 100% for PO4-P, 97% for chromium and 10% for TDS. In phycoremediation, microalgae Nannochloropsis oculata had shown an enhanced growth (μ = 0.255 day-1) with a maximum cell density of 5.2 × 107 cells/mL, dry biomass of 0.86 g L-1 and cell division rate of 0.369 day-1. Elemental analysis of biomass validated the chromium remediation along with other elements such as calcium, magnesium, sodium, potassium, zinc, and iron from the tannery effluent. Therefore, the phycoremediation integrated ozone process can be considered as a feasible treatment method for tannery effluent along with value-added biomass production.

中文翻译：

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臭氧处理和植物药介导的制革废水综合处理方法：一项可行性研究。

为了探索一种有效且经济的方法来处理复合制革厂废水，遵循了臭氧化和植物药理化处理的综合方法。在实验室规模的臭氧反应器中，当其在低O3流量（2 g / h）的条件下运行时，可获得最高的性能指标。通过臭氧化处理部分制革废水（在90分钟内去除了约60％的COD），在pH值为7.6的条件下臭氧消耗量为1.5 gO3 / g COD，再加上phycoremediation，在很大程度上改善了制革废水的特性。总体而言，联合处理可最大程度降低污染物浓度，化学需氧量为84％，颜色为60％，气味为100％，无机碳为90％，NH4 + -N为82％，PO4-P为100％，97铬为％，TDS为10％。在phycoremediation中，微藻Nannochloropsis oculata具有增强的生长（μ= 0.255 day-1），最大细胞密度为5.2×107细胞/ mL，干生物量为0.86 g L-1，细胞分裂率为0.369 day-1。生物质的元素分析验证了铬的修复以及其他制革厂废水中的钙，镁，钠，钾，锌和铁等元素的修复。因此，phycoremediation集成臭氧工艺可以被视为制革厂废水和增值生物质生产的可行处理方法。和制革厂废水中的铁。因此，phycoremediation集成臭氧工艺可以被视为制革厂废水和增值生物质生产的可行处理方法。和制革厂废水中的铁。因此，phycoremediation集成臭氧工艺可以被视为制革厂废水和增值生物质生产的可行处理方法。