The present study focuses on treatment of tannery effluent samples using microalgae and isolated cyanobacteria. Different concentrations of both the effluent samples were treated with the algal isolates and a highest biomass of 0.295 g/l was attained in 50% of concentration on the 12th day in BHEL site. The biomass production in Walajapet site was found to be 0.387 g/l in the effluent treated with 50% of algae. The treated effluent was tested for growth and chlorophyll content was estimated, Chlorella sp. SRD3 showed higher chlorophyll content. The 50% treatment was processed at large-scale treatment in lab and biomass yield of 0.65 ± 0.04 g/l was achieved in BHEL site and 0.49 ± 0.028 g/l in Walajapet site. The treatment led to higher reduction rates in BOD and COD levels in treated effluents. The BOD in effluent from BHEL site was reduced to 83.41% and that from Walajapet site showed 87.46% reduction, whereas the COD values also showed 78% reduction. Based on the results, effluent sample serves as a medium for growth and bioremediation of tannery effluents by microalga, Chlorella sp. SRD3 revealed promising results which may prove efficient in the near future.

中文翻译：

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实验室规模的皮革工业废水的降解及其绿藻的减少。SRD3和Oscillatoria sp。SRD2：一种生物修复方法

本研究的重点是使用微藻类和分离的蓝细菌处理制革废水样品。在BHEL站点中，第12天以藻类分离物处理了不同浓度的两种污水样品，并以50％的浓度获得了最高的生物量0.295 g / l。发现在经50％藻类处理的废水中，Walajapet厂的生物量产量为0.387 g / l。用于生长和叶绿素含量进行了测试处理过的流出物进行了估计，小球藻sp。SRD3显示较高的叶绿素含量。50％的处理在实验室中进行了大规模处理，BHEL站点的生物量产量为0.65±0.04 g / l，Walajapet站点的生物量产量为0.49±0.028 g / l。该处理导致处理后废水中BOD和COD的降低率更高。BHEL站点的出水BOD降低至83.41％，Walajapet站点的出水BOD降低87.46％，而COD值也降低78％。根据结果​​，废水样品可作为微藻小球藻（Chlorella sp。）的制革厂废水生长和生物修复的介质。SRD3揭示了令人鼓舞的结果，在不久的将来可能会证明有效。